JPS59228A - Transmitting electric power controller - Google Patents

Transmitting electric power controller

Info

Publication number
JPS59228A
JPS59228A JP11013982A JP11013982A JPS59228A JP S59228 A JPS59228 A JP S59228A JP 11013982 A JP11013982 A JP 11013982A JP 11013982 A JP11013982 A JP 11013982A JP S59228 A JPS59228 A JP S59228A
Authority
JP
Japan
Prior art keywords
output
amplifier
level
voltage
current
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.)
Granted
Application number
JP11013982A
Other languages
Japanese (ja)
Other versions
JPS6243372B2 (en
Inventor
Kazuo Kimura
和夫 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP11013982A priority Critical patent/JPS59228A/en
Publication of JPS59228A publication Critical patent/JPS59228A/en
Publication of JPS6243372B2 publication Critical patent/JPS6243372B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02Transmitters
    • H04B1/04Circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02Transmitters
    • H04B1/04Circuits
    • H04B2001/0408Circuits with power amplifiers
    • H04B2001/0416Circuits with power amplifiers having gain or transmission power control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

PURPOSE:To prevent an unnecessary drop of a transmitting output level, without damaging a protecting function of a transmitter, by controlling a reflected wave detecting level in accordance with a current value supplied to a power amplifier. CONSTITUTION:An input signal is amplified by a driving amplifier 1, its output is amplified by a power amplifier 2, and its output is radiated from an antenna 5 through an LPF4. A traveling wave of an output side of this amplifier 2 is detected by a CM coupler 3, is converted to a DC level proportional to its detecting level by a detector I 6, and a current controller I 12 is controlled by its voltage. Also, when it is detected by the coupler 3 that a reflected wave is generated in the output side of the amplifier 2, the detecting level proportional to its reflected wave is converted to DC voltage by a detector II7 and is inputted to a multiplier 11. By this multiplier 11, it is multiplied by an output of a current detector 10 proportional to a current supplied to the amplifier 2, and its output is supplied to a current controller II13. In this way, an unnecessary drop of a transmitting level is prevented by controlling an output of the amplifier 1.

Description

【発明の詳細な説明】 この発明は、送信機の送信レベルを自動的にコントロー
ルする送信電力制御装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmission power control device that automatically controls the transmission level of a transmitter.

従来この種の装置として第1図に示すものがあった。(
1)は入力信号を励振増幅するドライブアンプ(1)で
増幅された信号を所要の送信電力レベルに電力増幅する
パワーアンプ、(4)はこのパワーアンプ(2)から出
力される送信信号の高調波を除去する低域P波器、(5
)はこの低域P波器(4)の出力信号を空中に放射する
アンテナ、(3)は上記パワーアンプ(2)から出力さ
れる送信信号の進行波および、パワーアンプ(2)の出
力インピーダンスと低域r波器(4)あるいはアンテナ
(5)の入出力インピーダンスとの不整合により生じる
反射波信号を検出す゛るCM結合器、(6)はこのCM
結合器(3)により検出された進行波を検波し、そのレ
ベルに比例した直流電圧を出力する検波器I 、 (7
)は上記CM結合器(3)により検出された反射波信号
を検波し、そのレベルに比例した直流電圧を出力する検
波器■、(8)はこの検波器■(7)によって出力され
る検波電圧と、上記検波器■(6)によって出力された
検波電圧とを加算する直流電圧加算器、(9)はこの電
流電圧加算器(8)の出力電圧変化とドライブアンプ(
1)の出力変化が反対になるよう、すなわちドライブア
ンプ(1)へ供給される電流を負帰還制御する電流制御
器である。
A conventional device of this type is shown in FIG. (
1) is a power amplifier that amplifies the signal amplified by the drive amplifier (1) that excites and amplifies the input signal to the required transmission power level, and (4) is the harmonic of the transmission signal output from this power amplifier (2). Low-frequency P-wave generator that removes waves, (5
) is an antenna that radiates the output signal of this low-frequency P-wave device (4) into the air, and (3) is the traveling wave of the transmission signal output from the power amplifier (2) and the output impedance of the power amplifier (2). The CM coupler (6) detects the reflected wave signal caused by the mismatch between the input and output impedance of the low-frequency r-wave device (4) or the antenna (5).
A detector I (7) detects the traveling wave detected by the coupler (3) and outputs a DC voltage proportional to its level.
) is a detector ■ that detects the reflected wave signal detected by the CM coupler (3) and outputs a DC voltage proportional to its level, and (8) is a detector ■ that outputs a DC voltage proportional to the level of the reflected wave signal detected by the CM coupler (3). A DC voltage adder (9) adds the voltage and the detected voltage output by the detector (6) above, and a DC voltage adder (9) combines the output voltage change of this current/voltage adder (8) and the drive amplifier (
This is a current controller that controls the current supplied to the drive amplifier (1) by negative feedback so that the change in the output of (1) is reversed.

次に動作について説明する。入力信号はドライブアンプ
(1)で増幅され、その出力信号はパワーアンプ(2)
によって増幅される。パワーアンプ(2)の出力信号は
低域P波器(4)を通ってアンテナ(5)から空中に放
射される。この放射出力すなわち送信出力のレベルを所
定の値に維持したり、あるいはパワーアンプ(2)の出
力側の不整合のためパワーアンプの破壊がおこらないよ
うに送信電力制御がおこなわれる。すなわち、パワーア
ンプ(2)の出力側の進行波がCM結合器(3)によっ
て検出され、検出された進行波は検波器I(6)によっ
て進行波電力に比例した直流電圧に変換出力される。ま
た、パワーアンプ(2)の出力インピーダンスと低域P
波器(4)あるいはアンテナの入出力インピーダンスと
の不整合によって生じる反射波もCM結合器(3)によ
って検出され、検出された反射波は検波器■(7)によ
って反射波電力に比例した直流電圧に変換出力される。
Next, the operation will be explained. The input signal is amplified by the drive amplifier (1), and the output signal is amplified by the power amplifier (2).
is amplified by The output signal of the power amplifier (2) passes through a low-frequency P wave generator (4) and is radiated into the air from an antenna (5). Transmission power control is performed to maintain the level of this radiation output, that is, transmission output, at a predetermined value, or to prevent damage to the power amplifier (2) due to mismatch on the output side of the power amplifier (2). That is, the traveling wave on the output side of the power amplifier (2) is detected by the CM coupler (3), and the detected traveling wave is converted and output by the detector I (6) into a DC voltage proportional to the traveling wave power. . Also, the output impedance of the power amplifier (2) and the low frequency P
The reflected wave caused by the mismatch with the input and output impedance of the wave detector (4) or the antenna is also detected by the CM coupler (3), and the detected reflected wave is converted into a direct current proportional to the reflected wave power by the wave detector (7). It is converted to voltage and output.

ここで、反射波がない場合、検波器■(6)の出力電圧
は直流電圧加算器(8)を介して電流制御器(9)に印
加され、この印加された電圧の変化とドライブアンプ(
1)の出力変化が反対になるように電流制御器(9)が
動作し、パワーアンプ(2)出力すなわちアンテナ出力
がレベルに維持される。一方、検波器■(7)の出力電
圧は反射波電力に比例した電圧で、反射波レベルが高い
ときこの電圧が高くなり、直流電圧加算器(8)を通っ
て電流制御器(9)に印加される。
Here, if there is no reflected wave, the output voltage of the detector (6) is applied to the current controller (9) via the DC voltage adder (8), and the change in this applied voltage and the drive amplifier (
The current controller (9) operates so that the output change of 1) is opposite, and the power amplifier (2) output, that is, the antenna output, is maintained at the level. On the other hand, the output voltage of the detector (7) is a voltage proportional to the reflected wave power, and when the reflected wave level is high, this voltage increases and passes through the DC voltage adder (8) to the current controller (9). applied.

このとき電流制御器(9)はドライブアンプ(1)に供
給される電流を減少させパワーアンプ(2)の破壊防止
の働きをする。
At this time, the current controller (9) reduces the current supplied to the drive amplifier (1) to prevent damage to the power amplifier (2).

