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KR970013808A - Power amplifier for wireless transmitters - Google Patents

Power amplifier for wireless transmitters Download PDF

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Publication number
KR970013808A
KR970013808A KR1019960032180A KR19960032180A KR970013808A KR 970013808 A KR970013808 A KR 970013808A KR 1019960032180 A KR1019960032180 A KR 1019960032180A KR 19960032180 A KR19960032180 A KR 19960032180A KR 970013808 A KR970013808 A KR 970013808A
Authority
KR
South Korea
Prior art keywords
power amplifier
power
circuit
amplifier circuit
supply 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.)
Withdrawn
Application number
KR1019960032180A
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Korean (ko)
Inventor
아키히사 스기무라
구니히코 가나자와
Original Assignee
모리 가즈히로
마쯔시다 덴시 고교 가부시키가이샤
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.)
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Publication date
Application filed by 모리 가즈히로, 마쯔시다 덴시 고교 가부시키가이샤 filed Critical 모리 가즈히로
Publication of KR970013808A publication Critical patent/KR970013808A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/007—Control dependent on the supply voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3089—Control of digital or coded signals

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

주파수분할 다원액세스(FDMA)방식의 무선전화 송신기에 있어서, 전력증폭회로에 인가하는 직류전원전압(Vdd)을 증폭기 출력전력의 크기에 따라 2단계로 전환함으로써, 전력증폭회로의 입출력특성을 제어한다. 그 때문에 마이크로 프로세서는 전력증폭회로의 출력측의 분배기로부터 공급되는 RF신호를 검파회로로 처리하여 얻어지는 직류의 이득제어신호를 기초로 하여 증폭기 출력전력이 500mW 미만인 경우에는 2.5V가, 증폭기 출력전력이 500mW 이상인 경우에는 3.5V가 각각 직류전원전압(Vdd)으로서 전력증폭회로에 인가되도록 플러스전원에 접속된 전압 레귤레이터를 제어한다. 전력증폭회로의 직류바이어스전압(Vgg)은 -2.5V로 고정된다. 이로써, 매우 높은 부가효율을 가지고, 또 출력특성의 직선성에 우수한 전력증폭기를 실현할 수 있다.In a frequency division multiple access (FDMA) wireless telephone transmitter, the input / output characteristics of the power amplifier circuit are controlled by switching the DC power supply voltage (Vdd) applied to the power amplifier circuit to two levels according to the magnitude of the amplifier output power . Therefore, based on the direct current gain control signal obtained by processing the RF signal supplied from the distributor at the output side of the power amplifier circuit, the microprocessor calculates 2.5 V when the output power of the amplifier is less than 500 mW, , The voltage regulator connected to the positive power supply is controlled so that 3.5 V is applied to the power amplification circuit as the DC power supply voltage Vdd, respectively. The DC bias voltage Vgg of the power amplifier circuit is fixed at -2.5V. Thereby, it is possible to realize a power amplifier having a very high addition efficiency and excellent in linearity of output characteristics.

Description

무선송신기용 전력증폭기Power amplifier for wireless transmitters

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명에 관한 FDMA방식의 무선전화 송신기용 전력증폭기의 구성예를 나타내는 블록도,FIG. 1 is a block diagram showing a configuration example of a power amplifier for a wireless telephone transmitter of the FDMA scheme according to the present invention;

제2도는 제1도 중의 전력증폭회로의 내부구성을 나타내는 회로도,FIG. 2 is a circuit diagram showing the internal configuration of the power amplifier circuit in FIG. 1,

제3도는 제1도의 전력증폭기의 전력이득과 교류출력전력의 관계를 나타내는 도면,FIG. 3 is a diagram showing the relationship between the power gain of the power amplifier and the AC output power of FIG. 1;

제4도는 본 발명에 관한 TDMA방식의 무선전화 송신기용 전력증폭기의 구성예를 나타내는 블록도,4 is a block diagram showing a configuration example of a power amplifier for a TDMA radio telephone transmitter according to the present invention;

제5도는 제4도의 전력증폭기의 전력이득과 교류출력전력의 관계를 나타내는 도면,FIG. 5 is a diagram showing the relationship between the power gain and the AC output power of the power amplifier of FIG. 4,

제6도는 본 발명에 관한 CDMA방식의 무선전화 송신기용 전력증폭기의 구성예를 나타내는 블록도,6 is a block diagram showing a configuration example of a power amplifier for a CDMA radio telephone transmitter according to the present invention;

제7도는 제6도의 전력증폭기의 전력이득과 교류출력전력의 관계를 나타내는 도면,7 shows the relationship between the power gain of the power amplifier and the AC output power of FIG. 6,

제8도는 종래의 FDMA방식의 무선전화송신기용 전력증폭기에서의 전력 이득과 교류출력전력의 관계의 예를 나타내는 도면,FIG. 8 is a diagram showing an example of a relationship between a power gain and an AC output power in a power amplifier for a conventional FDMA radio telephone transmitter;

제9도는 종래의 TDMA방식의 무선전화송신기용 전력증폭기에서의 전력이득과 교류출력전력의 관계의 예를 나타내는 도면,FIG. 9 is a diagram showing an example of a relationship between a power gain and an AC output power in a power amplifier for a conventional TDMA radio telephone transmitter;

제10도는 종래의 CDMA방식의 무선전화송신기용 전력증폭기에서의 전력이득과 교류출력전력의 관계의 예를 나타내는 도면.FIG. 10 is a diagram showing an example of a relationship between a power gain and an AC output power in a power amplifier for a conventional CDMA radio telephone transmitter;

Claims (9)

무선송신기를 위한 전력증폭기에 있어서, 직류전압원과 전압 레귤레이터로 구성되는 직류가변 전압회로와, 상기 직류가변 전압회로의 직류전원전압을 결정하기 위한 제어회로와, 상기 직류가변 전압회로로부터의 직류전원전압을 이용하여 무선주파수신호를 증폭하기 위한 전력증폭회로와, 상기 전력증폭회로에 인가되는 직류전원전압을 이 전력증폭회로의 교류출력전력의 크기에 따라 적어도 2단계로 전환하기 위한 수단을 구비한 것을 특징으로 하는 전력증폭기.A power amplifier for a radio transmitter, comprising: a DC variable voltage circuit comprising a DC voltage source and a voltage regulator; a control circuit for determining a DC power supply voltage of the DC variable voltage circuit; and a DC power supply voltage And a means for switching the DC power supply voltage applied to the power amplifying circuit to at least two stages according to the magnitude of the AC output power of the power amplifying circuit Features a power amplifier. 제1항에 있어서, 상기 전력증폭회로는 무선전화 송신기용인 것을 특징으로 하는 전력증폭기.2. The power amplifier of claim 1, wherein the power amplifier circuit is for a radiotelephone transmitter. 제1항에 있어서, 상기 전력증폭회로는 이 전력증폭회로의 교류출력전력이 높아짐에 따라 이 전력증폭회로의 전력이득이 감소하는 특성을 가지는 것을 특징으로 하는 전력 증폭기.The power amplifier according to claim 1, wherein the power amplifier circuit has a characteristic in which the power gain of the power amplifier circuit decreases as the AC output power of the power amplifier circuit increases. 제1항에 있어서, 상기 전력증폭회로의 저출력전력동작시에 이 전력증폭회로에 인가되는 직류전원전압이 고출력전력 동작시에 비하여 낮은 것을 특징으로 하는 전력증폭기.The power amplifier according to claim 1, wherein the DC power supply voltage applied to the power amplifier circuit during operation of the power amplifier circuit is lower than that during operation of the high power device. 제4항에 있어서, 아날로그 변조방식으로 동작하는 것을 특징으로 하는 전력증폭기.5. The power amplifier of claim 4, wherein the power amplifier operates in an analog modulation manner. 제5항에 있어서, 아날로그 변조방식에 이용하는 액세스방식으로서 주파수분할 다원액세스방식(FDMA)을 채용한 것을 특징으로 하는 전력증폭기.The power amplifier according to claim 5, wherein a frequency division multiple access method (FDMA) is employed as an access method used for an analog modulation method. 제4항에 있어서, 디지털 변조방식으로 동작하는 것을 특징으로 하는 전력증폭기.5. The power amplifier of claim 4, wherein the power amplifier operates in a digital modulation scheme. 제7항에 있어서, 디지털 변조방식에 이용하는 액세스방식으로서 시분할 다원액세스방식(TDMA)을 채용한 것을 특징으로 하는 전력증폭기.The power amplifier according to claim 7, wherein a time division multiple access method (TDMA) is employed as an access method used in the digital modulation method. 제7항에 있어서, 디지털 변조방식에 이용하는 액세스방식으로서 부호분할 다원액세스방식(CDMA)을 채용한 것을 특징으로 하는 전력증폭기.The power amplifier according to claim 7, wherein a code division multiple access system (CDMA) is employed as an access system used in a digital modulation system. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960032180A 1995-08-29 1996-08-01 Power amplifier for wireless transmitters Withdrawn KR970013808A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7220230A JPH0964757A (en) 1995-08-29 1995-08-29 Power amplifier for radio transmitter
JP95-220,230 1995-08-29

Publications (1)

Publication Number Publication Date
KR970013808A true KR970013808A (en) 1997-03-29

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ID=16747933

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960032180A Withdrawn KR970013808A (en) 1995-08-29 1996-08-01 Power amplifier for wireless transmitters

Country Status (2)

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JP (1) JPH0964757A (en)
KR (1) KR970013808A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6265935B1 (en) 1998-02-19 2001-07-24 Ntt Mobile Communications Network Inc. Amplifier for radio transmission
JP3259703B2 (en) 1998-12-28 2002-02-25 日本電気株式会社 Microwave amplifier circuit
KR100657104B1 (en) * 1999-10-22 2006-12-15 엘지전자 주식회사 Power Amplifier Control Circuit of Mobile Communication Terminal
JP4688722B2 (en) * 2006-04-27 2011-05-25 京セラ株式会社 Wireless communication device

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Publication number Publication date
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Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19960801

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid