EP0107676A1 - Circuit d'antenne pour recepteur radio miniaturise. - Google Patents

Circuit d'antenne pour recepteur radio miniaturise.

Info

Publication number
EP0107676A1
EP0107676A1 EP83901197A EP83901197A EP0107676A1 EP 0107676 A1 EP0107676 A1 EP 0107676A1 EP 83901197 A EP83901197 A EP 83901197A EP 83901197 A EP83901197 A EP 83901197A EP 0107676 A1 EP0107676 A1 EP 0107676A1
Authority
EP
European Patent Office
Prior art keywords
radio receiver
antenna
circuit board
receiver according
dipole
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
EP83901197A
Other languages
German (de)
English (en)
Other versions
EP0107676B1 (fr
Inventor
Manfred Schwanitz
Dietrich Gartner
Wolfgang Dressler
Jorg Schenk
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.)
Alcatel Lucent Deutschland AG
Alcatel Lucent NV
Original Assignee
Standard Elektrik Lorenz AG
International Standard Electric Corp
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 Standard Elektrik Lorenz AG, International Standard Electric Corp filed Critical Standard Elektrik Lorenz AG
Publication of EP0107676A1 publication Critical patent/EP0107676A1/fr
Application granted granted Critical
Publication of EP0107676B1 publication Critical patent/EP0107676B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to a miniaturized mobile radio receiver according to the preamble of claim 1.
  • Such a miniaturized mobile radio receiver is known from DE-GM 67 52 498.
  • the radio receiver described there has two antenna wires to form an elongated dipole, which run within a housing formed from two plastic shells.
  • the shells are held together on their narrow sides by two caps, which are electrically conductive and are connected to the ends of the antennas as capacitive loads.
  • Conductor tracks of a printed circuit board in the housing which run in the vicinity of the antenna wires, are strongly coupled to them and conductor tracks which extend from one to the other dipole half represent an ohmic-capacitive shunt of the antenna. This increases the loss resistance and the antenna replacement capacity.
  • the invention has for its object to provide an improved miniaturized mobile radio receiver. This object is achieved with the means specified in claim 1. Embodiments of the invention can be found in the subclaims.
  • a television antenna is known. This consists of a housing in which a half-wave dipole, the elements of which consist of foils on a card, and a preamplifier are located as the antenna. A coaxial cable is connected to the base of the antenna and leads to the preamplifier. Apart from the foils, the plate does not have any circuit traces.
  • the decrease in the effective height and the efficiency of the antenna through the surrounding conductor tracks is so greatly reduced that very good sensitivity is achieved with the radio receiver.
  • FIG. 1 is a very simplified representation of the antenna and its equivalent circuit.
  • Fig. 2 is an equivalent circuit diagram of the antenna at a separation of the conductor tracks for RF signals
  • Fig. 3 is a perspective view of circuit boards with an antenna.
  • a circuit board 1 is shown, in which also the better overview because of conductor tracks and Components are not shown.
  • wires 2 are arranged which form a stretched dipole of an antenna.
  • capacitive loads are applied in the form of metallic surfaces.
  • capacitances C S form, two of which are shown symbolically and the value of which, among other things, was from the wires 2 depends on the conductor tracks. If conductor tracks extend from one dipole half to the other, the capacitances also act from one dipole half to the other
  • the equivalent circuit diagram of the antenna is shown in FIG. 1c). It consists of a generator with the open circuit voltage U O in series with a loss resistance R A and an antenna capacitance C A. In parallel with this are the capacitances C S , combined into a single one, and a resistor R S. This results in a capacitive voltage division for the connected consumer (not shown), which greatly reduces the voltage to be output by the antenna, and there is a loss due to the ohmic component according to the resistance R S.
  • the entire conductor tracks of the circuit board 1 for high-frequency signals (HF) are separated in the base region of the dipole.
  • This Separation acting only for HF signals is indicated in FIG. 1a) by the dashed line 4.
  • resistances R of about 100 kohm are switched on at this point, and resonance resonant circuits are switched on in conductor tracks that connect low-resistance sources and loads.
  • the resistors must have low-capacitance and low-inductance designs.
  • FIG. 2 again shows the equivalent circuit diagram of the antenna, a high-resistance resistor R and a resonant circuit having the frequency F 0 now being present in the branch of the capacitance C S and the resistor R S.
  • the frequency F 0 of the resonance oscillation travel is selected so that it approximately corresponds to the frequency of the signal to be received.
  • all resonant circuits of the low-eared conductor tracks crossing line 4 can be combined.
  • the wires of the resonant circuits are twisted together and wound on a coil body in a ferrite shell core.
  • the number of Win applications is chosen so that the frequency F 0 is reached.
  • the wires 2 of the antenna run on the longer edge of the printed circuit board 1.
  • Some radio receivers have two printed circuit boards 1 and 5, of which the printed circuit board 5 is smaller than the printed circuit board 1, for example.
  • the circuit boards 1 and 5 are shown in perspective in FIG. 3.
  • the wire 2 of the one dipole half runs on the edge of the circuit board 1 and the wire 2 of the other dipole half runs on the edge of the circuit board 5.
  • the base point of the antenna can be arranged on one or the other circuit board. In Fig. 3 it is attached to the circuit board 5.
  • At the bottom of the circuit board 1 there is a sheet 6 and the wire 2 of the lower dipole half is connected to this sheet 6 and thus acts as a capacitive load on the antenna.
  • a sheet 7 is attached to the upper edge, which is connected to a metallized surface 8 on the circuit board 5. With the plate 7 and the surface 8, the end of the wire 2 of the upper dipole half is connected, so that a capacitive load on the antenna arises. Arrangements are also only possible with sheet metal or metallic surfaces or a combination other than the one shown as a capacitive load.
  • the circuit board 1 has now been used for the separation of the HF signals for all conductor tracks exceeding this area.
  • resonance resonant circuits with the frequency F O are inserted into the high-resistance conductor tracks, resistors R (only one resistor shown) with a low-capacitance and low inductance design, and into the low-resistance conductor tracks.
  • the resonant resonant circuits can all be arranged in a shell core.

Abstract

Le récepteur radio miniaturisé, mobile, présente comme antenne un dipôle allongé. Les fils d'antenne s'étendent le long du bord d'une ou plusieurs plaquettes de circuits imprimés du récepteur et sont reliés, à leur extrémité, à des surfaces conductrices. Les pistes conductrices de la ou des plaquettes, qui s'étendent parallèlement à l'antenne forment une dérivation ohmique-capacitive et sont donc, pour les signaux HF, découplées aux alentours de la base de l'antenne.
EP19830901197 1982-04-20 1983-04-16 Circuit d'antenne pour recepteur radio miniaturise Expired - Lifetime EP0107676B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3214449 1982-04-20
DE19823214449 DE3214449A1 (de) 1982-04-20 1982-04-20 Miniaturisierter funkempfaenger

Publications (2)

Publication Number Publication Date
EP0107676A1 true EP0107676A1 (fr) 1984-05-09
EP0107676B1 EP0107676B1 (fr) 1992-03-18

Family

ID=6161315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830901197 Expired - Lifetime EP0107676B1 (fr) 1982-04-20 1983-04-16 Circuit d'antenne pour recepteur radio miniaturise

Country Status (4)

Country Link
US (1) US4577195A (fr)
EP (1) EP0107676B1 (fr)
DE (2) DE3214449A1 (fr)
WO (1) WO1983003716A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302876A1 (de) * 1983-01-28 1984-08-02 Robert Bosch Gmbh, 7000 Stuttgart Dipolantenne fuer tragbare funkgeraete
DE3520983A1 (de) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Antenne fuer ein funksende- und -empfangsgeraet
US5218188A (en) * 1989-10-24 1993-06-08 Norand Corporation Compact hand-held RF data terminal
US5841402A (en) * 1992-03-27 1998-11-24 Norand Corporation Antenna means for hand-held radio devices
US5555459A (en) * 1992-03-27 1996-09-10 Norand Corporation Antenna means for hand-held data terminals
DE59507497D1 (de) * 1994-02-24 2000-02-03 Ascom Ag Bern Tragbares Funkgerät
JPH10197662A (ja) * 1996-12-28 1998-07-31 Casio Comput Co Ltd 受信装置
JP2000059120A (ja) 1998-08-12 2000-02-25 Sony Corp アンテナ装置及び携帯無線機
GB2409935B (en) * 2004-01-09 2007-02-28 Zarlink Semiconductor Ltd Electronic assembly
RU2560807C1 (ru) * 2014-03-27 2015-08-20 Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" (ФГУП "ВНИИА") Широкополосное двухкомпонентное приемное антенное устройство
RU2582551C2 (ru) * 2014-07-02 2016-04-27 федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский государственный политехнический университет" (ФГАОУ ВО "СПбПУ") Способ компенсации магнитного поля коаксиальной линии

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6752498U (de) 1968-06-01 1969-03-06 Telefunken Patent Personenrufempfaenger mit kapazitiver antenne
US3573628A (en) * 1968-07-15 1971-04-06 Motorola Inc Antenna for miniature radio receiver including portions of receiver housing and chassis
JPS5441192B2 (fr) * 1973-08-01 1979-12-07
US4004228A (en) * 1974-04-29 1977-01-18 Integrated Electronics, Ltd. Portable transmitter
US3980952A (en) 1975-04-07 1976-09-14 Motorola, Inc. Dipole antenna system having conductive containers as radiators and a tubular matching coil
US3961331A (en) * 1975-05-21 1976-06-01 The United States Of America As Represented By The Secretary Of The Army Lossy cable choke broadband isolation means for independent antennas
JPS583405B2 (ja) * 1976-09-24 1983-01-21 日本電気株式会社 小型無線機用アンテナ
GB2029112B (en) * 1978-06-08 1983-03-30 Murphy A Television aerial
US4313119A (en) * 1980-04-18 1982-01-26 Motorola, Inc. Dual mode transceiver antenna
FR2498819B1 (fr) * 1981-01-23 1985-05-31 Thomson Csf Antenne de petite dimension

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8303716A1 *

Also Published As

Publication number Publication date
US4577195A (en) 1986-03-18
WO1983003716A1 (fr) 1983-10-27
DE3382531D1 (de) 1992-04-23
DE3214449A1 (de) 1983-10-27
EP0107676B1 (fr) 1992-03-18

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