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    • 4. 发明授权
    • Adjustable microwave power divider
    • 可调微波功率分配器
    • US5467063A
    • 1995-11-14
    • US125055
    • 1993-09-21
    • Richard W. BurnsDarren E. Atkinson
    • Richard W. BurnsDarren E. Atkinson
    • H01P5/12
    • H01P5/12
    • An adjustable microwave power divider circuit (50), providing the capability of adjusting the power division ratio after the device has been fabricated. The device includes three 90 degree transmission line networks (60, 70, 80) incorporating open transmission line stubs (66, 76, 86), two networks (70, 80) as power division networks, and the third network (60) as an input impedance matching network. A series isolation resistor (90) is connected across the outputs of the power division networks. In operation, an input signal is split between the two power division networks (70, 80) with equal voltage and phase. The power split between the two outputs is adjusted by adjusting the open stub length, thereby varying the characteristic impedance level between the two power division networks. Any signal reflected back into any one of the power divider networks is absorbed by the isolation resistor. The stub length can be trimmed after device fabrication using a laser or abrasion system.
    • 一种可调微波功率分配器电路(50),提供了在器件制造之后调整功率分配比的能力。 该设备包括三个90度传输线网络(60,70,80),其包含开放的传输线路短线(66,76,86),作为功率分配网络的两个网络(70,80),并且第三网络(60)作为 输入阻抗匹配网络。 串联隔离电阻(90)连接在功率分配网络的输出端。 在操作中,输入信号在具有相等电压和相位的两个功率分配网络(70,80)之间分配。 通过调整开路短截线长度来调整两个输出之间的功率分配,从而改变两个功率分配网络之间的特性阻抗水平。 反射回任何一个功率分配器网络的任何信号都被隔离电阻吸收。 在使用激光或磨损系统的器件制造之后,可以修剪短截线长度。
    • 8. 发明授权
    • High power pin diode switch
    • 大功率二极管开关
    • US06552626B2
    • 2003-04-22
    • US09482175
    • 2000-01-12
    • Thomas M. SharpeDonald A. CharltonRichard W. Burns
    • Thomas M. SharpeDonald A. CharltonRichard W. Burns
    • H01P115
    • H01P1/15
    • A high power PIN diode single pole double throw (SPDT) switch for use in radar systems transmitting at over 50 watts of power. These systems require a switch that will provide adequate isolation for the sensitive amplifier circuits in the receiver subsystem of the radar from the high power transmit pulses in the event there is a bias failure such that the PIN diodes are at zero bias. By utilizing one single pole single throw (SPST) switch assembly between the transmitter and the antenna and at least two SPST switch assemblies between the antenna and the receiver, this isolation is achieved.
    • 高功率PIN二极管单极双掷(SPDT)开关,用于雷达系统,传输功率超过50瓦。 这些系统需要一个开关,这将为雷达的接收机子系统中的敏感放大器电路提供足够的隔离,以便在发生偏置故障时使PIN二极管处于零偏置的情况下从高功率发射脉冲。 通过在发射机和天线之间利用一个单极单掷(SPST)开关组件以及在天线和接收器之间的至少两个SPST开关组件,实现了这种隔离。