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公开(公告)号：US10393859B2
公开(公告)日：2019-08-27
申请号：US15295084
申请日：2016-10-17
Applicant: RAYTHEON COMPANY
Inventor： Harry B. Marr , John P. Gianvittorio , Jeffrey Caldwell , Samuel E. Parker , John Cangeme
Abstract: Method and apparatus for leakage signal cancellation in a simultaneous transmit and receive RF system includes: generating a digital transmit signal for transmission from the system; receiving a receive signal produced by reflection of the transmit signal from an object or generated by a second RF system; adaptively filtering the transmit signal by an adaptive finite input response (FIR) filter; calculating filter coefficients for the adaptive FIR filter in real-time at a different sampling rate; adaptively inputting the calculated filter coefficients to the adaptive FIR filter to generate a cancellation signal in real-time; and applying the cancellation signal to the receive signal to cancel leakage in the receive signal to generate an optimum receive signal.
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公开(公告)号：US09520909B2
公开(公告)日：2016-12-13
申请号：US14560842
申请日：2014-12-04
Applicant: RAYTHEON COMPANY
Inventor： Tina P. Srivastava , Matthew A. Morton , John Cangeme
Abstract: A transmit drive circuit with high signal to noise and frequency agility. In one embodiment, a transmit circuit includes a digital to analog converter, an amplifier, and a signal to noise enhancer, the signal to noise enhancer being a nonlinear passive device that attenuates low-power signals while transmitting high power signals with little loss. The signal to noise enhancer may be fabricated as a thin film of yttrium iron garnet (YIG) epitaxially grown on a gadolinium gallium garnet (GGG) substrate, the GGG substrate secured to a microwave transmission line from the input to the output of the signal to noise enhancer, such that the thin film of yttrium iron garnet is close to the transmission line.
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Patent Agency Ranking
公开(公告)号：US11522525B2
公开(公告)日：2022-12-06
申请号：US16885973
申请日：2020-05-28
Applicant: RAYTHEON COMPANY
Inventor： Ajay Subramanian , Zhaoyang C. Wang , Matthew A. Morton , Jack Holloway , John Cangeme
Abstract: A finite impulse response (FIR) filter including an input of the FIR filter that receives an RF input signal, a clock input configured to receive a clock signal, an output of the FIR filter that provides a filtered output signal, a plurality of signal paths including a plurality of sample-and-hold circuits and a plurality of multipliers arranged in parallel, each signal path including a respective sample-and-hold circuit and a respective multiplier being configured to receive the RF input signal and the clock signal to provide a modulated output signal, an adder configured to receive n modulated output signals from the plurality of signal paths and combine the n modulated output signals to produce the filtered output signal, and a controller.
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公开(公告)号：US20210376818A1
公开(公告)日：2021-12-02
申请号：US16885973
申请日：2020-05-28
Applicant: RAYTHEON COMPANY
Inventor： Ajay Subramanian , Zhaoyang C. Wang , Matthew A. Morton , Jack Holloway , John Cangeme
IPC: H03H17/02
Abstract: A finite impulse response (FIR) filter including an input of the FIR filter that receives an RF input signal, a clock input configured to receive a clock signal, an output of the FIR filter that provides a filtered output signal, a plurality of signal paths including a plurality of sample-and-hold circuits and a plurality of multipliers arranged in parallel, each signal path including a respective sample-and-hold circuit and a respective multiplier being configured to receive the RF input signal and the clock signal to provide a modulated output signal, an adder configured to receive n modulated output signals from the plurality of signal paths and combine the n modulated output signals to produce the filtered output signal, and a controller.
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公开(公告)号：US20180106884A1
公开(公告)日：2018-04-19
申请号：US15295084
申请日：2016-10-17
Applicant: RAYTHEON COMPANY
Inventor： Harry B. Marr , John P. Gianvittorio , Jeffrey Caldwell , Samuel E. Parker , John Cangeme
IPC: G01S7/35
Abstract: Method and apparatus for leakage signal cancellation in a simultaneous transmit and receive RF system includes: generating a digital transmit signal for transmission from the system; receiving a receive signal produced by reflection of the transmit signal from an object or generated by a second RF system; adaptively filtering the transmit signal by an adaptive finite input response (FIR) filter; calculating filter coefficients for the adaptive FIR filter in real-time at a different sampling rate; adaptively inputting the calculated filter coefficients to the adaptive FIR filter to generate a cancellation signal in real-time; and applying the cancellation signal to the receive signal to cancel leakage in the receive signal to generate an optimum receive signal.
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公开(公告)号：US09571134B2
公开(公告)日：2017-02-14
申请号：US14560842
申请日：2014-12-04
Applicant: RAYTHEON COMPANY
Inventor： Tina P. Srivastava , Matthew A. Morton , John Cangeme
CPC classification number: H04B1/0475 , H03H2/001
Abstract: A transmit drive circuit with high signal to noise and frequency agility. In one embodiment, a transmit circuit includes a digital to analog converter, an amplifier, and a signal to noise enhancer, the signal to noise enhancer being a nonlinear passive device that attenuates low-power signals while transmitting high power signals with little loss. The signal to noise enhancer may be fabricated as a thin film of yttrium iron garnet (YIG) epitaxially grown on a gadolinium gallium garnet (GGG) substrate, the GGG substrate secured to a microwave transmission line from the input to the output of the signal to noise enhancer, such that the thin film of yttrium iron garnet is close to the transmission line.
Abstract translation: 具有高信噪比和频率敏捷性的发射驱动电路。 在一个实施例中，发射电路包括数模转换器，放大器和信噪比增强器，所述信噪比增强器是非线性无源器件，其在以很小的损耗传输大功率信号的同时衰减低功率信号。 信号噪声增强器可以制造为在钆镓石榴石（GGG）衬底上外延生长的钇铁石榴石（YIG）的薄膜，GGG衬底固定到微波传输线，从输入到信号的输出到 噪声增强器，使得钇铁石榴石的薄膜接近传输线。
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公开(公告)号：US20160164552A1
公开(公告)日：2016-06-09
申请号：US14560842
申请日：2014-12-04
Applicant: RAYTHEON COMPANY
Inventor： Tina P. Srivastava , Matthew A. Morton , John Cangeme
IPC: H04B1/04
CPC classification number: H04B1/0475 , H03H2/001
Abstract: A transmit drive circuit with high signal to noise and frequency agility. In one embodiment, a transmit circuit includes a digital to analog converter, an amplifier, and a signal to noise enhancer, the signal to noise enhancer being a nonlinear passive device that attenuates low-power signals while transmitting high power signals with little loss. The signal to noise enhancer may be fabricated as a thin film of yttrium iron garnet (YIG) epitaxially grown on a gadolinium gallium garnet (GGG) substrate, the GGG substrate secured to a microwave transmission line from the input to the output of the signal to noise enhancer, such that the thin film of yttrium iron garnet is close to the transmission line.
Abstract translation: 具有高信噪比和频率敏捷性的发射驱动电路。 在一个实施例中，发射电路包括数模转换器，放大器和信噪比增强器，所述信噪比增强器是非线性无源器件，其在以很小的损耗传输高功率信号的同时衰减低功率信号。 信号噪声增强器可以制造为在钆镓石榴石（GGG）衬底上外延生长的钇铁石榴石（YIG）的薄膜，GGG衬底固定到微波传输线，从输入到信号的输出到 噪声增强器，使得钇铁石榴石的薄膜接近传输线。
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