SE8800143D0 - ANTI-DIVERSITY FILTER EFFECT - Google Patents
ANTI-DIVERSITY FILTER EFFECTInfo
- Publication number
- SE8800143D0 SE8800143D0 SE8800143A SE8800143A SE8800143D0 SE 8800143 D0 SE8800143 D0 SE 8800143D0 SE 8800143 A SE8800143 A SE 8800143A SE 8800143 A SE8800143 A SE 8800143A SE 8800143 D0 SE8800143 D0 SE 8800143D0
- Authority
- SE
- Sweden
- Prior art keywords
- filter
- antenna
- receiver
- filter effect
- tuned
- Prior art date
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).
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 |
DE68927894T DE68927894T2 (en) | 1988-01-18 | 1989-07-12 | MEANS OF FILTER EFFECT BY ANTENNA DIVERSITY |
EP89908727A EP0481986B1 (en) | 1988-01-18 | 1989-07-12 | Means for filter effect by diversity antenna |
PCT/SE1989/000407 WO1991001048A1 (en) | 1988-01-18 | 1989-07-12 | Means for filter effect by diversity antenna |
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 true SE8800143D0 (en) | 1988-01-18 |
SE8800143L 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)
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)
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 |
-
1988
- 1988-01-18 SE SE8800143A patent/SE462191B/en not_active IP Right Cessation
-
1989
- 1989-07-12 EP EP89908727A patent/EP0481986B1/en not_active Expired - Lifetime
- 1989-07-12 DE DE68927894T patent/DE68927894T2/en not_active Expired - Fee Related
- 1989-07-12 WO PCT/SE1989/000407 patent/WO1991001048A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
SE8800143L (en) | 1989-07-19 |
EP0481986A1 (en) | 1992-04-29 |
SE462191B (en) | 1990-05-14 |
DE68927894D1 (en) | 1997-04-24 |
WO1991001048A1 (en) | 1991-01-24 |
DE68927894T2 (en) | 1997-07-10 |
EP0481986B1 (en) | 1997-03-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAL | Patent in force |
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NUG | Patent has lapsed |