NO175178C - radio apparatus - Google Patents

radio apparatus

Info

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
Application number
NO891456A
Other languages
Norwegian (no)
Other versions
NO175178B (en
NO891456L (en
NO891456D0 (en
Inventor
Thomas Moliere
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of NO891456D0 publication Critical patent/NO891456D0/en
Publication of NO891456L publication Critical patent/NO891456L/en
Publication of NO175178B publication Critical patent/NO175178B/en
Publication of NO175178C publication Critical patent/NO175178C/en

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>
NO891456A 1988-04-08 1989-04-07 radio apparatus NO175178C (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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