KR950010333A - Envelope detection method of amplitude modulated wave and device - Google Patents

Envelope detection method of amplitude modulated wave and device Download PDF

Info

Publication number
KR950010333A
KR950010333A KR1019930017644A KR930017644A KR950010333A KR 950010333 A KR950010333 A KR 950010333A KR 1019930017644 A KR1019930017644 A KR 1019930017644A KR 930017644 A KR930017644 A KR 930017644A KR 950010333 A KR950010333 A KR 950010333A
Authority
KR
South Korea
Prior art keywords
pulse
modulated wave
modulated
generating
envelope
Prior art date
Application number
KR1019930017644A
Other languages
Korean (ko)
Other versions
KR960003563B1 (en
Inventor
김종철
Original Assignee
이민화
주식회사 메디슨
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.)
Filing date
Publication date
Application filed by 이민화, 주식회사 메디슨 filed Critical 이민화
Priority to KR1019930017644A priority Critical patent/KR960003563B1/en
Publication of KR950010333A publication Critical patent/KR950010333A/en
Application granted granted Critical
Publication of KR960003563B1 publication Critical patent/KR960003563B1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/14—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles
    • H03D1/18—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/02—Details

Abstract

본 발명은 진폭변조된 변조파로 부터 포락선을 검출하는 방법 및 장치에 관한 것으로, 특히 변조지수 I로 진폭변조된 변조파의 경우에도 임의 시간 지연된 변조파에 동기된 형태의 파형을 발생함으로써, 변조시에 발생되는 역상으로 인한 포락선 검출의 오차를 방지하여 보다 용이하게 포락선 검파를 할 수 있는 진폭변조파의 포락선 검출방법 및 그 장치에 관한 것이다.The present invention relates to a method and apparatus for detecting an envelope from an amplitude modulated modulated wave. In particular, in the case of a modulated wave modulated with an modulation index I, a waveform of a type synchronized with an arbitrary time delayed modulated wave is generated. The present invention relates to a method for detecting an envelope of an amplitude modulated wave and an apparatus thereof to prevent an error in envelope detection due to an inverse phase generated in the circuit.

Description

진폭변조파의 포락선 검출방법 및 그 장치Envelope detection method of amplitude modulated wave and device

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

제1도는 본 발명에 따른 진폭변조파의 포락선 검출장치에 대한 일실시예를 나타내는 블록도.1 is a block diagram showing an embodiment of an apparatus for detecting an envelope of an amplitude modulated wave according to the present invention.

Claims (3)

