JP2699710B2 - Transmission output control device - Google Patents
Transmission output control deviceInfo
- Publication number
- JP2699710B2 JP2699710B2 JP3231409A JP23140991A JP2699710B2 JP 2699710 B2 JP2699710 B2 JP 2699710B2 JP 3231409 A JP3231409 A JP 3231409A JP 23140991 A JP23140991 A JP 23140991A JP 2699710 B2 JP2699710 B2 JP 2699710B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- control device
- transmission output
- voltage supply
- positive voltage
- 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
Landscapes
- Transmitters (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、無線送受信機に使用
し、電界効果トランジスタ（以下、ＦＥＴという）を用
いた電力増幅器の送信を制御する送信出力制御装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission output control device used in a radio transceiver for controlling transmission of a power amplifier using a field effect transistor (hereinafter, referred to as FET).
【０００２】[0002]
【従来の技術】図２は従来の送信出力制御装置の構成を
示している。図２において、１は、ゲートに高周波信号
が入力されるとともに、マイナス（−、負）電圧および
プラス（＋、正）電圧が印加されるＦＥＴ電力増幅器、
２は、入力される制御信号によりＦＥＴ電力増幅器１へ
のプラス電圧あるいはマイナス電圧を印加し、あるいは
停止し、ＦＥＴ電力増幅器１からの送信電力の送出ある
いは停止を制御するための電源制御回路である。Ｃ１お
よびＣ２は電解コンデンサである。2. Description of the Related Art FIG. 2 shows a configuration of a conventional transmission output control device. In FIG. 2, reference numeral 1 denotes an FET power amplifier to which a high-frequency signal is input to a gate and a negative (-, negative) voltage and a positive (+, positive) voltage are applied;
Reference numeral 2 denotes a power supply control circuit for applying or stopping a positive voltage or a negative voltage to the FET power amplifier 1 according to an input control signal, and controlling transmission or stop of transmission power from the FET power amplifier 1. . C1 and C2 are electrolytic capacitors.
【０００３】次に、この構成の動作について説明する。
制御信号を送信電源制御回路２に供給すると送信電源制
御回路２が、ＦＥＴ電力増幅器１に印加されるマイナス
電圧およびプラス電圧を遮断し、電力増幅動作が停止す
る。Next, the operation of this configuration will be described.
When the control signal is supplied to the transmission power control circuit 2, the transmission power control circuit 2 cuts off the negative voltage and the positive voltage applied to the FET power amplifier 1, and the power amplification operation stops.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来例
の送信出力制御装置では、送信出力を停止する際、電力
増幅器に接続している電源等から重畳した雑音の除去の
ための大容量の電解コンデンサＣ１およびＣ２に充電さ
れた電荷の放電に時間を要するため、送信電力立ち下が
り時間が長くなる。この場合、無線送受信機では、送信
から受信動作に切り換わる際に、送信出力が受信部に周
り込むという問題があった。However, in the conventional transmission output control device, when the transmission output is stopped, a large-capacity electrolytic capacitor for removing superimposed noise from a power supply or the like connected to the power amplifier. Since it takes time to discharge the electric charges charged in C1 and C2, the fall time of the transmission power becomes long. In this case, the wireless transceiver has a problem that the transmission output goes around the reception unit when switching from the transmission to the reception operation.
【０００５】本発明は、このような従来の課題を解決す
るものであり、送信停止時に送信電力を瞬時に立ち下げ
ることができる優れた送信出力電力制御装置を提供する
ことを目的とするものである。An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide an excellent transmission output power control device capable of instantaneously lowering transmission power when transmission is stopped. is there.
【０００６】[0006]
【課題を解決するための手段】この目的を達成するため
に、本発明の送信出力制御装置は、負電圧および正電圧
が印加される電力増幅器と、入力される制御信号によ
り、負電圧および正電圧を電力増幅器に印加し、あるい
は停止する送信電源制御回路と、負電圧の供給部および
正電圧の供給部と接地間にそれぞれ接続されるコンデン
サと、負電圧の供給部と正電圧の供給部との間を断接す
るように接続され、制御信号による接続状態で負電圧の
供給部に接続されるコンデンサの電荷が正電圧の供給部
側に通流し、同時に正電圧の供給部側のコンデンサの電
荷が負電圧の供給部側に通流して、それぞれのコンデン
サの電荷を放電させるためのスイッチとを備えたもので
ある。In order to achieve this object, a transmission output control apparatus according to the present invention comprises a power amplifier to which a negative voltage and a positive voltage are applied, and a negative and a positive voltage, which are controlled by an input control signal. A transmission power supply control circuit for applying or stopping the voltage to the power amplifier, a capacitor connected between the negative voltage supply and the positive voltage supply and the ground, a negative voltage supply and a positive voltage supply, respectively. The charge of the capacitor connected to the negative voltage supply unit in the connection state by the control signal flows to the positive voltage supply unit side, and at the same time, the capacitor of the positive voltage supply unit side And a switch for discharging the charge of each capacitor by passing the charge to the side of the negative voltage supply unit.
