JPH028236U - - Google Patents
Info
- Publication number
- JPH028236U JPH028236U JP1988086996U JP8699688U JPH028236U JP H028236 U JPH028236 U JP H028236U JP 1988086996 U JP1988086996 U JP 1988086996U JP 8699688 U JP8699688 U JP 8699688U JP H028236 U JPH028236 U JP H028236U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- amplifier circuit
- transmission
- control
- output
- 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 7
- 238000001514 detection method Methods 0.000 claims 3
- 230000010354 integration Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Transceivers (AREA)
- Transmitters (AREA)
Description
第１図はこの考案の一実施例に係る自動車電話
装置の送信回路における高周波電力増幅回路に送
信出力制御回路を付加した装置の構成を示す図、
第２図はその従来例を示す図である。
１１……高周波電力増幅回路、１２……出力端
子、１３……方向性結合器、１４……ダイオード
検波器、１５……アナログスイツチ、１６……積
分回路、１７……差動増幅器、１８……制御回路
、１９……ＰＲＯＭ、２０……トランジスタ。
FIG. 1 is a diagram showing the configuration of a device in which a transmission output control circuit is added to a high frequency power amplifier circuit in a transmission circuit of a car telephone device according to an embodiment of the invention;
FIG. 2 is a diagram showing a conventional example thereof. 11... High frequency power amplifier circuit, 12... Output terminal, 13... Directional coupler, 14... Diode detector, 15... Analog switch, 16... Integrating circuit, 17... Differential amplifier, 18... ...Control circuit, 19...PROM, 20...Transistor.
Claims (1)
出力検出回路により検出し、差動増幅回路により
この検出信号と所定の基準電圧との比較を行い、
この比較結果に基づき前記送信信号の送信電力が
所定の値となるように前記高周波電力増幅回路の
帰還制御を行う送信出力制御回路において、前記
出力検出回路と前記差動増幅回路との間に介挿さ
れたアナログスイツチと、このアナログスイツチ
と前記差動増幅回路との間に介挿された積分回路
と、前記アナログスイツチのスイツチング制御を
行う制御回路と、この制御回路によるスイツチン
グ制御のためのデータが記憶された記憶回路とを
具備することを特徴とする送信出力制御回路。 A transmission signal output from a high frequency power amplifier circuit is detected by an output detection circuit, and a differential amplifier circuit compares this detection signal with a predetermined reference voltage.
In a transmission output control circuit that performs feedback control of the high frequency power amplifier circuit so that the transmission power of the transmission signal becomes a predetermined value based on the comparison result, an intervening device is provided between the output detection circuit and the differential amplifier circuit. an integrated analog switch inserted, an integration circuit inserted between the analog switch and the differential amplifier circuit, a control circuit that performs switching control of the analog switch, and data for switching control by this control circuit. 1. A transmission output control circuit comprising: a storage circuit in which is stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988086996U JPH028236U (en) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988086996U JPH028236U (en) | 1988-06-30 | 1988-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH028236U true JPH028236U (en) | 1990-01-19 |
Family
ID=31311633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988086996U Pending JPH028236U (en) | 1988-06-30 | 1988-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH028236U (en) |
-
1988
- 1988-06-30 JP JP1988086996U patent/JPH028236U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0526810Y2 (en) | ||
| JPH0223112U (en) | ||
| JPS6055128U (en) | analog switch circuit | |
| JPH0246419U (en) | ||
| JPS58144968U (en) | Video signal amplification circuit with mute function | |
| JPH0415310U (en) | ||
| JPH0415076U (en) | ||
| JPS628715U (en) | ||
| JPS62158916U (en) | ||
| JPS619908U (en) | Muting circuit | |
| JPS63113328U (en) | ||
| JPS61614U (en) | Output voltage limit circuit | |
| JPS63147032U (en) | ||
| JPS62103313U (en) | ||
| JPH01178634U (en) | ||
| JPS62196415U (en) | ||
| JPH0370619U (en) | ||
| JPH0480120U (en) | ||
| JPS5986720U (en) | ALC circuit | |
| JPS60167415U (en) | feedback amplifier circuit | |
| JPS6358761U (en) | ||
| JPH0415315U (en) | ||
| JPS6413819U (en) | ||
| JPH0438583U (en) | ||
| JPH039523U (en) |