JPS59108353U - FM receiver - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

図は本考案によるＦＭ受信機の一実施例を示すブロック
図である。 ３・・・・・・中間周波段、４・・・・・・レシオ検波
回路、５・・・・・・クオドラチャ検波回路、６・・・
・・・切換回路、１２・・・・・・レベル検出回路。The figure is a block diagram showing an embodiment of an FM receiver according to the present invention. 3...Intermediate frequency stage, 4...Ratio detection circuit, 5...Quadrature detection circuit, 6...
...Switching circuit, 12...Level detection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] レシオ検波回路と、クオドラチャ検波回路と、該レシオ
検波回路と該クオドラチャ検波回路との夫々の出力信号
が供給される切換回路と、中間周波ＦＭ信号のレベルを
検出するレベル検出回路とを設け、前記レシオ検波回路
および前記クオドラチャ検波回路は夫々前記中間周波Ｆ
Ｍ信号を検波し、前記レベル検出回路は前記切榛回路の
切換動作を制御するための制御信号を発生することによ
り、前記中間周波ＦＭ信号のレベルに応じて前記レシオ
検波回路と前記クオドラチャ検波回路との夫々の出力信
号を選択的に切換えることができるように構成したこと
を特徴とするＦＭ受信機。A ratio detection circuit, a quadrature detection circuit, a switching circuit to which respective output signals of the ratio detection circuit and the quadrature detection circuit are supplied, and a level detection circuit for detecting the level of the intermediate frequency FM signal, The ratio detection circuit and the quadrature detection circuit each have the intermediate frequency F.
M signal, and the level detection circuit generates a control signal for controlling the switching operation of the switching circuit, thereby controlling the ratio detection circuit and the quadrature detection circuit according to the level of the intermediate frequency FM signal. An FM receiver characterized in that it is configured to be able to selectively switch the respective output signals of the FM receiver.