EP0761021A1 - Antenne mit elektrisch niedriger bauhöhe - Google Patents
Antenne mit elektrisch niedriger bauhöheInfo
- Publication number
- EP0761021A1 EP0761021A1 EP96907252A EP96907252A EP0761021A1 EP 0761021 A1 EP0761021 A1 EP 0761021A1 EP 96907252 A EP96907252 A EP 96907252A EP 96907252 A EP96907252 A EP 96907252A EP 0761021 A1 EP0761021 A1 EP 0761021A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- antenna
- conductive surface
- frequency range
- bridge
- resonance
- 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
Links
Classifications
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
Definitions
- the invention relates to an antenna of the type mentioned in the preamble of claim 1.
- An antenna of this type can be used very advantageously in radio operation on motor vehicles for mobile radio services. In the GHz frequency range in particular, it has the advantage of combining a small overall height with the desired directional diagram.
- the invention is based on antennas of this type, as are known from DAS 2153 827 and DAS 2633 757 and from European patent applications EP 0176311, EP 0177362 and EP 0163454.
- the antennas described there essentially consist of an L-shaped flat part over a conductive base or are designed as U-shaped flat antennas.
- the principle of operation of these antennas is to have a resonance at the operating frequency, the resonance being characterized by a balanced reactive power balance between the magnetic reactive power and the capacitive reactive power, so that an essentially real or non-real one is provided at the antenna connection point provided there is a strongly reactive impedance. This resonance effect is in the
- all antennas of this type are monofrequency antennas, ie they are operated at their basic resonance frequency, which is physically a prerequisite for the directional diagram having a circular characteristic when set up over a conductive surface.
- antennas __ which can be used in several frequency ranges at the same time.
- An important example is the use of a mobile radio antenna both in the D mobile radio network at approx. 0.9 GHz and in the frequency range of the E mobile radio network at approximately twice the frequency (1.8
- Fig. 2 Antenna like Fig. 1, but with an almost circular first conductive surface and a missing circle segment.
- Fig. 4 Antenna as Fig. 3 with slots 10 in the bridge 4 for tuning the self-inductance of the bridge in the different frequency ranges.
- the slots of different lengths cause resonances in two mutually adjacent higher frequency ranges.
- the basic principle of operation of the antenna according to the invention is based on the fact that, with the aid of the natural resonance of slots and recesses on the conductive surfaces of the antenna, an antenna resonance is achieved in different frequency ranges. In the simplest way, this can be brought about by the fact that the slots 10 in the first frequency range only slightly influence the current distribution on the antenna and, owing to the natural resonance of the slot arrangements, the current flow on the antenna is designed such that resonance also occurs in this frequency range with respect to the antenna impedance consists.
- the entire first conductive surface 1 acts and is only slightly impaired in its effect by the slots 10, so that the antenna in this range acts like the antennas described in accordance with the prior art are.
- slots 10 are introduced in the vicinity of the edge zones 11, which in particular suppress the highly effective edge currents in the high-frequency range.
- a current path 12 is formed between the connection point 3 and the bridge 4, on which the antenna currents flow.
- the shape of the antenna can be freely selected within wide limits with regard to the basic mode of operation.
- the described effect of the antenna of this type can be brought about if the first conductive surface is e.g. Rectangular shape, trapezoidal shape, circular sector shape or circular shape with a missing circular segment.
- a condition of symmetry with regard to the surface shape and the arrangement of the slots does not necessarily have to be observed either.
- the corresponding effective zones for an antenna with a circular shape and a missing circular segment are entered in FIG. 2.
- the resonance frequency in the first frequency range can be included in the dimensioning of the first conductive surface 1 in a known manner.
- such slits can be introduced into the slits 10, which ends at their end opposite the edge of the conductive surface 1 with an inductively acting cutout from the conductive surface 1.
- the edges of these cutouts 14 act inductively due to their greater length, in contrast to the slot, which has a strong capacitive effect due to the small slot width.
- the reactance which arises at the open end of the slot can be designed to have a high resistance in the second frequency range, so that edge currents on the first conductive surface 1 are substantially suppressed. This arrangement has the effect that the zones marked 11 in FIG.
- the bridge 4 mainly acts inductively.
- slots 10 are also made in the bridge 4 in order to use the changed inductance in a second frequency range in which the slots have 1/4 wavelength 'resonance at their open end, the resonance frequency of the antenna also produce in this frequency range.
- the length of the slots should be chosen to be approximately lambda / 4 for the frequency range of the E network; in the higher frequency range, only the inner zone 13 of the first conductive surface 1 near the edge 5 and the bridge 4 act in the main.
- a particularly advantageous embodiment of this antenna also covers the frequency of the global positioning system (GP). This is achieved in a simple manner in that by using several slots with slightly different lengths for the slots 10a and 10b in FIG. 5, resonance of the antenna at the GPS frequency (1574 MHz) is also achieved.
