微波倍频器的设计与研制

Design and Fabrication of Microwave Frequency Multiplier

针对微波倍频器的实现途径,介绍了阶跃管倍频和三极管倍频的原理,其中三端非线性电阻微波倍频器可实现有增益倍频,且倍频效率高,稳定性好,在现代通信系统中有着广泛的应用前景。应用ADS软件对倍频电路进行优化仿真,利用集总参数电容和电感对阻抗进行匹配,设计利用晶体三极管通过两次4倍频实现了L波段16倍频,最终成功研制出性能优良的L波段16倍频器,输出功率10.67 dBm,杂波抑制>75 dB,谐波抑制>60 dB,电流仅为120 mA,频谱纯净度较好,温度稳定性较高,能够有效实现倍频功能,满足微波频率源系统的使用要求。

For the realization method of microwave frequency multiplier, the principle and design of step recovery diode frequency multiplier and bipolar transistor frequency multiplier were discussed. Tri-port non-line resistant frequency multipliers have high efficiency and stability, and they are widely used in modern communication systems. A better microwave frequency 16 multiplier of L-band was developed by twice 4 multiple. Its circuit was optimized and simulated by ADS and the impedance is matched by capacitance and inductance. The output power of 16 multiplier is 10.67 dBm, spurious is 〉 75 dB, harmonics is 〉 60 dB, electric current is 110 mA. It can realize multiplying and satisfy the system of microwave frequency source, because of its pure spectrum and high temperature stability.