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公开(公告)号:US07129783B2
公开(公告)日:2006-10-31
申请号:US10973361
申请日:2004-10-25
IPC分类号: H03F3/60
CPC分类号: H03F1/523 , H03F3/191 , H03F3/604 , H03F2200/192 , H03F2200/198 , H03F2200/204 , H03F2200/294 , H03F2200/372
摘要: The hybrid active combiner and circulators serves as a coupler and is a three port network that integrates a directional coupler topology with active devices placed in the coupling paths in order to synthesize a low-loss active combiner circuit or a circulator device with minimal insertion losses. The coupler can have multiple stage amplifiers with transconductance values set according the Pascal's triangle for improved performance, and can function as a low cost and low weight transceiver well suited for various communications systems.
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公开(公告)号:US07256649B2
公开(公告)日:2007-08-14
申请号:US11057979
申请日:2005-02-15
CPC分类号: H03F1/3223 , H03F1/26 , H03F3/602 , H03F2200/204 , H03F2200/372
摘要: An intermodulation product reduction or cancellation amplifier received two input signals that are split in quadrature wherein the inphase outputs are summed and then amplified as an inphase signal, and the quadrature outputs are fixed-phase phase-shifted, then summed and then amplified as a quadrature signal. The inphase and quadrature signals are fed into an output hybrid for canceling intermodulation products, where the fixed-phase phase shift is +/−60° for reducing 3rd order, +/−36° for reducing 5th order, and +/−25.71° for reducing 7th order intermodulation products, for examples, for improved signal communications of the two signals over a common antenna or link.
摘要翻译: 互调产品减少或消除放大器接收到两个正交分割的输入信号,其中同相输出被相加,然后被放大为同相信号,正交输出是固定相位相移,然后求和然后被放大为正交 信号。 同相和正交信号被馈送到输出混合中以消除互调产物,其中固定相位相移为+/- 60°以减少3阶,+/- 36°以减小5阶和+/- 25.71° 例如,为了减少第七阶互调产物,用于通过公共天线或链路改善两个信号的信号通信。
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3.
公开(公告)号:US07420508B2
公开(公告)日:2008-09-02
申请号:US11354551
申请日:2006-02-14
IPC分类号: H01Q3/00
CPC分类号: H01Q3/26
摘要: A method for reducing intermodulation beams includes applying a beam-smearing phase distribution in addition to a beam-steering distribution for scanning to an array of antenna elements such that multiple higher-order intermodulation products are simultaneously reduced.
摘要翻译: 一种用于减少互调波束的方法包括除了用于扫描到天线元件阵列的波束调节分布之外还应用波束扫描相位分布,使得多个高阶互调产物同时减少。
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