CA2043321A1 - Antenna for portable radio equipment - Google Patents
Antenna for portable radio equipmentInfo
- Publication number
- CA2043321A1 CA2043321A1 CA 2043321 CA2043321A CA2043321A1 CA 2043321 A1 CA2043321 A1 CA 2043321A1 CA 2043321 CA2043321 CA 2043321 CA 2043321 A CA2043321 A CA 2043321A CA 2043321 A1 CA2043321 A1 CA 2043321A1
- Authority
- CA
- Canada
- Prior art keywords
- antenna
- portable radio
- radio equipment
- lambda
- wavelength long
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/10—Telescopic elements
-
- 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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
-
- 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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
- H01Q1/244—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas extendable from a housing along a given path
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
- Transceivers (AREA)
Abstract
An antenna for portable radio equipment serves as a .lambda./2 wavelength long antenna when extended or as a less than .lambda./4 wavelength long antenna such as a .lambda./8 wavelength long antenna when contracted. Both of such antenna configurations are matched by a single matching circuit with respect to impedance.
The antenna radiates power efficiently in the horizontal plane.
The antenna radiates power efficiently in the horizontal plane.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13712590A JPH0432305A (en) | 1990-05-29 | 1990-05-29 | Antenna |
JP2-137125 | 1990-05-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2043321A1 true CA2043321A1 (en) | 1991-11-30 |
CA2043321C CA2043321C (en) | 1997-08-19 |
Family
ID=15191406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2043321 Expired - Fee Related CA2043321C (en) | 1990-05-29 | 1991-05-27 | Antenna for portable radio equipment |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0459391B1 (en) |
JP (1) | JPH0432305A (en) |
AU (1) | AU640787B2 (en) |
CA (1) | CA2043321C (en) |
DE (1) | DE69124714T2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2703670B2 (en) * | 1991-04-12 | 1998-01-26 | 三菱電機株式会社 | Antenna device |
JP2503856B2 (en) * | 1993-01-29 | 1996-06-05 | 日本電気株式会社 | Antenna for portable radio |
US5717408A (en) * | 1995-12-18 | 1998-02-10 | Centurion International, Inc. | Retractable antenna for a cellular telephone |
KR100285950B1 (en) * | 1997-12-26 | 2001-04-16 | 윤종용 | Method for emboding antenna circuit of mobile phone for reducing an influence of human body |
KR100605817B1 (en) | 2004-06-01 | 2006-08-01 | 삼성전자주식회사 | Antenna apparatus for sliding type portable terminal |
CN101740849B (en) * | 2010-01-26 | 2013-06-12 | 华为终端有限公司 | Multi-band antenna |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6094507A (en) * | 1983-10-28 | 1985-05-27 | Fujitsu Ten Ltd | Variable length whip antenna |
JPS63173934U (en) * | 1987-04-30 | 1988-11-11 | ||
GB2213998B (en) * | 1987-12-23 | 1991-06-12 | Technophone Ltd | Antenna, connector and impedance matching network assembly |
JP2756672B2 (en) * | 1987-12-25 | 1998-05-25 | 日本アンテナ株式会社 | Multi-frequency antenna |
JPH01105237U (en) * | 1987-12-28 | 1989-07-14 | ||
US4847629A (en) * | 1988-08-03 | 1989-07-11 | Alliance Research Corporation | Retractable cellular antenna |
US4868576A (en) * | 1988-11-02 | 1989-09-19 | Motorola, Inc. | Extendable antenna for portable cellular telephones with ground radiator |
-
1990
- 1990-05-29 JP JP13712590A patent/JPH0432305A/en active Pending
-
1991
- 1991-05-27 CA CA 2043321 patent/CA2043321C/en not_active Expired - Fee Related
- 1991-05-28 DE DE1991624714 patent/DE69124714T2/en not_active Expired - Fee Related
- 1991-05-28 EP EP91108683A patent/EP0459391B1/en not_active Expired - Lifetime
- 1991-05-29 AU AU78041/91A patent/AU640787B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
JPH0432305A (en) | 1992-02-04 |
AU640787B2 (en) | 1993-09-02 |
DE69124714T2 (en) | 1997-06-26 |
EP0459391B1 (en) | 1997-02-19 |
DE69124714D1 (en) | 1997-03-27 |
AU7804191A (en) | 1991-12-05 |
CA2043321C (en) | 1997-08-19 |
EP0459391A3 (en) | 1992-03-04 |
EP0459391A2 (en) | 1991-12-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |