KR100934905B1 - 저주파 안테나 - Google Patents
저주파 안테나 Download PDFInfo
- Publication number
- KR100934905B1 KR100934905B1 KR1020070105839A KR20070105839A KR100934905B1 KR 100934905 B1 KR100934905 B1 KR 100934905B1 KR 1020070105839 A KR1020070105839 A KR 1020070105839A KR 20070105839 A KR20070105839 A KR 20070105839A KR 100934905 B1 KR100934905 B1 KR 100934905B1
- Authority
- KR
- South Korea
- Prior art keywords
- coil member
- case
- low frequency
- eccentric
- eccentric roller
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
- H01Q7/08—Ferrite rod or like elongated core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
- H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Support Of Aerials (AREA)
Abstract
Description
도 7은 본 발명의 저주파 안테나의 주요부의 측면도.
Claims (4)
- 페라이트 소자로 형성된 코어에 안테나 코일이 감겨져 형성된 코일 부재(30)와; 비자성체로 형성되고 상기 코일 부재측 일면에 상기 코일 부재(30)가 삽입되는 삽입구(12)가 구비되는 케이스(11)와, 상기 삽입구(12)를 통해 삽입 설치되어 상기 케이스(11) 내에 장착되며, 상기 코일 부재(30)의 끝단과의 간격이 가변되도록 하는 편심 롤러(20)로 이루어져, 상기 코일 부재(30)의 인덕턴스 값을 변화시켜 송신 또는 수신 가능한 저주파의 주파수를 결정하는 주파수 설정부(10);를 포함하는 저주파 안테나에 있어서,상기 편심 롤러(20)는, 페라이트 소자로 형성된 긴 원기둥 부재로서 양쪽 단부에는 롤러의 중심에서 벗어난 위치에 라운드 바 형상의 편심 축(25)이 각각 돌출 형성되고, 상기 코일 부재(30)가 케이스(11)에 삽입되는 방향과 동일하게 케이스(11)에 수평방향으로 삽입된 후, 상기 편심 축(25) 단부에 형성된 공구 삽입홈에 끼워지는 공구에 의해 회전하여 코일 부재(30) 끝단과의 간격을 조정하도록 구성되고,상기 케이스(11)는, 상기 편심 롤러(20)가 탄성적으로 삽입된 후 고정된 상태를 유지할 수 있도록, 편심 롤러(20)가 삽입되는 방향의 양쪽 측면 일부가 절개된 후 케이스 안쪽으로 휘어져 형성된 탄성 지지편(13)을 구비하며,상기 탄성 지지편(13)의 끝단부(13')는, 상기 편심 롤러(20)의 편심축(25)이 안착될 수 있도록 원호상으로 오목하게 곡면 가공되는 것을 특징으로 하는 저주파 안테나.
- 삭제
- 삭제
- 삭제
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070105839A KR100934905B1 (ko) | 2007-10-20 | 2007-10-20 | 저주파 안테나 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070105839A KR100934905B1 (ko) | 2007-10-20 | 2007-10-20 | 저주파 안테나 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090040186A KR20090040186A (ko) | 2009-04-23 |
KR100934905B1 true KR100934905B1 (ko) | 2010-01-06 |
Family
ID=40763765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070105839A KR100934905B1 (ko) | 2007-10-20 | 2007-10-20 | 저주파 안테나 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100934905B1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101250472B1 (ko) * | 2011-07-28 | 2013-04-08 | (주)신창코넥타 | 차량용 lf 안테나 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005191820A (ja) * | 2003-12-25 | 2005-07-14 | Murata Mfg Co Ltd | 送信アンテナコイル |
JP2007043588A (ja) * | 2005-08-05 | 2007-02-15 | Murata Mfg Co Ltd | コイルアンテナ |
-
2007
- 2007-10-20 KR KR1020070105839A patent/KR100934905B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005191820A (ja) * | 2003-12-25 | 2005-07-14 | Murata Mfg Co Ltd | 送信アンテナコイル |
JP2007043588A (ja) * | 2005-08-05 | 2007-02-15 | Murata Mfg Co Ltd | コイルアンテナ |
Also Published As
Publication number | Publication date |
---|---|
KR20090040186A (ko) | 2009-04-23 |
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