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每年冬季,在美国的华盛顿特区召开一次国际电子器件会议(IEDM)。可以说,这个会议是窥测电子器件动态的窗口。从会议论文的构成到论文的内容,人们能够看出西方各国电子器件的发展趋势。例如,在六十年代,这种国际会议上传统微波管的论文占很大比重,说明西方国家传统微波管的发展已进入全盛时期。到了七十年代中、后期,这些微波管的论文明显减少,让位给一些新原理的微波管、固态器件和集成电路。这种情况,反映出传统微波管已臻成熟,厘米波段以下已被复盖殆尽,同时,基于崭新原理的毫米波、亚毫米波真空电子器件的迅速崛起,令人瞠目相视。
Every winter, an International Electronic Devices Conference (IEDM) is held in Washington, DC, USA. It can be said that this meeting is a dynamic window to watch electronic devices. From the composition of the conference essay to the content of the essay, one can see the development trend of the electronic devices in the western countries. For example, in the 1960s, the papers on conventional microwave tubes accounted for a large proportion of such international conferences, indicating that the development of traditional microwave tubes in western countries has entered its heyday. By the mid-to-late 1970s, the number of papers in these microwave tubes was significantly reduced, giving way to some new principles of microwave tubes, solid state devices and integrated circuits. This situation reflects the traditional microwave tube has matured, the centimeter wave band has been covered completely, at the same time, based on the new principle of millimeter wave, sub-millimeter wave vacuum electronics rapid rise, eye-opener.