KR960003125A - Predistorter to Improve Nonlinearity of Transmission Output of Multiple Radio Transceivers - Google Patents

Predistorter to Improve Nonlinearity of Transmission Output of Multiple Radio Transceivers Download PDF

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Publication number
KR960003125A
KR960003125A KR1019940013668A KR19940013668A KR960003125A KR 960003125 A KR960003125 A KR 960003125A KR 1019940013668 A KR1019940013668 A KR 1019940013668A KR 19940013668 A KR19940013668 A KR 19940013668A KR 960003125 A KR960003125 A KR 960003125A
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KR
South Korea
Prior art keywords
signal
output
predistorter
primary
amplifier
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KR1019940013668A
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Korean (ko)
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KR0141434B1 (en
Inventor
박준근
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정장호
엘지정보통신 주식회사
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Priority to KR1019940013668A priority Critical patent/KR0141434B1/en
Publication of KR960003125A publication Critical patent/KR960003125A/en
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Publication of KR0141434B1 publication Critical patent/KR0141434B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0425—Circuits with power amplifiers with linearisation using predistortion

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

Abstract

본 발명은 전력 증폭기의 3차 상호 변조 왜곡 특성을 중간 주파수 대역에서 전치 왜곡시킴으로써 송신 출력 레벨을 증가시키는 전치 왜곡기를 갖는 다중 무선 송수신 장치의 송신부에 관한 것이다.The present invention relates to a transmitter of a multiple radio transceiver having a predistorter for increasing the transmission output level by predistorting the third order intermodulation distortion characteristic of a power amplifier in an intermediate frequency band.

본 발명에서 제공하는 전치 왜곡기를 갖는 다중 무선 송수신 장치는 다중신호가 입력되는 다중 신호 접속부와, 상기 다중 신호 접속부의 출력된 신호를 엔코딩하기 위한 부호화부와, 상기 부호화부의 출력을 다상 변조하기 위한 변조부와, 상기 변조부에서 변조된 신호를 중간 주파수 대역에서 전치 왜곡시키는 전치 왜곡부와, 발진 주파수를 발생시키는 국부 발진부와, 상기 국부 발진부의 발진 주파수와 상기 전치 왜곡부에서 전치 왜곡되어 출력된 중간 주파수를 혼합하는 송신 주파수 변환부와, 상기 송신 주파수 변환부의 신호를 받아 원하는 송신 출력을 얻기 위한 전력 증폭부로 구성된다.The multi-radio transceiver having a predistorter provided in the present invention includes a multiple signal connection unit to which multiple signals are input, an encoder for encoding the output signal of the multiple signal connection unit, and a modulation for multi-phase modulation of the output of the encoder. And a predistorter for predistorting the signal modulated by the modulator in an intermediate frequency band, a local oscillator for generating an oscillation frequency, an intermediate oscillator pre-distorted at the oscillation frequency and the predistorter for the local oscillator. A transmission frequency converter for mixing frequencies and a power amplifier for receiving a signal of the transmission frequency converter to obtain a desired transmission output.

Description

다중 무선 송수신 장치의 송신출력의 비직선성을 개선시키기 위한 전치 왜곡기Predistorter for Improving Nonlinearity of Transmission Output of Multiple Radio Transceivers

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 바람직한 일 실시예에 따른 다중 무선 송수신 장치의 송신부에 대한 개략 블럭도,2 is a schematic block diagram of a transmitter of a multiple wireless transceiver according to an embodiment of the present invention;

제3도는 본 발명의 바람직한 일 실시예에 따른 전치 왜곡기에 대한 개략 블럭도이다.3 is a schematic block diagram of a predistorter according to a preferred embodiment of the present invention.

Claims (1)

다중 무선 송수신 장치 송신 출력의 비직선성을 개선시키기 위한 전치왜곡기에 있어서, 다상 변조된 입력 신호를 증폭시키는 1차 증폭부와, 상기 차 증폭부에서 증폭된 입력 신호를 분배하는 1차 신호 분배기와, 상기 1차 신호 분배기에서 분배된 신호중 한 신호를 증폭시키는 2차 증폭부와, 상기 2차 증폭부에서 증폭된신호를 분배하는 2차 신호 분배기와, 상기 2차 신호 분배기에서 분배된 두 신호를 혼합하여 상호 변조 왜곡 시키는 1차 혼합기와, 상기 1차 혼합기에서 상호 변조 왜곡되어 출력된 신호와 상기 2차 신호 분배기에서 분배된 신호중 시간 지연된 한 신호를 혼합하여 상호 변조 왜곡 시키는 2차 혼합기와, 상기 2차 혼합기에서 출력된 상호 변조 왜곡 신호의 레벨을 조절하는 레벨 조정기와, 상기 레벨 조정기의 출력을 받아 소자의 특성차이에 의해 일어나는 위상차를 조절하는 가변 위상 시프트부와, 상기 1차 신호 분배기에서 분배된 두 신호의 위상차를 적당하게 조절하는 고정 위상 시프트부와, 상기 고정 위상 시프트부와 상기 가변 위상 시프트부의 출력을 결합시키는 신호 결합기와, 상기 신호 결합기의 출력을 증폭하고 송신 주파수 변환부와의 임피던스정합을 하기위한 출력부와, 상기 2차 신호 분배기에서 분배된 한 신호에 의해 상기 1차 증폭기로 입력되는 입력 신호의 레벨을 자동으로 제어하기 위한 자동 이득 제어 수단으로 구성되는 것을 특징으로 하는 전치 왜곡기.A predistorter for improving the nonlinearity of a multi-radio transceiver transmission output, comprising: a primary amplifier for amplifying a polyphase modulated input signal, a primary signal distributor for distributing an input signal amplified by the secondary amplifier; A secondary amplifier for amplifying one of the signals distributed by the primary signal divider, a secondary signal distributor for distributing the signal amplified by the secondary amplifier, and two signals distributed by the secondary signal divider. A first mixer for intermodulation distortion by mixing, a second mixer for intermodulating distortion by mixing a signal delayed in the first mixer and output from a signal delayed in the second signal distributor and intermodulated distortion; A level adjuster for adjusting the level of the intermodulation distortion signal output from the secondary mixer, and receiving the output of the level adjuster, A variable phase shift unit for adjusting a phase difference occurring, a fixed phase shift unit for appropriately adjusting a phase difference between two signals distributed by the primary signal splitter, and an output of the fixed phase shift unit and the variable phase shift unit A level of an input signal input to the primary amplifier by a signal combiner, an output for amplifying the output of the signal combiner and impedance matching with a transmission frequency converter, and a signal distributed by the secondary signal splitter A predistorter, characterized in that it comprises an automatic gain control means for automatically controlling. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940013668A 1994-06-17 1994-06-17 Multi-radio transmitter KR0141434B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940013668A KR0141434B1 (en) 1994-06-17 1994-06-17 Multi-radio transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940013668A KR0141434B1 (en) 1994-06-17 1994-06-17 Multi-radio transmitter

Publications (2)

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KR960003125A true KR960003125A (en) 1996-01-26
KR0141434B1 KR0141434B1 (en) 1998-07-01

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ID=19385468

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KR1019940013668A KR0141434B1 (en) 1994-06-17 1994-06-17 Multi-radio transmitter

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100324123B1 (en) * 1999-08-04 2002-02-20 남상욱 Method and apparatus for amplifier linearization using a predistorter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100324123B1 (en) * 1999-08-04 2002-02-20 남상욱 Method and apparatus for amplifier linearization using a predistorter

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KR0141434B1 (en) 1998-07-01

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