JP2847963B2 - Transmission power control device - Google Patents
Transmission power control deviceInfo
- Publication number
- JP2847963B2 JP2847963B2 JP33133090A JP33133090A JP2847963B2 JP 2847963 B2 JP2847963 B2 JP 2847963B2 JP 33133090 A JP33133090 A JP 33133090A JP 33133090 A JP33133090 A JP 33133090A JP 2847963 B2 JP2847963 B2 JP 2847963B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission power
- control device
- power control
- vibration sensor
- attenuation
- 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
Links
Description
【発明の詳細な説明】 技術分野 本発明は送信電力制御装置に関し、特に送信電力の降
雨減衰を補償するようにした送信電力制御装置に関する
ものである。Description: TECHNICAL FIELD The present invention relates to a transmission power control device, and more particularly to a transmission power control device configured to compensate rain attenuation of transmission power.
従来技術 かかる送信電力制御装置の機能ブロックが第２図に示
されている。変調器１の変調信号は周波数変換器２にお
いて、局部発信信号と周波数混合されて送信周波数まで
周波数変換される。FIG. 2 shows a functional block of such a transmission power control device. In the frequency converter 2, the modulated signal of the modulator 1 is frequency-mixed with the local transmission signal and frequency-converted to the transmission frequency.
この周波数変換された信号はピンダイオード等を使用
した可変減衰器３によりレベル制御を受け、大電力増幅
器４により地球局送信電力に必要な電力まで増幅されて
出力される。This frequency-converted signal is subjected to level control by a variable attenuator 3 using a pin diode or the like, and is amplified by a large power amplifier 4 to the power required for earth station transmission power and output.
この場合、衛星からのビーコン信号をビーコン信号受
信器５により受信してこれを検波器６にて検波する。こ
の検波電圧を可変減衰器３の制御電圧として供給し、降
雨によりビーコン信号が減衰して検波電圧が低下したと
き地球局の送信電力を増加するよう可変減衰器３の出力
レベルを制御している。こうして降雨減衰による補償を
行っているのである。In this case, the beacon signal from the satellite is received by the beacon signal receiver 5 and detected by the detector 6. This detection voltage is supplied as a control voltage for the variable attenuator 3, and the output level of the variable attenuator 3 is controlled so as to increase the transmission power of the earth station when the beacon signal is attenuated due to rainfall and the detection voltage decreases. . In this way, compensation is provided by rain attenuation.
このような従来の方式では、送信電力の制御を行うべ
くビーコン信号を受信する必要があり、よってそのため
の受信器５及び検波器６を設けなければならず、装置が
大型化して高価となり、車載局や可般局等には適しない
という欠点がある。In such a conventional system, it is necessary to receive a beacon signal in order to control transmission power, and therefore, it is necessary to provide a receiver 5 and a detector 6 for that purpose. There is a disadvantage that it is not suitable for stations and general stations.
発明の目的 本発明の目的は、小型化及び低価格化を図った送信電
力制御装置を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a transmission power control device that is reduced in size and price.
発明の構成 本発明による送信電力制御装置は、屋外に配置され圧
電体を使用した振動センサと、このセンサ出力により送
信電力の減衰制御をなす制御手段とを含むことを特徴と
する。Configuration of the Invention A transmission power control device according to the present invention is characterized by including a vibration sensor that is disposed outdoors and uses a piezoelectric body, and a control unit that performs transmission power attenuation control using the sensor output.
実施例 以下、図面を用いて本発明の実施例を説明する。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
第１図は本発明の実施例のブロック図であり、第２図
と同等部分は同一符号により示している。屋外の雨にさ
らされる位置に、圧電体を使用した振動センサ７を接地
しておく。このセンサの出力に応じてピンダイオード等
の可変減衰器３の減衰量を制御して送信出力レベルを制
御する構成である。FIG. 1 is a block diagram of an embodiment of the present invention, and the same parts as those in FIG. 2 are denoted by the same reference numerals. A vibration sensor 7 using a piezoelectric body is grounded at a position exposed to rain outdoors. The transmission output level is controlled by controlling the amount of attenuation of the variable attenuator 3 such as a pin diode according to the output of this sensor.
こうすることにより、振動センサ７が降雨状態を検出
してその状態に応じてセンサ出力電圧が生成されるか
ら、このセンサ出力電圧を減衰制御電圧として使用すれ
ば、降雨減衰補償が行えるのである。By doing so, the vibration sensor 7 detects a rainfall state and a sensor output voltage is generated in accordance with the state. If this sensor output voltage is used as the attenuation control voltage, rainfall attenuation compensation can be performed.
発明の効果 以上のように、本発明によれば、振動センサを使用す
るのみで簡単に降雨減衰補償が可能であり、小型化低価
格化の送信電力制御装置が得られるという効果がある。Effects of the Invention As described above, according to the present invention, it is possible to easily perform rainfall attenuation compensation simply by using a vibration sensor, and to obtain a transmission power control device that is small in size and low in cost.
第１図は本発明の実施例のブロック図、第２図は従来の
送信電力制御装置のブロック図である。 主要部分の符号の説明 ３……可変減衰器 ７……振動センサFIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional transmission power control device. Explanation of Signs of Main Parts 3 ... Variable Attenuator 7 ... Vibration Sensor
Claims (1)
サと、このセンサ出力により送信電力の減衰制御をなす
制御手段とを含むことを特徴とする送信電力制御装置。1. A transmission power control apparatus comprising: a vibration sensor that is disposed outdoors and uses a piezoelectric body; and a control unit that performs transmission power attenuation control based on the output of the vibration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33133090A JP2847963B2 (en) | 1990-11-29 | 1990-11-29 | Transmission power control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33133090A JP2847963B2 (en) | 1990-11-29 | 1990-11-29 | Transmission power control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04199917A JPH04199917A (en) | 1992-07-21 |
| JP2847963B2 true JP2847963B2 (en) | 1999-01-20 |
Family
ID=18242479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33133090A Expired - Fee Related JP2847963B2 (en) | 1990-11-29 | 1990-11-29 | Transmission power control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2847963B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008227797A (en) * | 2007-03-12 | 2008-09-25 | Fujitsu Ltd | Data communication program, recording medium recording its program, communication terminal and method for communicating data |
-
1990
- 1990-11-29 JP JP33133090A patent/JP2847963B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04199917A (en) | 1992-07-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |