功放自激分析微带功率放大器振荡分析 微带功率放大器振荡分析 彭高森 华东电子工程研究所 [摘要]微波功率双极晶体管是固态发射机中使用最多的核心器件，由它组成的微带功 率放大器在实际工作中常出现寄生振荡现象， 影响放大器正常工作， 甚至造成微波功率晶体 管的永久性损坏。 本文对产生寄生振荡的原因作了较系统的阐述， 并提出了一些相应的消除 寄生振荡的措施，从而使放大器更稳定可靠地工作。 [关键词]寄生振荡 微带功率放大器 参量振荡 负阻振荡 The Analysis of Microstrip Power Amplifier Oscillation [Abstract] Microwave power bipolar transistor is a core device of the solid-state transmitter which is used most frequently. The microstrip power amplifier consisting of it occurs parasitic oscillation frequently which influences the operation of the amplifier, sometime makes permanent damage on the microwave power transistor. The paper defines quite comprehensively the reasons generating parasitic oscillation, and proposes some measures to cancel parasitic oscillation to make the amplifier operate more reliably. [Key wo……