KR960030267A - High frequency rejection filter with variable rejection band - Google Patents

High frequency rejection filter with variable rejection band Download PDF

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Publication number
KR960030267A
KR960030267A KR1019950000933A KR19950000933A KR960030267A KR 960030267 A KR960030267 A KR 960030267A KR 1019950000933 A KR1019950000933 A KR 1019950000933A KR 19950000933 A KR19950000933 A KR 19950000933A KR 960030267 A KR960030267 A KR 960030267A
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KR
South Korea
Prior art keywords
high frequency
filter
variable
inductor
capacitor
Prior art date
Application number
KR1019950000933A
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Korean (ko)
Other versions
KR100298881B1 (en
Inventor
김창식
Original Assignee
이형도
삼성전기 주식회사
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Publication date
Application filed by 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019950000933A priority Critical patent/KR100298881B1/en
Publication of KR960030267A publication Critical patent/KR960030267A/en
Application granted granted Critical
Publication of KR100298881B1 publication Critical patent/KR100298881B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0138—Electrical filters or coupling circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters And Equalizers (AREA)

Abstract

본 발명은 전자기기에서 전자파 방해를 차단하기 위해 사용되는 고주파제거필터에 관한 것으로, 특히, 상기 고주파제거필터에서 차단주파수를 결정하는 콘덴서의 커패시턴스를 딥스위치로 가변시키거나, 또는 코일의 인덕턴스를 조정단자로 가변할 수 있도록 함으로써, 고주파 제거대역을 임의로 조정하여 전자기기를 사용하는 환경에 적절히 대처할 수 있는 제거대역 가변기능을 갖는 고주파제거필터에 관한 것이다.The present invention relates to a high frequency elimination filter used to block electromagnetic interference in an electronic device. In particular, the capacitance of a capacitor that determines a cutoff frequency in the high frequency elimination filter is varied by a dip switch, or an inductance of a coil is adjusted. The present invention relates to a high frequency rejection filter having a variable elimination band function capable of appropriately coping with an environment using electronic devices by arbitrarily adjusting the high frequency rejection band by allowing the terminal to be variable.

본 발명의 기술적인 수단은 입/출력단자간에 직렬접속되는 인덕터와 상기 인덕터에 병렬접속되는 커패시터로 이루어진 π형 고주파제거필터에 있어서, 상기 커패시터의 커패시턴스를 가변시킬 수 있도록 딥스위치를 실장한 것을 특징으로 한다.Technical means of the present invention is a π-type high frequency rejection filter composed of an inductor connected in series between the input and output terminals and a capacitor connected in parallel to the inductor, characterized in that a dip switch is mounted to vary the capacitance of the capacitor. It is done.

Description

제거대역 가변기능을 갖는 고주파제거필터High frequency rejection filter with variable rejection band

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

제도2(가)는 본 발명에 따른 제1실시예를 보이는 고주파제거필터의 외형도, (나)는 본 발명에 따른 필터의 내부구조도, (다)는 등가회로도.Drawing 2 (a) is an external view of a high frequency elimination filter showing a first embodiment according to the present invention, (b) is an internal structure diagram of the filter according to the present invention, (c) is an equivalent circuit diagram.

Claims (3)

입/출력단자간에 직렬접속되는 인덕터와 상기 인덕터에 병렬접속되는 커패시터로 이루어진 π형 고주파제거필터에 있어서, 상기 커패시터의 커패시턴스를 가변시킬 수 있도록 딥스위치를 실장한 것을 특징으로 하는 제거대역 가변기능을 갖는 고주파제거필터.A π-type high frequency elimination filter comprising an inductor connected in series between an input / output terminal and a capacitor connected in parallel with the inductor, wherein the dip band variable function is provided so as to change the capacitance of the capacitor. Having high frequency elimination filter. 제1항에 있어서, 상기 인덕터는 페라이트코어로 이루어짐을 특징으로 하는 제거대역 가변기능을 갖는 고주파제거필터.The high frequency rejection filter of claim 1, wherein the inductor is made of a ferrite core. 제1항에 있어서, 상기 인덕터는 가변코일로 이루어짐을 특징으로 하는 제거대역 가변기능을 갖는 고주파제거필터.2. The high frequency rejection filter of claim 1, wherein the inductor is made of a variable coil. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950000933A 1995-01-20 1995-01-20 High-frequency filter having variable elimination band function KR100298881B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950000933A KR100298881B1 (en) 1995-01-20 1995-01-20 High-frequency filter having variable elimination band function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950000933A KR100298881B1 (en) 1995-01-20 1995-01-20 High-frequency filter having variable elimination band function

Publications (2)

Publication Number Publication Date
KR960030267A true KR960030267A (en) 1996-08-17
KR100298881B1 KR100298881B1 (en) 2001-10-22

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ID=37528602

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950000933A KR100298881B1 (en) 1995-01-20 1995-01-20 High-frequency filter having variable elimination band function

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KR (1) KR100298881B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020097394A (en) * 2001-06-20 2002-12-31 여상근 xDSL Service High Frequency (30KHz equal then bandwidth) Noise damage prevention
KR101053332B1 (en) * 2010-07-14 2011-08-01 삼성전기주식회사 Rf receiver with improved removal performance of interference wave

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102083096B1 (en) * 2018-09-27 2020-02-28 정영철 EMP filter with adjustable characteristic frequencies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020097394A (en) * 2001-06-20 2002-12-31 여상근 xDSL Service High Frequency (30KHz equal then bandwidth) Noise damage prevention
KR101053332B1 (en) * 2010-07-14 2011-08-01 삼성전기주식회사 Rf receiver with improved removal performance of interference wave

Also Published As

Publication number Publication date
KR100298881B1 (en) 2001-10-22

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