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Center Frequency

Center Frequency-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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NEW Radio-frequency localization techniques and associated systems, devices, and methods
Humatics Corporation
June 22, 2017 - N°20170181118

A system comprising a first interrogator device that includes: a first antenna configured to transmit, to a target device, a first radio-frequency (rf) signal having a first center frequency; a second antenna configured to receive, from the target device, a second rf signal having a second center frequency that is a harmonic of the first frequency; and first circuitry configured ...
NEW Multi-spectral radio-frequency localization techniques and associated systems, devices and methods
Humatics Corporation
June 22, 2017 - N°20170179602

A device comprising: a receive antenna configured to receive a first radio-frequency (rf) signal having a first center frequency; a first transmit antenna configured to transmit a second rf signal having a second center frequency that is a harmonic of the first center frequency; a second transmit antenna configured to transmit a third rf signal having a third center frequency ...
NEW Chip-scale radio-frequency localization devices and associated systems and methods
Humatics Corporation
June 22, 2017 - N°20170179571

A device comprising: a substrate; a semiconductor die mounted on the substrate; a transmit antenna fabricated on the substrate and configured to transmit radio-frequency (rf) signals at least at a first center frequency; a receive antenna fabricated on the substrate and configured to receive rf signals at least at a second center frequency different than the first center frequency; and ...
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Vht operation information subfield design in wlan
Mediatek Inc.
June 15, 2017 - N°20170171796

A method of very high throughput (vht) operation information subfields design for ieee 802. 11 wlan is proposed. The vht operation information subfields comprise a channel width, a channel center frequency segment 0 (ccfs0), and a channel center frequency segment 1 (ccfs1). Multiple definitions of the vht operation information subfields have been adopted by different access points (ap)s and wireless stations (stas). In ...
Flat-top tunable filter
Lumentum Operations Llc
June 15, 2017 - N°20170168241

A tunable plc optical filter having sequentially connected thermally tunable mach-zehnder (mz) interferometers is described. The cascade of mz interferometers, each having a free spectral ranges matching itu frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any ...
Extremely high frequency (ehf) distributed antenna systems, and related components and methods
Corning Optical Communications Llc
June 08, 2017 - N°20170163341

Extremely high frequency (ehf) distributed antenna systems and related components and methods are disclosed. In one embodiment, a base unit for distributing ehf modulated data signals to a rau(s) is provided. The base unit includes a downlink data source input configured to receive downlink electrical data signal(s) from a data source. The base unit also includes an e-o ...
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In-vehicle radar apparatus
Denso Corporation
June 01, 2017 - N°20170153315

An in-vehicle radar apparatus includes an interference determination means, a selection means, and a frequency changing means. The interference determination means determines presence or absence of interference between multifrequency cws, which are radar waves, based on a beat signal generated by mixing a transmission signal and a received signal, which are radar waves. The selection means selects an own vehicle ...
Digitally tunable coaxial resonator reflective band reject (notch) filter
Denso Corporation
May 25, 2017 - N°20170149109

A coaxial tunable band stop filter utilizes tuning elements, such as pin diodes and varactor diodes, for electrically tuning a coaxial resonator to change the resonance frequency of the coaxial resonators. A voltage is applied to the tuning elements to change their capacitance, such that they electrically lengthen and shorten the coaxial resonator. The variable voltages work to change the ...
A filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
Dynaspot Corp.
May 18, 2017 - N°20170141761

The trans-filter compresses in band awgn, demodulates input signals and has no threshold due to applied noise. Two frequency selective networks with opposite amplitude vs frequency slopes are designed to remain 180 degrees out of phase over the signal band. Output amplitudes are equal at band center and are summed producing a monotonic amplitude vs frequency characteristic going thru zero at ...
Integrated microwave-millimeter wave antenna system with isolation enhancement mechanism
King Fahd University Of Petroleum And Minerals
May 18, 2017 - N°20170141465

The integrated microwave-millimeter wave antenna system with isolation enhancement mechanism is a planar, compact, multi-band microwave multiple-input-multiple-output (mimo) antenna system integrated with a millimeter wave antenna array. The microwave mimo antenna system covers multiple standards between (700-6000) mhz, while the millimeter wave array covers a wider bandwidth of at least 1 ghz with a center frequency ranging from 28-38 ghz. The ...
Magnetic-resonance imaging apparatus
Toshiba Medical Systems Corporation
May 18, 2017 - N°20170139023

