| Summary: | 碩士 === 國立中興大學 === 電機工程學系所 === 101 === This thesis presents front-end circuits design for 24GHz radio-frequency receiver. It is composed of five chapters. At first, a brief introduction of wireless radio- frequency system and the applications of 24GHz frequency band in industry are introduced. Then, we discuss the basic theories of the low noise amplifier (LNA) and the measured results of an implemented LNA chip. Following the LNA, the basic theories of the mixer and the implemented mixer chip are introduced. In the process of our study, we are not successful all the way. Therefore, we discuss the possible reasons of two failed ICs: the first on is a low noise amplifier for 24GHz applications, while the second one is front-end circuits design for 24GHz radio-frequency receiver, which includes a low noise amplifier, an active balun, and the mixer. Finally, a general review is drawn.
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