KR940018670A - Variable filtering device of receiver - Google Patents

Variable filtering device of receiver Download PDF

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Publication number
KR940018670A
KR940018670A KR1019930000071A KR930000071A KR940018670A KR 940018670 A KR940018670 A KR 940018670A KR 1019930000071 A KR1019930000071 A KR 1019930000071A KR 930000071 A KR930000071 A KR 930000071A KR 940018670 A KR940018670 A KR 940018670A
Authority
KR
South Korea
Prior art keywords
signal
filtering
frequency
switched capacitor
filtering device
Prior art date
Application number
KR1019930000071A
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Korean (ko)
Other versions
KR100248043B1 (en
Inventor
김정희
Original Assignee
정용문
삼성전자 주식회사
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Priority to KR1019930000071A priority Critical patent/KR100248043B1/en
Publication of KR940018670A publication Critical patent/KR940018670A/en
Application granted granted Critical
Publication of KR100248043B1 publication Critical patent/KR100248043B1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Noise Elimination (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

본 발명은 레이다 등의 수신기의 가변 필터링장치에 관한 것으로, 수동소자로 구성되는 저역 통과 필터를 대신하여 입력신호에 따라 능동적으로 변하는 스위치드 커패시터 필터(Switched Capacitor Filter)를 사용하여 변화된 주파수에 대응되는 필터링을 가능하게 하여 노이즈 없는 최적의 신호를 얻기위한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable filtering device of a receiver such as a radar, and to a filter corresponding to a changed frequency by using a switched capacitor filter which is actively changed according to an input signal instead of a low pass filter composed of passive elements. This is to enable an optimal signal without noise.

Description

수신기의 가변 필터링장치Variable filtering device of receiver

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

제 2 도는 본 발명의 수신장치의 블럭도, 제 3 도은 스위치드 커패시터 필터의 구성도, 제 4 도는 스위치드 커패시터 필터를 구동하는 클럭의 타이밍도.2 is a block diagram of a receiving apparatus of the present invention, FIG. 3 is a configuration diagram of a switched capacitor filter, and FIG. 4 is a timing diagram of a clock for driving the switched capacitor filter.

Claims (3)

수신입력되는 신호를 대역 통과 필터를 거쳐 중간 주파수 대역의 신호로 형성하고 상기 중간 주파수 대역의 신호를 I 및 Q채널에 제1, 제 2 신호 혼합기를 이용하여 중간주파수 성분을 제거한 후 저역 통과 필터처리를 하는 방법으로 신호를 처리하는 수신장치에 있어서, 상기 제1, 제 2 신호 혼합기로 부터 공급되는 신호의 주파수에 대응하여 신호를 필터링하기 위한 제 1, 제 2 스위치드 커패시터 필터; 상기 제1, 제 2 스위치드 커패시터 필터 내부의 두 스위칭소자를 교변적으로 구동하기 위한 반주기의 차를 갖는 클럭을 형성하는 클럭발진기; 및 상기 출력되는 신호를 검출하여 이에 대응되는 필터링을 위한 클럭주파수를 결정하고 이에 따라 상기 클럭발진기를 제어하는 클럭제어수단을 구비하여 변화된 주파수에 대응되는 필터링이 가능하게 하는 것을 특징으로 하는 수신기의 가변 필터링장치.The received input signal is formed into a signal of an intermediate frequency band through a band pass filter, and the intermediate frequency component is removed from the I and Q channels by using the first and second signal mixers in the I and Q channels, and then the low pass filter process. A receiving apparatus for processing a signal by a method comprising: first and second switched capacitor filters for filtering a signal corresponding to a frequency of a signal supplied from the first and second signal mixers; A clock oscillator forming a clock having a half cycle difference for symmetrically driving two switching elements in the first and second switched capacitor filters; And a clock control means for detecting the output signal, determining a clock frequency for filtering corresponding thereto, and controlling the clock oscillator accordingly to enable filtering corresponding to the changed frequency. Filtering device. 제 1 항에 있어서, 상기 제1, 제2 스위치드 커패시터 필터는 상기 제1, 제 2 신호 혼합기로 부터 공급되는 신호의 주파수에 대응되는 복수의 필터로 구성하여, 변화된 주파수에 대응되는 필터를 선택하여 필터링 가능한 것을 특징으로 하는 수신기의 가변 필터링장치.The method of claim 1, wherein the first and second switched capacitor filter is composed of a plurality of filters corresponding to the frequency of the signal supplied from the first and second signal mixer, to select a filter corresponding to the changed frequency Variable filtering device of a receiver, characterized in that the filtering possible. 제 1 항 또는 제 2 항에 있어서, 상기 제1, 제 2 스위치드 커패시터 필터는 프로그램 가능한 필터로 구성하여 제1, 제 2 신호 혼합기로 부터 공급되는 신호의 주파수에 대응되는 필터링을 가능하게 하는 것을 특징으로 하는 수신기의 가변 필터링장치.3. The method of claim 1 or 2, wherein the first and second switched capacitor filters are configured as programmable filters to enable filtering corresponding to the frequencies of the signals supplied from the first and second signal mixers. Variable filtering device of the receiver. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930000071A 1993-01-06 1993-01-06 Receiver variable filtering device KR100248043B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930000071A KR100248043B1 (en) 1993-01-06 1993-01-06 Receiver variable filtering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930000071A KR100248043B1 (en) 1993-01-06 1993-01-06 Receiver variable filtering device

Publications (2)

Publication Number Publication Date
KR940018670A true KR940018670A (en) 1994-08-18
KR100248043B1 KR100248043B1 (en) 2000-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930000071A KR100248043B1 (en) 1993-01-06 1993-01-06 Receiver variable filtering device

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KR (1) KR100248043B1 (en)

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Publication number Publication date
KR100248043B1 (en) 2000-03-15

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