KR970055687A - Intermediate Frequency Generation Circuit of Wireless Communication System - Google Patents

Intermediate Frequency Generation Circuit of Wireless Communication System Download PDF

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Publication number
KR970055687A
KR970055687A KR1019950047103A KR19950047103A KR970055687A KR 970055687 A KR970055687 A KR 970055687A KR 1019950047103 A KR1019950047103 A KR 1019950047103A KR 19950047103 A KR19950047103 A KR 19950047103A KR 970055687 A KR970055687 A KR 970055687A
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KR
South Korea
Prior art keywords
frequency signal
radio frequency
intermediate frequency
phase
signal
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KR1019950047103A
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Korean (ko)
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KR0150143B1 (en
Inventor
김형주
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김광호
삼성전자 주식회사
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Priority to KR1019950047103A priority Critical patent/KR0150143B1/en
Publication of KR970055687A publication Critical patent/KR970055687A/en
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Publication of KR0150143B1 publication Critical patent/KR0150143B1/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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

무선통신시스템의 중간주파수 발생회로에 관한 것이다.An intermediate frequency generating circuit of a wireless communication system.

2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention

본 발명은 무선주파신호와 국부신호를 혼합하여 중간주파수로 변환시 발생되는 스퓨리어스 성분을 제거한 뒤 순수한 중간주파수를 발생한다.The present invention generates a pure intermediate frequency after mixing the radio frequency signal and the local signal to remove the spurious components generated when the conversion to the intermediate frequency.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

안테나로부터 수신된 무선주파신호를 증폭하는 무선증폭기와 : 상기 무선증폭수단에서 증폭된 무선주파신호의 전력레벨을 1/2로 나누고 이에 대한 위상이 90° 천이된 제1무선주파신호와 위상이 변하지 않은 제2무선 주파신호로 변환하는 전력분배기와 : 상기 제1무선주파신호의 주파수를 2배 체배하여 제3무선주파신호로 출력하는 주파수체배기와 : 상기 제3무선주파신호의 전력레벨을 전력감쇄량 만큼 감소시켜 제4무선주파신호로 출력하는 전력제어감쇄기와 : 상기 제4무선주파신호에 포함되어 있는 2차 고조파만을 통화시켜 제5무선주파신호로 출력하는 제1대역통과필터와 : 상기 제5무선주파신호의 위상을 위상변환값에 따라 변화시켜 제6무선주파신호로 출력하는 위상조정기와 : 국부신호를 발생하는 국부발진기와 : 상기 제2무선주파신호와 국부신호를 입력하여 혼합하여 제1중간주파신호를 발생하는 혼합기와 : 상기 제1중간주파신호에 포함되어 있는 고조파성분을 제거하고 제2중간주파신호를 발생하는 제2대역통과필터와 : 상기 제6무선주파신호의 위상을 90°만큼 천이하고 상기 중간주파신호를 혼합하여 중간주파수를 발생하는 전력혼합기로 구성하여 해결한다.A wireless amplifier for amplifying the radio frequency signal received from the antenna: dividing the power level of the amplified radio frequency signal by the amplification means by 1/2 and the phase does not change with the first radio frequency signal shifted phase by 90 degrees A power divider for converting a second wireless frequency signal into a second wireless frequency signal; and a frequency multiplier for multiplying a frequency of the first wireless frequency signal to output a third wireless frequency signal: a power reduction amount of the power level of the third wireless frequency signal And a power control attenuator reducing the output signal as a fourth radio frequency signal, and outputting the fourth radio frequency signal. The first bandpass filter transmits only the second harmonic included in the fourth radio frequency signal and outputs the fifth radio frequency signal. A phase adjuster for changing a phase of a radio frequency signal according to a phase shift value and outputting the sixth radio frequency signal; a local oscillator for generating a local signal; and the second radio frequency signal and a local part. A mixer for generating a first intermediate frequency signal by mixing an arc; and a second band pass filter for removing a harmonic component included in the first intermediate frequency signal and generating a second intermediate frequency signal. The phase of the radio frequency signal is shifted by 90 °, and the intermediate frequency signal is mixed to form a power mixer that generates an intermediate frequency.

4. 발명의 중요한 용도4. Important uses of the invention

무선통신시스템의 중간주파수 발생에 이용된다.Used to generate intermediate frequency of wireless communication system.

Description

무선통신시스템의 중간주파수 발생회로Intermediate Frequency Generation Circuit of Wireless Communication System

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 무선통신시스템의 중간주파수 발생회로를 나타내는 블럭 구성도.2 is a block diagram showing an intermediate frequency generation circuit of a wireless communication system according to the present invention.

Claims (3)

무선통신시스템의 중간주파수 발생회로에 있어서 : 안테나로부터 수신된 무선주파신호를 증폭하는 무선증폭기와 : 상기 무선증폭수단에서 증폭된 무선주파신호의 전격레벨을 1/2로 나누고 이에 대한 위상이 90°천이된 제1무선주파신호와 위상이 변하지 않은 제2무선주파신호로 변환하는 전력분배기와: 상기 제1무선주파신호의 주파수를 2배 체배하여 제3무선주파신호로 출력하는 주파수체배기와 : 상기 제3무선주파신호의 전력레벨을 전력감쇄량 만큼 감소시켜 제4무선주파신호로 출력하는 전력제어감쇄기와 : 상기 제4무선주파신호에 포함되어 있는 2차 고조파만을 통과시켜 제5무선주파신호로 출력하는 제1대역통과필터와 : 상기 제5무선주파신호의 위상을 위상변환값에 따라 변화시켜 제6무선주파신호로 출력하는 위상조정기와 : 국부신호를 발생하는 국부발진기와 : 상기 제2무선주파신호와 국부신호를 입력하여 혼합한 뒤 제1중간주파신호를 발생하는 혼합기와 : 상기 제1중간주파신호에 포함되어 있는 고조파성분을 제거하고 제2중간주파신호를 발생하는 제2대역통과필터와 : 상기 제6무선주파신호의 위상을 90°만큼 천이하고 상기 중간주파 신호를 혼합하여 중간주파수를 발생하는 전력혼합기로 이루어짐을 특징으로 하는 중간주파수 발생회로.An intermediate frequency generating circuit of a wireless communication system, comprising: a wireless amplifier for amplifying a radio frequency signal received from an antenna; and a dividing electric shock level of the amplified radio frequency signal by the amplification means by 1/2 and having a phase of 90 °. A power divider for converting the transitioned first radio frequency signal and a second radio frequency signal whose phase does not change: a frequency multiplier for multiplying the frequency of the first radio frequency signal and outputting the result as a third radio frequency signal; A power control attenuator for reducing the power level of the third radio frequency signal by the amount of power attenuation and outputting the fourth radio frequency signal: outputting the second radio frequency signal as a fifth radio frequency signal by passing only the second harmonics included in the fourth radio frequency signal A first band pass filter and a phase adjuster for changing a phase of the fifth radio frequency signal according to a phase shift value and outputting the sixth radio frequency signal to generate a local signal. A local oscillator and a mixer for generating a first intermediate frequency signal after mixing and mixing the second radio frequency signal and a local signal, and removing the harmonic components included in the first intermediate frequency signal. And a second band pass filter for generating a signal and a power mixer for shifting the phase of the sixth radio frequency signal by 90 ° and mixing the intermediate frequency signal to generate an intermediate frequency. 제1항에 있어서, 상기 전력제어감쇄기가 상기 전력혼합기의 출력단에 연결되어 전력제어감소량을 상기 제2중간주파신호의 전력레벨과 같게 변화시킴을 특징으로 하는 중간주파수 발생회로.The intermediate frequency generating circuit of claim 1, wherein the power control attenuator is connected to an output terminal of the power mixer to change the amount of power control reduction to be equal to the power level of the second intermediate frequency signal. 제1항에 있어서, 상기 위상조정기가 상기 전력혼합기의 출력단에 연결되어 위상변환값을 상기 제2중간주파신호의 위상값과 같게 변화시킴을 특징으로 하는 중간주파수 발생회로.The intermediate frequency generator circuit of claim 1, wherein the phase adjuster is connected to an output terminal of the power mixer to change a phase shift value to be equal to a phase value of the second intermediate frequency signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950047103A 1995-12-06 1995-12-06 If frequency generating circuit in radio communication system KR0150143B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950047103A KR0150143B1 (en) 1995-12-06 1995-12-06 If frequency generating circuit in radio communication system

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Application Number Priority Date Filing Date Title
KR1019950047103A KR0150143B1 (en) 1995-12-06 1995-12-06 If frequency generating circuit in radio communication system

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KR970055687A true KR970055687A (en) 1997-07-31
KR0150143B1 KR0150143B1 (en) 1998-11-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100463648B1 (en) * 1997-12-10 2005-04-06 주식회사 팬택앤큐리텔 Intermediate frequency test signal generator of wireless subscriber network system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102019082B1 (en) * 2018-10-08 2019-09-06 (주)엑스엠더블유 Four Channel Precise Phase Control Apparatus for mmWave Beamforming

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100463648B1 (en) * 1997-12-10 2005-04-06 주식회사 팬택앤큐리텔 Intermediate frequency test signal generator of wireless subscriber network system

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