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    • 5. 发明授权
    • Integral monitor system for circular phased array antenna
    • 圆形相控阵天线的积分监控系统
    • US4639732A
    • 1987-01-27
    • US704687
    • 1985-02-22
    • Joseph H. AcoraciAlvin W. Moeller
    • Joseph H. AcoraciAlvin W. Moeller
    • H01Q3/24H01Q3/26G01S7/40H04B17/00
    • H01Q3/242H01Q3/267
    • The circular phased array antenna includes a plurality of radiating elements spaced about the circumference of a mounting ring. The radiating elements are fed with r.f. currents having relative phase and amplitude distribution to form a focused beam from the antenna. The beam is steerable to a selected direction. The monitor system includes a probe element mounted near each radiating element, phase shifters and couplers for combining signals from the probes into a transmission line. The amplitude of the transmission line signal is compared with a known value of signal for a normally operating antenna for each beam direction. A failure alarm is generated whenever the difference between the compared signals exceeds tolerance.
    • 圆形相控阵天线包括围绕安装环的圆周间隔开的多个辐射元件。 辐射元件供给r.f. 具有相对相位和幅度分布的电流形成来自天线的聚焦光束。 光束可以选择方向。 监视器系统包括安装在每个辐射元件附近的探针元件,移相器和耦合器,用于将来自探针的信号组合成传输线。 传输线信号的幅度与用于每个波束方向的正常操作天线的已知信号值进行比较。 每当比较的信号之间的差异超过公差时,就产生故障报警。