EP0669672A1 - Appareil radio portatif - Google Patents

Appareil radio portatif Download PDF

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Publication number
EP0669672A1
EP0669672A1 EP95102317A EP95102317A EP0669672A1 EP 0669672 A1 EP0669672 A1 EP 0669672A1 EP 95102317 A EP95102317 A EP 95102317A EP 95102317 A EP95102317 A EP 95102317A EP 0669672 A1 EP0669672 A1 EP 0669672A1
Authority
EP
European Patent Office
Prior art keywords
circuit board
sheet metal
slot
metal part
antenna
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
EP95102317A
Other languages
German (de)
English (en)
Other versions
EP0669672B1 (fr
Inventor
Bruno Stuber
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.)
Ascom Schweiz AG
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 EP0669672A1 publication Critical patent/EP0669672A1/fr
Application granted granted Critical
Publication of EP0669672B1 publication Critical patent/EP0669672B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas

Definitions

  • the invention relates to a handheld radio in accordance with the preamble of the first claim.
  • Handheld radio devices are known, for example as a handheld device of a cordless telephone or as a mobile phone. In general, they have a rod-shaped antenna protruding from the housing, the length of which depends on the wavelength used. At today's high frequencies, the length can have shrunk to a few centimeters. Nevertheless, such an antenna is a vulnerable part of the radio. For the latter reason, telescopic antennas are known for small radio devices which can be inserted into the interior of the housing when not in use.
  • a very small radio receiver is known from the document DE 32 14 449 A1, in which the arms or the two halves of a dipole antenna are closely connected to the circuit board of the receiver. In this way, the antenna, like the electronics, can be completely enclosed by the associated housing.
  • slot antenna forms part of the housing wall and that the housing is either made of metal or is designed as an at least partially metallized plastic part.
  • the slot antenna is arranged on an end face of the housing and is preferably designed as a double-l bent antenna which touches the end face and additionally two side surfaces of the housing.
  • FIG. 1 shows a slot antenna 10 which is known per se. This consists primarily of a flat sheet metal part 11 or of a plate made of metal or another electrically highly conductive material, an elongated, generally rectangular slot 12 being removed in the middle.
  • the length L of the slot 12 surrounded on all sides by sheet metal corresponds (in the simplest case) to approximately half the wavelength of the electromagnetic wave radiated by the antenna 10.
  • the width B of the slot 12 is small compared to the length L. Further requirements are not necessary; however, sizes L and B as well as other factors such as the exact shape of the slot 12 the special properties of the respective antenna.
  • the antenna 10 is supplied or decoupled via two connection points 13, 14, which are essentially opposite one another on the longitudinal edges of the slot 12.
  • connection points 13, 14 are arranged approximately in the middle of the longitudinal edges (as shown in FIG. 1), the coupling or uncoupling takes place with relatively high resistance. If, on the other hand, the connection points have moved to the edge of the longitudinal edges, the coupling or decoupling takes place with significantly less high resistance.
  • a slot antenna 10 can be folded or folded in a double-L-shaped manner, which results in better spatial radiation characteristics than with flat antennas.
  • FIG. 2 shows a perspective view of the structure of the inner elements of a radio device to be carried in the hand, in particular the hand-held device of a cordless telephone.
  • a radio device to be carried in the hand, in particular the hand-held device of a cordless telephone.
  • all of the electronics can be accommodated on a single, rectangular printed circuit board 17, for example, equipped on both sides.
  • On one end face 19 of the plate 17 is now a double L-shaped slot antenna 10 made of an electrically highly conductive, mechanically elastic metal sheet 11 (eg nickel silver).
  • this sheet metal part 11 or the slot antenna 10 is shown again in an exploded view in FIG. 3.
  • the slot width B of the antenna 10 corresponds approximately to the thickness of the printed circuit board 17.
  • the slot 12 of the antenna 10 is with its central part 21 at a comparatively small distance, e.g. 1 mm, in the middle of the front edge 19, i.e. the thin end face of the circuit board 17 is arranged.
  • the two legs 22, 23 of the sheet metal part 11 are laterally on the side edges 25, 26 of the circuit board 17 with a small distance.
  • the antenna 10 is kept loose by the spring property of the sheet metal part 11.
  • the antenna In order to support the spring properties and to maintain the aforementioned small distances between the antenna 10 and the circuit board edges 19, 25, 26, the antenna has continuous stiffening ribs 29, 30 in its central part 21 above and below the slot 12. Further, the middle part 21 is e.g. bent a kink 32 very slightly V-shaped out of its actual plane. The same effect results from a very flat, U-shaped arch of the middle part 21.
  • One leg 22 of the sheet metal part 11 is significantly longer than the other leg 23.
  • the slot 12 is located throughout the entire length of the middle part 21, to a substantial extent in the longer leg 22 and only to a very small extent in the shorter leg 23.
  • connection points 13, 14 are located in the end region of the slot 12 in the longer leg 22. They are designed as spring contacts which are formed from (slot material) during the manufacture of the slot 12. In the assembled state of the printed circuit board 17 and slot antenna 10, they make contact with associated contacts on the printed circuit board 17. These contacts can either be arranged on the same side of the plate 17 or individually on the two sides of the plate 17.
  • the circuit board 17 of a radio of the type described generally has a ground surface 18. This covers a substantial part of the plate surface, e.g. forms the ground surface 18 a separate layer of a multilayer plate 17.
  • FIG. 4 shows a top view of the printed circuit board 17 with the ground surface 18 and the attached antenna 10. The edge region of the plate 17 is essentially in the region 20 adjacent to the slot antenna 10 Ground area 18 free. One of the contacts of the printed circuit board 17 is then located at the location of a remaining ground surface in the edge region mentioned and thus forms a ground point.
  • the slot antenna 10 and the printed circuit board 17 are further matched in terms of size and mechanically to one another and to the housing of the radio which completely surrounds these parts and which is not shown. This means that the coordination is such that, in the assembled state, all of the inner parts are connected and held together in an electrically and mechanically stable manner.
  • the printed circuit board 17 this means that it is fixed in the housing by associated holding elements.
  • the antenna 10 that it is guided orthogonally and at the end to the printed circuit board 17 at several points by mechanical elements and is thus held in a stable position.
  • the kink 32 and the stiffening ribs 29, 30 provide elastic, constant, well-defined distances between the antenna 10 and the dielectric materials of the housing and the plate 17.
  • FIG. 5 shows the side view of the inner elements of a second radio device of the type discussed here.
  • the electronics are distributed over two circuit boards 16, 17 arranged parallel to one another.
  • the slot 12 of the antenna 10 is advantageously located centrally and parallel between the two plates 16, 17.
  • the sheet metal part 11 or the antenna 10 is leaned closely against the end edges 19 of the two plates 16, 17.
  • the structure is generally such that the surfaces of the antenna 10 are arranged essentially orthogonally to the surfaces of the one or two printed circuit board (s) 16, 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
EP19950102317 1994-02-24 1995-02-20 Appareil radio portatif Expired - Lifetime EP0669672B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH559/94 1994-02-24
CH55994 1994-02-24
CH55994 1994-02-24

Publications (2)

Publication Number Publication Date
EP0669672A1 true EP0669672A1 (fr) 1995-08-30
EP0669672B1 EP0669672B1 (fr) 1999-12-29

Family

ID=4189823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950102317 Expired - Lifetime EP0669672B1 (fr) 1994-02-24 1995-02-20 Appareil radio portatif

Country Status (2)

Country Link
EP (1) EP0669672B1 (fr)
DE (1) DE59507497D1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851530A2 (fr) * 1996-12-28 1998-07-01 Lucent Technologies Inc. Antenne dans terminaux sans fils
WO1999048168A1 (fr) * 1998-03-19 1999-09-23 Honeywell Ag Unite d'installation electrique encastree comportant une antenne
GB2345208A (en) * 1998-12-23 2000-06-28 Nokia Mobile Phones Ltd An antenna for edge mounting on a PCB
EP1024552A2 (fr) * 1999-01-26 2000-08-02 Siemens Aktiengesellschaft Antenne pour terminaux de radiocommunication sans fil
WO2002089246A2 (fr) * 2001-04-27 2002-11-07 Tyco Electronics Logistics Ag Antenne a fente a diversite
WO2002095869A1 (fr) * 2001-05-25 2002-11-28 Koninklijke Philips Electronics N.V. Dispositif de radiocommunication a fente rayonnante
WO2004034512A1 (fr) * 2002-10-08 2004-04-22 Leopold Kostal Gmbh & Co. Kg Ensemble circuit electronique a antenne integree
US7042402B2 (en) 2004-05-05 2006-05-09 Tdk Corporation Planar antenna
WO2009012796A1 (fr) * 2007-07-24 2009-01-29 Pepperl + Fuchs Gmbh Antenne à fentes et procédé d'identification par radiofréquence (rfid)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410890A (en) * 1981-05-06 1983-10-18 The United States Of America As Represented By The Field Operations Bureau Of The Fcc VHF Directional receiver
DE3214449A1 (de) * 1982-04-20 1983-10-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Miniaturisierter funkempfaenger
WO1991002386A1 (fr) * 1989-07-27 1991-02-21 SIEMENS AKTIENGESELLSCHAFT öSTERREICH Dispositif d'emission et de reception pour appareils portatifs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410890A (en) * 1981-05-06 1983-10-18 The United States Of America As Represented By The Field Operations Bureau Of The Fcc VHF Directional receiver
DE3214449A1 (de) * 1982-04-20 1983-10-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Miniaturisierter funkempfaenger
WO1983003716A1 (fr) * 1982-04-20 1983-10-27 Schwanitz, Manfred Circuit d'antenne pour recepteur radio miniaturise
WO1991002386A1 (fr) * 1989-07-27 1991-02-21 SIEMENS AKTIENGESELLSCHAFT öSTERREICH Dispositif d'emission et de reception pour appareils portatifs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IK GUEN CHOI ET AL.: "UHF tapered bent-slot antenna for small size portable phone", VEHICULAR TECHNOLOGY SOCIETY 42ND VTS CONFERENCE, vol. 1, 10 May 1992 (1992-05-10), DENVER COLORADO, pages 9 - 12, XP000339671 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851530A3 (fr) * 1996-12-28 2000-07-26 Lucent Technologies Inc. Antenne dans terminaux sans fils
EP0851530A2 (fr) * 1996-12-28 1998-07-01 Lucent Technologies Inc. Antenne dans terminaux sans fils
WO1999048168A1 (fr) * 1998-03-19 1999-09-23 Honeywell Ag Unite d'installation electrique encastree comportant une antenne
GB2345208A (en) * 1998-12-23 2000-06-28 Nokia Mobile Phones Ltd An antenna for edge mounting on a PCB
EP1024552A3 (fr) * 1999-01-26 2003-05-07 Siemens Aktiengesellschaft Antenne pour terminaux de radiocommunication sans fil
EP1024552A2 (fr) * 1999-01-26 2000-08-02 Siemens Aktiengesellschaft Antenne pour terminaux de radiocommunication sans fil
WO2002089246A3 (fr) * 2001-04-27 2003-06-05 Tyco Electronics Logistics Ag Antenne a fente a diversite
WO2002089246A2 (fr) * 2001-04-27 2002-11-07 Tyco Electronics Logistics Ag Antenne a fente a diversite
US6788266B2 (en) 2001-04-27 2004-09-07 Tyco Electronics Logistics Ag Diversity slot antenna
WO2002095869A1 (fr) * 2001-05-25 2002-11-28 Koninklijke Philips Electronics N.V. Dispositif de radiocommunication a fente rayonnante
WO2004034512A1 (fr) * 2002-10-08 2004-04-22 Leopold Kostal Gmbh & Co. Kg Ensemble circuit electronique a antenne integree
US7042402B2 (en) 2004-05-05 2006-05-09 Tdk Corporation Planar antenna
WO2009012796A1 (fr) * 2007-07-24 2009-01-29 Pepperl + Fuchs Gmbh Antenne à fentes et procédé d'identification par radiofréquence (rfid)
JP2010534435A (ja) * 2007-07-24 2010-11-04 ペッパール ウント フュフス ゲゼルシャフト ミット ベシュレンクテル ハフツング スロットアンテナ及びｒｆｉｄ方法
US7999736B2 (en) 2007-07-24 2011-08-16 Pepperl + Fuchs Gmbh Slot antenna and method for its operation
US8723727B2 (en) 2007-07-24 2014-05-13 Pepperl + Fuchs Gmbh Slot antenna and RFID method

Also Published As

Publication number Publication date
EP0669672B1 (fr) 1999-12-29
DE59507497D1 (de) 2000-02-03

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