|| List of recent F Antenna-related patents
|Splitter with adaptive power distribution|
The invention relates to a splitter of an indoor cellular network, with a plurality of antennas transmitting downlink signals and receiving uplink signals, the splitter distributing power to said plurality of antennas for a transmission of the downlink signals. The splitter adapts the signal power of the downlink signal for one antenna in accordance with the uplink signal received at said antenna..
Telefonaktiebolaget L M Ericsson (publ)
|Dynamic transmission antenna reconfiguration in wireless networks|
A wireless communication technique includes configuring a first antenna group to transmit common system information, a common reference signal, and data according to a first format and a second format to wireless devices in a cell, configuring a second antenna group to transmit data according to the second format, but no common system information or common reference signals, to wireless devices in the cell and dynamically assigning, based on a network operational status, antennas from a plurality of antennas to either the first antenna group or the second antenna group.. .
Zte Wistron Telecom Ab
|Methods and nodes in a wireless communication system|
Methods (700, 900) and nodes (110, 120) for transmission of broadcast information, over at least one antenna port, in a subframe, which transmission is received by a receiver (110) in a wireless communication system (100). The broadcast information is transmitted over a set of antenna ports comprising at least one antenna port, in at least one subframe (300) comprising a set of time-frequency resources, wherein a cell-specific reference signal, crs, is not transmitted in each subframe (300).
Huawei Technologies Co., Ltd.
|Method and device for testing performance of wireless terminal|
A method and a device for testing a performance of a wireless terminal and a computer readable storage medium are provided. The wireless terminal is placed in a first anechoic chamber and comprises m antennas, where m is a positive integer greater than 1.
General Test Systems Inc.
|Antenna system for a broadband access to airborne platforms|
A system for broadband access to airborne platforms is described. The system includes: a ground station with a number of antenna panels, each antenna panel having two polarizations; the ground station having multiple modems connected to the different antenna panels and a processor controlling the modems; and the aircraft equipment comprising of a modem attached to an antenna with two polarizations..
|Antenna distribution controller|
An antenna distribution controller including a plurality of antenna connectors, at least one device connector, an antenna switching circuit and a controller is provided. The antenna connector is configured to connect an external antenna.
Wistron Neweb Corp.
|Compact radio frequency antenna apparatuses|
Antenna assemblies are described herein. In particular, described herein are multi-focal-point antenna devices and compact radio frequency (rf) antenna devices.
According to various aspects, exemplary embodiments are disclosed of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes a feed network and a ground plane.
Laird Technologies, Inc.
|System for and rapidly determining true bearings of radio frequency identification (rfid) tags associated with items in a controlled area|
An rfid tag reading system and method accurately and rapidly determine true bearings of rfid tags associated with items in a controlled area. An rfid reader has an array of antenna elements and a plurality of rf transceivers.
Symbol Technologies, Inc.
|Z-segmented radio frequency antenna device for magnetic resonance imaging|
The present invention provides a radio frequency (rf) antenna device (140) for applying an rf field to an examination space (116) of a magnetic resonance (mr) imaging system (110), whereby the rf antenna device (140) is provided having a tubular body, the rf antenna device (140) is segmented in its longitudinal direction (154), and each segment (162, 164) is provided with at least one activation port. The result is that each mode, corresponding to an activation port, may be controlled individually.
Koninklijke Philips N.v.
Radio frequency (rf) birdcage coil with separately controlled ring members and rungs for use in a magnetic resonance (mr) imaging system
A radio frequency (rf) antenna device (40) for applying an rf field to an examination space (16) of a magnetic resonance (mr) imaging system (10), the rf antenna device (40) comprising a plurality of rungs (42, 44) arranged substantially parallel and in an azimuthally substantially equally spaced relationship along an outside of a virtual cylinder (50) with a cylinder axis (52) running parallel to main directions of extension (48); at least one transversal antenna member (54) electromagnetically coupled to at least one rung (42, 44) of the plurality of rungs (42, 44), wherein the at least one transversal antenna member (54) is arranged within a plane substantially perpendicular to the main directions of extension (48) of the plurality of rungs (42, 44); and a plurality of rf circuitries (62, 64, 66), wherein at least one rf circuitry (62, 64, 66) is provided for each rung (42, 44) of the plurality of rungs (42, 44) for mutual decoupling and for individually feeding rf power into and for the at least one transversal antenna member (54) for individually feeding rf power into.. .
Koninklijke Philips N.v.
