RECONFIGURABLE WIDEBAND HIGH-FREQUENCY FILTER USING NON-RECIPROCAL CIRCULATOR

    公开(公告)号:US20210384599A1

    公开(公告)日:2021-12-09

    申请号:US17307261

    申请日:2021-05-04

    Abstract: A method includes receiving a radio frequency (RF) input signal using at least one non-reciprocal circulator. The method also includes generating an RF output signal using at least one of multiple reflective filter elements. Each reflective filter element is configured to receive an RF signal from the at least one non-reciprocal circulator and to provide a filtered RF signal to the at least one non-reciprocal circulator. The reflective filter elements include amplitude change reflectors configured to modify amplitudes of the RF signal at different frequencies. The RF output signal represents the RF input signal as modified by the at least one of the reflective filter elements.

    FREQUENCY SELECTIVE LIMITER
    13.
    发明申请

    公开(公告)号:US20180366803A1

    公开(公告)日:2018-12-20

    申请号:US15627913

    申请日:2017-06-20

    Abstract: A frequency selective limiter (FSL) is provided having a transmission line structure with a tapered width. The FSL includes a substrate having a magnetic material, a signal (or center) conductor disposed on the substrate and first and second ground plane conductors disposed on the substrate. The signal conductor having a first end with a first width and a second end with a second different width such that the signal conductor is provided having a taper between the first and second ends of the signal conductor. First and second ground plane conductors are spaced apart from first and second edges of signal conductor, respectively, by a distance that changes from the first end of signal conductor to the second end of signal conductor such that signal conductor, and first and second ground plane conductors form a co-planar waveguide transmission line.

    Frequency source with improved phase noise

    公开(公告)号:US09705513B2

    公开(公告)日:2017-07-11

    申请号:US14560824

    申请日:2014-12-04

    CPC classification number: H03L7/093 H03H7/06 H03L7/089

    Abstract: A frequency source with improved phase noise. In one embodiment a phase-locked loop is used as a component of a frequency source and a signal to noise enhancer (SNE) is used to suppress phase noise produced by the phase-locked loop. The signal to noise enhancer is 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 being 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.

    Frequency conversion system with improved spurious response and frequency agility
    15.
    发明授权
    Frequency conversion system with improved spurious response and frequency agility 有权
    具有改善的杂散响应和频率敏捷性的变频系统

    公开(公告)号:US09548788B2

    公开(公告)日:2017-01-17

    申请号:US14560834

    申请日:2014-12-04

    CPC classification number: H04B1/68 H04B1/30 H04B15/04

    Abstract: A frequency conversion system with improved performance. In one embodiment an image reject mixer is used to perform frequency conversion providing an initial degree of suppression of the image and local oscillator leakage signals, and a signal to noise enhancer (SNE) is used to further suppress the image and local oscillator signals, 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: 具有改进性能的变频系统。 在一个实施例中,使用图像抑制混频器来执行频率转换,提供图像的初始抑制程度和本地振荡器泄漏信号,并且使用信噪比增强器(SNE)来进一步抑制图像和本地振荡器信号, 信噪比增强器是一种非线性无源器件,可在损耗较小的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。

    LINEAR SAMPLER
    16.
    发明申请
    LINEAR SAMPLER 有权
    线性采样器

    公开(公告)号:US20150303962A1

    公开(公告)日:2015-10-22

    申请号:US14256214

    申请日:2014-04-18

    CPC classification number: H04B1/28 H03D7/165 H04B1/16

    Abstract: A frequency conversion circuit having a plurality of N signal channels, each being fed an input signal and a train of pluses having a period T and a duty cycle T/N. Each signal channel includes: a column III-V semiconductor sampler coupled the input signal and being responsive to sampling signals; and a column IV semiconductor controllable time delay for producing the train of sampling signals in response to a train of pulses produced on the column IV semiconductor, the time delay imparting a time delay to the pulses in accordance with a time delay command signal fed to the time delay. Each one of the sampling signals is produced by the time delay in each one of the channels with the period T and the duty cycle T/N with the sampling signals in one of the trains of the sampling signals being delayed with respect to the sampling signals in another one of the trains the sampling signals a time T/N.

    Abstract translation: 一种具有多个N个信号通道的频率转换电路,每个信号通道馈送有输入信号和一个具有周期T和占空比T / N的脉冲串。 每个信号通道包括:耦合输入信号并对采样信号作出响应的列III-V半导体采样器; 以及列IV半导体可控时间延迟,用于响应于在列IV半导体上产生的脉冲序列产生采样信号序列,所述延时根据馈送到所述第一IV半导体的时间延迟命令信号向脉冲施加时间延迟 时间延迟 采样信号中的每一个由具有周期T和占空比T / N的每个信道中的时间延迟产生,采样信号的列中的一个采样信号相对于采样信号被延迟 在另一列火车中,采样信号为时间T / N。

    RECONFIGURABLE GALLIUM NITRIDE (GAN) ROTATING COEFFICIENTS FIR FILTER FOR CO-SITE INTERFERENCE MITIGATION

    公开(公告)号:US20210376818A1

    公开(公告)日:2021-12-02

    申请号:US16885973

    申请日:2020-05-28

    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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