高功率PIN限幅器设计及测试方案
Design and test scheme of high power PIN limiters
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摘要: 介绍了利用PIN二极管进行高功率无源限幅器的设计方法，分析了影响限幅器功率容量、限幅电平、尖峰泄露、响应速度及恢复时间等的因素。利用平面微带电路的形式，提出了无源检波式及主动式PIN限幅器设计,仿真结果表明:该无源检波式限幅器起限电平约为-3 dBm,脉冲功率容量60 dBm,限幅电平15 dBm左右。针对设计的限幅器，提出了用于测试限幅器性能的高功率实验平台。该平台采用双路双频耦合测量，具有很高的大小信号隔离度，能够进行高功率脉冲、连续波测试，在准确测量限幅器的功率容量、限幅电平、响应速度及恢复时间等指标方面具有很高的可靠性。Abstract: A high power passive limiter based on PIN diode is presented. The main factors affecting its performance, such as power capability, limiting levels, peak leaking, response time, and recovery time, are presented. A passive PIN limiter using Schottky detection and an active limiter are realized based on microstrip line. The simulated results indicate that the threshold level and the limiting level of the passive limiter are about -3 dBm and 15 dBm, respectively, and it can withstand peak pulses of about 60 dBm. A high power measurement platform is established to measure the performance of the designed limiters. High isolation between high power signal and small signal is obtained using dual-band dual-path coupling method so that periodic pulsed and continuous wave high power measurement can
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Key words:
- high power /
- pin limiter /
- passive detector limiter /
- active limiter /
- high power measurement platform
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