Method and transmitting or receiving reference signal in wireless communication system
A method for transmitting a second demodulation reference signal added to support an additional antenna port (referred to as a “second antenna” hereinafter) in a downlink subframe having an extended cyclic prefix (cp), in which a resource (referred to as a “first resource pattern” hereinafter) to which a first demodulation reference signal will be mapped is configured, through a predetermined number of antenna ports (referred to as a “first antenna” hereinafter) in a wireless communication system includes: specifying positions of resources to which a channel state information reference signal (csi-rs) is mapped in subframe(s) in which the csi-rs is not transmitted and a subframe in which the csi-rs is transmitted on the basis of csi-rs configuration information; selecting a resource (referred to as a “second resource pattern” hereinafter) to which the second demodulation reference signal will be mapped from resources of the subframe(s) in which the csi-rs is not transmitted, the resources corresponding to the positions of the resources to which the csi-rs is mapped; and mapping the second demodulation reference signal to the second resource pattern.. .
Lg Electronics Inc.
Resource allocation techniques for device-to-device (d2d) communications
Resource allocation techniques for d2d communications are described. In one embodiment, for example, user equipment may comprise one or more radio frequency (rf) transceivers, one or more rf antennas, and logic, at least a portion of which is in hardware, the logic to receive a d2d control information (d2dci) message comprising d2d transmission pattern (dtp) information, identify a set of d2d transmission resources based on the dtp information, and send one or more d2d data messages using the set of d2d transmission resources.
High frequency gps gnn glonass antenna
An antenna for receiving global positioning signals may include a first antenna section and a second antenna section adjacent to the first antenna section to form a row of antenna sections. The first antenna section may be connected to a first and second terminal to connect to a connecting plate..
Uhf rfid reader with improved antenna system
The present invention relates to a rfid reader with an antenna system for emitting and receiving rfid signals. The antenna system includes at least a first inverted f antenna and a second inverted f antenna each having a feed element, a radiating element with a first end coupled to the feed element and a second end free, and a tuning element having a first end coupled to the ground plane and a second end coupled to the first end of the radiating element.
Antenna apparatus, radar apparatus and on-vehicle radar system
An antenna apparatus includes a substrate, a first antenna, and a second antenna. The substrate includes two or more pattern-forming layers which are layered via at least one insulating layer.
Multiple-antenna system for cellular communication and broadcasting
A reception method and apparatus for use in a multi-cell orthogonal frequency division multiple access (ofdma) wireless system. In a unicast receive mode during a first receive time period, a first group of orthogonal frequency division multiplexing (ofdm) symbols is received by a mobile device from multiple of a plurality of antennas at a serving base station.
Cooperative wireless networks
A cooperative multi-user multiple input, multiple output (mimo) antenna array comprises a mimo subspace processing system communicatively coupled by a fronthaul network to a set of antennas residing on multiple ones of a plurality of geographically distributed wireless terminals in a radio access network. The mimo subspace processing system can comprise a distributed computing system.
Genghiscomm Holdings, Llc
Triplexer architecture for aggregation
Rf circuitry, which includes a first hybrid rf coupler, a second hybrid rf coupler, and a third hybrid rf coupler, is disclosed. The first hybrid rf coupler is coupled to a first rf antenna.
Rf Micro Devices, Inc.
Method of selecting receive antennas for mimo systems
Aspects of the subject disclosure may include, for example, a device, process or software that determines an operation between a number of pairs of antennas of a set of antennas. A pair of antennas of the number of pairs of antennas is determined based on the operation.
At&t Intellectual Property Ii, Lp
Devices and methods for reducing interference between closely collocated antennas
Devices and methods for reducing interference between closely collocated antennas working at the same or adjacent frequencies are disclosed. According to one embodiment, the antenna array comprises a plurality of antennas for transmitting signals from and receiving signals to a plurality of transceivers respectively, and the device comprises a plurality of resonators; a first set of ports, each of which is connected to a respective one of the plurality of transceivers; and a second set of ports, each of which is connected to a respective one of the plurality of antennas; wherein each of the transceivers and the antennas is connected to a respective one of the resonators, and coupling coefficients among the resonators as well as a resonance frequency of each of the resonators are configured so that a desired isolation among the first set of ports and a desired matching at each of the first set of ports are obtained..
The Chinese University Of Hong Kong
Rf triplexer architecture
Rf circuitry, which includes a first hybrid rf coupler, a second hybrid rf coupler, a third hybrid rf coupler, and rf filter circuitry, is disclosed. The first hybrid rf coupler provides a first main port, a first pair of quadrature ports, and an isolation port.
