WO2008014762A1 - Antenne F inversée - Google Patents

Antenne F inversée Download PDF

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Publication number
WO2008014762A1
WO2008014762A1 PCT/DE2007/001334 DE2007001334W WO2008014762A1 WO 2008014762 A1 WO2008014762 A1 WO 2008014762A1 DE 2007001334 W DE2007001334 W DE 2007001334W WO 2008014762 A1 WO2008014762 A1 WO 2008014762A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
signal
main radiator
strip
antennas
Prior art date
Application number
PCT/DE2007/001334
Other languages
German (de)
English (en)
Inventor
Hans-Jörg REINHEIMER
Jakob Heierli
Original Assignee
Reel Reinheimer Elektronik Gmbh
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 Reel Reinheimer Elektronik Gmbh filed Critical Reel Reinheimer Elektronik Gmbh
Publication of WO2008014762A1 publication Critical patent/WO2008014762A1/fr

Links

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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • 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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the invention relates to an inverted F antenna (IFA) with a strip-shaped main radiator and perpendicularly oriented strip-shaped signal and ground connections, wherein the ground connection associated with one end of the main radiator and the signal connection is arranged adjacent thereto, wherein the antenna as a one-piece element of a made flat metal sheet strips and the surface of the main radiator is aligned perpendicular to the ground reference surface.
  • IFA inverted F antenna
  • the IFA is known as a short-circuit reversed L antenna with an open rod-shaped main radiator.
  • the main radiator is aligned parallel to the ground reference surface. About the L-leg, the signal is passed through the ground reference surface insulated.
  • the main radiator is extended beyond the outgoing L-leg and connected via another leg in short circuit to the ground reference surface. The entire arrangement resembles a reverse F.
  • the total length L of the main radiator is on tuned the transmission / reception frequency.
  • the distance H of the main radiator to the ground reference surface and the length L determine the input impedance of the antenna. About the distance S between the two F-legs, the impedance can be adjusted.
  • the sizing of IFA can be done with the help of known
  • Calculation programs are determined. For the range of common communication frequencies from 824 to 894 MHz and the civil GPS frequency of 1575 MHz. Are very compact dimensions. A disadvantage of the rod-shaped IFA is its low bandwidth.
  • An increase in the bandwidth and the radiation efficiency is achieved by a planar design of the main radiator parallel to the ground reference surface.
  • the short circuit to the ground reference surface is made via a strip-shaped connection.
  • the signal line is connected to the planar area at a suitable location.
  • the size and shape of the antenna plate, its distance to the ground reference surface, the shape and arrangement of the ground connection and the position of the signal connection point have a significant influence on the electrical properties of the planar IFA. Their dimensioning and construction is therefore much more complex than with the rod-shaped IFA.
  • an IFA which consists of strip-shaped tracks on an epoxy resin substrate.
  • the ladders lie on the edge of a board next to the ground reference surface.
  • the base of the antenna with the electronic elements for signal processing is therefore larger. Subsequent tuning of the geometric parameters is not possible.
  • the invention therefore an object of the invention to provide an easy to manufacture, subsequently tunable IFA with omnidirectional constant transmission / reception power, which can be connected to save space and without costly adjustment to the ground reference surface and the signal line on a circuit board.
  • the arrangement of the IFA on the board should allow an adaptation of the spatial shape of certain housing shapes and ensure a largely constant reception performance especially for hand-held devices, regardless of their orientation.
  • an antenna of the type mentioned in the present invention that two mutually angled antennas are provided, the signal connections are close to each other in relation to the resonance wavelength of the antenna and are connected to a signal combiner.
  • the bases of the signal and ground connections are expediently provided with nose-shaped projections for insertion into pads of a circuit board.
  • the angle is preferably 90 °.
  • the surface of the main radiator can also be bent in the longitudinal direction.
  • the manufacture of the antenna element as a one-piece element allows a closed geometric design using known simulation computer programs.
  • the geometric data can be transferred directly to a CAD-controlled production plant.
  • a flat metal sheet strip can be cut out in the desired shape either with the aid of a laser cutting machine or the mold can be produced in an etching system.
  • Mass production also punching possible.
  • the choice of metal can be adapted to the different production methods.
  • the finished antenna element has a stiffness for handling for installation and operation. Since the operating parameters of Depending on the geometric dimensions of the antenna element, these can be subsequently reworked eg by grinding, milling, filing or the like.
  • the nose-shaped projections at the foot points can be used for mounting in designated solder pads in a circuit board. For that both can
  • Assembly robots are used as well as untrained auxiliary staff.
  • the one-piece shape of the antenna element with the insertion lugs is adapted to the intended operation of the antenna with alignment of its surface perpendicular to the ground reference surface.
  • This solution is in contrast to the known experience, according to which the surface of the main radiator is to be aligned parallel to the ground reference surface when an increase in performance is to be achieved.
  • the thickness of the antenna strip acts like a conventional rod-shaped IFA.
  • the zenith-oriented effective thickness increases, so that the antenna according to the invention operates like an IFA with a continuously variable rod diameter.
  • the width of the antenna strip is determinant of the received power. Since in this case the effective rod diameter of an equivalent rod-shaped IFA decreases with increasing inclination of the device, this results in a preferred application of the antenna arrangement according to the invention for GPS reception.
  • the receiving power decreases with a rotation about the axis perpendicular to the horizontal alignment with increasing departure from the location of the transmitter.
  • two identical antennas can be placed at an angle to each other on the board, if it is ensured that their signal connections are close to each other in relation to the resonance wavelength of the antennas. Since the distance between the ground short-circuit and the signal feed in an IFA is usually much smaller than the length of the main radiator, the aforementioned condition is easily met if the free ends of the main radiator form the legs of the angle between the two antennas.
  • the two antennas behave as a single antenna when their signal connections are connected via a signal combiner.
  • the resulting reduction in the reception power of one antenna is complemented by a corresponding increase in the reception power of the other antenna.
  • the interference of the signals due to phase shifts usually occurring in the interconnection of antennas can not be observed.
  • the all-round effect of the new antennas can be further improved by bending the surfaces of the main radiator in the longitudinal direction. This additionally enables an adaptation of the antenna arrangement to cylindrical housing covers, as used for example in receivers for mounting on vehicles.
  • FIG. 2 shows an arrangement of two mutually angled antennas on a circuit board.
  • FIG. 1 shows a view of an integrally made of a flat sheet metal strip IFA with main radiator 1, signal connection 2 and ground connection 3. At the foot of the signal connection 2 and the ground connection 3 nose-shaped projections 4, 4 'are provided.
  • the usual geometric parameters L, H and S are given.
  • the height H is based on a mass reference surface 5.
  • the length L corresponds to a quarter of the resonance wavelength of the antenna.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne une antenne F inversée (IFA) comprenant une antenne (1, 1') active principale en forme de bande et des liaisons de signal (2, 2') et de masse (3, 3') orientées perpendiculairement par rapport à celle-ci. Selon l'invention, la liaison de masse (3, 3') est associée à une extrémité de l'antenne (1, 1') active principale et la liaison de signal (2, 2') est disposée dans le voisinage de celle-ci, l'antenne est fabriquée sous la forme d'un élément monobloc à partir d'une bande de tôle métallique plate et la surface de l'antenne (1, 1') active principale est dirigée perpendiculairement à la surface (5) de référence de masse. L'antenne F inversée (IFA) conforme à l'invention se caractérise en ce que deux antennes sont prévues, lesquelles sont orientées selon un certain angle l'une par rapport à l'autre et leurs liaisons de signal (2, 2') sont proches l'une de l'autre par rapport à la longueur d'onde de résonance des antennes et sont reliées par un concentrateur (7) de signal.
PCT/DE2007/001334 2006-07-30 2007-07-28 Antenne F inversée WO2008014762A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610035680 DE102006035680A1 (de) 2006-07-30 2006-07-30 Inverted F-Antenne
DE102006035680.2 2006-07-30

Publications (1)

Publication Number Publication Date
WO2008014762A1 true WO2008014762A1 (fr) 2008-02-07

Family

ID=38587970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/001334 WO2008014762A1 (fr) 2006-07-30 2007-07-28 Antenne F inversée

Country Status (2)

Country Link
DE (1) DE102006035680A1 (fr)
WO (1) WO2008014762A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023028421A1 (fr) * 2021-08-24 2023-03-02 Shure Acquisition Holdings, Inc. Antenne en quadrature pour applications sans fil portables

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013114223B4 (de) * 2013-12-06 2021-08-05 Hörmann KG Antriebstechnik Fernsteuerbare tür- oder torantriebsvorrichtung mit magnetischer antenne

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010040528A1 (en) * 2000-05-12 2001-11-15 Ari Vaisanen Symmetrical antenna structure and a method for its manufacture as well as an expansion card applying the antenna structure
EP1291968A1 (fr) * 2000-06-08 2003-03-12 Matsushita Electric Industrial Co., Ltd. Antenne et dispositif radio comprenant ladite antenne
EP1503450A1 (fr) * 2000-09-19 2005-02-02 Sony Corporation Dispositif d'antenne et module de carte de communication radio avec une telle antenne
GB2404497A (en) * 2003-07-30 2005-02-02 Peter Bryan Webster PCB mounted antenna
US20050093752A1 (en) * 2003-10-31 2005-05-05 Ping-Xi Cheng Antenna set for mobile devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010040528A1 (en) * 2000-05-12 2001-11-15 Ari Vaisanen Symmetrical antenna structure and a method for its manufacture as well as an expansion card applying the antenna structure
EP1291968A1 (fr) * 2000-06-08 2003-03-12 Matsushita Electric Industrial Co., Ltd. Antenne et dispositif radio comprenant ladite antenne
EP1503450A1 (fr) * 2000-09-19 2005-02-02 Sony Corporation Dispositif d'antenne et module de carte de communication radio avec une telle antenne
GB2404497A (en) * 2003-07-30 2005-02-02 Peter Bryan Webster PCB mounted antenna
US20050093752A1 (en) * 2003-10-31 2005-05-05 Ping-Xi Cheng Antenna set for mobile devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023028421A1 (fr) * 2021-08-24 2023-03-02 Shure Acquisition Holdings, Inc. Antenne en quadrature pour applications sans fil portables

Also Published As

Publication number Publication date
DE102006035680A1 (de) 2008-01-31

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