진폭변조된 변조파로부터 포락선 검출하는 장치에 있어서, 상기 변조파의 크기가 영이 되는 순간마다 펄스를 발생하는 영교차점검출수단 ; 상기 변조파의 기준반송파와 같은 주기를 가지는 펄스를 발생하는발진수단 ; 상기 발진수단으로부터 발생된 신호를 상기 영교차점검출수단로부터 발생된 펄스에 동기시켜서 출력하는 위상보정보수단 ; 상기 위상보정수단으로부터 출력되는 신호와 상기 변조파를 곱셈연산하여 출력하는 곱셈기 ; 및 상기 곱셈기로부터 츨력되는 신호의 저주파대역만 필터링하여 출력하는 저역통과필터를 포함하는 진폭변조파의 포락선 검출장치An apparatus for detecting an envelope from an amplitude-modulated modulated wave, comprising: zero crossing point detecting means for generating a pulse every time the magnitude of the modulated wave becomes zero; Oscillating means for generating a pulse having the same period as the reference carrier of the modulated wave; Phase compensation information means for outputting the signal generated from said oscillation means in synchronization with the pulse generated from said zero crossing point detection means; A multiplier for multiplying and outputting the signal output from the phase correction means and the modulation wave; And a low pass filter for filtering and outputting only the low frequency band of the signal output from the multiplier. 제1항에 있어서 ,상기 위상보정수단은 D플립플롭으로 구성되어, 상기 발진수단의 출력을 입력으로 인가받고, 상기 영교차점검출수단의 출력을 클럭입력으로 인가받는 것을 특징으로 하는 진폭변조파의 포락선 검출장치.The amplitude modulating wave according to claim 1, wherein the phase correction means is configured as a D flip-flop, and the output of the oscillation means is applied as an input, and the output of the zero cross point detection means is applied as a clock input. Envelope Detection Device. 진폭변조된 변조파로부터 포락선을 검출하는 방법에 있어서, 상기 변조파의 크기가 영이 되는 순간마다 펄스를 발생하는 제1펄스발생단계 ; 상기 변조파의 기준반송파와 같은 주기를 가지는 펄스를 발생하는 제2펄스발생단계 ; 상기 제2펄스발생단계에 의해 발생된 펄스를 상기 제1펄스발생 단계에 의해 발생된 펄스에 동기시키는 단계 ; 동기된 펄스와 상기 변조파를 곱셈연산하는 단계 ; 및 상기 곱셈연산한 신호의 저주파대역만을 필터링하는 단계를 포함하는 진폭변조파의 포락선 검출장치.A method for detecting an envelope from an amplitude modulated modulated wave, comprising: a first pulse generating step of generating a pulse every time a magnitude of the modulated wave becomes zero; A second pulse generation step of generating a pulse having a period equal to a reference carrier of the modulated wave; Synchronizing a pulse generated by the second pulse generating step with a pulse generated by the first pulse generating step; Multiplying the synchronized pulses with the modulated wave; And filtering only a low frequency band of the multiply signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930017644A 1993-09-03 1993-09-03 Envelope detection device KR960003563B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930017644A KR960003563B1 (en) 1993-09-03 1993-09-03 Envelope detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930017644A KR960003563B1 (en) 1993-09-03 1993-09-03 Envelope detection device

Publications (2)

Publication Number Publication Date
KR950010333A true KR950010333A (en) 1995-04-28
KR960003563B1 KR960003563B1 (en) 1996-03-15

Family

ID=19362847

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930017644A KR960003563B1 (en) 1993-09-03 1993-09-03 Envelope detection device

Country Status (1)

Country Link
KR (1) KR960003563B1 (en)

Also Published As

Publication number Publication date
KR960003563B1 (en) 1996-03-15

Similar Documents

Publication Publication Date Title
KR840008089A (en) PWM pulse generator
KR970056081A (en) Synchronous Polarization and Phase Modulation Apparatus and Method Using Periodic Waveforms
KR850002708A (en) Apparatus and method for frequency modulating a telecommunication carrier with a baseband signal
KR900019417A (en) Spread Spectrum Demodulation Circuit
KR890001296A (en) Device to synchronize input clock and output pulse of circuit
ATE198966T1 (en) REDUCING OSCILLATOR CAUSE INTERFERENCE IN ELECTRONIC DEVICES
KR920700490A (en) FM modulator
JPH1022799A (en) Phase detection circuit
US4110834A (en) Method and circuit arrangement for the multiplication of electrical signals
KR970701952A (en) Circuit and method for generating accurate guadrature signals
KR950010333A (en) Envelope detection method of amplitude modulated wave and device
KR910003912A (en) Frequency modulator
KR920015752A (en) Method and apparatus for generating clock signal from biphasic modulation digital signal
KR950030638A (en) Carrier Recovery Device Using Frequency and Phase Synchronization Loop
KR890007564A (en) Line synchronization circuit
KR970024510A (en) Delayed FM Demodulation Circuit
JP4259228B2 (en) Communication system transponder
KR950016217A (en) Clock signal generator
SU1483666A1 (en) Synchronous detector of phase-shift-keyed signals
RU2141170C1 (en) Radio signal generator with minimal frequency keying
KR900011137A (en) Filter device and method for digital modulator
KR940017107A (en) Digital frequency modulator
SU663098A1 (en) Amplitude modulator with digital control
KR940012090A (en) Clock divider
SU692068A1 (en) Gate-type phase detector

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20010314

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee