EP0481986B1 - Moyens filtrants utilisant des antennes a diversite de reception - Google Patents

Moyens filtrants utilisant des antennes a diversite de reception Download PDF

Info

Publication number
EP0481986B1
EP0481986B1 EP89908727A EP89908727A EP0481986B1 EP 0481986 B1 EP0481986 B1 EP 0481986B1 EP 89908727 A EP89908727 A EP 89908727A EP 89908727 A EP89908727 A EP 89908727A EP 0481986 B1 EP0481986 B1 EP 0481986B1
Authority
EP
European Patent Office
Prior art keywords
antenna
receiver
transmitter
tuned
filter
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.)
Expired - Lifetime
Application number
EP89908727A
Other languages
German (de)
English (en)
Other versions
EP0481986A1 (fr
Inventor
Ulf Saldell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allgon AB
Original Assignee
Allgon 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 AB filed Critical Allgon AB
Publication of EP0481986A1 publication Critical patent/EP0481986A1/fr
Application granted granted Critical
Publication of EP0481986B1 publication Critical patent/EP0481986B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • This invention concerns a communication radio set having the transmitter and the receiver in one and the same housing, including a first antenna connected with and tuned to the transmitter and a second antenna connected with and tuned to the receiver, which antennas are separated from each other and are placed one of each at opposite ends of the housing and have the aerial power directed from the housing.
  • the object of the invention is to eliminate the necessity of a duplex filter which is adapted in the apparatus in order to protect that the transmitting signal disturbs the receiver in a communication radio set or a wireless telephone.
  • Duplex filter is an expensive means and it is a great advantage if the antenna can be arranged without duplex filter.
  • each of the antennas consists of a metallic base and antenna elements having an asymmetrical aerial pattern, the antenna bases being elecrically separated and the position of the aerial pattern being such that the antenna action is directed away from the transmitter and the receiver respectively.
  • Fig. 1 is a schematic view of an apparatus having the antennas inside the housing.
  • Fig. 2 is a view of an antenna to be used with the apparatus according to Fig. 1.
  • a communication radio set or a wireless telephone includes a housing 1.
  • a receiver 2 and a transmitter 3 are arranged within the housing.
  • the apparatus is so formed that the communication operates in and out at the same time and thus without either of the receiver or the transmitter to be turned off.
  • the apparatus is provided with a first antenna 8 which is connected to the receiver and a second antenna 9 which is connected to the transmitter.
  • the transmitter and the receiver operate on different frequences.
  • the antenna 8 is tuned to the receiver 2 and the antenna 9 is tuned to the transmitter 3.
  • the antenna 8 may be connected to the receiver via a simple filter 10 and the antenna 9 may be connected to the transmitter 3 via a simple filter 11. Duplex filter, which is much more expensive than the filters 10 and 11 is not needed when operating the apparatus according to fig. 1.
  • the antennas 8 and 9 have been placed inside the housing 1.
  • the antennas 8 and 9 are so formed that the aerial pattern is asymmetrical, thus according to the patterns shown on the left side of fig. 1.
  • the antenna action will thus be directed from the interior of the apparatus.
  • the requirements of the performance of the filters 10 and 11 are further reduced. Further the radiation inwardly to the units, which are placed inside the apparatuses, is reduced and the electrical misfunction of these units is eliminated or at least reduced.
  • the connections between antenna and receiver respectively can be made more simple.
  • the contacts of the antennas can simply be of the coaxial type or any other type which is available on the market and using this simple types of contacts will make the design simple and cheap.
  • FIG. 2 An embodiment of an antenna which has directive action is shown schematically in fig. 2.
  • the antenna according to fig. 2 can be said to represent the antenna 8 of fig. 1 and it consists of a metal element 12 and antenna elements 13 placed above the metal element 12.
  • the antenna pattern of this antenna is according to the diagram in fig. 1 at the top to the left. This diagram is denoted with A.
  • a design performing the antenna pattern according to B of Fig. 1 can be used for the antenna 9.
  • the antenna shown in Fig. 2 is hereby inverted.

Landscapes

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

Abstract

Un moyen conférant un effet filtrant à des antennes destinées à des postes de radio communication ainsi qu'à des téléphones sans fil, l'émetteur et le récepteur se trouvant dans le même logement, comprend un filtre complex se trouvant entre l'antenne et le poste de l'appareil. Il est nécessaire d'avoir ce filtre duplex dans l'appareil afin d'empêcher que le signal de transmission ne brouille le récepteur dans une radio communication ou un téléphone sans fil. Afin d'éliminer la nécessité d'avoir recours à ce filtre, on a adapté séparément l'une de l'autre une antenne (5) connectée à l'émetteur (3) et syntonisée sur celui-ci, et une seconde antenne (4) connectée au récepteur (2) et syntonisée sur ce dernier.

Claims (1)

  1. Poste de radiocommunication dont l'émetteur et le récepteur sont placés dans un seul et même boîtier, incluant une première antenne connectée à l'émetteur et accordée avec celui-ci et une seconde antenne connectée au récepteur et accordée avec celui-ci, lesquelles antennes sont séparées l'une de l'autre et sont placées à chacune des extrémités opposées du boîtier et leur puissance aérienne est orientée par rapport au boîtier, caractérisé en ce que les antennes (8; 9) consistent en une base métallique (12) et des éléments d'antenne (13) présentant un diagramme aérien asymétrique, les bases d'antennes étant séparées électriquement et la position du diagramme aérien étant telle que l'action d'antenne est orientée à l'opposé respectivement de l'émetteur et du récepteur.
EP89908727A 1988-01-18 1989-07-12 Moyens filtrants utilisant des antennes a diversite de reception Expired - Lifetime EP0481986B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8800143A SE462191B (sv) 1988-01-18 1988-01-18 Anordning foer filterverkan vid antenner foer kommunikationsradioapparater och traadloesa telefoner
PCT/SE1989/000407 WO1991001048A1 (fr) 1988-01-18 1989-07-12 Moyen conferant un effet filtrant a une antenne a rayonnement zenithale reduit

Publications (2)

Publication Number Publication Date
EP0481986A1 EP0481986A1 (fr) 1992-04-29
EP0481986B1 true EP0481986B1 (fr) 1997-03-19

Family

ID=20371098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908727A Expired - Lifetime EP0481986B1 (fr) 1988-01-18 1989-07-12 Moyens filtrants utilisant des antennes a diversite de reception

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6314276B1 (en) 1998-08-17 2001-11-06 U.S. Philips Corporation Transmitted-receiver

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410542B4 (de) * 1994-03-26 2004-07-22 Fuba Automotive Gmbh & Co. Kg Anordnung für den Betrieb von Funkgeräten
SE514773C2 (sv) 1998-09-28 2001-04-23 Allgon Ab Radiokommunikationsenhet och antennsystem

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 (de) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Antenne fuer ein funksende- und -empfangsgeraet
US4672685A (en) * 1986-01-03 1987-06-09 Motorola, Inc. Dual band antenna having separate matched inputs for each band

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6314276B1 (en) 1998-08-17 2001-11-06 U.S. Philips Corporation Transmitted-receiver

Also Published As

Publication number Publication date
SE462191B (sv) 1990-05-14
EP0481986A1 (fr) 1992-04-29
DE68927894T2 (de) 1997-07-10
DE68927894D1 (de) 1997-04-24
WO1991001048A1 (fr) 1991-01-24
SE8800143L (sv) 1989-07-19
SE8800143D0 (sv) 1988-01-18

Similar Documents

Publication Publication Date Title
EP1192726B1 (fr) Structure de circuit preamplificateur hf
AU719362B2 (en) Planar antenna
AU724641B2 (en) Dual-band antenna coupler for a portable radiotelephone
EP0375415B1 (fr) Antennes planes à fente et leur utilisation dans les automobiles
US6185434B1 (en) Antenna filtering arrangement for a dual mode radio communication device
EP0821430B1 (fr) Antenne en boucle
US6281850B1 (en) Broadband multiple element antenna system
US5847683A (en) Transmission line antenna and utility meter using same
EP1338057A1 (fr) Antenne alimentee en extremite avec contrepoids pour terminal mobile
SE9704051D0 (sv) A portable electronic communication device with multi-band anetnna system
WO1985002719A1 (fr) Antenne d'emetteur-recepteur a bande double
WO1998025323A9 (fr) Coupleur d'antenne double bande pour radiotelephone portable
SE9704052L (sv) Portabel elektronisk kommunikationsanordning med dubbelbandigt antennsystem
US5521607A (en) Bandswitched electrically short tactical monopole antenna system
GB2100063A (en) Antenna
KR20010013298A (fr) Antenne retractible
WO2000035124A3 (fr) Systeme a deux antennes
GB2357906A (en) An antenna means, a radio communication system and a method for manufacturing a radiating structure
US5182568A (en) Loss cancellation element for an integral antenna receiver
EP0632603B1 (fr) Antenne avec des antennes élémentaires pour recevoir ou transmettre des différentes fréquences
US6850738B2 (en) Method and antenna arrangement for coupling external antennas to a communication unit
WO1991001048A1 (fr) Moyen conferant un effet filtrant a une antenne a rayonnement zenithale reduit
WO2005099030A1 (fr) Ensemble element rayonnant d'antenne et dispositif de communications radio
WO2006101753A1 (fr) Ensemble de radiateur d'antenne et dispositif de communication radio
US4340891A (en) Dual polarized base station receive antenna

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920102

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT NL

17Q First examination report despatched

Effective date: 19940107

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALLGON AB

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970319

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19970319

Ref country code: FR

Effective date: 19970319

REF Corresponds to:

Ref document number: 68927894

Country of ref document: DE

Date of ref document: 19970424

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000717

Year of fee payment: 12

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020501

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020618

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030712

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030712