従来の送信電力制御装置は以上のように構成されている
ので、パワーアンプ(2)への供給電流が少なくその送
信能力に余力がある場合でも反射波成分によりパワーア
ンプの送信出力が不必要に低下するという欠点があった
Since the conventional transmission power control device is configured as described above, even if the current supplied to the power amplifier (2) is small and there is some surplus in its transmission capacity, the transmission output of the power amplifier is unnecessary due to the reflected wave component. The disadvantage was that it decreased.

この発明は上記のような従来のものの欠点を除去するた
めになされたもので、反射波検出レベルをパワーアンプ
への供給電流に応じて制御(比例制御)することにより
、パワーアンプの送信能力を十分に引き出して、無用な
送信出力の低下を防ぐことができる送信電力制御装置を
提供することを目的としている。
This invention was made to eliminate the drawbacks of the conventional ones as described above, and by controlling the reflected wave detection level according to the current supplied to the power amplifier (proportional control), the transmission ability of the power amplifier can be increased. It is an object of the present invention to provide a transmission power control device that can sufficiently draw out the transmission power and prevent unnecessary reductions in transmission power.

以下、この発明の一実施例を図について説明する。第2
図にふいて、符号(1)〜(7)は従来の第1図のもの
と同一である。alはパワーアンプ(2)に供給される
電流を検出しそれに比例した電圧を検出する電流検出器
、(ロ)はこの直流電流検出器Q1より出力された電圧
と、検波器■(7)より出方される電圧とを掛算し、そ
の掛算値すなわちパワーアンプ(2)供給電流により比
例制御された反射波の検波電圧を出力する掛算器、(イ
)は検波器■(6)の進行波の検波電圧によりドライブ
アンプ(1)の供給電流を制御する電流制御器I、α葎
は掛算器αυの出力によりドライブアンプ(1)の供給
電流を制御する電流制御器■である。なおこれら電流制
御器I(2)およびII Q3は、ドライブアンプ(1
)の出方が負帰還制御すなわち、検波器■(6)あるい
は掛算器aυからの出力電圧が大きくなるとドライブア
ンプ(1)への供給電流を減少させるよう動作する。
An embodiment of the present invention will be described below with reference to the drawings. Second
In the figure, symbols (1) to (7) are the same as those in the conventional figure 1. al is a current detector that detects the current supplied to the power amplifier (2) and a voltage proportional to it, and (b) is the voltage output from this DC current detector Q1 and the voltage from the detector (7). A multiplier that outputs the detected voltage of the reflected wave, which is proportionally controlled by the power amplifier (2) supply current, by multiplying the output voltage by the output voltage. The current controller I controls the supply current of the drive amplifier (1) by the detected voltage of the current controller I, and the current controller αcontrols the supply current of the drive amplifier (1) by the output of the multiplier αυ. Note that these current controllers I (2) and II Q3 are connected to the drive amplifier (1
) is negative feedback control, that is, when the output voltage from the detector (6) or the multiplier aυ increases, the current supplied to the drive amplifier (1) is reduced.

次に動作について説明する。入力信号はドライブアンプ
(1)で増幅され、その出力信号はパワーアンプ(2)
によって増幅される。パワーアンプ(2)の出力信号は
低域F波器(4)を通り、アンテナ(5)から空中に放
射される。ここで、正常動作時においては、パワーアン
プ(2)の出力側の進行波がCM結合器(3)によって
検出され、この検出された進行波は検波器■(6)によ
ってその検出レベルに比例した直流電圧に変換出力され
る。そして、この直流電圧の変化に対し、ドライブアン
プ(1)の出力変化が反対になるように電流制御器Ia
2が動作し、パワーアンプ(2)の送信出力が所定レベ
ルに維持される。一方、パワーアンプ(2)の出力イン
ピーダンスと低域P波器(4)あるいはアンテナ(5)
の入出力インピーダンスとの不整合によって反射波が生
じると、この反射波はCM結合器(3)によって検出さ
れ、検出された反射波は検波器■(7)によってその検
出レベルに比例した直流電圧に変換出力される。そして
この出力電圧は、掛算器(11)によってパワーアンプ
(2)に供給される電流に比例した直流電流検出器αQ
の出力電圧と掛は合わされ、その掛算出力電圧が電流制
御器n (lLsに入力される。この電流制御器■(2
)は、入力される掛算出力電圧に応じてドライブアンプ
(1)の供給電流を抑制制御すなわち、掛算出力電圧が
大きくなるとドライブアンプ(1)の出力を小さくする
よう動作する。すなわち、反射波レベルおよびパワーア
ンプ(2)への供給電流が共に大きい場合には、ドライ
ブアンプ(1)への供給電流を減少させてパワーアンプ
の出力を低下させ、パワーアンプ(1)の破壊を防止す
るよう動作するが、反射波レベルは大きいがパワーアン
プ(2)への供給電流が少ない場合(すなわちパワーア
ンプ(2)に送信余力がある場合)は、掛算器0ηの掛
算出力電圧は前記の場合に比べて相対的に低下するので
、電流制御器■α1の抑制制御機能は緩和され、パワー
アンプ(2)の出力レベルの低下を小さくすることがで
きる。これにより、無用な送信レベルの低下と云った不
都合は解消される。
Next, the operation will be explained. The input signal is amplified by the drive amplifier (1), and the output signal is amplified by the power amplifier (2).
is amplified by The output signal of the power amplifier (2) passes through a low-frequency F wave generator (4) and is radiated into the air from an antenna (5). Here, during normal operation, the traveling wave on the output side of the power amplifier (2) is detected by the CM coupler (3), and this detected traveling wave is proportional to its detection level by the wave detector (6). It is converted to a DC voltage and output. Then, the current controller Ia is set so that the output change of the drive amplifier (1) is opposite to the change in the DC voltage.
2 operates, and the transmission output of the power amplifier (2) is maintained at a predetermined level. On the other hand, the output impedance of the power amplifier (2) and the low-frequency P wave device (4) or antenna (5)
When a reflected wave is generated due to a mismatch with the input/output impedance of the is converted and output. This output voltage is then detected by a DC current detector αQ proportional to the current supplied to the power amplifier (2) by a multiplier (11).
The output voltage and the multiplication voltage are combined, and the multiplication output voltage is input to the current controller n (lLs.
) operates to suppress and control the supply current of the drive amplifier (1) according to the input multiplication output voltage, that is, to reduce the output of the drive amplifier (1) when the multiplication output voltage increases. In other words, when both the reflected wave level and the current supplied to the power amplifier (2) are large, the current supplied to the drive amplifier (1) is reduced to lower the output of the power amplifier, causing damage to the power amplifier (1). However, when the reflected wave level is high but the current supplied to the power amplifier (2) is small (in other words, when the power amplifier (2) has extra transmission capacity), the multiplied output voltage of the multiplier 0η is Since the output level is relatively lower than in the above case, the suppressing control function of the current controller α1 is relaxed, and the decrease in the output level of the power amplifier (2) can be reduced. This eliminates the inconvenience of unnecessary lowering of the transmission level.

なお、上記実施例では2つの電流制御器I Q2、■(
至)を直列配設し、それぞれ別個に制御するようにした
が、検波器I(6)と掛算器aυの出力電圧を加算する
加算器を設け、この加算出力により電流制御た電流制御
に限らず、ドライブアンプ(1)の電源電圧あるいはバ
イアス電圧等を制御するようにしても同様の効果を奏す
る。
In the above embodiment, two current controllers IQ2,
) are arranged in series and each is controlled separately, but an adder is provided to add the output voltages of the detector I(6) and the multiplier aυ, and the current control is limited to current control using this added output. First, the same effect can be obtained by controlling the power supply voltage or bias voltage of the drive amplifier (1).