Rf Micro Devices, Inc.
Antenna device for rfid reader/writer
An antenna device that includes a pair of antenna elements for an rfid reader/writer to communicate information with an rfid tag is provided. The antenna elements are movably connected to each other so that one of the antenna elements is configured to intensify the other of the antenna elements to radiate radio wave.
Nordic Id Oy
Dynamic radio frequency mapping
An intelligent cognitive radio system is disclosed that acquires information about its environment to make operational decisions. Dynamic radio frequency mapping provides estimates of rf power levels over an area where spectrum activity or changes in the environment may be transient.
The Arizona Board Of Regents On Behalf Of The University Of Arizona
Probe response suppression using angle-of-arrival in a high density environment
A first wireless device (e.g., an access point) receives a message from a second wireless device (e.g., a client device). The first device determines an angle-of-arrival of the message at a plurality of antennas of the first wireless device.
Cisco Technology, Inc.
Waveform-enabled jammer excision (weje)
A method for waveform-enabled jammer excision (weje) may include performing a jammer measurement during a look-through window when no signal-of-interest (soi) is present and obtaining a jammer signal. A soi-plus-jammer measurement may be performed and a soi-plus-jammer signal may be obtained when both the jammer signal and the soi are present.
Lockheed Martin Corporation
Transmitter and wireless communication method
A transmitter that has a plurality of antenna elements and executes spatially multiplexed transmission of data to a receiver via the antenna elements, where the data is weighted utilizing a transmission weight. Channel state information, which indicates propagation characteristics between the antenna elements and an antenna element of the receiver, is obtained or estimated.
Nippon Telegraph And Telephone Corporation
Method for selection of received telegram in train wireless communications system
A method for selection of a received telegram in a train wireless communications system including a plurality of wireless base stations situated along the train tracks, for respectively communicating with a higher level device through a wired circuit, and at least one terminal having at least two or more antennas installed in cars of the train moving down the track, during a predetermined transmission interval of a downstream telegram received from a higher level device, the wireless base station twice transmits telegrams that include at least identical content; the terminal, using the plurality of antennas, receives the telegrams transmitted by the wireless base station, selects the received telegram having the best reception from among those received by the plurality of antennas as the received telegram, and transmits a response telegram to the wireless base station, in response to the telegram received from the wireless base station.. .
Hitachi Kokusai Electric Inc.
Radio-frequency transceiver system
A radio-frequency transceiver system adapted to a wireless local area network includes an antenna set, including a plurality of antenna units disposed toward a plurality of directions, a radio-frequency signal processing module for processing radio-frequency signals, and a switching module electrically coupled between the antenna set and the radio-frequency signal processing module for switching between different connection states of the radio-frequency signal processing module and the antenna units of the antenna set such that the radio-frequency transceiver system switches between an omnidirectional mode and a directional mode. In the omnidirectional mode, the antenna units are electrically connected to the radio-frequency signal processing module to transmit or receive radio-frequency signals omni-directionally.
Wistron Neweb Corporation
Partitioned phased array fed reflector antenna system
Systems and methods for partitioned phased array fed (pafr) antennas with improved throughput capacity are disclosed. The phased array in a ppafr antenna is partitioned into multiple partitions of antenna elements that can be operated by corresponding beam forming networks with reduce sized, weight, and power consumption characteristics to independently and simultaneously to generate angularly offset static and dynamic spot beams patterns.
Antenna array self-calibration
A method and apparatus for calibrating an antenna array. The apparatus includes first and second couplers, a calibration transceiver, and a controller.
Samsung Electronics Co., Ltd.
An antenna device includes: a plurality of antenna elements of at least two or more; transmission lines connected to said antenna elements, respectively; a filter circuit connected between each of said transmission lines; a matching circuit connected, in said transmission lines, with an end opposite to said plurality of antenna elements; and an antenna port connected with said matching circuit. Isolation between all antenna ports is achieved about said plurality of antenna elements having a plurality of frequency bands in common with each other by choosing an electrical length of said transmission lines and a design condition of said filter circuit..
Methods and enhanced radiation characteristics from antennas and related components
Aspect of the present disclosure are directed to methods and apparatus producing enhanced radiation characteristics, e.g., wideband behavior, in or for antennas and related components by providing concentric sleeves, with air or dielectric material as a spacer, where the sleeves include one or more conductive layers, at least a portion of which includes fractal resonators closely spaced, in terms of wavelength. A further aspect of the present disclosure is directed to surfaces that include dual-use or multiple-use apertures.
Fractal Antenna Systems, Inc.
Touching an antenna of a near field communications (nfc) device to control its operation
A near field communications (nfc) device is disclosed that interacts with other nfc devices to exchange information and/or the data. An operator may touch, or be sufficiently proximate to, an antenna module of the nfc device to operate and/or control the nfc device.
Support of network based positioning by sounding reference signal
A method of network-based positioning using sounding reference signal (srs) is proposed. An enodeb configures a number of parameters of a periodic srs transmission for a user equipment (ue).
Electronic device with shared antenna structures and balun
An electronic device may be provided with shared antenna structures that can be used to form both a near-field-communications antenna such as a loop antenna and a non-near-field communications antenna such as an inverted-f antenna. The antenna structures may include conductive structures such as metal traces on printed circuits or other dielectric substrates, internal metal housing structures, or other conductive electronic device housing structures.
Antenna array and synthesizing antenna patterns
An antenna array having a plurality of antenna elements is disclosed. The antenna array comprises: a plurality of transceiver modules; an active antenna element subset of the plurality of antenna elements, wherein the active antenna element subset comprises at least one active antenna element being actively coupled to an associated transceiver module of the plurality of transceiver modules; and at least one passively combined sub-array of at least two antenna elements of the plurality of antenna elements.
Compound coupling to re-radiating antenna solution
Source radio frequency energy (rf) is coupled wirelessly, with no direct physical contact, between two compound loop (cpl) antennas across a variety of barriers such as plastic, human tissues, glass, and air. The compound coupling interface is highly efficient in transferring the rf energy from a source including one cpl antenna to a destination including a second cpl antenna.
A wireless device that suppresses deterioration of antenna characteristics and can be made thin is provided. The wireless device is provided with a substrate, a wireless module that is mounted on the substrate and has an antenna unit, and a casing that accommodates the substrate and the wireless module.
Panasonic Intellectual Property Management Co., Ltd.
Each of antenna system processors of a radar receiver generates, through correlation calculation of a reflection signal and a radar transmission signal, an array correlation signal for each delay in arrival of the reflection signal at each doppler frequency. A static target candidate extractor extracts, on the basis of outputs of the antenna system processors and a doppler frequency of a reflection signal from a static target located at a side of a moving body, array correlation signals corresponding to a candidate for the static target.
Directive array for drive-by meter reading
Antenna assemblies, which may be used in meter reading systems, are provided. One example of antenna assembly includes a first antenna vertically configured to be mounted on a top surface of a vehicle and a second antenna vertically configured to be mounted on the top surface of the vehicle.
Mueller International, Llc
Rf oven with inverted f antenna
A radiating element for applying electromagnetic energy to a cavity. The radiating element comprises a feeding section and a grounding section, wherein the feeding section and the grounding section extend substantially within a first plane.
Method and transmit power control for multiple antenna transmissions in the uplink
Techniques for transmit power control for multiple antenna transmissions in an uplink are disclosed. A wireless transmit/receive unit (wtru) generates at least one input stream for transmission and applies a gain factor to each channel.
Interdigital Patent Holdings, Inc.
Apparatus and transmitting and receiving reference signal in wireless communication system using multiple-input and multiple-output
An apparatus and method is proved that transmits and receives reference signals (rss) in a wireless communication system using multiple-input and multiple-output (mimo). A system adapted to the method is provided.
Samsung Electronics Co., Ltd.
Radio communication device and controlling directivity
A radio communication device includes: a directivity control unit that configures each of directivities of a plurality of antennas; a directivity switching unit that switches between the directivities of the antennas; a reception quality estimation unit that measures a reception quality of a received signal received by the antennas; and a block error estimation unit that estimates a block error in reception data which is obtained by decoding the received signal. In the case where a block error occurs continuously for a predetermined number of times or longer and an amount of decrease in the reception quality is lower than a predetermined value, the directivity control unit re-adjusts a directivity to decrease the block error, based on a result of the estimation of the block error and a result of the measurement of the reception quality, the re-adjusted directivity being one of the directivities of the antennas..
Methods and multi-user mimo transmissions in wireless communication systems
A wireless communication system includes a base station capable of communicating with a plurality of subscriber stations. The base station can transmit control information and data to a subscriber stations.
Samsung Electronics Co., Ltd.
