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Study on Window-Output Cylindrical Cavity Multiple-Device Oscillators/Amplifiers and Their Parallel Running Operation.

窗口输出圆柱腔多器件振荡器/放大器及其并联运行研究。

基本信息

批准号：
60550279
负责人：
FUKUI Kiyoshi
金额：
$ 0.83万
依托单位：
Okayama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1986
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550279/
关键词：
Microwave Power Combining Oscillator Amplifier Mode Analysis Finite Element Method

项目摘要

Power-combining characteristics of window-output cylindrical cavity multiple-device oscillators/amplifiers are investigated to give the following results. (1) A mode analysis of the oscillators based on circuit models shows that both <TM_(ono)> - and <TM_(m10)> - modes can be power-combining modes, and gives the condition for stable power-combining operation in the desired mode. (2) The electromagnetic field in the combiner cavities and the coupling of devices to the cavity field is calculated using finite element method. (3) By the experiments using Gunn diodes, it is shown that almost perfect power combining in <TM_(210)> mode can be achieved as in <TM_(020)> mode and the power combining efficiency decreases gradually with increasing n and m. Power combining in the <TM_(810)> mode gives higher efficiency then in the <TM_(040)> mode. These experimental results agree qualitatively with the evaluation based on the device-field coupling. (4) The experiments of both transmission- and reflection-type power amplifiers with the <TM_(020)> -mode multiple-device cavity show that the power-combining efficiency and the frequencyresponse are better in the latter than in the former. (5) The parallel running of two <TM_(020)> -mode oscillators shows the capability of almost perfect power combining. In the case when one or two devices fall into breakdown in one of the oscillators, the output power of the oscillator can be recovered partially in the parallel running.

研究了窗口输出圆柱腔多器件振荡器/放大器的功率组合特性，得出以下结果。 (1)基于电路模型对振荡器的模式分析表明，<TM_(ono)>和<TM_(m10)>模式都可以是功率合成模式，并给出了功率合成在所需模式下稳定工作的条件。 (2)采用有限元方法计算合路腔内的电磁场以及器件与腔场的耦合。 (3)通过使用耿氏二极管的实验表明，<TM_(210)>模式与<TM_(020)>模式一样可以实现几乎完美的功率合成，并且功率合成效率随着n和m的增加而逐渐降低。 <TM_(810)> 模式中的功率组合比 <TM_(040)> 模式中的功率组合具有更高的效率。这些实验结果与基于器件场耦合的评估定性一致。 (4)对<TM_(020)>模多器件腔传输型和反射型功率放大器的实验表明,后者的功率合成效率和频率响应均优于前者。 (5) 两个<TM_(020)>模式振荡器的并行运行显示出近乎完美的功率合成能力。当其中一个振荡器中的一个或两个器件发生故障时，并联运行时可以部分恢复该振荡器的输出功率。