EP0761021B1 - Antenne mit elektrisch niedriger bauhöhe - Google Patents
Antenne mit elektrisch niedriger bauhöhe Download PDFInfo
- Publication number
- EP0761021B1 EP0761021B1 EP96907252A EP96907252A EP0761021B1 EP 0761021 B1 EP0761021 B1 EP 0761021B1 EP 96907252 A EP96907252 A EP 96907252A EP 96907252 A EP96907252 A EP 96907252A EP 0761021 B1 EP0761021 B1 EP 0761021B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- antenna
- frequency range
- bridge
- conductive surface
- electrically
- 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.)
- Expired - Lifetime
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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 in the preamble of the claim 1 mentioned type.
- An antenna of this type can be very advantageous in radio mode on motor vehicles for mobile radio services be used. It has in particular in the GHz frequency range the advantage of a small height with the desired Directional diagram to connect.
- the invention is based on antennas of this type, as they are known from the DAS 2153 827 and DAS 2633 757 as well as European patent applications EP 0176311, EP 0177362 and EP 0163454 are known.
- the antennas described there essentially consist of one L-shaped flat part over a conductive base or are designed as U-shaped flat antennas.
- All antennas of this type are according to the current state of the art Technology monofrequency antennas i.e. they are at their basic resonance frequency operated what is physically a requirement for that is that the directional diagram when built over a conductive Surface essentially has a round characteristic.
- a mobile radio antenna on motor vehicles there is a desire for antennas that are in multiple frequency ranges can be used simultaneously.
- a cellular antenna both in the D mobile network at around 0.9 GHz and in the frequency range of the e-cellular network at approximately twice the frequency (1.8 GHz).
- the simultaneous use of one is often Antenna in the frequency-adjacent GPS navigation radio service desired.
- the object of the invention is therefore in an antenna according to the Preamble of claim 1, with the help of easy to carry out Measures to establish the function for several frequency ranges. These measures are designed to be as cost effective as possible Enable manufacturing.
- Fig. 1 L-shaped antenna with an almost rectangular first conductive Hatched area over conductive counterweight marked effect zones in another higher frequency
- Fig. 2 Antenna as Fig. 1, but with an almost circular first conductive surface and missing circle segment.
- Fig. 3 Antenna with a trapezoidal first conductive surface conductive counterweight and exemplary design of Slits 10, which have a high input impedance at their open End to suppress edge currents in another higher one Frequency range and with additional slots as capacitive Load at the open end, the slots being rectangular Cutouts are loaded inductively, so that the open Slot end at the surface edge, a high-impedance reactance in the sets another higher frequency range.
- Dashed minimal Size of the second conductive area.
- Fig. 3a Simplified equivalent circuit diagram of an inventive Antenna to explain the principle of action.
- Fig. 4 Antenna as Fig. 3 with slots 10 in the bridge 4 to Matching the self-inductance of the bridge in the different Frequency ranges.
- Fig. 5 L-shaped antenna over a conductive base with a circular sector as the first conductive surface 1 and almost quarter-wavelength slots in the wider frequency range for suppression of currents in the peripheral area of the first area.
- the different long slots cause resonances in two frequencies adjacent to each other higher frequency ranges.
- Fig. 6 circular sector antenna with the same shaped second conductive Surface and attachment of the antenna coaxial line parallel to this area.
- the basic principle of operation of the antenna according to the invention is based on it, with the help of the natural resonance of slots and recesses on the conductive surfaces of the antenna in different Frequency ranges to bring about an antenna resonance.
- this can be brought about by the fact that the Slots 10 in the first frequency range on the current distribution affect the antenna little and due to the natural resonance of the slot arrangements the current flow on the antenna is designed in this way is that also in this frequency range the antenna impedance resonance exists.
- the largest dimension of the first conductive area 1 is less than 3/8 lambda, so that is azimuthal Circular diagram e.g. even at double the frequency of the low Frequency range still largely exist.
