1967年美国无线电公司研制人员发现一种无法解释的现象;事后,利用器件中这种奇异现象在超高频波段得到很大的脉冲功率。这种现象在某些硅器件,例如雪崩二极管中出现。假设二极管在某一射频频率下振荡,电子电路中的雪崩二极管要在更低的频率下振荡。当二极管加电脉冲时,器件突然以“不规则模式”工作,并开始产生微波振荡,其功率和效率比往常要高得多。这种现象至今尚未完全弄清。五个器件组合在一个管壳里,以“不规则模式”工作,其微波脉冲峰值功率已达1200瓦以上,效率大于25％。这样大的功率已往 In 1967, Radiocommunication Corporation researchers found an unexplained phenomenon; afterwards, using this strange phenomenon in the device, a great pulse power was obtained in the UHF band. This phenomenon occurs in some silicon devices, such as avalanche diodes. Assuming that the diode oscillates at a certain RF frequency, the avalanche diode in the electronic circuit will oscillate at a lower frequency. When the diode energizes the pulse, the device suddenly operates in “irregular mode” and begins to oscillate at a much higher power and efficiency than usual. This phenomenon has not yet been fully understood. The five devices are housed in a single package and work in “irregular mode” with peak microwave power of 1200 watts and efficiency greater than 25%. Such a big power has been