WO2005096439A1 - Antenne du type de construction plane - Google Patents

Antenne du type de construction plane Download PDF

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Publication number
WO2005096439A1
WO2005096439A1 PCT/EP2005/003177 EP2005003177W WO2005096439A1 WO 2005096439 A1 WO2005096439 A1 WO 2005096439A1 EP 2005003177 W EP2005003177 W EP 2005003177W WO 2005096439 A1 WO2005096439 A1 WO 2005096439A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna according
antenna
radiation surface
recess
radiation
Prior art date
Application number
PCT/EP2005/003177
Other languages
German (de)
English (en)
Inventor
Frank Mierke
Gerald Schillmeier
Original Assignee
Kathrein-Werke Kg
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 Kathrein-Werke Kg filed Critical Kathrein-Werke Kg
Publication of WO2005096439A1 publication Critical patent/WO2005096439A1/fr

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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
    • H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
    • 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
    • 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
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means

Definitions

  • the invention relates to an antenna of the planar type, in particular a patch antenna, and to a corresponding manufacturing method for such an antenna.
  • Patch antennas are known from the prior art. Such antennas comprise at least one electrically conductive radiation surface, which is arranged opposite a ground surface. A dielectric substrate is provided between the ground surface and the radiation surface. The radiation surface is connected to a feed line and emits an electromagnetic field when an AC voltage is applied to the feed line.
  • the object of the invention is therefore to provide an antenna of planar design, which is simple and Can be tuned in order to ensure in particular a desired radiation characteristic.
  • planar antenna according to the invention has surprising advantages. It differs fundamentally from other planar antenna arrangements, as they are also known.
  • a so-called slot antenna is known from OS 2003/0043084 AI.
  • slot antennas of this type it is not the outer metallic surfaces that are decisive, but rather the dimension or shape of the cutout in the metallic surface. It is therefore a completely different type of antenna.
  • Such slot antennas differ from the planar antenna according to the invention, inter alia, in that slot antennas are fed in laterally via a coaxial cable.
  • the inner conductor must be connected to one edge of the cutout and the outer conductor to the opposite edge of the cutout.
  • only only the inner conductor is connected to the radiation 'sflache in principle, in the inventive antenna.
  • the outer conductor is only contacted with the ground surface, so that there is no electro-galvanic contact between the inner and outer conductor as with the slot antenna.
  • Flat antenna arrangements are also known, for example in the form of a resonance antenna, from WO 98/38694 AI.
  • this is also a completely different type of antenna, namely a called planar inverted F antenna.
  • the radiation surface is electrically galvanically, ie conductively, connected to the ground surface, which is imperative.
  • the electrical connecting line provided between the radiation surface and the ground surface is also not arranged in a recess completely surrounded by a radiation surface.
  • the antenna according to the invention comprises a plurality of surfaces and layers arranged one above the other along an axial axis.
  • an electrically conductive ground surface is provided, on which a dielectric substrate layer is preferably arranged (wherein, in a modification of the invention, the dielectric can also consist of air).
  • an electrically conductive radiation surface can be arranged or provided on this substrate layer or above the dielectric, which is connected to an electrically conductive feed line.
  • the antenna is distinguished by the fact that at least one recess is provided, which is located in the axial direction within the radiation area in plan view, the recess exposing one end of the feed line or the upper end or the end region of the feed line comes.
  • This end of the feed line is in turn connected to the radiation surface via an electrically conductive connecting or connecting line.
  • the feed line can also be in one piece, ie be integrally connected to the connection or connecting cable, so that the feed line directly to the connecting cable passes, wherein 'the connection line preferably represents only a relative to the feed line curved or angled line section.
  • the cutout is designed in such a way that the connecting line is formed by part of the radiation surface. It is therefore not necessary to provide a separate connection line between the radiation surface and the feed line, but the connection line can be an integral part of the radiation surface. This simplifies the manufacture of the antenna, among other things.
  • one or more active and / or passive electrical components are provided in the connecting line.
  • the interposition of such electrical components results in a further possibility - in a simple manner, to match the radiation characteristics of the antenna.
  • the feed line is arranged in an opening which extends through the ground plane and the dielectric substrate layer.
  • the cross section of the recess is preferably at least as large as the cross section of the opening.
  • the at least one recess in plan view in the axial direction is essentially configured as a polygon or as a circle.
  • the substrate layer and / or the radiation surface and / or the ground surface can also be designed as a circle or as a polygon in plan view.
  • one or more further cutouts are provided in the radiation area, these cutouts extending from the peripheral edge of the patch or radiation area itself into the interior of the radiation area. This creates another possibility for simple tuning of the antenna.
  • the antenna is constructed as a multilayer structure.
  • connection line is formed by part of the radiation area. This simplifies the manufacture of the connection line, since it is no longer necessary • to produce a separate connection line in an intermediate step.
  • passive and / or active electrical components are also provided in the connecting line for improved tuning of the antenna and / or for influencing the radiation properties.
  • the connecting line can also have a flat structure, for example in the form of line branches in which the various active and / or passive components are arranged. This Anschlu.ss effet Kochs-branches can also be formed from therefore on the substrate on which the required therefor ⁇ sections and parts of the connection lines are realized with the optionally provided components.
  • Figure 1 is a plan view of an embodiment of the antenna according to the invention.
  • FIG. 2 a sectional view taken along lines I-I of the antenna of Figure 1;
  • FIGS 3 and 4 top views of two embodiments of the antenna according to the invention.
  • Figure 5 a representation corresponding to Figure 2, explaining the connection of a coaxial cable.
  • FIG 1 is a plan view of an embodiment of a . Patch antenna according to the invention shown.
  • the antenna comprises a rectangular dielectric substrate layer 3, on which an electrically conductive radiation or patch surface 4 is applied.
  • the radiation surface 4 is also rectangular and has a smaller extent than the substrate layer 3.
  • a circular recess 8 extends through the radiation surface 4, as a result of which part of the upper side of the dielectric layer 3 is exposed. In other words, the recess 8 is thus surrounded and limited by the conductive radiation surface 4.
  • This exposed part is shown hatched in Figure 1. It can be seen that the cutout is arranged at a point at which there is an opening 7 below the radiation surface, in which an feed line 5 for supplying current for the electrically conductive patch surface 4 is arranged.
  • the feed line runs vertically to the patch surface, but it is also conceivable that the feed line runs obliquely to the patch surface.
  • a connecting line 6 is provided which extends from the feed line to the edge of the recess.
  • FIG. 2 shows a sectional view along line II of FIG. 1, from which the layer structure of the patch antenna of FIG. 1 along an axial axis A can be seen.
  • the antenna comprises a ground surface 2, on which the dielectric substrate layer 3 is applied.
  • the radiation surface 4 is located on the substrate layer. From FIG. 2, it results in particular that the opening 7, in which the feed line 5 is arranged, extends through the ground surface and the dielectric substrate layer, a End 5a of the feed line protrudes over the top of the dielectric substrate layer into the recess 8 of the patch surface 4.
  • the end 5a is connected via the connecting line 6 to an edge of the patch surface 4 formed by the recess 8, so that an electrically conductive connection between the radiation surface 4 and the feed line 5 is established.
  • the connecting line 6 can be an integral part of the radiation surface, ie the recess 8 is provided in such a way that no through opening is produced, but rather a narrow section of the radiation surface projects into the opening 8 in the radial direction at a point on the edge of the opening, whereby this section forms the connecting or connecting line 6.
  • the cutout 8 can be provided in particular after the production of the layer structure shown in FIG. 2, the cutout being gradually increased, for example, and the radiation characteristics of the antenna are measured after each intermediate step. In this way, a desired radiation characteristic can be set successively. It is advantageous here that the cutout 8 is located above the feed line 5, since the radiation characteristic can be influenced particularly well at this point.
  • FIG. 3 shows a further embodiment of the patch antenna according to the invention in a top view.
  • the recess 8 ' is rectangular and is arranged in the central region of the edge 4a.
  • the width al of the recess is preferably at least 1/20 and at most half of the entire length of the edge 4a.
  • the depth bl of the recess 8 ' can also be selected differently and is preferably above 1/40 and below 1/2 of the length of the edge 4a.
  • the part of the radiation or patch surface 4 which is removed through the cutout 8 ' is indicated by hatching in FIG.
  • a plurality of such recesses 8' or comparable recesses can also be provided, for example on the left-hand side of the radiation or patch surface 4 in FIG. 3, but also on the opposite lower and / or right side. In other words, two, three or more of these recesses can also be provided on one or more sides. In FIG. 3, only a further recess 8 ′′ on the left side edge 4a of the patch or Radiation area 4 shown.
  • FIG. 4 shows a plan view of a further embodiment of the patch antenna according to the invention, a recess 8 ′ being provided in the upper left corner in the patch or radiation surface 4.
  • the recess is triangular with legs a2 and b2.
  • the removed part 8 'of the radiation surface 4 is again indicated by hatching in FIG.
  • the provision of the further cutouts, examples of which are shown in FIG. 3 and FIG. 4, results in a further possibility of simply tuning a patch antenna in the desired manner.
  • FIG. 4 shows a plan view of a further embodiment of the patch antenna according to the invention, a recess 8 ′ being provided in the upper left corner in the patch or radiation surface 4.
  • the recess is triangular with legs a2 and b2.
  • the removed part 8 'of the radiation surface 4 is again indicated by hatching in FIG.
  • a further cutout 8 ′′ is indicated by dashed lines at the geometrically opposite corner.
  • a further cutout can also be provided at the bottom left or at the top right corner. Cutouts of this type are also possible on three or on all four Corners
  • both the feed line 5 and the connecting line 6 can be formed in one piece, ie in one piece, for example in the form that a correspondingly bent or bent line section is used. In other words, the feed line goes directly into the Connection line over.
  • the patch antenna 4 would hover above the ground surface 2. It would be conceivable here that the patch antenna 4 could only be mechanically held and fixed only by the feed and connection line 5, 6, in particular in that the connection and feed line consisted of a part of a metallic plate-shaped patch antenna is formed.
  • FIG. 5 shows a representation corresponding to FIG. 2.
  • a coaxial connecting line 21 is also shown in FIG. 5, specifically with an inner conductor 21a and an outer conductor 21b.
  • the electrically conductive outer conductor 21b is guided at least to the lower ground surface 2 and there is electrically-galvanically contacted, usually soldered, to the ground surface 2 at a point 23 (circumferentially on the outer circumference of the outer conductor).
  • the inner conductor 21a can protrude beyond the end of the outer conductor 21b and thus lead beyond the ground surface 2.
  • the inner conductor 21a can be electrically-galvanically connected to the connecting line 6 at its upper end 5a at a point 25 (also usually soldered here).
  • the inner conductor can pass directly into the so-called connecting line 6, forming a bend at the point 25, which then connects to the upper patch surface at the edge of the recess 8. before 4 is electrically-galvanically connected, usually by soldering.
  • the inner conductor 21a merges into the so-called feed line 5 according to FIGS. 1 to 7 and optionally into the connecting line 6.
  • the feed line 5 can extend from the upper patch surface 4 through the channel-shaped opening 7 extending through the substrate layer 3 and be electrically connected at the lower end, for example, to the inner conductor 21a of the coaxial line 21.
  • a coaxial connection can also be provided, particularly at the level of the lower ground surface 2, the outer conductor of which is connected to the ground surface 2 and the inner conductor of which is connected to the feed line 5.
  • a corresponding coaxial cable 21 can thus be connected to this coaxial connection, for which purpose the ⁇ coaxial cable 21 is then preferably also equipped at its end with a coaxial connector in order to be connected to the coaxial cable connection provided on the antenna device.

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  • Waveguide Aerials (AREA)

Abstract

Antenne du type de construction plane (1), caractérisée en ce qu'elle comprend une surface de mise à la masse électroconductrice (2), une surface de rayonnement conductrice (4) disposée à distance latérale de la surface de mise à la masse et sensiblement parallèlement à celle-ci, et un diélectrique prévu entre la surface de mise à la masse (2) et la surface de rayonnement (4). La surface de rayonnement (4) est connectée électriquement avec une ligne d'alimentation électroconductrice (5). Il est prévu au moins un évidement (8) qui est ménagé dans la surface de rayonnement (4) et qui est entouré par celle-ci. Une extrémité supérieure, ou une portion d'extrémité supérieure (5a) de la ligne d'alimentation (5), s'applique dans la zone de l'évidement et s'étend dans une ligne de connexion (6), ou bien est connectée avec une ligne de connexion (16) qui, de son côté, est connectée avec la surface de rayonnement (13).
PCT/EP2005/003177 2004-04-01 2005-03-24 Antenne du type de construction plane WO2005096439A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410016157 DE102004016157A1 (de) 2004-04-01 2004-04-01 Antenne nach planarer Bauart
DE102004016157.7 2004-04-01

Publications (1)

Publication Number Publication Date
WO2005096439A1 true WO2005096439A1 (fr) 2005-10-13

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Family Applications (1)

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PCT/EP2005/003177 WO2005096439A1 (fr) 2004-04-01 2005-03-24 Antenne du type de construction plane

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DE (1) DE102004016157A1 (fr)
WO (1) WO2005096439A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012110215A1 (fr) * 2011-02-17 2012-08-23 Kathrein-Werke Kg Antenne patch et procédé de réglage de fréquence d'une antenne patch de ce type
GB2494435A (en) * 2011-09-08 2013-03-13 Roke Manor Research Radio communication over a transmission medium using surface waves

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4987421A (en) * 1988-06-09 1991-01-22 Mitsubishi Denki Kabushiki Kaisha Microstrip antenna
US5675346A (en) * 1995-03-23 1997-10-07 Kabushiki Kaisha Toyota Chuo Kenkyusho Annular microstrip antenna element and radial line antenna system employing the same
US20040051666A1 (en) * 2001-02-16 2004-03-18 Integral Technologies, Inc. Low cost antennas using conductive plastics or conductive composites

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707535A1 (de) * 1997-02-25 1998-08-27 Rothe Lutz Dr Ing Habil Folienstrahler
US6762729B2 (en) * 2001-09-03 2004-07-13 Houkou Electric Co., Ltd. Slotted bow tie antenna with parasitic element, and slotted bow tie array antenna with parasitic element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4987421A (en) * 1988-06-09 1991-01-22 Mitsubishi Denki Kabushiki Kaisha Microstrip antenna
US5675346A (en) * 1995-03-23 1997-10-07 Kabushiki Kaisha Toyota Chuo Kenkyusho Annular microstrip antenna element and radial line antenna system employing the same
US20040051666A1 (en) * 2001-02-16 2004-03-18 Integral Technologies, Inc. Low cost antennas using conductive plastics or conductive composites

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
TANAKA M ET AL: "SUPPRESSING UNDESIRED MODES IN A HIGHER-ORDER MODE MICROSTRIP RING PATCH ANTENNA", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART I - COMMUNICATIONS, SCRIPTA TECHNICA. NEW YORK, US, vol. 85, no. 3, PART 1, March 2002 (2002-03-01), pages 9 - 18, XP001076583, ISSN: 8756-6621 *
ZHI NING CHEN ET AL: "Broadband rectangular slotted plate antenna", ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, 2000. IEEE JULY 16-21, 2000, PISCATAWAY, NJ, USA,IEEE, vol. 2, 16 July 2000 (2000-07-16), pages 640 - 643, XP010514622, ISBN: 0-7803-6369-8 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012110215A1 (fr) * 2011-02-17 2012-08-23 Kathrein-Werke Kg Antenne patch et procédé de réglage de fréquence d'une antenne patch de ce type
GB2494435A (en) * 2011-09-08 2013-03-13 Roke Manor Research Radio communication over a transmission medium using surface waves
US9337895B2 (en) 2011-09-08 2016-05-10 Roke Manor Research Limited Electromagnetic surface wave guiding medium having a first surface with coupling nodes repositionable at arbitrary locations
GB2494435B (en) * 2011-09-08 2018-10-03 Roke Manor Res Limited Apparatus for the transmission of electromagnetic waves

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Publication number Publication date
DE102004016157A1 (de) 2005-11-03

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