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TV/FM RECEIVER FOR MULTIMEDIA APPLICATIONS

机译:多媒体应用的TV / FM接收器

摘要

A receiver for receiving both first-type reception signals, for example TV signals, and second-type reception signals, for example FM-radio signals, is described. The receiver may be used in multimedia applications. In the receiver, a reception signal is fed via an input section (RFI-L, RFA-L, BPF-L) to a mixer (MIX-L). To obtain a relatively good performance, the following is proposed. A bandpass filter (BPF-L) in the input section can be tuned through a frequency band, in which reception signals of both the first and the second type are present. The filter characteristics of the bandpass filter (BPF-L) are switched in accordance with the type of reception signal desired. For example, switching provides a passband which is substantially narrower for FM reception than for TV reception.
机译:描述了一种用于接收第一类型的接收信号(例如TV信号)和第二类型的接收信号(例如FM无线电信号)的接收机。接收机可以用于多媒体应用中。在接收器中,接收信号通过输入部分(RFI-L,RFA-L,BPF-L)馈送到混频器(MIX-L)。为了获得相对良好的性能,提出以下建议。输入部分中的带通滤波器(BPF-L)可以通过一个频带进行调谐,在该频带中同时存在第一类和第二类接收信号。带通滤波器(BPF-L)的滤波器特性根据所需的接收信号类型进行切换。例如,切换提供的通带对于FM接收要比电视接收要窄得多。

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