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14
Microwave Transistors
14.1 Introduction
This chapter deals with microwave transistors used to generate and amplify
microwave signals. These include bipolar junction transistors (BJTs), hetero-
junction bipolar transistors (HBTs), junction eld effect transistors (JFETs),
metal semiconductor eld effect transistors (MESFETs), high electron mobil-
ity transistors (HEMTs) and metal-oxide-semiconductor eld effect transis-
tors (MOSFETs), including CMOS.
14.2 Transistors and Vacuum Tubes
Vacuum tubes remained the key players for long in the eld of electronics
and are still used in some applications. These have higher operating voltage,
higher ...