KR960027510A - Linear Low Power Downconverter in Mobile Communications Devices - Google Patents

Linear Low Power Downconverter in Mobile Communications Devices Download PDF

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Publication number
KR960027510A
KR960027510A KR1019940034441A KR19940034441A KR960027510A KR 960027510 A KR960027510 A KR 960027510A KR 1019940034441 A KR1019940034441 A KR 1019940034441A KR 19940034441 A KR19940034441 A KR 19940034441A KR 960027510 A KR960027510 A KR 960027510A
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KR
South Korea
Prior art keywords
signal
intermediate frequency
local oscillation
output
oscillation signal
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Application number
KR1019940034441A
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Korean (ko)
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KR970008176B1 (en
Inventor
이요원
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구자홍
Lg 전자주식회사
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Priority to KR1019940034441A priority Critical patent/KR970008176B1/en
Publication of KR960027510A publication Critical patent/KR960027510A/en
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Publication of KR970008176B1 publication Critical patent/KR970008176B1/en

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    • 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
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3205—Modifications of amplifiers to reduce non-linear distortion in field-effect transistor amplifiers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Transceivers (AREA)

Abstract

본 발명은 이동통신기기의 선형 저전력 다운컨버터에 관한 것으로서, 종래 비선형 설계에서 저전력 다운컨버터를 설계할 경우 복잡하고 회로 설계시 많은 소요시간이 소요되었던 문제점을 해결하기 위해 고주파신호와 국부발진신호를 싱글-톤 입력으로 받아 정합하는 고주파 및 국부발진신호 정합부와, 고주파 및 국부발진신호 정합부로부터 출력된 중간주파신호에서 국부발진신호의 출력잡음지수를 낮추어 트랜지스터의 게이트에 인가하는 잡음제거부, 잡음제거부에서 잡음이 제거된 고주파신호와 국부발진신호 상호간의 간섭이나 영향을 최대로 줄이기 위해 트랜지스터의 드레인에 접속되어 상대적으로 신호의 세기가 큰 국부발진신호를 중간주파신호로 출력하기 전에 제거되는 필터부, 필터부를 통해 출력된 신호의 감쇠를 크게 하여 수신감도를 증대시키는 감쇠부로 구성된 선형 중간주파증폭부와, 선형 중간주파증폭부의 필터부를 통과한 중간주파출력신호를 최대로 전달하기 위해 정합하는 중간주파출력 정합부로 구성된 선형 저전력 다운컨버터를 제공함으로써 간단한 선형 데이타 성분으로 설계할 수 있을 뿐만 아니라 단시간에 회로를 완성할 수 있는 잇점이 있다.The present invention relates to a linear low power downconverter of a mobile communication device. In order to solve the problem of designing a low power downconverter in a conventional nonlinear design, which is complicated and takes much time in circuit design, a single high frequency signal and a local oscillation signal are used. -Noise canceling unit and noise applied to the gate of transistor by lowering the output noise index of local oscillation signal from the high frequency and local oscillation signal matching unit to receive and match the tone input and the intermediate frequency signal output from the high frequency and local oscillation signal matching unit. Filter that is removed before outputting local oscillation signal with large signal strength as intermediate frequency signal, which is connected to drain of transistor to minimize interference or influence between noise-removed high frequency signal and local oscillation signal at maximum Receive sensitivity by increasing attenuation of the signal output through the filter unit Simple linear data components by providing a linear low power downconverter consisting of a linear intermediate frequency amplifier composed of an attenuating section which is amplified and an intermediate frequency output matched section for maximum transmission of the intermediate frequency output signal passing through the filter section of the linear intermediate frequency amplifier. Not only can it be designed, but the circuit can be completed in a short time.

Description

이동통신기기의 선형 저전력 다운컨버터Linear Low Power Downconverter in Mobile Communications Devices

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

제 5 도는 본 발명에 따른 선형 저전력 다운컨버터의 블록 구성도, 제 6 도는 제 5 도의 상세 회로 구성도.5 is a block diagram of a linear low power down converter according to the present invention, and FIG. 6 is a detailed circuit diagram of FIG.

Claims (3)

고주파(RF)신호와 국부발진(LO)신호를 싱글-톤 입력으로 받아 정합하는 고주파 및 국부발진신호 정합부(30)와, 상기 고주파 및 국부발진신호 정합부(30)로부터 출력된 중간주파신호에서 국부발진신호의 출력 잡음지수를 낮추어 트랜지스터(FET1)의 게이트에 인가하는 잡음제거부(41), 상기 잡음제거부(41)에서 잡음이 제거된 고주파신호와 국부발진신호 상호간의 간섭이나 영향을 최대로 줄이기 위해 상기 트랜지스터(FET1)의 드레인에 접속되어 상대적으로 신호의 세기가 큰 국부발진신호를 중간주파신호로 출력하기 전에 제거하는 필터부(42), 상기 필터부(42)를 통해 출력된 신호의 감소를 크게 하여 수신감도를 증대시키는 감쇠부(43)를 포함하는 선형 중간주파 증폭부(40)와, 상기 선형 중간주파 증폭부(40)의 필터부(42)를 통과한 중간주파출력신호를 최대로 전달하기 위해 정합하는 중간주파출력 정합부(50)로 구성된 것을 특징으로 하는 이동통신기기의 선형 저전력 다운컨버터.A high frequency and local oscillation signal matching unit 30 for receiving a high frequency (RF) signal and a local oscillation (LO) signal as a single-tone input, and an intermediate frequency signal output from the high frequency and local oscillation signal matching unit 30. Reduces the output noise index of the local oscillation signal at the noise canceller 41 and applies it to the gate of the transistor FET1, and the interference or influence between the high frequency signal from which the noise is removed from the noise canceller 41 and the local oscillator signal Filter portion 42 and output through the filter portion 42, which are connected to the drain of the transistor FET1 to remove the local oscillation signal having a relatively high signal intensity before outputting the intermediate frequency signal, The intermediate frequency output passed through the linear intermediate frequency amplification unit 40 including the attenuation unit 43 which increases the signal reduction and increases the reception sensitivity, and the filter unit 42 of the linear intermediate frequency amplifying unit 40. Full signal Linear low-power down converter of the mobile communication device, characterized in that consisting of an intermediate frequency output matching unit 50 to match. 제 1 항에 있어서, 상기 고주파 및 국부발진신호 정합부(30)에는 직렬공진시 임피던스를 최소로 되게 고조파를 접지로 바이패스시켜 제거하는 제 1 단락공진부(31)가 부가되는 것을 특징으로 하는 이동통신기기의 선형 저전력 다운컨버터.2. The high frequency and local oscillation signal matching section 30 is provided with a first short circuit resonator 31 for bypassing and removing harmonics to ground to minimize impedance during series resonance. Linear low power downconverter in mobile communication devices. 제 1 항에 있어서, 상기 중간주파출력 정합부(50)에는 상기 중간주파출력 정합부(50)로부터 출력된 중간주파신호에서의 고조파를 접지로 바이패스시켜 제거하는 제2단락공진부(51)와 이 중간주파신호에서 불필요한 부분을 재차 제거하는 단락공진부(52)가 부가된 것을 특징으로 하는 이동통신기기의 선형 저전력 다운컨버터.The second short circuit resonator 51 of claim 1, wherein the intermediate frequency output matching unit 50 bypasses and removes harmonics in the intermediate frequency signal output from the intermediate frequency output matching unit 50 to ground. And a short circuit resonator unit (52) for removing unnecessary portions from the intermediate frequency signal again. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940034441A 1994-12-15 1994-12-15 Down converter for mobile telecom KR970008176B1 (en)

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KR1019940034441A KR970008176B1 (en) 1994-12-15 1994-12-15 Down converter for mobile telecom

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KR970008176B1 KR970008176B1 (en) 1997-05-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100292674B1 (en) * 1998-01-12 2001-06-15 가타오카 마사타카 Receiver for transmitting data

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100585169B1 (en) 2004-12-23 2006-06-02 삼성전자주식회사 Layout of semiconductor memory device and method of controlling capacitance of dummy cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100292674B1 (en) * 1998-01-12 2001-06-15 가타오카 마사타카 Receiver for transmitting data

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