【０００７】[0007]
【作用】したがって、本発明の送信出力制御装置によれ
ば、送信停止時のスイッチの接続状態で負電圧の供給部
に接続されるコンデンサの電荷が正電圧の供給部側に通
流し、同時に正電圧の供給部側のコンデンサの電荷も負
電圧の供給部側に通流して、それぞれのコンデンサの電
荷を瞬時に放電するため、送信停止時に送信電力を瞬時
に立ち下げることができる。Therefore, according to the transmission output control device of the present invention, the electric charge of the capacitor connected to the negative voltage supply unit flows to the positive voltage supply unit side while the switch is connected at the time of transmission stop, and at the same time, the positive voltage is applied. The charge of the capacitor on the side of the voltage supply also flows to the side of the supply of the negative voltage, and the charge of each capacitor is discharged instantaneously. Therefore, the transmission power can be instantaneously dropped when transmission is stopped.
【０００８】[0008]
【実施例】以下、本発明の送信出力制御装置の実施例を
図面にもとづいて説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a transmission output control device according to the present invention.
【０００９】図１は実施例の構成を示している。図１に
おいて、３はゲートに高周波信号が入力されるととも
に、マイナス（−、負）および電圧プラス（＋、正）電
圧が印加されるＦＥＴ電力増幅器であり、４はスイッ
チ、５は制御信号が供給されて、ＦＥＴ電力増幅器３に
プラス電圧あるいはマイナス電圧を印加し、あるいは停
止し、ＦＥＴ電力増幅器３からの送信電力の送出あるい
は停止を制御するための送信電源制御回路である。Ｃ１
０はマイナス電圧の供給線である供給部に接続される雑
音阻止用の電解コンデンサ、Ｃ１２はプラス電圧の供給
部に接続される雑音阻止用の電解コンデンサである。FIG. 1 shows the configuration of the embodiment. In FIG. 1, reference numeral 3 denotes an FET power amplifier to which a high-frequency signal is input to a gate and to which negative (-, negative) and voltage plus (+, positive) voltages are applied, 4 is a switch, and 5 is a control signal. A transmission power supply control circuit for supplying a positive voltage or a negative voltage to the FET power amplifier 3 or stopping the power supply and stopping the transmission or stop of the transmission power from the FET power amplifier 3. C1
0 is an electrolytic capacitor for noise suppression connected to a supply unit which is a negative voltage supply line, and C12 is an electrolytic capacitor for noise suppression connected to a supply unit for positive voltage.
【００１０】次に、この構成の動作について説明する。
制御信号が送信電源制御回路５に供給されて、ＦＥＴ電
力増幅器３からの送信出力を停止させる場合、同時に制
御信号をスイッチ４にも供給する。この制御信号によ
り、スイッチ４が接続状態となり、この接続により送信
電源制御回路５からのマイナス電圧の供給部と、プラス
電圧の供給部が接続状態となる。したがって、マイナス
電圧の供給部に接続される電解コンデンサＣ１０の電荷
がプラス電圧の供給部側に通流する。同時にプラス電圧
の供給部に接続した電解コンデンサＣ１２の電荷がマイ
ナス電圧の供給部側に通流して、それぞれ、電解コンデ
ンサＣ１０、Ｃ１２の電荷が瞬時に放電することにな
る。Next, the operation of this configuration will be described.
When the control signal is supplied to the transmission power control circuit 5 to stop the transmission output from the FET power amplifier 3, the control signal is also supplied to the switch 4 at the same time. With this control signal, the switch 4 is connected, and the connection between the negative voltage supply unit and the positive voltage supply unit from the transmission power supply control circuit 5 is connected by this connection. Therefore, the electric charge of the electrolytic capacitor C10 connected to the negative voltage supply unit flows to the positive voltage supply unit side. At the same time, the electric charge of the electrolytic capacitor C12 connected to the positive voltage supply section flows to the negative voltage supply section side, and the electric charges of the electrolytic capacitors C10 and C12 are instantaneously discharged, respectively.
