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一、引言微波晶体管放大器的历史也是微波晶体管器件的历史。40年代未,第一只晶体管问世,由于它的显著优点,很快成为固体电子器件的一个重要分支。60年代中期,由于平面外延工艺的发展,晶体管工作频率进入微波频段,相应产生了微波晶体管以及相应的放大器。微波晶体管具有体积小、重量轻、噪声性能较好,频带宽、稳定性好等优点,因此现在它已取代或部分取代了隧道二极管放大器,行波管放大器以及参量放大器。就目前我国来看,
I. INTRODUCTION The history of microwave transistor amplifiers is also the history of microwave transistor devices. In the 1940s, the first transistor was introduced and, due to its significant advantages, soon became an important branch of solid state electronics. In the mid-1960s, due to the development of planar epitaxial process, the working frequency of the transistor entered the microwave frequency band, and correspondingly, the microwave transistor and the corresponding amplifier were produced. Microwave transistor with small size, light weight, better noise performance, frequency bandwidth, good stability, etc., so it has replaced or partially replaced the tunnel diode amplifier, traveling wave tube amplifier and parametric amplifier. At present, our country,