EP0957535A1 - Elektromagnetisch gekoppelte Mikrostreifenleiterantenne - Google Patents

Elektromagnetisch gekoppelte Mikrostreifenleiterantenne Download PDF

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Publication number
EP0957535A1
EP0957535A1 EP98108927A EP98108927A EP0957535A1 EP 0957535 A1 EP0957535 A1 EP 0957535A1 EP 98108927 A EP98108927 A EP 98108927A EP 98108927 A EP98108927 A EP 98108927A EP 0957535 A1 EP0957535 A1 EP 0957535A1
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EP
European Patent Office
Prior art keywords
substrate
antenna device
anyone
microstrip antenna
microstrip
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
EP98108927A
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English (en)
French (fr)
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EP0957535B1 (de
Inventor
Eva Schwenzfeier
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SES Astra SA
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Europeenne des Satellites SA
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 Europeenne des Satellites SA filed Critical Europeenne des Satellites SA
Priority to AT98108927T priority Critical patent/ATE314740T1/de
Priority to DE69832964T priority patent/DE69832964T2/de
Priority to ES98108927T priority patent/ES2257787T3/es
Priority to EP98108927A priority patent/EP0957535B1/de
Publication of EP0957535A1 publication Critical patent/EP0957535A1/de
Priority to HK00100444A priority patent/HK1021592A1/xx
Application granted granted Critical
Publication of EP0957535B1 publication Critical patent/EP0957535B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01Q1/247—Supports; Mounting means by structural association with other equipment or articles with receiving set with frequency mixer, e.g. for direct satellite reception or Doppler radar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/245—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation 
    • 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
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • 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
    • H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
    • H01Q9/0435—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave using two feed points
    • 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
    • H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line

Definitions

  • the present invention relates to an electromagnetically coupled microstrip antenna.
  • Electromagnetically coupled microstrip antennas (also referred to as 'proximity-coupled' antennas) like microstrip antennas in general exhibit only a small bandwidth. Different attempts have been made to increase the bandwidth of microstrip antennas, including the use of thicker substrates, of parasitic elements and of impedance-matching networks.
  • an electromagnetically coupled microstrip patch antenna consisting of a rectangular microstrip patch on a first substrate and a microstrip feeding line on a second substrate beneath the first substrate.
  • a ground plane is provided beneath the second substrate.
  • the feeding line is centered with respect to the patch width and is inset half the patch length.
  • a feeding line inset smaller and greater than half the patch length is mentioned but an inset equal to half the patch length is described to be advantageous for maximum coupling between the microstrip feeding line and the microstrip patch.
  • a small tuning stub is provided which is connected in shunt with the microstrip feeding line and is located either near the edge of the microstrip patch or about lambda/2 away.
  • a microstrip antenna consisting of a first substrate on which the square radiator is printed and a second substrate on which the feeding line is printed below the first substrate.
  • the first substrate is relatively thick and consists of a material having a low relative permittivity.
  • the second substrate is relatively thin and consists of a material having a high relative permittivity. The feeding line is centered with respect to the patch width.
  • the patch overlap may be adjusted for best match and optimum impedance bandwidth.
  • the open end of the feeding line of the microstrip antenna overlaps the patch by slightly more than half the patch length.
  • the bandwidth is increased by providing a small matching stub positioned on the feeding line.
  • DTH Direct-To-Home
  • These antennas are designed for the reception of direct broadcast signals and conventionally comprise a feedhorn and a LNB (Low Noise Block Converter) as, for example, disclosed in EP-A-0735 610.
  • LNB Low Noise Block Converter
  • a microstrip antenna should be available which can be connected as a feed to the LNB of a reception apparatus capable of receiving directly broadcast signals.
  • a first problem of the present invention is to provide an electromagnetically coupled microstrip antenna exhibiting an increased bandwidth.
  • a second problem of the present invention is to provide an electromagnetically coupled microstrip antenna being capable of simultaneously receiving horizontally and vertically polarized waves.
  • a third problem of the present invention is to provide a reception apparatus capable of receiving directly broadcast signals and exhibiting reduced losses.
  • an electromagnetically coupled microstrip antenna device comprising a first substrate; an antenna element provided on a first surface of the first substrate; a second substrate; and a first feeding element provided between a second surface of the first substrate and a first surface of the second substrate; wherein an end portion of the first feeding element is positioned within a range of -0,3L and +0,3L from an edge portion of the antenna element, wherein L is the extension of the antenna element in the direction of overlap between the antenna element and the feeding element.
  • a second feeding element is provided between the second surface of the first substrate and the first surface of the second substrate, an end portion of the second feeding element is positioned within a range of -0,3L and +0,3L from an edge portion of the antenna element, wherein L is the extension of said antenna element in a direction of overlap between the antenna element and the feeding element.
  • said first and/or second feeding elements are elongated feeding lines. Further, said first and second feeding elements are usually arranged substantially perpendicularly to each other.
  • an impedance-matching means can be provided in an microstrip antenna according to the invention.
  • impedance-matching means is an impedance-matching network connected to the first and/or second feeding element.
  • the first and/or second feeding element centered with respect to the respective edge portion of the antenna element.
  • the antenna element can be square-shaped, rectangular-shaped, circular-shaped or elliptical-shaped.
  • a ground element can be provided on a second surface of said second substrate.
  • a third substrate can be provided. On a first surface of the third substrate additional antenna elements are arranged.
  • the third substrate is arranged on the first substrate, in other words such that the main antenna element is interposed between the first surface of the first substrate and a second surface of the third substrate.
  • the additional antenna elements are arranged symmetrically with respect to the center of the main antenna element.
  • the additional antenna elements are arranged to overlap with the main antenna element.
  • the additional antenna elements may be square-shaped, rectangular-shaped, circular-shaped or elliptical-shaped.
  • a microstrip antenna device comprising a first substrate; a square-shaped antenna element provided on a first surface of the first substrate; a second substrate; a first elongated feeding element provided between a second surface of the first substrate and a first surface of the second substrate; and a second elongated feeding element provided between the second surface of said first substrate and the first surface of the second substrate; wherein the first feeding element and the second feeding element are arranged to overlap with the antenna element such that an end portion of the first feeding element beneath said square-shaped antenna element and an end portion of the second feeding element beneath the square-shaped antenna element are not in contact with each other.
  • an end portions of the first and of the second elongated feeding element are positioned within a range of -0,5(L-W) and +0,5(L-W) from an respective edge portion of the square-shaped antenna element.
  • L is the extension of said square-shaped antenna element in a direction parallel to the direction of overlap and W is the width of the respective elongated feeding element.
  • microstrip antenna device for receiving horizontally and vertically polarized waves with the same antenna device.
  • the first and second feeding elements are arranged substantially perpendicularly to each other.
  • an impedance-matching means for matching impedances, an impedance-matching means can be provided which usually takes the form of an impedance-matching network connected to the first and second elongated feeding element, respectively.
  • the first and/or second elongated feeding element is arranged at the center of the respective edge portion of the square-shaped antenna element.
  • a ground element can be provided on a second surface of the second substrate.
  • a third substrate can be provided. On a first surface of the third substrate additional antenna elements are provided.
  • the third substrate is arranged on the first substrate, in other words such that the square-shaped antenna element is interposed between said first surface of the first substrate and a second surface of the third substrate.
  • the additional antenna elements are arranged symmetrically with respect to the center of the square-shaped antenna element.
  • the additional antenna elements are arranged to overlap with said main antenna element to achieve an electromagnetical coupling.
  • the additional antenna elements may be square-shaped, rectangular-shaped, circular-shaped or elliptical-shaped.
  • the present invention provides a reception apparatus for receiving broadcast signals comprising a microstrip antenna device as described above for receiving a broadcast signal and a converter means for converting the frequency of the received first broadcast signal.
  • said converter means is provided in planar waveguide technology to avoid transition losses.
  • the present invention further provides a reception apparatus for receiving broadcast signals comprising a first microstrip antenna device as described above for receiving a first broadcast signal, converter means for converting the frequency of the received first broadcast signal, a second microstrip antenna device as described above for receiving a second broadcast signal simultaneously to receiving the first broadcast signal and a second converter means for converting the frequency of the received second signal.
  • the first and second converter means are provided in planar waveguide technology to avoid transition losses.
  • a switching matrix can be provided for distributing on demand signals received from said converter means.
  • the present invention further provides a reception apparatus for receiving broadcast signals comprising a first microstrip antenna device as described above for receiving a first broadcast signal, a second microstrip antenna device as described above for receiving a second broadcast signal simultaneously to receiving the first broadcast signal, converter means for converting the frequency of the received broadcast signal, and a connecting means being adapted to selectively supply the output signal of one of the first antenna device or the second antenna device to converter means.
  • This embodiment is advantageous as the number of converters is smaller than the number of microstrip antenna devices whereby the reception apparatus of this embodiment is more economical compared to a reception apparatus according to the invention in which the number of converters is equal to the number of microstrip antenna devices.
  • the converter means comprises at least one low-noise amplifier , at least one frequency mixer and at least one local oscillator.
  • the converter means and/or the connecting means are provided in planar waveguide technology.
  • the present invention further provides a reception apparatus for receiving broadcast signals comprising a first microstrip antenna device as described above for receiving a first broadcast signal and supplying at least one output signal to a first low-noise amplifying means, a second microstrip antenna device as described above for receiving a second broadcast signal simultaneously to receiving the first broadcast signal and supplying at least one output signal to a second low-noise amplifying means, a connecting means being supplied with an output signal from each of said first and second low-noise amplifying means and at least one frequency mixing means being supplied with an output signal from said connecting means.