- an inductance L 4.13 with a series radiation resistance R s increases and the capacity C 13 represents the capacitance of the inner zone 13 to the base plate and the capacitance C 12, the capacity of the current path 12 with the base plate and L 12 is the series inductance of this current path, the capacitance C 11 of the two edge zones 11 with the base plate is connected in parallel with the connection point 3 via the input impedance Z 10, which is high impedance at this frequency, at the open end of the slots 10.
- a slot forms an electrical line in a conductive surface, the wave resistance of which increases with the slot width 9.
- the resonance is mainly formed from the sum of the capacitances C 11 , C 12 , C 13 and the inductance L 12 , L 4 , 13 , the resonance of the slot line results in a complete shutdown of the relatively large ones Capacitance C 11 , whereby the antenna resonates even at the higher frequency. Accordingly, the frequency difference between the first and second resonance is greater, the larger the zone 11 in FIG. 1 is selected by the corresponding position of the slots 10, ie the closer the slots adjacent to the connection point 3 are.
- the shape of the antenna can affect the basic mode of operation can be freely chosen within wide limits.
- the one described Effect of the antenna of this kind can be brought about if the first conductive surface e.g. Rectangular shape, trapezoidal shape, Circle sector shape or circular shape with missing circle segment. Also a symmetry condition regarding the surface shape and the arrangement of the slots does not necessarily have to be observed will.
- the corresponding ones are shown in FIG. 2 for clarification Effective zones for an antenna with a circular shape and a missing one Circle segment entered.
- FIG. 3 shows an example of an advantageous embodiment of two Slots 10 for designing the current path 12 and the low-current Edge zones 11 and the inner one effective for resonance formation Zone 13 in Fig. 1.
- the slots 10 in their main direction as To design the boundary of the current path. Is the slot in the higher frequency lambda / 4 long, so it owns at its open End at the edge of the first surface a high input impedance, so that currents at this frequency from connection point 3 to the low-current Zones 11 are hindered in their flow. Noteworthy at the lower frequency, provided that e.g. only half the size the slots for the streams are not essential Obstacle.
- the first conductive surface 1 are included.
- you can such slots are introduced into the slots 10, which at their opposite the edge of the conductive surface 1 End with an inductive cutout from the conductive Area 1 is complete.
- the borders of these sections 14 acts inductively due to its longer length in contrast to Slot, which is a strong due to the small slot width has a capacitive effect.
- the Reactive resistance in the open end of the slot second frequency range can be designed with high resistance, so that Edge currents on the first conductive surface 1 are significantly suppressed will.
- the bridge 4 mainly acts inductively. 4 are Slits 10 are also made in the bridge 4 to be on this Way using the changed inductance in a second Frequency range in which the slots have 1/4 wavelength resonance at their open end possess the resonance frequency of the antenna also produce in this frequency range.
- the first senior Surface 1 of the antenna has the shape of a circular sector with no sector triangle at the top of the circle sector.
- the Slots 10 are largely straight in this example Sector rays, starting from the circular edge of the sector in Direction of the inner zone of the first conductive surface 1, arranged.
- Such an antenna can be very advantageous as Antenna for the D mobile network (approx. 900 MHz) and the E mobile network (approx. 1800 MHz). In this case it is Length of the slots about Lambda / 4 to choose for the frequency range of the E network; in the higher frequency range mainly the inner zone 13 of the first conductive Area 1 near the edge 5 and the bridge 4.
- a special one advantageous embodiment of this antenna covers equally the frequency of the global positioning system (GPS). This is easily achieved by using several slots with slightly unequal lengths for the Slits 10a and 10b in Fig. 5 resonate the antenna at the GPS frequency (1574 MHz) is also reached.
- GPS global positioning system
- the circle sector angle for example, 90 degrees.
- the slots are arranged symmetrically to the bisector. The shorter ones have 6 slits lying near the center line in this Example for the suppression of currents in the electric network frequency range a length of 0.25 lambda. For the longer slots in Fig. 5 was used to generate the resonance of the antenna on the GPS frequency a length of 0.23 lambda is selected.
- Such an antenna has the particular advantage of being simple Manufacturability. Will it over a conductive base plate or a mechanical support plate, so the first first conductive surface 1 and the bridge 4 from a sheet in one Operation together with the slots 10a and 10b with typical required slot widths of 0.5 ... 1.5 mm are punched out will. By bending the edge 5 at a right angle, the Antenna with the lower edge of the bridge 4 in a simple way mounted on the counterweight. After matching the Position of the slots and their dimensions such that Resonances of the antenna can arise at all three frequencies so with the help of a punch tool the antenna with large Precision and extremely inexpensive to manufacture. One is also in the choice of the sector angle with the invention Antenna relatively free.
- An antenna according to the invention can e.g. as in Fig. 6, also with mutually congruent conductive surfaces 1 and 2 can be designed.
- the outer jacket of the coaxial line runs 7 parallel to the surface 2, so that it is the electric field perpendicular to the areas 1, 2 does not bother.
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
Description
Claims (15)
- Antenne mit elektrisch niedriger Bauhöhe, vorzugsweise für Frequenzen im GHz-Bereich, bestehend aus einer ersten elektrisch leitenden Fläche (1), welche in einem ersten Frequenzbereich in keiner Abmessung größer ist als 3/8 Lambda und einer zweiten als elektrisches Gegengewicht wirkenden elektrisch leitenden Fläche (2) von mindestens gleicher Größe, die im wesentlichen parallel zu der ersten leitende Fläche (1), dieser gegenüber und in einem gewissen Abstand (A) davon angeordnet ist, und einer leitenden Brücke (4), welche eine Kante (5) der ersten leitenden Fläche (1) über eine Breite (B) hochfrequenzmäßig niederohmig mit der zweiten elektrisch leitenden Fläche (2) verbindet und die erste elektrisch leitende Fläche (1) in einem Ankopplungspunkt (3) hochfrequent leitend über einen Leiter (15) am Antennenanschlußpunkt mit dem Innenleiter einer Koaxialleitung (7) elektrisch leitend verbunden ist, deren Außenleiter (8) mit der zweiten elektrisch leitenden Fläche (2) verbunden ist und die Dimensionen der Antenne und der Ankopplungspunkt (3) so gewählt sind, daß die Antenne in dem ersten Frequenzbereich in Resonanz ist,
dadurch gekennzeichnet, daß
zur Resonanzbildung in mindestens einem weiteren Frequenzbereich, mindestens in einer der beiden leitenden Flächen oder/und in der leitenden Brücke (4) Schlitze (10) mit geeigneter Schlitzbreite (9) und Form gebildet sind und deren Berandung jeweils derart gewählt sind, daß sie den Verlauf der Ströme auf den elektrisch leitenden Flächen (1,2) und in der Brücke (4) im ersten und in jedem weiteren Frequenzbereich frequenzselektiv derart bestimmen, daß die Antenne sowohl im ersten wie auch jedem weiteren Frequenzbereich jeweils nahezu eine Resonanz aufweist. - Antenne nach Anspruch 1,
dadurch gekennzeichnet, daß
zur Resonanzbildung in mindestens einem weiteren, in der Frequenz höher liegenden Frequenzbereich, mindestens in einer der beiden elektrisch leitenden Flächen Schlitze (10) mit jeweils geeigneter Schlitzbreite (9) und einem jeweils zum Flächenrand weisenden offenen Ende gebildet sind und deren Verlauf in der Fläche und deren Längen bis zu ihrem geschlossenen Ende jeweils derart gewählt sind, daß sie den Verlauf der Ströme auf den Flächen im ersten Frequenzbereich nur wenig beeinträchtigen und dabei die für die Resonanzbildung wirksame Zone im wesentlichen durch die gesamte leitende