KR970032236A - Remote Control Preamplifier with Automatic Center Frequency Control of Filter - Google Patents

Remote Control Preamplifier with Automatic Center Frequency Control of Filter Download PDF

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Publication number
KR970032236A
KR970032236A KR1019950044298A KR19950044298A KR970032236A KR 970032236 A KR970032236 A KR 970032236A KR 1019950044298 A KR1019950044298 A KR 1019950044298A KR 19950044298 A KR19950044298 A KR 19950044298A KR 970032236 A KR970032236 A KR 970032236A
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KR
South Korea
Prior art keywords
signal
center frequency
output
filter
gain
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KR1019950044298A
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Korean (ko)
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KR0163923B1 (en
Inventor
박재호
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김광호
삼성전자 주식회사
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Priority to KR1019950044298A priority Critical patent/KR0163923B1/en
Publication of KR970032236A publication Critical patent/KR970032236A/en
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Publication of KR0163923B1 publication Critical patent/KR0163923B1/en

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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
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H03F3/08—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/0422—Frequency selective two-port networks using transconductance amplifiers, e.g. gmC filters
    • H03H11/0427—Filters using a single transconductance amplifier; Filters derived from a single transconductor filter, e.g. by element substitution, cascading, parallel connection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Networks Using Active Elements (AREA)
  • Optical Communication System (AREA)

Abstract

본 발명은 필터의 중심 주파수 자동 조정단을 갖는 원격 제어용 프리앰프에 관한 것으로, 광신호 입력 수단과, 상기 광신호 입력 수단을 통해 입력되는 미약한 전기적 신호를 증폭하고 신호이득을 증가시키는 증폭 수단과, 필터의 중심 주파수가 자동으로 제어될 수 있도록 설계된 필터링 수단과, 상기 필터링 수단으로부터 출력되는 신호의 이득을 증가시키고 마이컴으로 입력될 수 있는 일정한 펄스폭을 갖는 구형파 신호를 발생시켜 출력하는 출력 수단과, 상기 필터링 수단의 중심 주파수를 외부 핀을 사용하지 않고 자동적으로 조절할 수 있도록 위상 동기 루프를 형성함으로써, 트랜스콘덕턴스 제어 신호를 발생시켜 상기 필터링 수단으로 출력하는 중심 주파수 자동 조정 수단으로 구성되었으며, LPF 및 위상 비교기 등을 사용하여 위상 동기 루프를 구성하여, 원격 제어용 프리앰프에서 사용되는 BPF 및 BRF의 중심 주파수를 외부의 조정 핀을 사용하지 않고 자동적으로 조절할 수 있게한 필터의 중심 주파수자동 조정단을 갖는 원격제어용 프리앰프에 관한 것이다.The present invention relates to a remote control preamplifier having an automatic frequency adjustment stage of a filter, comprising: optical signal input means, amplification means for amplifying a weak electrical signal input through the optical signal input means and increasing signal gain; Filtering means designed to automatically control the center frequency of the filter, an output means for increasing the gain of the signal output from the filtering means and generating and outputting a square wave signal having a constant pulse width that can be input to the microcomputer; And a phase-locked loop configured to automatically adjust the center frequency of the filtering means without using an external pin, thereby generating a transconductance control signal and outputting the center frequency to the filtering means. And phase comparator, The present invention relates to a remote control preamplifier having a filter for automatically adjusting the center frequency of a filter which enables the center frequencies of BPFs and BRFs used in a remote control preamplifier to be automatically adjusted without using an external adjustment pin.

Description

필터의 중심 주파수 자동 조정단을 갖는 원격 제어용 프리앰프Remote Control Preamplifier with Automatic Center Frequency Control of Filter

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

제3도는 본 발명의 실시예에 따른 필터의 중심 주파수 자동 조정단을 갖는 원격 제어용 프리앰프의 전체 구성도이고,3 is an overall configuration diagram of a remote control preamplifier having a center frequency automatic adjustment stage of a filter according to an embodiment of the present invention.

제4도는 일반적인 대역 통과 필터(Band Pass Filter; 이하 BPF라 한다)의 내부 회로도이고,4 is an internal circuit diagram of a general band pass filter (hereinafter referred to as BPF).

제5도는 일반적인 대역 소거 필터(Band Reject Filter:이하 BRF라 한다)의 내부 회로도이고,5 is an internal circuit diagram of a general band reject filter (hereinafter referred to as BRF).

제6도는 일반적인 저역 통과 필터(Low Pass Filter; 이하 LPF라 한다)의 내 부회로도.6 is an internal circuit diagram of a general low pass filter (hereinafter referred to as LPF).

Claims (3)

원격 제어기로부터 출력되는 광신호를 입력받아 전기적 신호로 변화시키는 광신호 입력 수단과; 상기 광신호 입력 수단을 통해 입력되는 미약한 전기적 신호를 증폭하고 신호 이득을 증가시키는 증폭 수단과; 상기 증폭 수단으로부터 출력되는 신호를 입력받아, 상기 원격제어기의 반송 주파수에서 이득을 증가시키고 3-파장 형광등의 인버터 주파수에서 이득을 감소시키며, 트랜스콘덕턴스를 자동으로 조정하기 위한 제어 신호를 통해서 트랜스콘덕턴스가 조정되도록 함으로써 필터의 중심 주파수가 자동으로 제어될 수 있도록 설계된 필터링 수단과; 상기 필터링 수단으로부터 출력되는 신호의 이득을 증가시키고, 마이컴으로 입력될 수 있는 일정한 펄스폭을 갖는 구형파 신호를 발생시켜 출력하는 출력수단과; 상기 필터링 수단의 중심 주파수를 외부 핀을 사용하지 않고 자동적으로 조절할 수 있도록 위상 동기 루프를 형성함으로써, 트랜스콘덕턴스 제어 신호를 발생시켜 상기 필터링 수단으로 출력하는 중심 주파수 자동 조정 수단을 포함하여 이루어져 있는 것을 특징으로 하는 필터의 중심 주파수 자동 조정단을 갖는 원격 제어용 프리앰프.Optical signal input means for receiving an optical signal output from the remote controller and converting the optical signal into an electrical signal; Amplifying means for amplifying a weak electrical signal input through said optical signal input means and increasing a signal gain; Receives the signal output from the amplifying means, increases the gain at the carrier frequency of the remote controller, decreases the gain at the inverter frequency of a three-wavelength fluorescent lamp, and transconductor through a control signal for automatically adjusting the transconductance. Filtering means designed so that the center frequency of the filter can be automatically controlled by causing the tunance to be adjusted; Output means for increasing the gain of the signal output from the filtering means and generating and outputting a square wave signal having a constant pulse width that can be input to the microcomputer; And forming a phase locked loop to automatically adjust the center frequency of the filtering means without using an external pin, thereby generating a transconductance control signal and outputting the center frequency to the filtering means. A remote control preamplifier having a center frequency automatic adjustment stage of a filter. 제1항에 있어서, 상기 중심 주파수 자동 조정 수단은, 상기 증폭 수단의 출력 신호를 입력받아 저주파수 대역의 신호만을 통과시키며, -20dB의 이득을 갖는 주파수에서 -90°의 위상 지연특성을 갖는 LPF와; 상기 LPF의 출력 신호와 상기 증폭 수단의 출력 신호를 입력받아, 입력된 두 신호의 위상을 비교하여 두 신호의 위상 차이에 해당하는 오차 전압을 발생시키는 위상 비교기와; 상기 위상 비교기의 출력 신호를 필터링하기 위해 저항과 커패시터로 이루어진 루프 필터와; 상기 루프 필터의 출력 신호를 증폭시킴으로써 트랜스콘덕턴스 제어신호를 발생시켜 상기 각 필터(BPF, BRF, LPF)로 출력하는 루프증폭기를 포함하여 이루어져 있는 것을 특징으로 하는 필터의 중심 주파수 자동조정단을 갖는 원격 제어용 프리앰프.The method of claim 1, wherein the automatic adjustment of the center frequency, LPF having a phase delay characteristic of -90 ° at a frequency having a gain of -20dB, passing only the signal of the low frequency band by receiving the output signal of the amplifying means; ; A phase comparator that receives the output signal of the LPF and the output signal of the amplifying means, and compares phases of the two input signals to generate an error voltage corresponding to a phase difference between the two signals; A loop filter comprising a resistor and a capacitor for filtering the output signal of the phase comparator; And a loop amplifier for generating a transconductance control signal by amplifying the output signal of the loop filter and outputting the transconductance control signal to the respective filters (BPF, BRF, LPF). Preamp for remote control. 제1항 또는 제2항에 있어서, 상기 위상 비교기의 출력 단자와 상기 루프 증폭기의 입력 단자사이에, 상기 출력 수단의 최종 출력 신호를 통해 온/오프되는 스위치가 더 포함되는 것을 특징으로 하는 필터의 중심 주파수 자동 조정단을 갖는 원격 제어용 프리앰프.3. A filter according to claim 1 or 2, further comprising a switch which is switched on / off via the final output signal of the output means between the output terminal of the phase comparator and the input terminal of the loop amplifier. Remote control preamplifier with center frequency automatic adjustment stage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950044298A 1995-11-28 1995-11-28 Remote control preamp with center frequency automatic control of filter KR0163923B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950044298A KR0163923B1 (en) 1995-11-28 1995-11-28 Remote control preamp with center frequency automatic control of filter

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Application Number Priority Date Filing Date Title
KR1019950044298A KR0163923B1 (en) 1995-11-28 1995-11-28 Remote control preamp with center frequency automatic control of filter

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KR970032236A true KR970032236A (en) 1997-06-26
KR0163923B1 KR0163923B1 (en) 1998-12-01

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KR100449237B1 (en) * 2002-01-29 2004-09-18 실리콤텍(주) Infrared remote control receiving system and method for controlling the center frequency of a filter

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