Transmission method, transmitter apparatus, reception method and receiver apparatus
Transmission quality is improved in an environment in which direct waves dominate in a transmission method for transmitting a plurality of modulated signals from a plurality of antennas at the same time. All data symbols used in data transmission of a modulated signal are precoded by hopping between precoding matrices so that the precoding matrix used to precode each data symbol and the precoding matrices used to precode data symbols that are adjacent to the data symbol in the frequency domain and the time domain all differ.
Panasonic Intellectual Property Corporation Of America
System and multiple-input and multiple-output (mimo) full-duplex precoding structures
Embodiments are provided to enable effective cancellation or reduction of the self-interference (si) introduced when applying full-duplex (fd) transmission to multiple-input-multiple-output (mimo) systems. A method embodiment includes forming, using a precoding matrix generated in accordance with channel conditions, a plurality of beams for a plurality of transmit signals and a plurality of self-interference cancellation signals corresponding to the plurality of transmit signals.
Huawei Technologies Canada Co., Ltd.
Interference cancellation in a spread spectrum communication system
A method and apparatus used to transmit and receive weighted data transmissions over a plurality of antennas using a plurality of different pilot signals. Different pilot signals are produced and a different pilot signal of the plurality of pilot signals is transmitted on each of a plurality of antennas.
Interdigital Technology Corporation
Wireless communication device and directivity control method
A wireless communication device includes a directivity control unit that sets a directivity for a plurality of antennas, a directivity switching unit that switches the directivity for the plurality of antennas, and a reception quality estimation unit that measures the reception quality of a received signal received by the plurality of antennas. The directivity control unit uses the reception quality of a received signal directed to another station among the received signals to set the directivity in a direction in which an influence of interference from the other station is reduced..
Wireless electronic devices with metal perimeter portions including a plurality of antennas
Wireless electronic devices may include a ground plane and metal antenna portions separated by input connector portions improving the metal look and feel of the wireless electronic device.. .
Cooperative automatic tracking
A system and method are provided for automatic cooperative object tracking using gain comparison of antenna pairs facing different directions. In cooperative object tracking, the object is associated with a radiation source, or beacon, that emits radiation that is detected by the tracking system.
H4 Engineering, Inc.
Method and device for estimating channel in muliple-receiving antenna system
Disclosed are a method and device for estimating a channel in a multiple-receiving antenna system. The method comprises: a channel estimation is performed on a received pilot signal by using a least square channel estimation algorithm to obtain an estimation value hls; an n′-dimensional channel autocorrelation matrix formula (i) and a channel frequency domain autocorrelation matrix ri from a transmitting antenna i to any receiving antenna are acquired, and a weight matrix w which is descrambled and denoised is calculated, wherein i=1, 2, .
Hybrid-based cancellation in presence of antenna mismatch
A multi-port hybrid-based cancellation network may include a first and second hybrid coupler, and a first and second two-port network. The second hybrid coupler may be distinct from the first hybrid coupler.
University Of Southern California
Method and apparatus of transmitting training signal in wireless local area network system
A method of transmitting a training signal in a wireless local area network (wlan) system includes generating one or more first training signals for a first destination station and one or more second training signals for a second destination station by applying a mapping matrix p to a training signal generation sequence, mapping the first training signals and the second training signals to a plurality of antennas according to an antenna mapping matrix, and performing inverse fast fourier transform (ifft) on each of the first training signals and the second training signals mapped to the plurality of antennas and transmitting the training signals through the plurality of antennas.. .
Lg Electronics Inc.
Closed-loop multiple-input-multiple-output scheme for wireless communication based on hierarchical feedback
The present invention provides methods implemented in a base station having a plurality of antennas and one or more user terminals. One embodiment of the method includes receiving feedback from at least one user in response to transmitting a first frame to said at least one user.
Lucent Technologies Inc.
Signal generating method and signal generating apparatus
A transmission method for simultaneously transmitting a first modulated signal and a second modulated signal at the same frequency includes performing precoding on both signals using a fixed precoding matrix and regularly changing the phase of at least one of the signals. In this method, the power ratio between a plurality of signals transmitted from a plurality of antennas at the same frequency and at the same time differs from the power ratio between a plurality of pilot signals transmitted from the plurality of antennas at the same frequency and at the same time, whereby the accuracy of channel estimation by a reception device is improved..
