JPS57190429A - Portable radio receiver - Google Patents
Portable radio receiverInfo
- Publication number
- JPS57190429A JPS57190429A JP56074411A JP7441181A JPS57190429A JP S57190429 A JPS57190429 A JP S57190429A JP 56074411 A JP56074411 A JP 56074411A JP 7441181 A JP7441181 A JP 7441181A JP S57190429 A JPS57190429 A JP S57190429A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- circuit
- loop antenna
- filter
- antenna
- 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
- H01Q1/12—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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
- G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
- G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56074411A JPS57190429A (en) | 1981-05-18 | 1981-05-18 | Portable radio receiver |
US06/376,981 US4491978A (en) | 1981-05-18 | 1982-05-10 | Portable radio receiver with high antenna gain |
CA000403119A CA1183903A (en) | 1981-05-18 | 1982-05-17 | Portable radio receiver with high antenna gain |
AU83801/82A AU563125B2 (en) | 1981-05-18 | 1982-05-18 | Radio receiver |
GB08214409A GB2101436B (en) | 1981-05-18 | 1982-05-18 | Portable radio receiver with high antenna gain |
HK804/89A HK80489A (en) | 1981-05-18 | 1989-10-12 | Portable radio receiver with high antenna gain |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56074411A JPS57190429A (en) | 1981-05-18 | 1981-05-18 | Portable radio receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57190429A true JPS57190429A (en) | 1982-11-24 |
JPS6242534B2 JPS6242534B2 (ja) | 1987-09-09 |
Family
ID=13546417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56074411A Granted JPS57190429A (en) | 1981-05-18 | 1981-05-18 | Portable radio receiver |
Country Status (6)
Country | Link |
---|---|
US (1) | US4491978A (ja) |
JP (1) | JPS57190429A (ja) |
AU (1) | AU563125B2 (ja) |
CA (1) | CA1183903A (ja) |
GB (1) | GB2101436B (ja) |
HK (1) | HK80489A (ja) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1276992C (en) * | 1986-09-26 | 1990-11-27 | Andrew E. Mcgirr | Electronically controlled matching circuit |
US4862181A (en) * | 1986-10-31 | 1989-08-29 | Motorola, Inc. | Miniature integral antenna-radio apparatus |
JPH0693635B2 (ja) * | 1986-12-19 | 1994-11-16 | 日本電気株式会社 | 小型無線機 |
ATE88836T1 (de) * | 1987-01-02 | 1993-05-15 | Motorola Inc | Geraet zur abstimmung einer antenne fuer personenkommunikationsanlagen. |
JP2624257B2 (ja) * | 1987-06-29 | 1997-06-25 | 日本電気株式会社 | 無線機用アンテナ |
US4814776A (en) * | 1987-09-10 | 1989-03-21 | Motorola, Inc. | Optimally grounded small loop antenna |
JP2806525B2 (ja) * | 1988-03-04 | 1998-09-30 | 日本電気株式会社 | 表示機能付受信機 |
JPH01241927A (ja) * | 1988-03-24 | 1989-09-26 | Kokusai Electric Co Ltd | 無線呼出用受信機 |
GB2218597A (en) * | 1988-05-12 | 1989-11-15 | Plessey Co Plc | Multichannel radio communication system |
JPH02116228A (ja) * | 1988-10-26 | 1990-04-27 | Nec Corp | 携帯用無線機 |
KR910009665B1 (ko) * | 1989-05-31 | 1991-11-25 | 삼성전자 주식회사 | 무선 수신기의 전원 절약회로 및 그 제어방법 |
US5182568A (en) * | 1990-05-21 | 1993-01-26 | Motorola, Inc. | Loss cancellation element for an integral antenna receiver |
US5135660A (en) * | 1991-01-07 | 1992-08-04 | Dow Corning Corporation | Method of recovering oil from the surface of water |
JP2731659B2 (ja) * | 1992-01-29 | 1998-03-25 | 日本電気株式会社 | 無線選択呼出し受信機 |
US5268699A (en) * | 1992-09-24 | 1993-12-07 | Motorola, Inc. | Data communication receiver utilizing a loop antenna having a hinged connection |
US5485166A (en) * | 1993-05-27 | 1996-01-16 | Savi Technology, Inc. | Efficient electrically small loop antenna with a planar base element |
US5589844A (en) * | 1995-06-06 | 1996-12-31 | Flash Comm, Inc. | Automatic antenna tuner for low-cost mobile radio |
US5765112A (en) * | 1995-06-06 | 1998-06-09 | Flash Comm. Inc. | Low cost wide area network for data communication using outbound message specifying inbound message time and frequency |
AU705213B2 (en) * | 1995-06-06 | 1999-05-20 | Terion, Inc. | Determining propagating and clear frequency in wireless data communications network |
US5734963A (en) * | 1995-06-06 | 1998-03-31 | Flash Comm, Inc. | Remote initiated messaging apparatus and method in a two way wireless data communications network |
US6041242A (en) * | 1996-06-21 | 2000-03-21 | Coulthard; Steve M. | Portable emergency response communications system and method |
US6243592B1 (en) * | 1997-10-23 | 2001-06-05 | Kyocera Corporation | Portable radio |
ITRM20010222A1 (it) * | 2001-04-24 | 2002-10-24 | Paolo Agostinelli | Dispositivo di alimentazione a celle solari, funzionanti con sorgentiluminose artificiali, per apparecchiature elettroniche. |
JP3970751B2 (ja) * | 2002-11-06 | 2007-09-05 | 新潟精密株式会社 | ダブルコンバージョン方式の受信機 |
TW200511649A (en) * | 2003-07-21 | 2005-03-16 | Ipr Licensing Inc | Multi-band antenna for wireless applications |
FR2863406B1 (fr) * | 2003-12-09 | 2008-08-29 | Cit Alcatel | Antenne pour terminal de radiocommunication |
SG188064A1 (en) * | 2011-08-23 | 2013-03-28 | Agency Science Tech & Res | Circuit arrangement and receiver including thecircuit arrangement |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2428265A (en) * | 1943-06-04 | 1947-09-30 | Rca Corp | Frequency modulation receiving system |
DE2246602B1 (de) * | 1972-09-22 | 1974-01-24 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Gleichstromversorgungs-Anschlußteil |
US3980952A (en) * | 1975-04-07 | 1976-09-14 | Motorola, Inc. | Dipole antenna system having conductive containers as radiators and a tubular matching coil |
-
1981
- 1981-05-18 JP JP56074411A patent/JPS57190429A/ja active Granted
-
1982
- 1982-05-10 US US06/376,981 patent/US4491978A/en not_active Expired - Lifetime
- 1982-05-17 CA CA000403119A patent/CA1183903A/en not_active Expired
- 1982-05-18 AU AU83801/82A patent/AU563125B2/en not_active Expired
- 1982-05-18 GB GB08214409A patent/GB2101436B/en not_active Expired
-
1989
- 1989-10-12 HK HK804/89A patent/HK80489A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU8380182A (en) | 1982-11-25 |
AU563125B2 (en) | 1987-06-25 |
JPS6242534B2 (ja) | 1987-09-09 |
GB2101436B (en) | 1985-02-13 |
CA1183903A (en) | 1985-03-12 |
GB2101436A (en) | 1983-01-12 |
HK80489A (en) | 1989-10-20 |
US4491978A (en) | 1985-01-01 |
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