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公开(公告)号：WO2022150856A1
公开(公告)日：2022-07-14
申请号：PCT/US2022/070139
申请日：2022-01-11
Inventor： FOK, Mable P. , LIU, Qidi
Abstract: Various examples are provided related to single channel and multi-channel radio frequency (RF) steganography. In one example, a method includes generating an amplified spontaneous emission (ASE) broadband signal; spectrally slicing the ASE broadband light to achieve taps for generating a dynamic photonic finite impulse response in an RF domain; generating a stealth-modulated broadband optical carrier by combining a stealth signal with the spectrally sliced ASE broadband light; passing the stealth-modulated broadband optical carrier to a dispersive medium to achieve the dynamic photonic FIR in the RF domain; and transmitting the stealth-modulated optical comb carrier via a transmission fiber. The ASE broadband light can have wavelength and intensity corresponding to background noise of a photonic system. In another example, a system for RF steganography includes a stealth transmitter. The stealth transmitter can generate and transmit the stealth-modulated optical comb carrier to a stealth receiver via a transmission fiber.
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公开(公告)号：WO2022046616A1
公开(公告)日：2022-03-03
申请号：PCT/US2021/047108
申请日：2021-08-23
Applicant: M & R TECHNOLOGY, LLC
Inventor： FAZEL, Magid , TAUDIEN, Jerker , TERZIC, Milorad M.
Abstract: Disclosed are systems comprising: a transmitter background; a receiver background; a plurality of transmitter units affixed on the transmitter background, each transmitting an encoded electromagnetic wave (EM), wherein the electromagnetic wave is transmitted as a wide beam; and a plurality of receiver units affixed on the receiver background, wherein each of the plurality of the transmitter units is in electromagnetic communication with at least one of the receiver units. Also disclosed are methods of identifying the presence of an object intersecting a spatial surface.
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3.发明申请
公开(公告)号：WO2021105283A1
公开(公告)日：2021-06-03
申请号：PCT/EP2020/083508
申请日：2020-11-26
Applicant: ELECTDIS AB
Inventor： SWAANS, Laurens , BUON KIONG, Lau
Abstract: Disclosed is a method for transferring data during power transfer in a wireless power transfer system (100). The wireless power transfer system (100) comprises a power transmit device (120) arranged to transfer power over an inductive wireless power transfer interface (105) operating at a transmit frequency to a power receive device (110). The wireless power transfer system (100) is adapted to transfer information at half duplex using Frequency Shift Keying, FSK, in one direction and Amplitude Shift Keying, ASK, in the other direction. The method comprises transferring, at the transmit frequency by the power transmit device (120), power to the power receive device (110) and, during the transferring transmitting, at the transmit frequency by one of the power transmit device (120) or the power receive device (110) a first data packet to the other of the power transmit device (120) or the power receive device (110) using one of two modulation types being FSK or ASK. The method further comprises, during the transmitting, determining, by the device (110, 120) transmitting the first data packet, if a signaling condition is fulfilled, and if the signaling condition is fulfilled, changing a data communication configuration of the device (110, 120) transmitting (311) the first data packet. Further to this, a power transmit device, a power receive device and a test system is disclosed.
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公开(公告)号：WO2020139435A1
公开(公告)日：2020-07-02
申请号：PCT/US2019/054068
申请日：2019-10-01
Applicant: INTEL CORPORATION
Inventor： PREISSL, Christoph , BUCKEL, Tobias , MAYER, Thomas , PREYLER, Peter
Abstract: In a modulation correction method, an adjusted amplitude is determined based on an amplitude between adjacent zero crossings of a modulated signal, the adjacent zero crossings are shifted to determine shifted zero crossings, and the modulated signal is adapted based on the adjusted amplitude and the shifted zero crossings to generate a corrected modulated signal corresponding to the modulated signal.
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5.发明申请
公开(公告)号：WO2020088619A1
公开(公告)日：2020-05-07
申请号：PCT/CN2019/114895
申请日：2019-10-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： KILAMBI, Sai Mohan , HU, Lan
IPC: H04B1/02
Abstract: An apparatus for a signal processor for Wide-Band Applications is provided. The signal processor includes a plurality of parallel branches. Each parallel branch includes a frequency shifter, a sigma-delta-modulator, and a filter. The output signal of each branch is combined via a signal recombiner. The signal processor is suitable for wide-band applications due to centering the zeros of the sigma-delta-modulator's noise transfer function and filter's noise transfer function at the frequency of the frequency shifter in the same branch of the signal processor. Centering these zeros at the frequency of the frequency shifter shapes the quantization noise added by the sigma-delta-modulator away from the input signal frequency to make it easier to remove the quantization noise. This wideband performance is also achieved due to the design of the embodiment's filters. The embodiments of this invention use filters with symmetric transition bands and a pass-band that is wide enough for use in wireless applications.
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Patent Agency Ranking
公开(公告)号：WO2019125237A1
公开(公告)日：2019-06-27
申请号：PCT/SE2017/051291
申请日：2017-12-18
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： HALLIN, Joakim
CPC classification number: H04B1/0475 , H04B1/02
Abstract: A mixer circuitry 100 comprises a mixer (110), an LO leakage detector (120), a digital LO leakage cancellation controller (130) and a DAC arrangement (140). The mixer (110) is configured to mix a first local oscillator, LO, signal having an LO frequency fLo with an intermediate frequency, IF, signal and generate an output signal, i.e. a wanted signal. The LO leakage detector (120) measures the LO leakage at the output of the mixer (110) in the presence of the wanted signal. Then in the digital LO leakage cancellation controller (130), a digital algorithm is run that automatically adjusts the LO leakage in the mixer by steering the digital-to-analog converter arrangement (140) such that the intermediate frequency input signal level to the mixer is adjusted.
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公开(公告)号：WO2019051129A1
公开(公告)日：2019-03-14
申请号：PCT/US2018/049805
申请日：2018-09-06
Applicant: KANDOU LABS, S.A. , KANDOU US, INC.
Inventor： AMIRI, Omid Talebi , TAJALLI, Armin
Abstract: Methods and systems are described for receiving a set of input bits at a plurality of drivers and responsively generating an ensemble of signals, each respective signal of the ensemble of signals generated by receiving a subset of input bits at a respective driver connected to a respective wire of a multi-wire bus, the received subset of bits corresponding to sub-channels associated with the respective wire, generating a plurality of weighted analog signal components, each weighted analog signal component (i) having a corresponding weight and sign selected from a set of wire-specific sub-channel weights associated with the respective wire and (ii) modulated by a corresponding bit of the received subset of bits, and generating the respective signal by forming a summation of the plurality of weighted analog signal components at a common node connected to the respective wire for transmission over the respective wire of the multi-wire bus.
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公开(公告)号：WO2018080822A1
公开(公告)日：2018-05-03
申请号：PCT/US2017/056722
申请日：2017-10-16
Applicant: MICRO PRECISION, LLC
Inventor： TRUONG, Loi Hong , LI, Hui
Abstract: An electronic horn for a train includes a microcontroller and a horn configured to provide an audible output sound, the microcontroller configured to provide one or more signals to the horn indicative of a desired audible output sound from the horn. The microcontroller is configured to vary an intensity of the audible output sound from the horn as a function of a speed of the vehicle. The microcontroller is also configured to vary an intensity of the audible output sound from the horn as a function of a period of time within a calendar. Also, the horn includes a horn body and a compression driver, the horn body being mechanically connected with the compression driver. A feedback loop circuit includes the microcontroller and the compression driver, the feedback loop circuit being configured to control an intensity of the audible output sound from the horn.
Abstract translation: 列车的电子喇叭包括微控制器和被配置为提供可听输出声音的喇叭，微控制器被配置为向喇叭提供指示来自喇叭的期望的可听输出声音的一个或多个信号 。 微控制器被配置为根据车辆的速度改变来自喇叭的可听输出声音的强度。 微控制器还被配置为根据日历内的一段时间改变来自喇叭的可听输出声音的强度。 而且，喇叭包括喇叭主体和压缩驱动器，喇叭主体与压缩驱动器机械连接。 反馈回路包括微控制器和压缩驱动器，反馈回路电路被配置为控制来自喇叭的可听输出声音的强度。
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公开(公告)号：WO2018042273A3
公开(公告)日：2018-03-08
申请号：PCT/IB2017/054639
申请日：2017-07-30
Applicant: BAUMINGER, Ilan
Inventor： BAUMINGER, Ilan
IPC: H04N21/633 , H04N21/6332 , G08C19/02 , G08C19/30 , H04B1/02
Abstract: A system for automatically programming a universal remote control, comprising: a universal remote control device; a database storing data related to a plurality of target device types which may be controlled by said one universal remote control device and data required for automatically programming said universal remote control device; a transmitter configured to transmit command signals towards at least one target device; a signal change detector configured to automatically detect changes in output signals of said at least one target device; a system control unit communicating with said universal remote control device, said transmitter and said signal change detector, said system control unit connected with said database, said system control unit configured to execute automatic programming of said universal remote control device.
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公开(公告)号：WO2018000198A1
公开(公告)日：2018-01-04
申请号：PCT/CN2016/087495
申请日：2016-06-28
Applicant: 华为技术有限公司
Abstract: 本发明的实施例提供一种数据发送和接收的方法、装置及系统，涉及通信领域，该方法包括：接收通用公共无线接口CPRI帧，从所述CPRI帧中获取控制字CW和天线载波I/Q数据，其中，所述天线载波I/Q数据包括第一I/Q数据；对所述CW进行调制，得到调制后的CW；将所述第一I/Q数据复制成两部分，对第一部分进行调制，得到调制后的第一I/Q数据；判断微波信道的信道质量是否满足要求，如果所述微波信道的信道质量不满足要求，根据所述调制后的第一I/Q数据和所述调制后的CW生成第一微波空口帧，通过所述微波信道将所述第一微波空口帧发送出去。本发明实施例能够满足微波系统的传输距离，且频谱利用率高。
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