NO175178C - radio apparatus - Google Patents
radio apparatusInfo
- Publication number
- NO175178C NO175178C NO891456A NO891456A NO175178C NO 175178 C NO175178 C NO 175178C NO 891456 A NO891456 A NO 891456A NO 891456 A NO891456 A NO 891456A NO 175178 C NO175178 C NO 175178C
- Authority
- NO
- Norway
- Prior art keywords
- antenna
- radio
- transceiver
- external
- external antenna
- Prior art date
Links
Classifications
-
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Transceivers (AREA)
- Road Signs Or Road Markings (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Telephone Function (AREA)
- Transmitters (AREA)
Abstract
A radio apparatus having a transceiver, an associated apparatus antenna and switching devices for the optional connection of an external antenna. It is intended to specify a simple solution, which is reliable in technical radio terms, for interruption-free antenna changeover switching for such an, especially portable, radio apparatus. For the antenna changeover switching, the apparatus antenna (2) is connected to the transceiver via a semiconductor switch (5) and the antenna connection (3) for the external antenna is connected to the transceiver via a radio-frequency line. When the external antenna is plugged into the antenna socket (3), the semiconductor switch (5) switches off and the transceiver is connected through to the external antenna, which has a low DC resistance. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3811800 | 1988-04-08 |
Publications (4)
Publication Number | Publication Date |
---|---|
NO891456D0 NO891456D0 (en) | 1989-04-07 |
NO891456L NO891456L (en) | 1989-10-09 |
NO175178B NO175178B (en) | 1994-05-30 |
NO175178C true NO175178C (en) | 1994-09-07 |
Family
ID=6351623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO891456A NO175178C (en) | 1988-04-08 | 1989-04-07 | radio apparatus |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0336375B1 (en) |
AT (1) | ATE91360T1 (en) |
DE (1) | DE58904854D1 (en) |
DK (1) | DK169692B1 (en) |
FI (1) | FI94692C (en) |
NO (1) | NO175178C (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2570582B2 (en) * | 1993-07-23 | 1997-01-08 | 日本電気株式会社 | Portable radio |
TW317067B (en) * | 1997-01-23 | 1997-10-01 | Acer Peripherals Inc | Antenna switching device used in radio handheld set |
EP0977900A4 (en) * | 1997-04-22 | 2001-06-13 | Ecosolder Internat Pty Ltd | Lead-free solder |
DE19935005A1 (en) * | 1999-07-26 | 2001-05-23 | Siemens Ag | Combined charging and antenna plug for mobile communications instrument |
EP1160911A1 (en) * | 2000-05-29 | 2001-12-05 | Sony International (Europe) GmbH | Additional antenna RF switch in a mobile terminal for a wireless telecommunication system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2044156B2 (en) * | 1970-09-05 | 1978-12-21 | Robert Bosch Gmbh, 7000 Stuttgart | Portable two=way radio - has ferrite or frame receiving antenna within casing and telescopic or rod transmitting antenna withdrawable from casing |
DE2652514A1 (en) * | 1976-11-18 | 1978-05-24 | Koerting Radio Werke Gmbh | Electronic changeover switch system - is manually or remotely operated with two PIN diodes connected in series, with their junction point connected to changeover switch |
US4584709A (en) * | 1983-07-06 | 1986-04-22 | Motorola, Inc. | Homotropic antenna system for portable radio |
JPS60223231A (en) * | 1984-04-19 | 1985-11-07 | Nec Corp | Radio communication equipment |
-
1989
- 1989-04-04 AT AT89105902T patent/ATE91360T1/en not_active IP Right Cessation
- 1989-04-04 EP EP89105902A patent/EP0336375B1/en not_active Expired - Lifetime
- 1989-04-04 DE DE8989105902T patent/DE58904854D1/en not_active Expired - Fee Related
- 1989-04-06 DK DK165989A patent/DK169692B1/en not_active IP Right Cessation
- 1989-04-07 NO NO891456A patent/NO175178C/en unknown
- 1989-04-07 FI FI891674A patent/FI94692C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DK165989A (en) | 1989-10-09 |
ATE91360T1 (en) | 1993-07-15 |
EP0336375B1 (en) | 1993-07-07 |
NO175178B (en) | 1994-05-30 |
DK165989D0 (en) | 1989-04-06 |
DE58904854D1 (en) | 1993-08-12 |
DK169692B1 (en) | 1995-01-09 |
FI94692C (en) | 1995-10-10 |
NO891456L (en) | 1989-10-09 |
FI891674A0 (en) | 1989-04-07 |
FI94692B (en) | 1995-06-30 |
FI891674A (en) | 1989-10-09 |
NO891456D0 (en) | 1989-04-07 |
EP0336375A1 (en) | 1989-10-11 |
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