| Summary: | 碩士 === 明新科技大學 === 電子工程研究所 === 96 === Four standards are used for Digital Broadcast Systems in the world: American rule IBOC, Europe rule EUREKA-147, Sundial ISDB, France rule DRM. In the U.S.A Digital Broadcasts, the system of Hybrid IBOC AM/FM is used. This system conveys the digital and analog signals simultaneously on frequency spectrum of original AM/FM broadcast system. Some digital signals exists in AM/FM band, there is some interfering in the system of Hybrid IBOC AM/FM in the band. So, we solve this problem in the receiver of HD Radio (Hybrid Digital Broadcast) and it does not destroy the analog signal also.
In this thesis, we introduce HD Radio receiver mainly. The input to the Hybrid AM/FM signal, after mixer it produce equally good signal quality for single output and dual output with HD Radio receiver. Such a design can reduce 8~12% design cost. We propose a simple and efficient design procedure from the test method and verification result.
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