一、概况 1965年以前,几乎所有微波设备都是采用波导、同轴线及带线电路。隧道二极管、混频管,变容管、开关管等固体器件只在接收系统及控制电路中得到应用,只有很少数的功率系统中才用上变容管,大多数功率源仍然采用真空器件。1965年以后,由于微波晶体管、渡越电电二极管、雪崩管等固体器件在用之于微波 First, an overview Until 1965, almost all microwave equipment is the use of waveguide, coaxial and strip circuit. Solid-state devices such as tunnel diodes, mixer tubes, varactor tubes and switch tubes are only used in receiving systems and control circuits. Varactor tubes are used in only a few power systems. Most power sources still use vacuum devices . After 1965, due to the microwave transistor, crossing the diode, avalanche tube and other solid-state devices used in the microwave