Abstract
This chapter offers a detailed discussion on microwave amplitude modulation (AM) detectors and microwave frequency modulation (FM) detectors. The principle of AM detectors is rectification. With the rectifier and accompanying filters, AM detectors recover the envelope of AM microwaves. Therefore, AM detectors are often called envelope detectors. The basic objective of the AM detector is to recover the modulating signals from modulated microwaves. This recovering process is also termed as demodulation. The chapter also presents the types of AM microwave detectors, microwave FM detectors, and microwave phase modulation (PM) detectors. Generally the circuit configurations of PM detectors or phase shift keying (PSK) detectors are identical to those of FM detectors or frequency shift keying (FSK) detectors. Further, the chapter considers a comprehensive discussion on microwave mixers. Microwave mixers are microwave devices that convert microwave frequencies to intermediate frequencies (IF). The chapter also offers a brief idea on microwave harmonic generators. Some other topics, such as phase and amplitude modulation noise in microwave detectors and packaging configurations of microwave detectors are also explored in the chapter.
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