星载高性能微带倍频器的精确设计

Precise Design of Spaceborne High Performance Microstrip Frequency Multiplier

本文研究使用微带平行耦合线窄带带通滤波器抑制谐波的阶跃恢复二极管微带倍频器的精确设计，就如何提高倍频器的性能进行了探讨，总结了四分之一波长谐振线修正公式以及对应于滤波器中心频率的谐振器长度修正公式，给出一个实际电路的ＣＡＤ数据。测试结果表明：该倍频器距中心频率±５００ｋＨｚ处的杂波抑制大于６５ｄＢ，距中心频率±５００ＭＨｚ处的谐波抑制达到５０ｄＢ。根据本文所述方法设计的倍频器，具有调试方便、体积小、重量轻、可靠性高等优点，已用于最近发射成功的新型中国通信卫星与气象卫星星载测控系统之中。

The precise design of step recovery diode micro strip frequency multiplier (MFM) which uses microstrip parallel coupled line b and pass filter (MPCL BPF) to reject harmonics is studied.The key problems in p ractical design are discussed,the corrected equations for calculating the resona tor lengths both in MFM and MPCL BPF are summarized,the CAD data and test resul ts of a practical circuit are given.With small volume,light weight and high per formances,similar MFMs have been used in the telemeter,the tracking and command equipment of some new communication and meteorological satellites.