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    • 2. 发明申请
    • MONOLITHIC SILICON-BASED PHASED ARRAYS FOR COMMUNICATIONS AND RADARS
    • 用于通信和雷达的基于硅的硅基阵列
    • WO2005050776A2
    • 2005-06-02
    • PCT/US2004/037802
    • 2004-11-12
    • CALIFORNIA INSTITUTE OF TECHNOLOGYHASHEMI, HosseinGUAN, XiangHAJIMIRI, Ali
    • HASHEMI, HosseinGUAN, XiangHAJIMIRI, Ali
    • H01Q
    • H01Q3/26H01Q3/22H01Q3/2682H01Q3/42H01Q21/0093
    • A phased-array receiver is adapted so as to be fully integrated and fabricated on a single silicon substrate. The phased-array receiver is operative to receive a 24 GHz signal and may be adapted to include 8-elements formed in a SiGe BiCMOS technology. The phased-array receiver utilizes a heterodyne topology, and the signal combining is performed at an IF of 4.8GHz. The phase-shifting with 4 bits of resolution is realized at the LO port of the first down-conversion mixer. A ring LC VCO generates 16 different phases of the LO. An integrated 19.2GHz frequency synthesizer locks the VCO frequency to a 75MHz external reference. Each signal path achieves a gain of 43dB, a noise figure of 7.4dB, and an IIP3 of -11dBm. The 8-path array achieves an array gain of 61dB, a peak-to-null ratio of 20dB, and improves the signal-to-noise ratio at the output by 9dB.
    • 相控阵接收器适于完全集成并制造在单个硅衬底上。 相控阵接收器可操作以接收24GHz信号,并且可适于包括以SiGe BiCMOS技术形成的8个元件。 相控阵接收机利用外差拓扑,信号组合在4.8GHz的IF下进行。 在第一个下变频混频器的LO端口实现4位分辨率的相移。 振荡LC VCO产生LO的16个不同相位。 集成的19.2GHz频率合成器将VCO频率锁定到75MHz外部参考。 每个信号路径的增益为43dB,噪声系数为7.4dB,IIP3为-11dBm。 8路阵列实现了61dB的阵列增益,20dB的峰 - 无效比,并将输出端的信噪比提高了9dB。