JPH0555938A - Radio transmitter - Google Patents
Radio transmitterInfo
- Publication number
- JPH0555938A JPH0555938A JP3213891A JP21389191A JPH0555938A JP H0555938 A JPH0555938 A JP H0555938A JP 3213891 A JP3213891 A JP 3213891A JP 21389191 A JP21389191 A JP 21389191A JP H0555938 A JPH0555938 A JP H0555938A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- power
- transmission
- amplifier circuit
- 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
Landscapes
- Transmitters (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は移動用通信装置その他無
線送信装置に利用する。特に、送信開始時の周波数変動
抑制に関する。The present invention is used in mobile communication devices and other wireless transmission devices. In particular, it relates to suppression of frequency fluctuation at the start of transmission.
【０００２】[0002]
【従来の技術】送信搬送波周波数発生回路の出力信号を
増幅するドライバ増幅回路と、このドライバ増幅回路の
出力信号を増幅する電力増幅回路とを一つの電源回路で
立ち上げて、送信出力の増幅を行っている。2. Description of the Related Art A driver amplifier circuit for amplifying an output signal of a transmission carrier frequency generating circuit and a power amplifier circuit for amplifying an output signal of this driver amplifier circuit are activated by one power supply circuit to amplify the transmission output. Is going.
【０００３】[0003]
【発明が解決しようとする課題】この方式による送信出
力立ち上げ時の送信搬送波周波数発生回路の負荷インピ
ーダンス変動は、ドライバ増幅回路と電力増幅回路の両
方の立ち上がりの影響を受けることになり、この負荷イ
ンピーダンス変動に起因する送信周波数の変動が発生す
る。この送信周波数の変動は正しい情報の伝達および周
辺機器の正常な動作を妨害する原因となる。The load impedance fluctuation of the transmission carrier frequency generating circuit at the time of raising the transmission output by this method is affected by the rising of both the driver amplifier circuit and the power amplifier circuit. The transmission frequency fluctuates due to the impedance fluctuation. This fluctuation in the transmission frequency causes a problem in transmission of correct information and normal operation of peripheral devices.
【０００４】本発明はこのような背景に行われたもので
あり、周波数変動の少ない無線送信装置の提供を目的と
する。The present invention has been made against such a background, and an object thereof is to provide a radio transmitting apparatus with little frequency fluctuation.
【０００５】[0005]
【課題を解決するための手段】本発明は位相制御ループ
回路を含む送信搬送波周波数発生回路と、この送信搬送
波周波数発生回路の出力信号を増幅するドライバ増幅回
路と、このドライバ増幅回路の出力信号を増幅する電力
増幅回路とを備えた無線送信装置において前記電力増幅
回路用の電源回路を前記送信搬送波周波数発生回路用の
電源回路とは別に設け、電源起動時に前記電力増幅回路
用の電源回路を前記送信搬送波周波数発生回路用の電源
回路より前記位相制御ループ回路が安定するに要する時
間以上遅れて立ち上げる回路手段を備える。なお、前記
回路手段は電力増幅回路用の電源回路の起動制御信号通
路に挿入された遅延回路であることが望ましい。The present invention provides a transmission carrier frequency generating circuit including a phase control loop circuit, a driver amplifier circuit for amplifying an output signal of the transmission carrier frequency generating circuit, and an output signal of the driver amplifier circuit. In a wireless transmission device including a power amplification circuit for amplifying, a power supply circuit for the power amplification circuit is provided separately from a power supply circuit for the transmission carrier frequency generation circuit, and the power supply circuit for the power amplification circuit is provided when the power supply is activated. Circuit means is provided to start up with a delay of a time required for the phase control loop circuit to stabilize from the power supply circuit for the transmission carrier frequency generation circuit. The circuit means is preferably a delay circuit inserted in the activation control signal path of the power supply circuit for the power amplification circuit.
【０００６】[0006]
【作用】ドライバ増幅回路の立ち上がり後に一定の遅延
時間を設け電力増幅回路を立ち上げることにより、後段
の入力インピーダンスが安定してから、送信搬送波周波
数発生回路が作動するので周波数変動を低減させること
ができる。With a certain delay time provided after the driver amplifier circuit rises and the power amplifier circuit is started up, the transmission carrier frequency generation circuit operates after the input impedance in the subsequent stage is stabilized, so that the frequency fluctuation can be reduced. it can.
【０００７】[0007]
【実施例】本発明実施例の構成を図１、図２を参照して
説明する。図１は本発明実施例の構成図である。図２は
本発明実施例の送信開始手順を示すタイムチャートであ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram of an embodiment of the present invention. FIG. 2 is a time chart showing a transmission start procedure according to the embodiment of the present invention.