Panasonic Intellectual Property Corporation Of America
Communication device and signal detection method
Provided are a communication device and a signal detection method capable of improving the detection accuracy for transmission signals transmitted from one or two or more transmission devices. The communication device includes a phased-array antenna, in which a plurality of antenna elements are arranged on a plane, for receiving a signal transmitted from one or two or more transmission devices; a signal converter that includes a plurality of beamformers, each of which synthesizes a received signal received at each antenna element, for each sub-array formed by grouping the plurality of antenna elements, and converts the signal synthesized for each sub-array into a baseband signal; and a signal processor for detecting a transmission signal transmitted from each of the one or two or more transmission devices, based on a baseband signal for each sub-array, which is received from each of the plurality of beamformers, for each resource block..
Samsung Elecronics Co., Ltd.
Supporting high dimensional mu-mimo beamforming by sounding multiple frames with different sets of antenna patterns
In some aspects, the disclosure is directed to methods and systems for performing channel estimation between a beamformer and a beamformee. A beamformer can determine that a beamformee is configured to perform channel estimation for up to a pre-configured number of transmit spatial streams from the beamformer.
Adaptive interference suppression via subband power measurements of a phased-array antenna
A phased-array antenna system includes an array of antenna feed elements that produces a radiation pattern to provide spot beams within which to receive a signal in a frequency band and carrying communication from a terminal at a known geographic location. A beamformer forms the spot beams; and a channelizer divides the frequency band into frequency subbands, and measures power levels of the signal over respective frequency subbands.
The Boeing Company
Link quality to static and non-static devices
In some aspects, the disclosure is directed to methods and systems for transmitting to static and non-static devices. An access point having a plurality of antennas can send a plurality of sounding frames from the plurality of antennas to a plurality of devices.
Scanning meta-material antenna and scanning with a meta- material antenna
Various antennas and systems of antennas can benefit from meta-material construction. For example, avionics antennas including weather antennas may benefit from being constructed of meta-materials.
Aviation Communication & Surveillance Systems Llc
X-band surface mount microstrip-fed patch antenna
An antenna array for use with an x-band weather radar system comprises a printed circuit board, a plurality of antenna elements, and a plurality of integrated circuit packages. The printed circuit board includes a first side and an opposing second side.
Garmin International, Inc.
Reference signal measurement use in wireless communication system including plural base stations with distributed antennas
An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a distributed antenna system (das).
Samsung Electronics Co., Ltd.
Method and transmitting downlink signal in wireless communication system
A method of transmitting a downlink signal at a base station in a wireless communication system includes generating a user equipment (ue)-specific reference signal sequence and mapping the generated sequence to resource elements (res) predetermined according to antenna port groups. The res for each antenna port group are divided on a frequency axis, on predetermined orthogonal frequency division multiplexing (ofdm) symbols of each slot, and the number of antenna port groups if the number of layers for transmitting the downlink signal is greater than 8 is twice the number of antenna port groups if the number of layers for transmitting the downlink data is equal to or less than 8..
Lg Electronics Inc.
Wireless communications system, wireless communications apparatus, wireless communications method and computer program for wireless communication
In performing svd-mimo transmission, a set-up procedure is simplified while assuring a satisfactory decoding capability with a reduced number of antennas. A transmitter estimates channel information based on reference signals sent from a receiver, determines a transmit antenna weighting coefficient matrix based on the channel information, calculates a weight to be assigned to each of components of a multiplexed signal, and sends, to the receiver, training signals for respective signal components, the training signals being weighted by the calculated weights.
Method for transmitting efficient feedback in multi-antenna wireless communication system and apparatus therefor
The present invention relates to a method for transmitting a signal of a transmitting side in a wireless communication system that supports multiple antennas. More particularly, the method comprises the steps of: receiving, from a receiving side, feedback information for transmitting the signal of the transmitting side; and transmitting a signal to which a precoding matrix (w) is applied on the basis of the feedback information, wherein the precoding matrix (w) is expressed as a multiplication of two precoding matrices (w1 and w2), w1 is set to correspond to a plurality of antenna groups configured according to the feedback information, and w2 is configured such that the signal corresponding to the plurality of antenna groups can be transmitted in a mutual orthogonal way..
Lg Electronics Inc.
Nfc device combining components of antenna driver and shunt regulator
Embodiments of the present disclosure can be used to produce smaller, more compact antenna drivers at a reduced cost. Systems and methods for integrating components of an antenna driver with components of a shunt regulator and clamp are provided.
Antenna unit, radar device, and composite sensor device
A dbf antenna unit including one or more transmitting antennas and a plurality of receiving antennas arranged at a predetermined interval in a horizontal scanning direction. Each of the transmitting antennas and the receiving antennas includes a waveguide provided with a corner bend and a horn expanding in a pyramid-like shape from one end of the waveguide.
Honda Elesys Co., Ltd.
Shared aperture antenna array
A shared aperture antenna array including an array of antennas is disclosed. Elements of neighboring antennas are shared to create additional antennas.
Battelle Memorial Institute
Electrosurgical devices with balun structure for air exposure of antenna radiating section and directing energy to tissue using same
An energy applicator for directing energy to tissue includes a feedline having an inner conductor, an outer conductor and a dielectric material disposed therebetween, and an antenna assembly having a radiating section operably coupled to the feedline. The energy applicator also includes a first balun structure configured to substantially confine energy to the radiating section when the energy applicator is energized and disposed in tissue, and a second balun structure configured to substantially prevent energy emitted from the radiating section from propagating proximal to the second balun structure along the feedline when the energy applicator is energized but not disposed in tissue..
Techniques for mmwave-capable small cell detection
Techniques for millimeter-wave (mmwave)-capable small cell detection are described. In one embodiment, for example, a mobile communication device may comprise at least one radio frequency (rf) transceiver, at least one rf antenna, and logic, at least a portion of which is in hardware, the logic to receive initiator sector sweep (iss) monitoring instructions identifying one or more millimeter-wave (mmwave) frequency channels to be monitored, perform an iss monitoring procedure comprising monitoring the one or more mmwave frequency channels, and send an iss monitoring report indicating whether any mmwave-capable boosters have been detected during the iss monitoring procedure.
Apparatus, system and beam selection for beamformed diversity wireless communication
Some demonstrative embodiments include devices, systems and/or methods of beam selection for beamformed communication. For example, an apparatus may include a controller to control a plurality of antenna subarrays to form a plurality of directional beams for communicating a beamformed diversity wireless transmission over a plurality of selected directional links, which are selected based on at least one predefined selection metric..
Antenna selection with embms
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines at least one signal metric and selects a number of antennas from among a set of antennas for receiving a multicast/broadcast signal based on the at least one signal metric..
Dual antenna topology for bluetooth and ieee 802.11 wireless local area network devices
A method includes determining that an antenna shared between a bluetooth transceiver and a wlan transceiver is available to the wlan transceiver based on an activity signal associated with the bluetooth transceiver. Access to the shared antenna is provided to the wlan transceiver based on the determination, and the wlan transceiver is configured to use diversity in transacting wlan signals via a plurality of antennas, including the shared antenna.
External or internal receiver for smart mobile devices
The present disclosure may provide a receiver configuration and application, which may be used to provide wireless power transmission for smart mobile devices. Specifically, the receiver may include a plurality of antenna elements connected to at least one rectifier and one power converter.
High isolation dual antenna rf switch architectures
Rf circuitry, which includes a first main rf switching circuit and a second main rf switching circuit, is disclosed. The first main rf switching circuit is capable of providing an rf signal path between a first main rf port and a first selected one of a first rf antenna and a second rf antenna.
Rf Micro Devices, Inc.
Radiofrequency determining, by pairs of spacecraft, the relative angular position between a plurality of remote spacecraft
A system comprises: onboard a first craft, called host craft, a triplet of antennas comprising a transmitting and receiving antenna and two transmitting antennas, a transmission chain that can be successively coupled to each antenna of the triplet of antennas by a radiofrequency switch, a reception chain that can be coupled to the transmitting and receiving antenna, and a processing device intended to determine a relative angular position between, on the one hand, the host craft and, on the other hand, a plurality of spacecraft, called companion craft, from measurements of path differences performed and transmitted by the companion craft; onboard the companion craft, a transmitting and receiving antenna, a transmission chain and a reception chain coupled to the transmitting and receiving antenna and a measurement device intended to measure path differences between three signals originating from the three antennas of the triplet of antennas of the host craft.. .
