JPS59104641U - FM tuner - Google Patents
FM tunerInfo
- Publication number
- JPS59104641U JPS59104641U JP20153182U JP20153182U JPS59104641U JP S59104641 U JPS59104641 U JP S59104641U JP 20153182 U JP20153182 U JP 20153182U JP 20153182 U JP20153182 U JP 20153182U JP S59104641 U JPS59104641 U JP S59104641U
- Authority
- JP
- Japan
- Prior art keywords
- section
- detection section
- detection
- end section
- tuner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Noise Elimination (AREA)
- Stereo-Broadcasting Methods (AREA)
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
第1図は従来のFMチューナにおけるS/N改善を示す
回路図、第2図はこの考案によるFMチューナの一実施
例を示す回路図、第3図a、 bは第2図に示すFM
検波部の特性図である。
1.11・・・フロントエンド部、6. 12・・・中
間周波増幅部、7.13・・・FM検波部、8・・・マ
ルチプレックス復調部、9. 9’・・・ディエンファ
シス回路、10・・・出力端、14・・・ダミーアンテ
ナ。
化カ
出力
!(z)Fig. 1 is a circuit diagram showing S/N improvement in a conventional FM tuner, Fig. 2 is a circuit diagram showing an embodiment of the FM tuner according to this invention, and Figs. 3a and b are FM tuners shown in Fig. 2.
It is a characteristic diagram of a detection part. 1.11...Front end section, 6. 12... Intermediate frequency amplification section, 7.13... FM detection section, 8... Multiplex demodulation section, 9. 9'... De-emphasis circuit, 10... Output end, 14... Dummy antenna. Power output! (z)
Claims (1)
ド部と、このフロントエンド部の出力を検波t−る第1
のFM検波部と、ダミーアンテナの信号を入力とする第
2のフロントエンド部と、この第1のフロントエンド部
の出力を検波すると共に、前記第1のFM検波部の8字
特性に対して逆極性の8字特性を有する第2のFM検波
部と、この第2のFM検波部と前記第1のFM検波部の
出力の合成信号を入力とするマルチプレックス復調部と
を備えたFMチューナ。a front end section that converts the FM modulation signal into an audio signal; and a first section that detects the output of this front end section.
FM detection section, a second front end section inputting the dummy antenna signal, detecting the output of this first front end section, and detecting the figure 8 characteristic of the first FM detection section. An FM tuner comprising a second FM detection section having a figure-8 characteristic of opposite polarity, and a multiplex demodulation section that receives as input a composite signal of the outputs of the second FM detection section and the first FM detection section. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20153182U JPS59104641U (en) | 1982-12-28 | 1982-12-28 | FM tuner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20153182U JPS59104641U (en) | 1982-12-28 | 1982-12-28 | FM tuner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59104641U true JPS59104641U (en) | 1984-07-14 |
Family
ID=30427025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20153182U Pending JPS59104641U (en) | 1982-12-28 | 1982-12-28 | FM tuner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59104641U (en) |
-
1982
- 1982-12-28 JP JP20153182U patent/JPS59104641U/en active Pending
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