SE8800143L - DEVICE FOR FILTER EFFECT THROUGH ANTENNA DIVERSITY - Google Patents

DEVICE FOR FILTER EFFECT THROUGH ANTENNA DIVERSITY

Info

Publication number
SE8800143L
SE8800143L SE8800143A SE8800143A SE8800143L SE 8800143 L SE8800143 L SE 8800143L SE 8800143 A SE8800143 A SE 8800143A SE 8800143 A SE8800143 A SE 8800143A SE 8800143 L SE8800143 L SE 8800143L
Authority
SE
Sweden
Prior art keywords
filter
antenna
receiver
filter effect
antenna diversity
Prior art date
Application number
SE8800143A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8800143D0 (en
SE462191B (en
Inventor
U Saldell
Original Assignee
Allgon Antenn Ab
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 Allgon Antenn Ab filed Critical Allgon Antenn Ab
Priority to SE8800143A priority Critical patent/SE462191B/en
Publication of SE8800143D0 publication Critical patent/SE8800143D0/en
Priority to PCT/SE1989/000407 priority patent/WO1991001048A1/en
Priority to EP89908727A priority patent/EP0481986B1/en
Priority to DE68927894T priority patent/DE68927894T2/en
Publication of SE8800143L publication Critical patent/SE8800143L/en
Publication of SE462191B publication Critical patent/SE462191B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/525—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between emitting and receiving antennas

Landscapes

  • Support Of Aerials (AREA)
  • Transceivers (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

Means for filter effect by antennas for communication radio sets and wireless telephones having the transmitter and the receiver in the same housing includes a complicated filter between antenna and set of apparatus. It is necessary to have this duplex filter in the apparatus in order to prevent that the transmitting signal interferes with the receiver in a communication radio or wireless telephone. In order to eliminate the necessity of this filter there are adapted separately from each other one antenna (5) connected with and tuned to the transmitter (3) and the second antenna (4) connected with and tuned to receiver (2).
SE8800143A 1988-01-18 1988-01-18 DEVICE FOR FILTER EFFECT ON ANTENNA FOR COMMUNICATION RADIO DEVICES AND WIRELESS PHONES SE462191B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE8800143A SE462191B (en) 1988-01-18 1988-01-18 DEVICE FOR FILTER EFFECT ON ANTENNA FOR COMMUNICATION RADIO DEVICES AND WIRELESS PHONES
PCT/SE1989/000407 WO1991001048A1 (en) 1988-01-18 1989-07-12 Means for filter effect by diversity antenna
EP89908727A EP0481986B1 (en) 1988-01-18 1989-07-12 Means for filter effect by diversity antenna
DE68927894T DE68927894T2 (en) 1988-01-18 1989-07-12 MEANS OF FILTER EFFECT BY ANTENNA DIVERSITY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8800143A SE462191B (en) 1988-01-18 1988-01-18 DEVICE FOR FILTER EFFECT ON ANTENNA FOR COMMUNICATION RADIO DEVICES AND WIRELESS PHONES

Publications (3)

Publication Number Publication Date
SE8800143D0 SE8800143D0 (en) 1988-01-18
SE8800143L true SE8800143L (en) 1989-07-19
SE462191B SE462191B (en) 1990-05-14

Family

ID=20371098

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8800143A SE462191B (en) 1988-01-18 1988-01-18 DEVICE FOR FILTER EFFECT ON ANTENNA FOR COMMUNICATION RADIO DEVICES AND WIRELESS PHONES

Country Status (4)

Country Link
EP (1) EP0481986B1 (en)
DE (1) DE68927894T2 (en)
SE (1) SE462191B (en)
WO (1) WO1991001048A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410542B4 (en) * 1994-03-26 2004-07-22 Fuba Automotive Gmbh & Co. Kg Arrangement for the operation of radio equipment
DE19836952A1 (en) * 1998-08-17 2000-04-20 Philips Corp Intellectual Pty Sending and receiving device
SE514773C2 (en) 1998-09-28 2001-04-23 Allgon Ab Radio communication unit and antenna system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1194547A (en) * 1967-11-13 1970-06-10 Burndept Electronics Ltd Portable Radio Transmitting and Receiving Equipment
GB2120905B (en) * 1982-01-25 1986-03-19 Viking Phone Co Inc Cordless telephone
DE3520983A1 (en) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart ANTENNA FOR A RADIO TRANSMITTER AND RECEIVER
US4672685A (en) * 1986-01-03 1987-06-09 Motorola, Inc. Dual band antenna having separate matched inputs for each band

Also Published As

Publication number Publication date
WO1991001048A1 (en) 1991-01-24
SE8800143D0 (en) 1988-01-18
EP0481986B1 (en) 1997-03-19
EP0481986A1 (en) 1992-04-29
DE68927894T2 (en) 1997-07-10
DE68927894D1 (en) 1997-04-24
SE462191B (en) 1990-05-14

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