JPH01218106A - Sleeve antenna - Google Patents

Sleeve antenna

Info

Publication number
JPH01218106A
JPH01218106A JP4318388A JP4318388A JPH01218106A JP H01218106 A JPH01218106 A JP H01218106A JP 4318388 A JP4318388 A JP 4318388A JP 4318388 A JP4318388 A JP 4318388A JP H01218106 A JPH01218106 A JP H01218106A
Authority
JP
Japan
Prior art keywords
impedance
feeder
part
make
high frequency
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP4318388A
Inventor
Ichiro Toriyama
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP4318388A priority Critical patent/JPH01218106A/en
Publication of JPH01218106A publication Critical patent/JPH01218106A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To reduce the problem on mounting and to make it usable even at a high frequency by realizing the impedance matching means by a distributed constant circuit substantially and incorporating the means in a feeder part.
CONSTITUTION: A dielectric substance 10 having a relation of εr>1 with a proper length is inserted to a proper position between a center conductor 2 and an outer conductor 4 and between supporting members 7 and 8. Through the insertion of the dielectric substance 10, the characteristic impedance of the part and the effective wavelength are reduced to 1/√ εr to attain impedance conversion. Then the inner diameter of the outer conductor 4 is reduced over a prescribed length wire respect to the center conductor 2 of the feeder 1 so as to make the gap 3 between them narrow thereby converting the impedance of the part. Then, the impedance matching means comprising the distributed constant circuit is built in the feeder substantially and the antenna is usable even at a high frequency with simple constitution and small size.
COPYRIGHT: (C)1989,JPO&Japio
JP4318388A 1988-02-25 1988-02-25 Sleeve antenna Pending JPH01218106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4318388A JPH01218106A (en) 1988-02-25 1988-02-25 Sleeve antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4318388A JPH01218106A (en) 1988-02-25 1988-02-25 Sleeve antenna

Publications (1)

Publication Number Publication Date
JPH01218106A true JPH01218106A (en) 1989-08-31

Family

ID=12656790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4318388A Pending JPH01218106A (en) 1988-02-25 1988-02-25 Sleeve antenna

Country Status (1)

Country Link
JP (1) JPH01218106A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03236613A (en) * 1990-02-14 1991-10-22 Harada Ind Co Ltd Antenna shared with 3-wave for automobile with sleeve
JPH03252203A (en) * 1990-03-01 1991-11-11 Harada Ind Co Ltd Antenna shared among three waves for automobile with sleeve
JP2006507665A (en) * 2002-09-04 2006-03-02 アプライド マテリアルズ インコーポレイテッドApplied Materials,Incorporated Capacitively coupled plasma reactor for uniform distribution of plasma in the radial direction

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61176202A (en) * 1985-01-31 1986-08-07 Harada Kogyo Kk Miniature antenna for wide band and ultrashort wave

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61176202A (en) * 1985-01-31 1986-08-07 Harada Kogyo Kk Miniature antenna for wide band and ultrashort wave

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03236613A (en) * 1990-02-14 1991-10-22 Harada Ind Co Ltd Antenna shared with 3-wave for automobile with sleeve
JP2514449B2 (en) * 1990-02-14 1996-07-10 原田工業株式会社 Sri - three-wave shared antenna for a motor vehicle with Breakfast
JPH03252203A (en) * 1990-03-01 1991-11-11 Harada Ind Co Ltd Antenna shared among three waves for automobile with sleeve
JP2514450B2 (en) * 1990-03-01 1996-07-10 原田工業株式会社 Sri - three-wave shared antenna for a motor vehicle with Breakfast
JP2006507665A (en) * 2002-09-04 2006-03-02 アプライド マテリアルズ インコーポレイテッドApplied Materials,Incorporated Capacitively coupled plasma reactor for uniform distribution of plasma in the radial direction

Similar Documents

Publication Publication Date Title
AU649160B2 (en) Portable radio communication apparatus
TW419854B (en) Surface-mount-type antenna and communication equipment using same
RU2130673C1 (en) Dual-function antenna for portable radio communication set
KR19990081910A (en) Antenna suitable for the frequency band that exceeds the 200㎒
EP0734092B1 (en) Inductive coupled extendable antenna
JPH03274909A (en) Ultra-short wave transmission and/or reception antenna formed as helical antenna
MY117981A (en) Antenna for use with a portable radio apparatus.
EP1239533A3 (en) Antenna element
CA2416437A1 (en) Internal antennas for mobile communication devices
CA2061743A1 (en) End loaded helix antenna
JPS6187434A (en) Portable radio equipment
JPH03114157A (en) Coaxial cable connector and assembly
CA2198375A1 (en) An antenna
EP0831547A3 (en) Microstrip antenna
CA2074015C (en) Miniature antenna
CA2292635A1 (en) Compact spiral antenna
US6590539B2 (en) Antenna device in radio communication terminal
JPH02190004A (en) Method and device for connecting multiple coaxial cable to radio frequency antenna without balanced/ unbalanced transformer
JPH0275205A (en) Antenna system for vehicle
JPH0332202A (en) Radiation element for two-way communication
JPH0344204A (en) Wide and microstrip feeder antenna
SE523717C2 (en) Chip antenna and radio equipment comprising such a chip antenna
CA2247418A1 (en) Antenna for a radio telecommunications device
EP0825672A3 (en) A dual frequency antenna
EP1069642A3 (en) Antenna assembly and portable radio apparatus