EP0616383A1 - Antenne pour radio-émetteur-récepteur portatif - Google Patents

Antenne pour radio-émetteur-récepteur portatif Download PDF

Info

Publication number
EP0616383A1
EP0616383A1 EP94103992A EP94103992A EP0616383A1 EP 0616383 A1 EP0616383 A1 EP 0616383A1 EP 94103992 A EP94103992 A EP 94103992A EP 94103992 A EP94103992 A EP 94103992A EP 0616383 A1 EP0616383 A1 EP 0616383A1
Authority
EP
European Patent Office
Prior art keywords
antenna
arms
arrangement according
antenna arrangement
matching line
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.)
Granted
Application number
EP94103992A
Other languages
German (de)
English (en)
Other versions
EP0616383B1 (fr
Inventor
René Obi
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.)
Invoxia SA
Original Assignee
Ascom Business Systems 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 Ascom Business Systems AG filed Critical Ascom Business Systems AG
Publication of EP0616383A1 publication Critical patent/EP0616383A1/fr
Application granted granted Critical
Publication of EP0616383B1 publication Critical patent/EP0616383B1/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
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole
    • 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
    • H01Q1/243—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 with built-in antennas

Definitions

  • the invention relates to an antenna arrangement for portable radio devices.
  • Handheld radio devices are understood here to mean devices which communicate via radio and which can be handled manually without any problems, in particular easily and can be carried at any time. These include e.g. Mobile devices and especially the handsets of cordless telephony, but not devices whose mobile use only makes sense in combination with a vehicle.
  • Cordless phones are well known today. They each have a basic device and a handheld device.
  • the base unit is arranged relatively stationary and connected to the telephone network like a conventional telephone via a connecting line.
  • the hand-held device can be moved freely within a range of the order of 100 m, the connection to the base device being made in full duplex via one or two radio channels. Both devices are comparable in size and weight to conventional telephones.
  • Cordless phones like all telecommunications facilities, are subject to high cost pressures. There is therefore the general task, e.g. The handheld devices of cordless telephones are not only easy, durable, ergonomic and elegant to train, but also advanced in terms of their technical functions, in accordance with all relevant standards, suitable for production and, above all, inexpensive. If the last is unsuccessful, market success is virtually impossible.
  • Telescopic antennas for example, are known as antennas for portable radio devices.
  • the length of the antenna aligns depends on the radio frequency used and is still a few centimeters at frequencies in the GigaHertz range.
  • the antenna forms a component protruding from the housing of the device, which is specially attached, connected and protected against damage.
  • Fig. 1 shows a schematic representation of an antenna arrangement, as it can be used in portable radio devices.
  • the arrangement has an antenna 10 and a matching line 15.
  • the antenna 10 and the matching line 15 are matched to one another such that the input or output impedance of the antenna and the impedance of the matching line 15 are the same.
  • this impedance is, for example, 50 ⁇ .
  • the antenna 10 is now preferably designed as a half-wave dipole.
  • This dipole essentially has two equally long, symmetrical antenna arms 11, 12, the length of which in vacuum would correspond to half the wavelength / 2 of the resonance frequency. With a current working frequency of 1.890 GHz, for example, this length would be about 8 cm. Due to the dielectric properties of the surroundings of the antenna arms 11, 12, however, the length mentioned is significantly reduced.
  • the matching line 15 is arranged centrally to the antenna 10 and transversely to the latter.
  • the adapter line is at one end to one of the antenna arms, e.g. the arm 11 connected and with its other end to electronic circuits, not shown, in particular transmitting and receiving circuits.
  • the structure of the matching line comprises two different, high-resistance microstrip conductors 17.1, 17.2 and two different capacitors 18.1, 18.2, which are grounded with one of their poles.
  • the microstrip conductors 17 represent high impedance RL impedances, the capacitors 18 RC impedances.
  • the overall result for the matching line 15 is the behavior of an LC impedance, the value of which can be varied by changing the values of the individual elements (17.1, 17.2, 18.1, 18.2).
  • FIG. 2 shows a first, practical exemplary embodiment of an antenna arrangement corresponding to FIG. 1.
  • a load-bearing circuit board 20 coated on both sides is shown in perspective view, preferably a board based on glass epoxy.
  • the antenna arms 11, 12 are arranged as printed conductor tracks.
  • the matching line 15 is connected. This includes the high-resistance, printed microstrip lines 17.1, 17.2, to which the capacitors 18.1, 18.2 are connected as discrete components.
  • the microstrip lines 17 are meandering, with between two legs in the manner of Ladder rungs are arranged several cross connections. These cross connections can be cut individually, starting from the open side. This makes it possible to gradually increase the length of the microstrip lines and thus to trim the RL impedance of these line sections.
  • the two microstrip lines 17.1 and 17.2 of FIG. 1 thus essentially correspond to the two conductor-shaped line sections together with their edge regions.
  • the adapter line 15 is either directly connected to an electronic circuit, e.g. connected to a transmission amplifier or to a line of a predetermined characteristic impedance, in particular a 50 ⁇ line 28.
  • a relatively large mass area 22 is arranged on the other side 21 of the plate 20, which is lower in FIG. 2.
  • This hatched area 22 is at ground potential and interacts with the matching line 15, but not with the antenna 10. Its shape is therefore chosen so that it completely covers the area of the matching line 15 and the vast majority of the electronic circuits, the antenna arms 11, 12, on the other hand, leaves it essentially completely uncovered.
  • the ground surface 22 extends with a relatively pointed end 23 to the center of the antenna, where the inner end of the antenna arm 12 is connected to the ground surface 22 through the plate 20 and is thus grounded.
  • the capacitors 18 are also connected with their one connection poles through the printed circuit board 20 to the ground surface 22 and are therefore on one side at the reference potential zero.
  • the antenna arrangement described is simple in construction and, above all, in the technology of conventional ones printed circuit boards can be produced. This has the particular advantage that the antenna arrangement can be produced together with the wiring pattern of the electronic circuits of, for example, a hand-held device of a cordless telephone, in particular on a single, common plate 20. This then saves further fastening means in the hand-held device and simplifies assembly.
  • the arms 11, 12 of the antenna 10 are approximately linear in accordance with FIGS. 1 and 2 and lie essentially on a common straight line.
  • the following figures show a schematic view of variants of the antenna 10, which are also mirror-symmetrical.
  • FIG. 3 shows the first variant of an antenna, the arms 111, 112 of which are angled in an L-shape, the inner, facing legs of the antenna arms lying on a common straight line.
  • 4 shows, as a second variant, an antenna 10 with arms 211, 212 shaped in a circular arc. These arms lie on a common circle.
  • 5 shows, as a third variant, an antenna 10 in which the arms 311, 312 are wave-shaped in their inner, mutually facing regions and linear in their outer regions.
  • FIG. 6 shows, as a fourth variant, an antenna 10 in which, compared to the third variant (FIG. 5), the linear and the wavy regions of the arms 311, 312 are interchanged.
  • Each of the antennas 10 described so far forms a planar half-wave dipole with mirror-symmetrical antenna arms 11, 12; 111, 112; 211, 212; 311, 312.
  • the arms rest completely on a single side (for example 19) of the printed circuit board 20 and are preferably designed as printed conductor tracks.
  • Glass epoxy is mentioned as the preferred material for the printed circuit board 20.
  • other material is also possible, for example ceramic material which the antenna arms are made in the screen printing process according to the thick film technology. It is generally important for the antenna 10 that it is close to the plate edge 25 of the plate 20. This applies to their entire course, i.e. to both arms and the entire extension of the arms.
  • the antenna is formed in two layers and of the same shape on both sides 19, 21 of the plate 20, with a large number of connections 31 through the plate 20 intimately affecting the two antenna halves connect with each other.
  • the connections 31 can be easily and essentially automatically plated through drilled holes in the plate 20.
  • FIG. 8 shows the section across a further antenna 10.
  • This antenna is predominantly arranged on the front edge 25 of a printed circuit board 20.
  • the edge area of both sides 19, 21 of the plate 20 is covered with mutually associated conductor tracks which are electrically connected to one another around the plate edge, e.g. by plating 26.
  • FIG. 9 shows the section across another antenna 10.
  • one arm 411 lies on one side 19 of the printed circuit board 20 and the other arm 412 lies on the other side 21.
  • This construction makes the hole through the plate 20 superfluous, which leads according to FIG. 2 from the other antenna arm to the end 23 of the ground surface 22.
  • the invention results in an essential, technical development step in terms of producibility, which is reflected in the reduction in manufacturing costs. There are no fundamental limits to the application. However, it is particularly useful to use it in handy devices for general use, in particular in cordless telephony handsets and the associated basic devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
EP94103992A 1993-03-19 1994-03-15 Antenne pour radio-émetteur-récepteur portatif Expired - Lifetime EP0616383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH83893 1993-03-19
CH838/93 1993-03-19

Publications (2)

Publication Number Publication Date
EP0616383A1 true EP0616383A1 (fr) 1994-09-21
EP0616383B1 EP0616383B1 (fr) 1997-12-03

Family

ID=4196383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103992A Expired - Lifetime EP0616383B1 (fr) 1993-03-19 1994-03-15 Antenne pour radio-émetteur-récepteur portatif

Country Status (3)

Country Link
EP (1) EP0616383B1 (fr)
AT (1) ATE160905T1 (fr)
DE (1) DE59404690D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996038879A1 (fr) * 1995-06-02 1996-12-05 Ericsson Inc. Antenne unipolaire imprimee

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11506282A (ja) * 1995-06-02 1999-06-02 エリクソン インコーポレイテッド 多バンド印刷モノポールアンテナ
US5709832A (en) * 1995-06-02 1998-01-20 Ericsson Inc. Method of manufacturing a printed antenna
JPH0964628A (ja) * 1995-08-23 1997-03-07 Murata Mfg Co Ltd アンテナ装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004228A (en) * 1974-04-29 1977-01-18 Integrated Electronics, Ltd. Portable transmitter
EP0117283A1 (fr) * 1983-01-28 1984-09-05 Robert Bosch Gmbh Antenne dipole pour appareil de radio portatif
US4736454A (en) * 1983-09-15 1988-04-05 Ball Corporation Integrated oscillator and microstrip antenna system
US4894663A (en) * 1987-11-16 1990-01-16 Motorola, Inc. Ultra thin radio housing with integral antenna
DE4212808A1 (de) * 1991-04-22 1992-10-29 Mitsubishi Electric Corp Antennenschaltung fuer eine kontaktlose, tragbare speichervorrichtung sowie verfahren zur herstellung derselben
JPH057109A (ja) * 1991-06-27 1993-01-14 Mitsubishi Electric Corp 携帯電話用内蔵アンテナ
JPH0537416A (ja) * 1991-08-02 1993-02-12 Matsushita Electric Ind Co Ltd コードレス電話機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004228A (en) * 1974-04-29 1977-01-18 Integrated Electronics, Ltd. Portable transmitter
EP0117283A1 (fr) * 1983-01-28 1984-09-05 Robert Bosch Gmbh Antenne dipole pour appareil de radio portatif
US4736454A (en) * 1983-09-15 1988-04-05 Ball Corporation Integrated oscillator and microstrip antenna system
US4894663A (en) * 1987-11-16 1990-01-16 Motorola, Inc. Ultra thin radio housing with integral antenna
DE4212808A1 (de) * 1991-04-22 1992-10-29 Mitsubishi Electric Corp Antennenschaltung fuer eine kontaktlose, tragbare speichervorrichtung sowie verfahren zur herstellung derselben
JPH057109A (ja) * 1991-06-27 1993-01-14 Mitsubishi Electric Corp 携帯電話用内蔵アンテナ
JPH0537416A (ja) * 1991-08-02 1993-02-12 Matsushita Electric Ind Co Ltd コードレス電話機

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 17, no. 264 (E - 1370) 24 May 1993 (1993-05-24) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 328 (E - 1385) 22 June 1993 (1993-06-22) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996038879A1 (fr) * 1995-06-02 1996-12-05 Ericsson Inc. Antenne unipolaire imprimee

Also Published As

Publication number Publication date
DE59404690D1 (de) 1998-01-15
EP0616383B1 (fr) 1997-12-03
ATE160905T1 (de) 1997-12-15

Similar Documents

Publication Publication Date Title
DE19732639C1 (de) Antennenkoppler zum Testen von Mobiltelefonen
DE60109365T2 (de) Antennenschaltungsanordnung und Testmethode
DE60009962T2 (de) Hohlleiter-streifenleiter-übergang
DE60220882T2 (de) Streifenleitungsantenne mit schaltbaren reaktiven komponenten für mehrfrequenzverwendung in mobiltelefonkommunikationen
DE69724253T2 (de) Mäanderförmige antennenanordnung
DE602005002046T2 (de) Kompakte mehrband-pifa-antenne mit einem wellenlinienförmigen schlitz bzw. wellenlinienförmigen schlitzen
DE102005047418B4 (de) Mehrband-Antenneneinrichtung, drahtlose Datenübertragungseinrichtung sowie Radiofrequenz-Chip
DE60302909T2 (de) EMV-Vorrichtung eines drahtlosen Datenübertragungsgerätes
EP1250723A2 (fr) Antenne destinee a un terminal de communication
EP2256673A1 (fr) Transpondeur RFID destiné au montage sur métal et son procédé de fabrication
EP0204886B1 (fr) Antenne pour un appareil d'émission-réception radio
DE60128700T2 (de) Drahtloses funkgerät
DE112010000886T5 (de) Hochfrequenzmodul
DE69936648T2 (de) Substratantenne mit einem element zur verhinderung von energiekopplung zwischen antenne und leitern
DE10022107A1 (de) Integrierte Antenne für Mobilfunktelefone
EP1743398A1 (fr) Coupleur d'antenne
WO2002063334A2 (fr) Radar
EP0616383B1 (fr) Antenne pour radio-émetteur-récepteur portatif
EP1370886B1 (fr) Antenne avec de reseau d'alimentation du type coplanaire pour recevoir et/ou emettre des faisceaux radar
EP0669672B1 (fr) Appareil radio portatif
DE60301699T2 (de) Kompakte Streifenleiterantenne mit einer Anpassungsanordnung
WO1999048168A1 (fr) Unite d'installation electrique encastree comportant une antenne
EP1528622A1 (fr) Coupleur d' antenne
DE60204943T2 (de) Gedrückte, eingebaute Antenne für ein tragbares elektronisches Kommunikationsgerät
EP1033821A2 (fr) Module d'émission-réception DECT

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19950220

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19970314

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

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 160905

Country of ref document: AT

Date of ref document: 19971215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: AMMANN PATENTANWAELTE AG BERN

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59404690

Country of ref document: DE

Date of ref document: 19980115

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980212

ET Fr: translation 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
REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: ASCOM BUSINESS SYSTEMS AG TRANSFER- SWISSVOICE AG

Ref country code: CH

Ref legal event code: NV

Representative=s name: PETER RUTZ EUROPEAN PATENT ATTORNEY

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: CH

Payment date: 20040302

Year of fee payment: 11

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

Ref country code: GB

Payment date: 20040303

Year of fee payment: 11

Ref country code: AT

Payment date: 20040303

Year of fee payment: 11

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

Ref country code: DE

Payment date: 20040305

Year of fee payment: 11

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

Ref country code: FR

Payment date: 20040310

Year of fee payment: 11

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

Ref country code: IT

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

Effective date: 20050315

Ref country code: AT

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

Effective date: 20050315

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

Ref country code: LI

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

Effective date: 20050331

Ref country code: CH

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

Effective date: 20050331

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: 20051001

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20050315

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

Ref country code: FR

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

Effective date: 20051130

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20051130