JPH042135U - - Google Patents
Info
- Publication number
- JPH042135U JPH042135U JP4061390U JP4061390U JPH042135U JP H042135 U JPH042135 U JP H042135U JP 4061390 U JP4061390 U JP 4061390U JP 4061390 U JP4061390 U JP 4061390U JP H042135 U JPH042135 U JP H042135U
- Authority
- JP
- Japan
- Prior art keywords
- gain
- reference voltage
- gain control
- signal
- amplifier
- 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
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Transmitters (AREA)
Description
第１図は本考案の実施例に係る送信機の電力増
幅部における自動出力制御回路を示す図、第２図
は第１図における基準電圧設定回路の一例を示す
図、第３図はＣＭカツプラの周波数特性を示す図
、第４図は第３図のＣＭカツプラによる送信電力
への影響を示す図、第５図は本実施例に係る基準
電圧設定回路の出力電圧を示す図、第６図は本実
施例に係るＣＭカツプラの特性を示す図、第７図
は本実施例に係るＣＭカツプラの送信電力への影
響を示す図、第８図は従来の無線送信機を示す図
である。
図において、１……ゲイン制御増幅器、２……
電力増幅器、３……ＣＭカツプラ、４……整流回
路、５……コンパレータ、６……基準電圧設定回
路、７……低域フイルタ、１４……電力増幅部、
１５……アンテナ。
FIG. 1 is a diagram showing an automatic output control circuit in the power amplifier section of a transmitter according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the reference voltage setting circuit in FIG. 1, and FIG. 3 is a CM coupler. FIG. 4 is a diagram showing the influence of the CM coupler in FIG. 3 on the transmission power, FIG. 5 is a diagram showing the output voltage of the reference voltage setting circuit according to this embodiment, and FIG. 7 is a diagram showing the characteristics of the CM coupler according to this embodiment, FIG. 7 is a diagram showing the influence of the CM coupler on transmission power according to this embodiment, and FIG. 8 is a diagram showing a conventional wireless transmitter. In the figure, 1...gain control amplifier, 2...
Power amplifier, 3... CM coupler, 4... Rectifier circuit, 5... Comparator, 6... Reference voltage setting circuit, 7... Low pass filter, 14... Power amplifier section,
15...Antenna.
Claims (1)
するゲイン制御増幅器１と、該ゲイン制御増幅器
１に接続される電力増幅器２と、該電力増幅器２
の送信出力を検出するＣＭカツプラ３と、該ＣＭ
カツプラ３の信号を整流・平均化する整流回路４
と、該整流回路４の信号および基準電圧Ｖｒを比
較し、前記ゲイン制御増幅器１のゲインを制御す
るコンパレータ５を有する送信機の自動出力制御
回路において、 前記所要の送信周波数ｆに対応して前記基準電
圧Ｖｒを可変にする基準電圧設定回路６を備える
ことを特徴とする自動出力制御回路。[Claims for Utility Model Registration] A gain control amplifier 1 that controls the gain of a signal V i of a required transmission frequency f, a power amplifier 2 connected to the gain control amplifier 1, and a power amplifier 2 connected to the gain control amplifier 1.
a CM coupler 3 that detects the transmission output of the CM;
Rectifier circuit 4 that rectifies and averages the signal of Kupura 3
In an automatic output control circuit of a transmitter having a comparator 5 that compares the signal of the rectifier circuit 4 and the reference voltage Vr and controls the gain of the gain control amplifier 1, An automatic output control circuit comprising a reference voltage setting circuit 6 that makes the reference voltage V r variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4061390U JPH042135U (en) | 1990-04-18 | 1990-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4061390U JPH042135U (en) | 1990-04-18 | 1990-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH042135U true JPH042135U (en) | 1992-01-09 |
Family
ID=31550550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4061390U Pending JPH042135U (en) | 1990-04-18 | 1990-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0717684U (en) * | 1993-09-01 | 1995-03-31 | ダイハツ工業株式会社 | Rack guide for rack and pinion type steering |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01293016A (en) * | 1988-05-20 | 1989-11-27 | Nec Corp | Circuit for controlling output of transmitter |
-
1990
- 1990-04-18 JP JP4061390U patent/JPH042135U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01293016A (en) * | 1988-05-20 | 1989-11-27 | Nec Corp | Circuit for controlling output of transmitter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0717684U (en) * | 1993-09-01 | 1995-03-31 | ダイハツ工業株式会社 | Rack guide for rack and pinion type steering |