Fläche gegeben ist, den Verlauf der Ströme auf diesen Flächen im jedem weiteren Frequenzbereich jedoch derart bestimmen, daß sich zwischen dem Ankopplungspunkt (3) und der leitenden Brücke (4) eine Strombahn (12) mit starken Strömen einstellt und entfernt von der leitenden Brücke (4) die Randzonen (11) der leitenden Fläche auf beiden Seiten dieser Strombahn nur kleine Ströme führen, sodaß sich die für die Resonanzbildung wirksame innere Zone (13) in der Nähe der leitenden Brücke (4) einstellt und diese Zone entsprechend der höheren Frequenz kleiner ist als die leitende Fläche, sodaß die Antenne auch in diesem Frequenzbereich eine Resonanz aufweist. - Antenne nach Anspruch 1 bis 2,
dadurch gekennzeichnet, daß
zur Resonanzbildung in mindestens einem weiteren Frequenzbereich in der leitenden Brücke (4) wenigstens ein Schlitz (10) mit geeigneter Schlitzbreite (9) mit einem zum Flächenrand weisenden offenen Ende gebildet ist und dessen Verlauf in der Fläche und dessen Länge bis zu ihrem geschlossenen Ende jeweils derart gewählt ist, daß er den Verlauf der Ströme auf den Flächen im ersten Frequenzbereich nur wenig beeinträchtigt und dabei die für die Resonanzbildung wirksame induktive Wirkung der Brücke im wesentlichen durch die gesamte Breite der Brücke gegeben ist, der Verlauf der Ströme auf dieser Brücke in jedem weiteren Frequenzbereich jedoch derart bestimmt ist, daß die wirksame Breite der Brücke entsprechend der weiteren Frequenz kleiner ist als die geometrische Breite B, sodaß die Antenne auch in diesem Frequenzbereich eine Resonanz aufweist. - Antenne nach Anspruch 1 bis 3,
dadurch gekennzeichnet, daß
bei großem Frequenzverhältnis zwischen einem zweiten und dem ersten Frequenzbereich die Schlitze (10) bei konstanter Schlitzbreite (9) so gestaltet sind, daß sie im zweiten Frequenzbereich eine elektrische Länge von nahezu 1/4 Lambda besitzen, sodaß sie an dem am Rand der leitenden Fläche befindlichen offenen Ende einen großen Blindwiderstand aufweisen. - Antenne nach Anspruch 1 bis 4,
dadurch gekennzeichnet, daß
zur geometrischen Verkürzung der notwendigen Schlitzlänge eine kleine Schlitzbreite (9) derart gewählt ist und das geschlossene Ende des Schlitzes durch die Berandung einer ausgesparten Fläche (14), welche groß ist im Vergleich zur Fläche des Schlitzes, gebildet ist, sodaß der Schlitz im zweiten Frequenzbereich an seinem offenen Ende einen großen Blindwiderstand aufweist und dieser Blindwiderstand im ersten Frequenzbereich möglichst klein ist. - Antenne nach Anspruch 1 bis 5,
dadurch gekennzeichnet, daß
die erste elektrisch leitende Fläche (1) die Form eines Rechtecks besitzt und der Ankopplungspunkt (3) im wesentlichen auf der mittelsenkrechten Linie (16) der Kante (5) angebracht ist, welche die erste leitende Fläche (1) mit der Brücke (4) bildet. - Antenne nach Anspruch 1 bis 5,
dadurch gekennzeichnet, daß
die erste elektrisch leitende Fläche (1) die Form eines Kreises mit fehlendem Kreissegment besitzt und der Ankopplungspunkt (3) im wesentlichen auf der mittelsenkrechten Linie (16) der im wesentlichen geradlinigen Kante (5), welche durch das fehlende Kreissegment gebildet ist und welche die erste leitende Fläche Fläche (1) mit der Brücke (4) bildet, angebracht ist. - Antenne nach Anspruch 1 bis 5,
dadurch gekennzeichnet, daß
die erste elektrisch leitende Fläche (1) die Form eines Kreissektors mit fehlendem Sektordreieck an der Spitze des Kreissektors besitzt und der Ankopplungspunkt (3) im wesentlichen auf der Winkelhalbierenden (6) des Kreissektors angebracht ist und der Öffnungswinkel des Kreissektors kleiner ist als 180 Grad. - Antenne nach Anspruch 1 bis 8,
