JPS6082858U - FSK modulator - Google Patents
FSK modulatorInfo
- Publication number
- JPS6082858U JPS6082858U JP17444183U JP17444183U JPS6082858U JP S6082858 U JPS6082858 U JP S6082858U JP 17444183 U JP17444183 U JP 17444183U JP 17444183 U JP17444183 U JP 17444183U JP S6082858 U JPS6082858 U JP S6082858U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- potential point
- emitter
- base
- reference potential
- 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.)
- Granted
Links
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (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図は従来の周波数変調器の回路図、第２図はこの考
案によるＦＳＫ変調器の１実施例の回路図、第３図は第
２図の回路のトランジスタ２６にＨレベルのディジタル
信号が供給されたときの水晶振動子、インダクタンス及
びトランジスタ２６の等価回路、第４図は第２図の回路
のトランジスタ２６にＬレベルのディジタル信号が供給
されたときの水晶振動子１４、インダクタンス２４及び
トランジスタ２６の等価回路である。
２・・・第１トランジスタ、４・・・エミッタ抵抗器、
６．８・・・バイアス用抵抗器、１０・・・発振用コン
デンサ、１２・・・帰還用コンデンサ、１４・・・水晶
振動子、２４・・・インダクタンス、２６・・・第２ト
ランジスタ。FIG. 1 is a circuit diagram of a conventional frequency modulator, FIG. 2 is a circuit diagram of an embodiment of an FSK modulator according to this invention, and FIG. An equivalent circuit of the crystal resonator, inductance, and transistor 26 when supplied, and FIG. 4 shows the equivalent circuit of the crystal resonator 14, inductance 24, and transistor when an L-level digital signal is supplied to the transistor 26 of the circuit of FIG. 26 equivalent circuits. 2... First transistor, 4... Emitter resistor,
6.8... Bias resistor, 10... Oscillation capacitor, 12... Feedback capacitor, 14... Crystal resonator, 24... Inductance, 26... Second transistor.
Claims (1)
レクタ・エミッタ導電路とエミッタ抵抗器とを直列に接
続し、上記動作電位点と上記基準電位点との間に２個の
バイアス用抵抗器を直列に接続し、その相互接続点を第
１トランジスタのベースに接続し、第１トランジスタの
ベース・エミッタ間に発振用コンデンサを接続し、第１
トランジスタのエミッタと上記基準電位点との間に帰還
用コンデンサを接続し、第１トランジスタのベースと上
記基準電位点との間に水晶振動子とインダクタンスと第
２のトランジスタのコレクタ・エミッタ導電路とを接続
し、第２トランジスタのベースにディジタル信号を供給
してなるＦＳＫ変調器。A collector-emitter conductive path of the first transistor and an emitter resistor are connected in series between the operating potential point and the reference potential point, and two bias resistors are connected between the operating potential point and the reference potential point. connect the devices in series, connect their interconnection point to the base of the first transistor, connect an oscillation capacitor between the base and emitter of the first transistor, and
A feedback capacitor is connected between the emitter of the transistor and the reference potential point, and a crystal resonator, an inductance, and a collector-emitter conductive path of the second transistor are connected between the base of the first transistor and the reference potential point. The FSK modulator is configured by connecting the 2nd transistor and supplying a digital signal to the base of the second transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17444183U JPS6082858U (en) | 1983-11-10 | 1983-11-10 | FSK modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17444183U JPS6082858U (en) | 1983-11-10 | 1983-11-10 | FSK modulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6082858U true JPS6082858U (en) | 1985-06-08 |
| JPS6340928Y2 JPS6340928Y2 (en) | 1988-10-26 |
Family
ID=30379761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17444183U Granted JPS6082858U (en) | 1983-11-10 | 1983-11-10 | FSK modulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6082858U (en) |
-
1983
- 1983-11-10 JP JP17444183U patent/JPS6082858U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6340928Y2 (en) | 1988-10-26 |
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