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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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Switching frequency modulation in a switched mode power supply
Infineon Technologies Austria Ag
April 19, 2018 - N°20180109198

In accordance with an embodiment, a method includes driving at least one electronic switch coupled to at least one inductor in a converter stage of a switched mode power supply based on a clock signal, and modulating a clock frequency of the clock signal over a predefined first frequency range around a center frequency such that a frequency spectrum of ...
Full-spectrum covering ultra wideband all photonics-based radar system
Shanghai Jiao Tong University
April 19, 2018 - N°20180106904

A full-spectrum covering ultra wideband full-photonics based radar system comprising a signal transmitter, a transceiver module, and a signal receiver. The signal transmitter comprises a mode-locked laser, a first dispersion module, a first optical coupler, a second optical coupler, a first optical filter, a second dispersion module, a second optical filter, a first adjustable time delay module, a third optical ...
Reconfigurable antenna array and associated method of use
University Of Central Florida Research Foundation, Inc.
April 12, 2018 - N°20180102593

A reconfigurable antenna array capable of utilizing a common antenna aperture which can cover a wide frequency range in a continuous way. With the basic antenna element based on a slot-ring and using a self similar structure approach and re' switches, the antenna array operates without grating lobes. The antenna array exhibits polarization diversity and single-side radiation capability. When varactors ...
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Monitoring an asset using görtzel filters
Epro Gmbh
April 12, 2018 - N°20180100761

An apparatus monitors physical signals, such as vibration, produced by an asset, such as a motor. Sensor signals corresponding to the physical signals are applied to a bandpass görtzel filter that passes a frequency band around a characteristic frequency of a physical signal. An analyzer produces information corresponding to the physical condition of the asset based on the ...
Handling dc subcarrier in narrow bandwidth communications
Telefonaktiebolaget Lm Ericsson (publ)
April 05, 2018 - N°20180097676

A method is disclosed that includes configuring (202) a ue in a cell to operate with a center frequency of a radio frequency, rf, reception band-width of the ue receiver is different than the center frequency of an rf transmission bandwidth of the cell; puncturing (204) a subcarrier in a downlink signal that, when transmitted over the rf transmission bandwidth corresponds to ...
Width-tunable single-frequency fiber laser light source for coherent optical orthogonal frequency division multiplexing system
South China University Of Technology
April 05, 2018 - N°20180097332

A width-tunable single-frequency fiber laser light source for coherent optical orthogonal frequency division multiplexing system including a chirped fiber grating with high reflectivity, a high gain optical fiber, a chirped fiber grating with low reflectivity, a single-mode semiconductor pump laser, an optical wavelength division multiplexer, an optical coupler, an optical circulator, and a tunable optical filter module is provided. The ...
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Methods and apparatus for array-based compressed sensing
March 22, 2018 - N°20180083816

An array-based compressed sensing receiver architecture (acra) includes an antenna array with two or more antennas connected to two or more adcs that are clocked at two or more different sampling rates below the nyquist rate of the incident signals. Comparison of the individual aliased outputs of the adcs allows for estimation of signal component characteristics, including signal bandwidth, center ...
Blind source separation of signals having low signal-to-noise ratio
The Boeing Company
March 22, 2018 - N°20180083656

A blind source separation (bss) system comprises means for gathering wideband signal power spectral information without using special fourier transform hardware/software systems and without using extremely large signal memories. The method involves taking the combined energy output of a large set of bss filters that are operating under a blind source separation algorithm that looks for signals of interest, ...
Systems and methods for pulse descriptor word generation using blind source separation
Hrl Laboratories
March 15, 2018 - N°20180074171

A method for generating pulse descriptor words (pdws) including frequency and/or bandwidth data from time-varying signals received by a sensor includes filtering, at a plurality of blind source separation (bss) modules, signals derived from the time-varying signals, each bss module including a filtering subsystem having a plurality of filter modules. Each filter module has a frequency filter coefficient (...
Systems and methods for an optical logic device
King Fahd University Of Petroleum And Minerals
March 08, 2018 - N°20180067378