以上のように、この発明によれば、反射波検出レベルを
パワーアンプへ供給される電流値に応じて制御している
ので、送信機の保護機能を損なうことなく、無用な送信
出力レベルの低下を防止でき、送信機の送信能力を十分
に活用できるという効果がある。
As described above, according to the present invention, since the reflected wave detection level is controlled according to the current value supplied to the power amplifier, unnecessary reduction in the transmission output level is achieved without impairing the protection function of the transmitter. This has the effect that it is possible to prevent this, and to fully utilize the transmission capability of the transmitter.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来の送信電力制御装置を示すブロック図、第
2図はこの発明の一実施例による送信電力制御装置のブ
ロック図を示すものである。 (])・・ドライブアンプ、(2)・・パワーアンプ、
(3)・・・CM結合器、(6)・・・検波器■、(7
)・・・検波器■、α1・・・電流検出器、αυ・・掛
算器、(2)・・電流制御器■、α]・・・電流制御器
■。 なお、図中、同一符号は同一、又は相当部分を示す。
FIG. 1 is a block diagram showing a conventional transmission power control device, and FIG. 2 is a block diagram of a transmission power control device according to an embodiment of the present invention. (])...drive amplifier, (2)...power amplifier,
(3)...CM coupler, (6)...detector ■, (7
)...Detector ■, α1...Current detector, αυ...Multiplier, (2)...Current controller ■, α]...Current controller ■. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】[Claims] 入力信号を励振増幅するドライブアンプとこのドライブ
アンプの出力を所要の送信レベルに電力増幅するパワー
アンプが縦続接続され、その出力側の進行波レベルと反
射波レベルとをそれぞれ検出し、それを上記ドライブア
ンプに負帰還入力して送信レベルの安定化および破壊を
防止する送信機の送信電力制御装置において、上記検出
された反射波レベルを上記パワーアンプへの供給電流に
応じて(比例)制御することを特徴とした送信電力制御
装置。
A drive amplifier that excites and amplifies the input signal and a power amplifier that amplifies the power of the output of this drive amplifier to the required transmission level are connected in cascade, and the forward wave level and reflected wave level on the output side are detected respectively, and the levels are expressed as above. In the transmission power control device of the transmitter, which stabilizes the transmission level and prevents destruction by inputting negative feedback to the drive amplifier, the detected reflected wave level is controlled (proportional) according to the current supplied to the power amplifier. A transmission power control device characterized by:
JP11013982A 1982-06-25 1982-06-25 Transmitting electric power controller Granted JPS59228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11013982A JPS59228A (en) 1982-06-25 1982-06-25 Transmitting electric power controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11013982A JPS59228A (en) 1982-06-25 1982-06-25 Transmitting electric power controller

Publications (2)

Publication Number Publication Date
JPS59228A true JPS59228A (en) 1984-01-05
JPS6243372B2 JPS6243372B2 (en) 1987-09-14

Family

ID=14528014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11013982A Granted JPS59228A (en) 1982-06-25 1982-06-25 Transmitting electric power controller

Country Status (1)

Country Link
JP (1) JPS59228A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6385944U (en) * 1986-11-25 1988-06-04
US5526528A (en) * 1994-01-21 1996-06-11 Uniden Corporation Abnormal transmission stopping circuit for transmitter
JP2007509546A (en) * 2003-10-23 2007-04-12 ソニー エリクソン モバイル コミュニケーションズ, エービー Additional adjustment of the reference signal for automatic power control in mobile terminals
JP2015500615A (en) * 2011-12-15 2015-01-05 マーベル ワールド トレード リミテッド RF power detection circuit insensitive to process, temperature and load impedance variations

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS644450U (en) * 1987-06-26 1989-01-11
JPH0369159U (en) * 1989-11-08 1991-07-09

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6385944U (en) * 1986-11-25 1988-06-04
US5526528A (en) * 1994-01-21 1996-06-11 Uniden Corporation Abnormal transmission stopping circuit for transmitter
JP2007509546A (en) * 2003-10-23 2007-04-12 ソニー エリクソン モバイル コミュニケーションズ, エービー Additional adjustment of the reference signal for automatic power control in mobile terminals
JP2015500615A (en) * 2011-12-15 2015-01-05 マーベル ワールド トレード リミテッド RF power detection circuit insensitive to process, temperature and load impedance variations

Also Published As

Publication number Publication date
JPS6243372B2 (en) 1987-09-14

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