A magnetic-resonance imaging apparatus of an embodiment includes a gradient coil, a transmitter coil, and a processing circuitry. The gradient coil applies a gradient magnetic field to an imaging space in which a subject is placed. The transmitter coil applies a rf (radio frequency) pulse to the imaging space. The processing circuitry calculates a target temperature of the gradient coil ...
Capacitive micromachined ultrasound transducers having varying properties
Kolo Medical, Ltd.
May 18, 2017 - N°20170136495

In some examples, a cmut array may include a plurality of elements, and each element may include a plurality of sub-elements. For instance, a first sub-element and a second sub-element may be disposed on opposite sides of a third sub-element. In some cases, the third sub-element may be configured to transmit ultrasonic energy at a higher center frequency than at ...
Flexible grid optical spectrum transmitter, receiver, and transceiver
Ciena Corporation
May 11, 2017 - N°20170134114

A flexible grid optical transmitter communicatively coupled to an optical network includes a coherent optical transmitter configured to generate a signal at a respective center frequency on an optical spectrum and spanning n bins about the respective center frequency, wherein n is an integer greater than 1, wherein the respective center frequency and the n bins are utilized to perform operations, ...
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Systems and methods for frequency error corrections in communication systems
Entropic Communications, Llc
May 04, 2017 - N°20170126310

Systems and methods for correcting frequency error in a received signal include: receiving a satellite signal, the satellite signal having a bandwidth and a center frequency; determining the profile of the satellite signal; computing the center frequency of the satellite signal based on the profile of the received signal; and generating a reference signal at the computed center frequency. The ...
Hybrid multimode network analyzer
Keysight Technologies, Inc.
April 20, 2017 - N°20170111127

Network analysis employs a band-limited multi-tone test signal having a tunable center frequency to test a device under test (dut). A hybrid network analyzer includes a test signal source to provide the band-limited multi-tone test signal, and a local oscillator (lo) source to provide a tunable lo signal configured to track the tunable center frequency of the band-limited multi-tone test ...
Method and data processing device for severity assessment of bearing defects using vibration energy
Aktiebolaget Skf
April 20, 2017 - N°20170108406

Method for detecting bearing defect severity based on bearing rotation speed and at least one data sample of sensor data obtained to measure vibrations of a bearing ring is provided. The method includes converting the data sample from time domain to frequency domain to obtain a signal frequency spectrum; determining a defect center frequency of the bearing using the rotation ...
Sensor systems and methods utilizing band pass filter tuning
Infineon Technologies Ag
April 06, 2017 - N°20170099169

A communication system having a configurable bandpass filter is disclosed. The system includes a bandpass filter and a bandpass controller. The bandpass filter has an adjustable center frequency. The bandpass controller is configured to identify a frequency shift in a master in or received signal and to shift the center frequency of the bandpass filter according to the identified frequency ...
Receiver and communication system
Sii Semiconductor Corporation
March 30, 2017 - N°20170093354

There is provides a single conversion receiver and a communication system having wide occupied frequency bands and good receiving sensitivity. The single conversion receiver includes: a first bandpass filter that lets only a desired band of a received rf signal pass through; a first mixer that converts the rf signal passing through the first bandpass filter into a first intermediate ...
Systems and methods for measuring the frequency of signals generated by high frequency medical devices
Covidien Lp
March 30, 2017 - N°20170089962

A digital measurement system includes an oscillator, a mixer, and a controller coupled to each other. The oscillator provides a reference signal having a second frequency. The mixer generates a down-converted signal based on the output signal and the reference signal. The controller then determines a characteristic of the output signal (e. G., frequency or phase) based on the down-converted ...
Communication method
Kyynel Oy
March 16, 2017 - N°20170079041

A solution for operating a radio communication apparatus communicating with at least one other apparatus is provided. In communication, a frequency block of a set of frequency blocks having a given center frequency is utilized. The center frequencies of at least some adjacent frequency blocks are separated by a given frequency offset. The offset is selected such that the adjacent ...
High isolation power combiner/splitter and coupler
Kyynel Oy
March 16, 2017 - N°20170077892

A power combiner has at least two uncommon ports and at least one common port. Isolation between the uncommon ports over a broad band is achieved through a lossy band response circuit having a phase and amplitude response effective to compensate for changes in phase and amplitude between the uncommon ports with change in frequency of an input signal. The ...
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