In one example, an optical logic device includes a distributed feedback laser configured to generate a first signal corresponding to distributed feedback laser output signal, the first signal being at a first wavelength. The device further includes a bandpass filter having a center frequency corresponding to the first wavelength. Additionally, the device can include an optical circulator having a first ...
Extremely high frequency (ehf) distributed antenna systems, and related components and methods
Corning Optical Communications Llc
March 01, 2018 - N°20180062743

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 ...
Methods for transmitting data between a terminal and a frequency-synchronized access network on an uplink ...
Sigfox
February 22, 2018 - N°20180054815

A method for transmitting, by a terminal of a wireless communication system, uplink messages on an uplink to an access network. A sequence of nr uplink messages is formed. Each uplink message of the sequence includes a same useful data packet and control data having an identifier for identifying the uplink message from the nr uplink messages of the sequence. ...
Method and apparatus for handling dc subcarrier in nr carrier in wireless communication system
Lg Electronics Inc.
February 01, 2018 - N°20180035416

A method and apparatus for operating in a new radio access technology (nr) carrier in a wireless communication system is provided. A user equipment (ue) receives an indication of a system bandwidth and a center frequency of the system bandwidth from a network, and operates subbands in the nr carrier according to the indication. The center frequency of the system ...
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Optical transmitter, optical receiver and optical transmission method
Fujitsu Limited
January 25, 2018 - N°20180026724

An optical transmitter includes: a light source configured to generate cw light; a drive signal generator configured to generate a drive signal; an optical modulator configured to modulate the cw light with the drive signal so as to generate a first optical signal; a combiner configured to combine the first optical signal and a second optical signal generated by using ...
High isolation power combiner/splitter and coupler
January 25, 2018 - N°20180026601

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 ...
Broadband matching network
Comet Ag
January 25, 2018 - N°20180026589

The invention describes a broadband matching network for coupling to an output of an amplifying device for amplifiers with a nominal operating frequency between 1 mhz and 100 mhz. The broadband matching network comprises a planar transformer with a primary winding arranged on a primary side of the broadband matching network and a secondary winding arranged on a secondary side of the ...
Multiple network allocation vector operation
Newracom, Inc.
January 11, 2018 - N°20180014293

A first wireless device may determine a bandwidth for transmitting a frame, calculate two or more spatial reuse (sr) parameter values for the bandwidth, set, using the sr parameter values, first and second sr fields of the frame based on the bandwidth and a channel center frequency in which the bandwidth is carried, and transmit the frame to a second ...
Bicycle controller, bicycle component, and bicycle control system
Shimano Inc.
January 11, 2018 - N°20180009508

A bicycle controller is configured to communicate with a first bicycle component that transmits a first wireless signal and a second bicycle component that transmits a second wireless signal. The bicycle controller includes an interface configured to receive the first wireless signal and the second wireless signal. The first wireless signal has a center frequency that is a first frequency. ...
Filter and multiplexer
Taiyo Yuden Co., Ltd.
December 28, 2017 - N°20170373668

A filter includes: one or more series resonators connected in series between an input terminal and an output terminal, the one or more series resonators including a series resonator located closest to the output terminal, the series resonator located closest to the output terminal having a resonant frequency that is 99. 6% or less of or 102. 2% or greater of a center frequency ...
Frequency diversity pulse pair determination for mitigation of radar range-doppler ambiguity
U.s.a. As Represented By The Administrator Of The National Aeronautics And Space Administration
December 21, 2017 - N°20170363715

The disclosed subject matter relates to frequency diversity pulse pair (fdpp) methods and technology implemented by, alternating the order of the pulse pair transmitted or order of the group of multiple pulses transmitted, the pulses differentiated based on the center frequency of each transmitted pulse. For example, where a pair of transmitted pulses have center frequencies f1 and f2, the ...
Radio-frequency localization techniques and associated systems, devices, and methods
Humatics Corporation
December 21, 2017 - N°20170363709

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 ...
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