JP3957314B2 - Fm送信機 - Google Patents
Fm送信機 Download PDFInfo
- Publication number
- JP3957314B2 JP3957314B2 JP2005351229A JP2005351229A JP3957314B2 JP 3957314 B2 JP3957314 B2 JP 3957314B2 JP 2005351229 A JP2005351229 A JP 2005351229A JP 2005351229 A JP2005351229 A JP 2005351229A JP 3957314 B2 JP3957314 B2 JP 3957314B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- circuit
- oscillation
- signal
- khz
- 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.)
- Expired - Fee Related
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Description
関係で適宜設定されるものだあり、1/2に限るものではない。
60 オーディオ部
70 ステレオ変調部
80 PLL周波数シンセサイザ
80−1 基準周波数発振部
80−2 位相比較部
90 発振変調回路
100 FM送信機用半導体集積回路装置
Claims (1)
- 水晶振動子と、
該水晶振動子に結合され、固定の基本振動周波数を出力する基本振動周波数発振回路と、
リアクトルと、
該リアクトルに結合され、発振周波数が制御されるFM放送波発振回路と、
該FM放送波発振回路の発振周波数を可変分周するプログラムカウンタ、基本振動周波数を分周する基準周波数分周回路、前記プログラムカウンタの出力と前記基準周波数分周回路の出力とを比較して前記FM放送波発振回路の発振制御用の信号を出力する位相比較回路からなるPLL周波数シンセサイザと、
左右2系統の音声信号を前記基本振動周波数から生成されるクロックを用いてステレオ変調し、前記FM放送波発振回路の発振制御用の信号を出力するステレオ変調回路と、を備え、
前記基本振動周波数は、1.9MHz、3.8MHzまたは7.6MHzの整数倍であり、基準周波数分周回路は基本振動周波数を固定分周比で分周することで出力周波数を100kHz又は50kHzとすることを特徴とするFM送信機。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005351229A JP3957314B2 (ja) | 2005-12-05 | 2005-12-05 | Fm送信機 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005351229A JP3957314B2 (ja) | 2005-12-05 | 2005-12-05 | Fm送信機 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11028870A Division JP2000228635A (ja) | 1999-02-05 | 1999-02-05 | Fm送信機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006115542A JP2006115542A (ja) | 2006-04-27 |
JP3957314B2 true JP3957314B2 (ja) | 2007-08-15 |
Family
ID=36383567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005351229A Expired - Fee Related JP3957314B2 (ja) | 2005-12-05 | 2005-12-05 | Fm送信機 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3957314B2 (ja) |
-
2005
- 2005-12-05 JP JP2005351229A patent/JP3957314B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2006115542A (ja) | 2006-04-27 |
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