Ku波段30W脉冲微波功率放大器模块

报道了Ku波段30W脉冲微波功率放大器模块的研制.模块的微波放大链路由5级固态功率器件级联构成,采用新颖的双层腔体结构,消除了低频电路与高频电路的互扰.针对Ku波段内匹配MESFET设计了双段式偏置电路,有效抑制了低频振荡.在脉冲重复频率3kHz,占空比10%下,模块在13.5～14.0GHz工作频段内的功率增益Gp≥44dB,输出脉冲峰值功率Ppk≥30W,总效率η≥13%(A类放大状态).

A Ku Band 30W Pulsed Microwave Power Amplifier Module

This paper reports the design and performance of a pulsed microwave power amplifier module that uses microstrip lines and five-stage solid-state devices.A novel two-layer chamber structure is designed for the cancellation of crosstalk between low-frequency circuits and high-frequency circuits.A two-section bias circuit for the GaAs internally matched MESFETs is presented,with which the low-frequency oscillations can be suppressed effectively.When operating over 13.5~14.0GHz at a duty cycle of 10% with 3kHz pulse repetition frequency,the power amplifier module shows a power gain of Gp≥44dB,an output pulsed peak power of Ppk≥30W,and a total efficiency of η≥13% (class A power amplification).