Patient bed with magnetic resonance radio frequency antenna, particularly for use in a magnetic resonance imaging guided therapy system
A patient bed, particularly for use in a magnetic resonance (mr) imaging-guided therapy system employing at least one out of ionizing radiation and ultrasound energy for therapy purposes, having an abdominal support portion (14) for supporting an abdominal region (18) of a subject (12) during magnetic resonance-guided therapy, comprising at least one magnetic resonance (mr) radio frequency (rf) antenna device (48) arranged at a top side (26) of the patient bed in a patient bed center region (30), with at least one mr rf antenna (50) that is enclosed in a housing (52) having two side surfaces (54) opposing each other, wherein, in at least one state of operation, each side surface (54) of the mr rf antenna device (48) is provided to be proximal to an inner side of each of the subject's legs (22), and wherein, in the at least one state of operation, the mr rf antenna device (48) is provided to be proximal to a subject's perineum (20); an mr radio frequency (rf) antenna device (48) therefor; and a therapy system employing at least one out of ionizing radiation and ultrasound energy for therapy purposes that is guided by an mr imaging device with a patient bed having at least one mr radio frequency (rf) antenna device (48).. .
Koninklijke Philips N.v.
Autoconfigured backhaul transceiver
A microwave transceiver comprises a plurality of antenna arrays, each of which is oriented in a different direction, and circuitry operable to automatically select which of the antenna arrays to use for establishing a microwave backhaul link with a link partner. The circuitry may comprise a plurality of front-ends, each of which may be operable to perform beamforming of signals transmitted and received via a respective one of the antenna arrays.
Network discovery in an autoconfigured backhaul transceiver
A microwave backhaul transceiver comprises a plurality of antenna arrays, positioning circuitry, and signal processing circuitry. The microwave backhaul transceiver may determine, via the positioning circuitry, a location of the small cell backhaul transceiver.
Method of communication with distributed antenna array system and array system
Embodiments of the present invention provide a method for communication through a distributed antenna array system and an array system. The antenna array system includes a number of antenna units, a baseband resource pool, a radio frequency resource pool, and a controller.
Huawei Technologies Co., Ltd.
Method for configuring a reconfigurable antenna system
The invention relates to a method (1) for configuring a reconfigurable antenna system (100). The method (1) comprises the following steps: a) selecting one or more groups of antenna configurations in a reference set of antenna configurations; and b) selecting one or more antenna configurations to be tested for each group of antenna configurations, which has been selected at the previous step a); and c) evaluating the radiating performance of said reconfigurable antenna system (100) for each antenna configuration, which has been selected at the previous step b), the radiating performance of said reconfigurable antenna system being evaluated on the base of estimation values that are calculated during one or more testing sessions of said reconfigurable antenna system; and d) selecting the optimal antenna configuration, for which said reconfigurable antenna system (100) has provided the best radiating performance during said testing sessions; and e) if the group of antenna configurations, to which said optimal antenna configuration belongs, comprises only said optimal antenna configuration, configuring said antenna elements (101) according to said optimal antenna configuration; or f) if the group of antenna configurations, to which said optimal antenna configuration belongs, comprises a plurality of antenna configurations, selecting said group of antenna configuration as new reference set of antenna configurations; and g) repeating the previous steps (a)-(d) for said new reference set of antenna configurations..
Adant Technologies, Inc.
Simultaneous nulling and beamfocusing from disparate antennas
In an antenna array, signals may be manipulated to increase coherency at certain locations (beamfocusing) and reduce or cancel the signals at other locations (nulling). This is accomplished by multiplying the signals received or transmitted by the set of antennas by a weight vector that is generated by determining a covariance matrix based on a vector representing signals at the set of antennas, vectors representing the desired beamfocusing and nulling locations, and a desired nulling depth..
The Boeing Company
Antenna allocation cellular mobile communication system
Methods and apparatuses are provided for communicating with a terminal of a base station in a mobile communication system. Configuration information on a plurality of antenna ports of reference signals (rss) which comprise first type antenna ports and second type antenna ports, is transmitted.
Samsung Electronics Co., Ltd.
Method and cancelling interference
A method and apparatus for cancelling interference are disclosed. The method for cancelling interference, performed by a user equipment (ue) includes receiving interference transmission layer restriction information about a neighbor base station (bs) transmitting an interference signal or information about the number of antenna ports used in transmitting the interference signal by the neighbor bs, detecting control information about the interference signal using the interference transmission layer restriction information, and removing the interference signal using the detected control information.
Lg Electronics Inc.
Antenna selection codebook for full dimensional mimo systems
Embodiments of a system and method for beamforming in a wireless network are generally described herein. In some embodiments, an enhanced node b (enb) transmits to user equipment (ue), from a plurality (nc) of antenna ports of a plurality (nt) of transmit antennas, a data signal where signal power is allocated in eigen beams, each of the nt transmit antennas having antenna ports that are adjustable in elevation and in azimuth.