【００１１】このようにして、送信出力停止時にスイッ
チ４が接続状態となりマイナス電圧の供給部と、プラス
電圧の供給部が接続状態となり、マイナス電圧の供給部
に接続される電解コンデンサＣ１０の電荷がプラス電圧
の供給部側に通流し、同時にプラス電圧の供給部に接続
した電解コンデンサＣ１２の電荷がマイナス電圧の供給
部側に通流して、大容量の電解コンデンサＣ１０、Ｃ１
２の電荷が瞬時に放電するため、ＦＥＴ電力増幅器３か
らの送信出力も瞬時に立ち下がることになり、無線送受
信機では、送信から受信動作に切り換わる際の、送信出
力の受信部への周り込みが阻止できることになる。In this way, when the transmission output is stopped, the switch 4 is connected and the negative voltage supply unit and the positive voltage supply unit are connected, and the electric charge of the electrolytic capacitor C10 connected to the negative voltage supply unit is reduced. The electric charge of the electrolytic capacitor C12 connected to the positive voltage supply unit flows at the same time to the negative voltage supply unit, and the large-capacity electrolytic capacitors C10, C1
2 is instantaneously discharged, the transmission output from the FET power amplifier 3 also instantaneously falls, and in the wireless transceiver, when the operation switches from the transmission to the reception operation, the transmission output around the reception unit is switched. Can be prevented.
【００１２】[0012]
【発明の効果】以上の説明から明らかなように、本発明
の送信出力制御装置によれば、送信停止時のスイッチの
接続で負電圧の供給部に接続される電解コンデンサの電
荷が正電圧の供給部側に通流し、同時に正電圧の供給部
側の電解コンデンサの電荷が負電圧の供給部側に通流し
て、それぞれのコンデンサの電荷を瞬時に放電するた
め、送信停止時の送信電力を瞬時に立ち下げることので
きるという効果を有する。As is apparent from the above description, according to the transmission output control device of the present invention, the electric charge of the electrolytic capacitor connected to the negative voltage supply unit by the connection of the switch when transmission is stopped is positive. The electric power of the electrolytic capacitor on the side of the positive voltage supply part flows to the side of the negative voltage supply part, and the electric charge of each capacitor is discharged instantaneously. This has the effect that it can be shut down instantly.
【図１】本発明の送信出力制御装置の実施例の構成を示
すブロック図FIG. 1 is a block diagram showing a configuration of an embodiment of a transmission output control device of the present invention.
【図２】従来例の送信出力制御装置の構成を示すブロッ
ク図FIG. 2 is a block diagram showing a configuration of a conventional transmission output control device.
３ ＦＥＴ電力増幅器 ４ スイッチ ５ 送信電源制御回路 Ｃ１０、Ｃ１２ 電解コンデンサ 3 FET power amplifier 4 Switch 5 Transmission power control circuit C10, C12 Electrolytic capacitor
Claims (2)
に負電圧及び正電圧が供給部に印加されるＦＥＴ電力増
幅器と、入力制御信号により前記ＦＥＴ電力増幅器に負
電圧及び正電圧を印加あるいは停止させ、送信電力を制
御する送信電源制御回路と、前記ＦＥＴ電力増幅器の負
電圧供給部と接地間に、及び正電圧供給部と接地間にそ
れぞれ接続されるコンデンサを有する送信出力制御装置
であって、 前記負電圧、正電圧の各供給部間を断接するよう接続さ
れ、前記入力制御信号により制御されるスイッチを有
し、送信電力を停止させる際に前記各コンデンサの電荷
を相互に通流放電させる、 送信出力制御装置。1. When a high-frequency signal is input to a gate,
Negative and positive voltages applied to the supply
And the input power control signal to the FET power amplifier.
Apply or stop voltage and positive voltage to control transmission power.
A transmission power supply control circuit for controlling the
Between the voltage supply and ground, and between the positive voltage supply and ground.
Transmission power control device having respective connected capacitors
A is the negative voltage, the supply unit between is connected to disconnecting the positive voltage
A switch controlled by the input control signal.
When the transmission power is stopped,
A transmission output control device for mutually flowing discharges .
する無線送受信機。2. A transmission output control device according to claim 1.
Wireless transceiver .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3231409A JP2699710B2 (en) | 1991-09-11 | 1991-09-11 | Transmission output control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3231409A JP2699710B2 (en) | 1991-09-11 | 1991-09-11 | Transmission output control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0575483A JPH0575483A (en) | 1993-03-26 |
| JP2699710B2 true JP2699710B2 (en) | 1998-01-19 |
Family
ID=16923151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3231409A Expired - Fee Related JP2699710B2 (en) | 1991-09-11 | 1991-09-11 | Transmission output control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2699710B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56172037U (en) * | 1980-05-23 | 1981-12-18 | ||
| JPS599660U (en) * | 1982-07-09 | 1984-01-21 | 八重洲無線株式会社 | Transmission prevention circuit during no modulation |
-
1991
- 1991-09-11 JP JP3231409A patent/JP2699710B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0575483A (en) | 1993-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |