TY - JOUR AB - The field of microwave semiconductor devices has expanded greatly in recent years, both in the functions that may be performed and the range of devices available for any function. The upper frequency limits of transistor operation have also marched steadily upwards, with millimeter-wave (above 30 GHz) operation being achieved in many laboratories before 1980. The aim of this review is to provide an introduction for those new to microwave semiconductors and an update for those who have not been closely involved for some time. Following the introduction is a section on carrier transport, which is a topic of great importance in the understanding of device operation. The individual families of devices are discussed in the succeeding sections, starting with varistor and varactor diodes in which the variation of resistance or reactance is the important feature. The next section introduces transit-time phenomena and the devices designed to take advantage of them. TI - Microwave semiconductors devices JF - Reports on Progress in Physics DO - 10.1088/0034-4885/48/3/001 DA - 1985-03-01 UR - https://www.deepdyve.com/lp/iop-publishing/microwave-semiconductors-devices-d0ep4E95ws SP - 277 VL - 48 IS - 3 DP - DeepDyve ER -