【０００８】本発明は位相制御ループ回路を含む送信搬
送波周波数発生回路２と、この送信搬送波周波数発生回
路２の出力信号を増幅するドライバ増幅回路３と、この
ドライバ増幅回路３の出力信号を増幅する電力増幅回路
４とを備えた無線送信装置において電力増幅回路４用の
電源回路８を送信搬送波周波数発生回路２用の電源回路
６とは別に設け、電源起動時に電力増幅回路４用の電源
回路８を送信搬送波周波数発生回路２用の電源回路６よ
り前記位相制御ループ回路が安定するに要する時間以上
遅れて立ち上げる回路手段を備える。なお、前記回路手
段は電力増幅回路４用の電源回路８の起動制御信号通路
に挿入された遅延回路９である。According to the present invention, a transmission carrier frequency generating circuit 2 including a phase control loop circuit, a driver amplifying circuit 3 for amplifying an output signal of the transmitting carrier frequency generating circuit 2, and an output signal of the driver amplifying circuit 3 are amplified. In the wireless transmission device provided with the power amplification circuit 4, the power supply circuit 8 for the power amplification circuit 4 is provided separately from the power supply circuit 6 for the transmission carrier frequency generation circuit 2, and the power supply circuit 8 for the power amplification circuit 4 is activated at the time of power activation. Circuit means for starting the power supply circuit 6 for the transmission carrier frequency generation circuit 2 with a delay longer than the time required for the phase control loop circuit to stabilize. The circuit means is a delay circuit 9 inserted in the activation control signal path of the power supply circuit 8 for the power amplification circuit 4.
【０００９】次に本発明実施例の動作を説明すると、制
御回路１よりの送信出力立ち上げ信号は、電源回路７に
入力されるとともに遅延回路９を経由して電源回路８に
も入力される。電源回路７はドライバ増幅回路３に電源
電圧を供給し、電源回路８は一定の遅延時間の後に電力
増幅回路４に電源電圧を供給する。ここで、送信出力立
ち上げ時における動作を図２を参照して説明する。送信
装置の動作開始状態になると、まず制御回路１より送信
搬送波周波数発生回路２の電源ＯＮ信号が出力され電源
回路６を駆動し電源電圧が送信搬送波周波数発生回路２
に印加される。次に制御回路１より送信チャンネル指定
データが出力され送信搬送波周波数発生回路２をロック
状態とする。続いて、制御回路１より送信出力立ち上げ
信号が出力され、電源回路７を駆動し電源電圧がドライ
バ増幅回路３に印加されることによりドライバ増幅回路
３の出力は立ち上がる。また、一方で送信出力立ち上げ
信号は遅延回路９を経由し、一定の遅延時間後、電源回
路８を駆動するため、電源電圧がドライバ増幅回路３よ
りも遅れて電力増幅回路４に印加され、送信出力は電力
増幅回路４より出力される。Next, the operation of the embodiment of the present invention will be described. The transmission output rising signal from the control circuit 1 is input to the power supply circuit 7 and also to the power supply circuit 8 via the delay circuit 9. .. The power supply circuit 7 supplies the power supply voltage to the driver amplification circuit 3, and the power supply circuit 8 supplies the power supply voltage to the power amplification circuit 4 after a certain delay time. Here, the operation at the time of starting the transmission output will be described with reference to FIG. When the operation of the transmitter is started, the control circuit 1 first outputs a power-on signal of the transmission carrier frequency generation circuit 2 to drive the power supply circuit 6, and the power supply voltage becomes the transmission carrier frequency generation circuit 2.
Applied to. Next, the transmission channel designation data is output from the control circuit 1 and the transmission carrier frequency generation circuit 2 is set in the locked state. Then, the transmission output rising signal is output from the control circuit 1, the power supply circuit 7 is driven, and the power supply voltage is applied to the driver amplification circuit 3, whereby the output of the driver amplification circuit 3 rises. On the other hand, the transmission output rising signal passes through the delay circuit 9 and drives the power supply circuit 8 after a certain delay time, so that the power supply voltage is applied to the power amplification circuit 4 later than the driver amplification circuit 3. The transmission output is output from the power amplification circuit 4.