- the circle sector angle is 90 degrees, for example.
- the slots are arranged symmetrically to the bisector. The shorter, near the center line 6 slots have in this
- Example for suppression of currents in the electric network frequency range a length of 0.25 lambda.
- a length of 0.23 lambda was chosen for the longer slots in FIG. 5 in order to generate the resonance of the antenna on the GPS frequency.
- Such an antenna has the particular advantage of being easy to manufacture. If it is used over a conductive base plate or a mechanical support plate, then the first first conductive surface 1 and the bridge 4 can be made from one sheet in one operation together with the slots 10a and 10b with typically required slot widths of 0.5. ..1.5 mm are punched out. By bending the edge 5 at a right angle, the antenna with the lower edge of the bridge 4 is easily mounted on the counterweight. After matching the position of the slots and their dimensions such that
- An antenna according to the invention can e.g. 6, can also be designed with mutually congruent conductive surfaces 1 and 2.
- the outer jacket of the coaxial line 7 runs parallel to the surface 2, so that it does not disturb the electrical field perpendicular to the surfaces 1, 2.
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19510236 | 1995-03-21 | ||
DE19510236A DE19510236A1 (de) | 1995-03-21 | 1995-03-21 | Flächige Antenne mit niedriger Bauhöhe |
PCT/DE1996/000472 WO1996029757A1 (de) | 1995-03-21 | 1996-03-19 | Antenne mit elektrisch niedriger bauhöhe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0761021A1 true EP0761021A1 (de) | 1997-03-12 |
EP0761021B1 EP0761021B1 (de) | 1998-07-22 |
Family
ID=7757285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96907252A Expired - Lifetime EP0761021B1 (de) | 1995-03-21 | 1996-03-19 | Antenne mit elektrisch niedriger bauhöhe |
Country Status (5)
Country | Link |
---|---|
US (1) | US5850198A (de) |
EP (1) | EP0761021B1 (de) |
DE (2) | DE19510236A1 (de) |
ES (1) | ES2120811T3 (de) |
WO (1) | WO1996029757A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6043786A (en) * | 1997-05-09 | 2000-03-28 | Motorola, Inc. | Multi-band slot antenna structure and method |
DE19817573A1 (de) * | 1998-04-20 | 1999-10-21 | Heinz Lindenmeier | Antenne für mehrere Funkdienste |
US6127983A (en) * | 1998-10-08 | 2000-10-03 | The United States Of America As Represented By The Secretary Of The Navy | Wideband antenna for towed low-profile submarine buoy |
GB2382723B (en) * | 1998-12-22 | 2003-10-15 | Nokia Corp | Dual band antenna for a handset |
DE29823087U1 (de) * | 1998-12-28 | 2000-05-04 | Reel Reinheimer Elektronik Gmb | Breitbandige, linear polarisierte Mehrbereichsantenne, insbesondere für den mobilen Einsatz in Fahrzeugen |
WO2001028035A1 (en) | 1999-10-12 | 2001-04-19 | Arc Wireless Solutions, Inc. | Compact dual narrow band microstrip antenna |
US6414642B2 (en) * | 1999-12-17 | 2002-07-02 | Tyco Electronics Logistics Ag | Orthogonal slot antenna assembly |
JP2002076757A (ja) * | 2000-09-01 | 2002-03-15 | Hitachi Ltd | スロットアンテナを用いた無線端末 |
SE524825C2 (sv) * | 2001-03-07 | 2004-10-12 | Smarteq Wireless Ab | Antennkopplingsanordning samverkande med en intern första antenn anordnad i en kommunikationsanordning |
US6545647B1 (en) | 2001-07-13 | 2003-04-08 | Hrl Laboratories, Llc | Antenna system for communicating simultaneously with a satellite and a terrestrial system |
US6670921B2 (en) | 2001-07-13 | 2003-12-30 | Hrl Laboratories, Llc | Low-cost HDMI-D packaging technique for integrating an efficient reconfigurable antenna array with RF MEMS switches and a high impedance surface |
US6433756B1 (en) | 2001-07-13 | 2002-08-13 | Hrl Laboratories, Llc. | Method of providing increased low-angle radiation sensitivity in an antenna and an antenna having increased low-angle radiation sensitivity |
US6739028B2 (en) * | 2001-07-13 | 2004-05-25 | Hrl Laboratories, Llc | Molded high impedance surface and a method of making same |
US6441792B1 (en) * | 2001-07-13 | 2002-08-27 | Hrl Laboratories, Llc. | Low-profile, multi-antenna module, and method of integration into a vehicle |
US20070211403A1 (en) * | 2003-12-05 | 2007-09-13 | Hrl Laboratories, Llc | Molded high impedance surface |
DE102006039357B4 (de) * | 2005-09-12 | 2018-06-28 | Heinz Lindenmeier | Antennendiversityanlage zum Funkempfang für Fahrzeuge |
DE102007017478A1 (de) * | 2007-04-13 | 2008-10-16 | Lindenmeier, Heinz, Prof. Dr. Ing. | Empfangsanlage mit einer Schaltungsanordnung zur Unterdrückung von Umschaltstörungen bei Antennendiversity |
EP2037593A3 (de) * | 2007-07-10 | 2016-10-12 | Delphi Delco Electronics Europe GmbH | Antennendiversityanlage für den relativ breitbandigen Funkempfang in Fahrzeugen |
DE102007039914A1 (de) * | 2007-08-01 | 2009-02-05 | Lindenmeier, Heinz, Prof. Dr. Ing. | Antennendiversityanlage mit zwei Antennen für den Funkempfang in Fahrzeugen |
DE102008003532A1 (de) * | 2007-09-06 | 2009-03-12 | Lindenmeier, Heinz, Prof. Dr. Ing. | Antenne für den Satellitenempfang |
PT2209221T (pt) * | 2009-01-19 | 2018-12-27 | Fuba Automotive Electronics Gmbh | Sistema de recepção para a soma de sinais de antena em fase |
DE102009011542A1 (de) * | 2009-03-03 | 2010-09-09 | Heinz Prof. Dr.-Ing. Lindenmeier | Antenne für den Empfang zirkular in einer Drehrichtung der Polarisation ausgestrahlter Satellitenfunksignale |
DE102009023514A1 (de) * | 2009-05-30 | 2010-12-02 | Heinz Prof. Dr.-Ing. Lindenmeier | Antenne für zirkulare Polarisation mit einer leitenden Grundfläche |
CN107093790B (zh) * | 2016-02-18 | 2020-05-12 | 元太科技工业股份有限公司 | 槽孔天线装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3736591A (en) * | 1970-10-30 | 1973-05-29 | Motorola Inc | Receiving antenna for miniature radio receiver |
US4070676A (en) * | 1975-10-06 | 1978-01-24 | Ball Corporation | Multiple resonance radio frequency microstrip antenna structure |
US4067016A (en) * | 1976-11-10 | 1978-01-03 | The United States Of America As Represented By The Secretary Of The Navy | Dual notched/diagonally fed electric microstrip dipole antennas |
US4191959A (en) * | 1978-07-17 | 1980-03-04 | The United States Of America As Represented By The Secretary Of The Army | Microstrip antenna with circular polarization |
JPS60244103A (ja) * | 1984-05-18 | 1985-12-04 | Nec Corp | アンテナ |
JPH061848B2 (ja) * | 1984-09-17 | 1994-01-05 | 松下電器産業株式会社 | アンテナ |
JPS6187434A (ja) * | 1984-10-04 | 1986-05-02 | Nec Corp | 携帯無線機 |
CA1263745A (en) * | 1985-12-03 | 1989-12-05 | Nippon Telegraph & Telephone Corporation | Shorted microstrip antenna |
US4692769A (en) * | 1986-04-14 | 1987-09-08 | The United States Of America As Represented By The Secretary Of The Navy | Dual band slotted microstrip antenna |
US4835541A (en) * | 1986-12-29 | 1989-05-30 | Ball Corporation | Near-isotropic low-profile microstrip radiator especially suited for use as a mobile vehicle antenna |
US5355142A (en) * | 1991-10-15 | 1994-10-11 | Ball Corporation | Microstrip antenna structure suitable for use in mobile radio communications and method for making same |
DE4302905C1 (de) * | 1993-02-02 | 1994-03-17 | Kathrein Werke Kg | Richtantenne, insbesondere Dipolantenne |
DE69409447T2 (de) * | 1993-07-30 | 1998-11-05 | Matsushita Electric Ind Co Ltd | Antenne für Mobilfunk |
US5627550A (en) * | 1995-06-15 | 1997-05-06 | Nokia Mobile Phones Ltd. | Wideband double C-patch antenna including gap-coupled parasitic elements |
-
1995
- 1995-03-21 DE DE19510236A patent/DE19510236A1/de not_active Withdrawn
-
1996
- 1996-03-19 ES ES96907252T patent/ES2120811T3/es not_active Expired - Lifetime
- 1996-03-19 DE DE59600359T patent/DE59600359D1/de not_active Expired - Lifetime
- 1996-03-19 US US08/718,536 patent/US5850198A/en not_active Expired - Lifetime
- 1996-03-19 EP EP96907252A patent/EP0761021B1/de not_active Expired - Lifetime
- 1996-03-19 WO PCT/DE1996/000472 patent/WO1996029757A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9629757A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1996029757A1 (de) | 1996-09-26 |
US5850198A (en) | 1998-12-15 |
DE19510236A1 (de) | 1996-09-26 |
DE59600359D1 (de) | 1998-08-27 |
EP0761021B1 (de) | 1998-07-22 |
ES2120811T3 (es) | 1998-11-01 |
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