dadurch gekennzeichnet, daß
mindestens zwei Schlitze (10) auf der ersten elektrisch leitenden Fläche (1) symmetrisch zur Symmetrielinie (6) ausgehend vom Rand im wesentlichen geradlinig in Richtung der leitenden Brücke (4) und in Richtung der wirksamen inneren Zone für den weiteren Frequenzbereich führen. - Antenne nach Anspruch 7 oder 8,
dadurch gekennzeichnet, daß
im wesentlichen geradlinige Schlitze in Form von Sektorstrahlen ausgehend vom Rand der ersten elektrisch leitenden Fläche (1) in Richtung der wirksamen inneren Zone (13) führen. - Antenne nach Anspruch 1 bis 10,
dadurch gekennzeichnet, daß
unterschiedlich lange Schlitze zur Ausbildung von weiteren Resonanzen für weitere Frequenzbereiche auf der ersten oder/und zweiten leitenden Fläche (1,2) angeordnet sind. - Antenne nach Anspruch 11,
dadurch gekennzeichnet, daß
mehrere symmetrisch zur Symmetrielinie angeordnete, im wesentlichen geradlinige Schlitze vorhanden sind, so daß sich wirksame innere Zonen zur Resonanzbildung im D-, E-Netz und für die satellitengestützte Navigation GPS einstellen. - Antenne nach Anspruch 1 bis 12,
dadurch gekennzeichnet, daß
die zweite leitende Fläche (2) eine im wesentlichen horizontale leitende Fläche einer Fahrzeugkarosserie ist. - Antenne nach Anspruch 1 und 2,
dadurch gekennzeichnet, daß
die erste und zweite leitende Fläche im wesentlichen zueinander kongruent sind und der Außenmantel der Koaxialleitung 7 parallel zur zweiten leitenden Fläche 2 geführt ist, so daß er das elektrische Feld senkrecht zu den Flächen 1, 2 nicht stört. - Antenne nach Anspruch 14,
dadurch gekennzeichnet, daß
sie auf einer nichtleitenden Fläche einer Fahrzeugkarosserie angebracht ist.
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 EP0761021A1 (de) | 1997-03-12 |
EP0761021B1 true 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) |
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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 |
GB2345194B (en) * | 1998-12-22 | 2003-08-06 | Nokia Mobile Phones Ltd | Dual band antenna for a handset |
DE29823087U1 (de) * | 1998-12-28 | 2000-05-04 | reel Reinheimer Elektronik GmbH, 35435 Wettenberg | 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 |
US6739028B2 (en) * | 2001-07-13 | 2004-05-25 | Hrl Laboratories, Llc | Molded high impedance surface and a method of making same |
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 |
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 |
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 |
DE102008031068A1 (de) * | 2007-07-10 | 2009-01-15 | Lindenmeier, Heinz, Prof. Dr. Ing. | 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 |
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-
1995
- 1995-03-21 DE DE19510236A patent/DE19510236A1/de not_active Withdrawn
-
1996
- 1996-03-19 WO PCT/DE1996/000472 patent/WO1996029757A1/de active IP Right Grant
- 1996-03-19 US US08/718,536 patent/US5850198A/en not_active Expired - Lifetime
- 1996-03-19 DE DE59600359T patent/DE59600359D1/de not_active Expired - Lifetime
- 1996-03-19 EP EP96907252A patent/EP0761021B1/de not_active Expired - Lifetime
- 1996-03-19 ES ES96907252T patent/ES2120811T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59600359D1 (de) | 1998-08-27 |
US5850198A (en) | 1998-12-15 |
DE19510236A1 (de) | 1996-09-26 |
WO1996029757A1 (de) | 1996-09-26 |
EP0761021A1 (de) | 1997-03-12 |
ES2120811T3 (es) | 1998-11-01 |
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