【００１０】ここで前記一定の遅延時間は、おおむね数
ｍｓｅｃから数十ｍｓｅｃに設定されており、電力増幅
回路４が立ち上がるときには、すでにドライバ増幅回路
３が作動しているため、送信搬送波周波数発生回路２の
負荷インピーダンス変動はドライバ増幅回路３の事前の
作動により緩衝され、送信周波数変動量は低減される。
また、送信ＯＦＦ時の待ち受け状態においては、送受共
用器５は受信側に切替えられ、ドライバ増幅回路３およ
び電力増幅回路４の電源はＯＦＦとなり送信搬送波は断
となる。Here, the fixed delay time is set to approximately several msec to several tens msec, and when the power amplifying circuit 4 rises, the driver amplifying circuit 3 is already in operation, so the transmission carrier frequency generating circuit. The load impedance fluctuation of No. 2 is buffered by the operation of the driver amplifier circuit 3 in advance, and the transmission frequency fluctuation amount is reduced.
In the standby state when transmission is OFF, the duplexer 5 is switched to the reception side, the power sources of the driver amplification circuit 3 and the power amplification circuit 4 are turned off, and the transmission carrier wave is cut off.
【００１１】[0011]
【発明の効果】ドライバ増幅回路の立ち上がり後に一定
の時間を設け、電力増幅回路を立ち上げて、送信搬送波
周波数発生回路の負荷インピーダンス変動を低減するこ
とにより、負荷インピーダンス変動に起因する送信周波
数変動を低減する。EFFECTS OF THE INVENTION A certain period of time is provided after the driver amplifier circuit rises, the power amplifier circuit is started up, and the load impedance variation of the transmission carrier frequency generation circuit is reduced to reduce the transmission frequency variation due to the load impedance variation. Reduce.
【図１】本発明実施例の構成図。FIG. 1 is a configuration diagram of an embodiment of the present invention.
【図２】本発明実施例の送信開始手順を示すタイムチャ
ート。FIG. 2 is a time chart showing a transmission start procedure according to the embodiment of the present invention.
１ 制御回路 ２ 送信搬送波周波数発生回路 ３ ドライバ増幅回路 ４ 電力増幅回路 ５ 送受共用器 ６〜８電源回路 ９ 遅延回路 １０ アンテナ 1 control circuit 2 transmission carrier frequency generation circuit 3 driver amplification circuit 4 power amplification circuit 5 duplexer 6-8 power supply circuit 9 delay circuit 10 antenna
Claims (2)
数発生回路と、この送信搬送波周波数発生回路の出力信
号を増幅するドライバ増幅回路と、このドライバ増幅回
路の出力信号を増幅する電力増幅回路とを備えた無線送
信装置において、 前記電力増幅回路用の電源回路を前記送信搬送波周波数
発生回路用の電源回路とは別に設け、電源起動時に前記
電力増幅回路用の電源回路を前記送信搬送波周波数発生
回路用の電源回路より前記位相制御ループ回路が安定す
るに要する時間以上遅れて立ち上げる回路手段を備えた
ことを特徴とする無線送信装置。1. A transmission carrier frequency generation circuit including a phase control loop circuit, a driver amplification circuit for amplifying an output signal of the transmission carrier frequency generation circuit, and a power amplification circuit for amplifying an output signal of the driver amplification circuit. In the wireless transmission device, the power supply circuit for the power amplification circuit is provided separately from the power supply circuit for the transmission carrier frequency generation circuit, and the power supply circuit for the power amplification circuit is provided for the transmission carrier frequency generation circuit at the time of power activation. 2. A radio transmitting apparatus comprising circuit means which is started up with a delay of a time longer than the time required for the phase control loop circuit to stabilize from the power supply circuit.
の起動制御信号通路に挿入された遅延回路である請求項
１記載の無線送信装置。2. The radio transmitting apparatus according to claim 1, wherein the circuit means is a delay circuit inserted in a start control signal path of a power supply circuit for a power amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3213891A JPH0555938A (en) | 1991-08-26 | 1991-08-26 | Radio transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3213891A JPH0555938A (en) | 1991-08-26 | 1991-08-26 | Radio transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0555938A true JPH0555938A (en) | 1993-03-05 |
Family
ID=16646730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3213891A Pending JPH0555938A (en) | 1991-08-26 | 1991-08-26 | Radio transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0555938A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100892027B1 (en) * | 2000-03-04 | 2009-04-07 | 콸콤 인코포레이티드 | Apparatus and method for transmitter architectures in communications systems |
| JP2013090132A (en) * | 2011-10-18 | 2013-05-13 | Renesas Mobile Corp | Semiconductor device and radio communication terminal mounted with the same |
-
1991
- 1991-08-26 JP JP3213891A patent/JPH0555938A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100892027B1 (en) * | 2000-03-04 | 2009-04-07 | 콸콤 인코포레이티드 | Apparatus and method for transmitter architectures in communications systems |
| JP2013090132A (en) * | 2011-10-18 | 2013-05-13 | Renesas Mobile Corp | Semiconductor device and radio communication terminal mounted with the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |