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    GaN based active cancellation circuit for high power simultaneous transmit and receive systems
    2.
    发明授权
    GaN based active cancellation circuit for high power simultaneous transmit and receive systems 有权
    基于GaN的主动消除电路，用于大功率同时发射和接收系统

    公开(公告)号：US09331735B1

    公开(公告)日：2016-05-03

    申请号：US14284654

    申请日：2014-05-22

    申请人： HRL Laboratories, LLC

    发明人： Alexandros D. Margomenos ,  Miroslav Micovic ,  Ara K. Kurdoghlian

    IPC分类号： H04B1/44

    CPC分类号： H04B1/525

    摘要： A cancellation circuit for a simultaneous transmit and receive system includes a variable attenuator, a variable coarse true time delay a variable fine true time delay, the variable fine true time delay having a cancellation signal output, a circulator coupled to a transmit signal and having a receive signal input and having an output having a sum of the receive signal and a leakage signal, the leakage signal being a portion of the transmit signal leaking through the circulator, a 180° hybrid having a delta output having a difference between the sum of the receive signal and a leakage signal and the cancellation signal, and a control circuit coupled to the delta output and the variable attenuator, the variable coarse true time delay, and the variable fine true time delay to adjust an amplitude and phase of the cancellation signal.

    摘要翻译： 用于同时发送和接收系统的消除电路包括可变衰减器，可变粗真实时间延迟，可变精细真实时间延迟，具有消除信号输出的可变精细真实时间延迟，耦合到发射信号的循环器， 接收信号输入并且具有接收信号和泄漏信号之和的输出，泄漏信号是通过循环器泄露的发射信号的一部分，具有Δ输出的180°混合，其具有在 接收信号和泄漏信号和消除信号，以及耦合到增量输出和可变衰减器的控制电路，可变粗真实时间延迟和可变精细真实时间延迟，以调整抵消信号的幅度和相位。

    Shunt resistor and capacitor termination for broadband resistive mixer
    4.
    发明授权
    Shunt resistor and capacitor termination for broadband resistive mixer 有权
    用于宽带电阻混频器的分流电阻和电容端接

    公开(公告)号：US09130508B1

    公开(公告)日：2015-09-08

    申请号：US13930935

    申请日：2013-06-28

    申请人： HRL LABORATORIES, LLC

    发明人： Jongchan Kang ,  Ara K. Kurdoghlian

    IPC分类号： G06F7/44 ,  H03D7/14

    CPC分类号： H03D7/1483 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466

    摘要： A mixer including a field effect transistor having a source, a drain and a gate, an input port coupled to the source or to the drain of the field effect transistor, an output port coupled to the drain of the field effect transistor if the input port is coupled to the source, or coupled to the source of the field effect transistor if the input port is coupled to the drain, a local oscillator for mixing a first frequency on the input port to a second frequency on the output port, a first micro-strip line coupling the local oscillator to the gate, and a shunt resistor capacitor termination coupled to the gate. The shunt resistor capacitor termination includes a resistor in series with a capacitor.

    摘要翻译： 一种混频器，包括具有源极，漏极和栅极的场效应晶体管，耦合到场效应晶体管的源极或漏极的输入端口，如果输入端口连接到场效应晶体管的漏极，则输出端口 耦合到源极，或者如果输入端口耦合到漏极，则耦合到场效应晶体管的源极，用于将输入端口上的第一频率混合到输出端口上的第二频率的本地振荡器，第一微型 - 将本地振荡器耦合到栅极的线路线，以及耦合到栅极的分流电阻器电容器终端。 分流电阻电容端接包括与电容器串联的电阻器。

    High performance GaN operational amplifier with wide bandwidth and high dynamic range
    8.
    发明授权
    High performance GaN operational amplifier with wide bandwidth and high dynamic range 有权
    具有宽带宽和高动态范围的高性能GaN运算放大器

    公开(公告)号：US09276529B1

    公开(公告)日：2016-03-01

    申请号：US14506070

    申请日：2014-10-03

    申请人： HRL Laboratories, LLC

    发明人： David F. Brown ,  Miroslav Micovic ,  Ara K. Kurdoghlian ,  Alexandros Margomenos

    IPC分类号： H03F3/45 ,  H03F1/48 ,  H03F3/193 ,  H03F3/68

    CPC分类号： H03F3/45179 ,  H03F3/193 ,  H03F3/195 ,  H03F3/45183 ,  H03F2200/408 ,  H03F2200/451 ,  H03F2203/45051 ,  H03F2203/45394 ,  H03F2203/45512 ,  H03F2203/45528 ,  H03F2203/45644 ,  H03F2203/45648 ,  H03F2203/45652

    摘要： An operational amplifier includes three transconductance stages (TSs) each having a differential input and a differential output, a first and second resistor coupled between the differential output of the first TS and the differential input of the first TS, a third and fourth resistor coupled between the differential output of the third TS and the differential input of the first TS, a first and second capacitor coupled between the differential output of the third TS and the differential input of the third TS, wherein the first, second, and third TSs each include a differential input amplifier coupled to the differential input of the respective TS, a differential output amplifier coupled to the differential output of the respective TS, and a plurality of Schottky diodes coupled between the differential input amplifier and the differential output amplifier for voltage level shifting.

    摘要翻译： 运算放大器包括三个跨导级（TS），每个跨导级具有差分输入和差分输出;耦合在第一TS的差分输出和第一TS的差分输入之间的第一和第二电阻，耦合在第一TS的差分输出之间的第三和第四电阻 第三TS的差分输出和第一TS的差分输入，耦合在第三TS的差分输出与第三TS的差分输入之间的第一和第二电容器，其中第一，第二和第三TS各自包括 耦合到相应TS的差分输入的差分输入放大器，耦合到相应TS的差分输出的差分输出放大器以及耦合在差分输入放大器和用于电压电平转换的差分输出放大器之间的多个肖特基二极管。