  • At least said first and second amplifying means are provided in planar waveguide technology.
  • the connecting means and/or the frequency mixing means can be provided in planar waveguide technology.
  • Any reception apparatus described above is suitable for receiving broadcast signals from satellites at two orbital positions. If broadcast signals from more than two orbital positions shall be received additional microstrip antenna device according to the invention can be added to a reception apparatus according to the invention.
  • a first substrate 1 has a height h1 and consists of a dielectric material having a relative permittivity E1.
  • An antenna element 2 is provided on a first surface 1a of the first substrate 1.
  • the antenna element 2 takes the form of a rectangular microstrip patch element having an length of L.
  • a second substrate 3 is provided below the first substrate 1.
  • the second substrate 3 has a height h2 and consists of a dielectric material having a relative permittivity E2.
  • a feeding element 4 is interposed between the first and second substrate.
  • the feeding element 4 may be provided on the second surface 1b of the first substrate 1 or a first surface 3a of the second substrate 3.
  • the feeding element 4 takes the form of an elongated feeding line.
  • the feeding line 4 is centered with respect to the edge portion 2a.
  • an end portion of the feeding element is positioned within an area symmetrically arranged with respect to an respective edge portion of the antenna element.
  • the antenna element and the feeding element do not overlap.
  • a ground element 5 is provided on a second surface 3b of the second substrate 3, the ground element 5 taking the form of a ground plane substantially covering the entirety of the second surface 3b of the second substrate 3.
  • the two examples were designed by means of a simulation tool based on the method of moments.
  • the design of the microstrip antenna included on the one hand the optimization of the patch length L, the feeding line width W and the overlap O, and on the other hand the impedance-matching network.
  • the patch length L corresponds to the specified resonant frequency (center frequency of the considered frequency range).
  • the feeding line width W was optimized and the best bandwidth was achieved using a 50 Ohm feeding line.
  • a first substrate 11 has a height h11 and consists of a dielectric material having a relative permittivity E11.
  • An antenna element 12 is provided on a first surface 11a of the first substrate 11.
  • the antenna element 12 takes the form of a square microstrip patch element having an edge length L.
  • a second substrate 13 is provided below the first substrate 11.
  • the second substrate 13 has a height h12 and consists of a dielectric material having a relative permittivity E12.
  • a first feeding element 14 is interposed between the first and second substrate.
  • the first feeding element 14 may be provided on the second surface 11b of the first substrate 11 or a first surface 13a of the second substrate 13. In this embodiment, the first feeding element 14 takes the form of an elongated feeding line.
  • a second feeding element 15 is interposed between the first and second substrate.
  • the second feeding element 15 may be provided on the second surface 11b of the first substrate 11 or a first surface 13a of the second substrate 13. In this embodiment, the second feeding element 15 takes the form of an elongated feeding line.
  • the second feeding element 15 extends in a direction substantially perpendicular to said first feeding element 14.
  • the feeding lines 14 and 15 are centered with respect to the respective edge portion 12a and 12b.
  • the end portion 14a of the first elongated feeding line 14 and the end portion 15a of the second elongated feeding line 15 may be located such that the first and second elongated feeding line are separated from each other within a range of -1/2 ⁇ (L-W) and +1/2 ⁇ (L-W) from the respective edge portion of the microstrip patch element 12, wherein L is generally the extension of the antenna element 12 in the direction of overlap with the respective feeding element 14, 15 and W is the width of the feeding element 14, 15.
  • L is generally the extension of the antenna element 12 in the direction of overlap with the respective feeding element 14, 15 and W is the width of the feeding element 14, 15.
  • an end portion of the feeding element is positioned within an area symmetrically arranged with respect to an respective edge portion of the antenna element.
  • a ground element 16 is provided on a second surface 13b of the second substrate 13, the ground element 16 taking the form of ground plane substantially covering the entirety of the second surface 13b of the second substrate 13.
  • impedance-matching networks 20 are shown which are provided to match the impedance of the microstrip antenna to, for example, a 50 Ohm system which is usually used in DTH satellite antennas.
  • Each impedance-matching network 20 comprises a first section 21 having a length L1 and a width W1 and a second section 22 having a length L2 and a width W2.
  • the appropriate variation of these values makes it possible to realize impedance matching.
  • the impedance networks 20 are not necessarily identical but may be adapted to the conditions given by the design of the individual feeding element. However, it is advantageous to realize the impedance networks in planar waveguide technology to avoid transition losses.
  • the main antenna element 2 is interposed between the first and third substrates.
  • the third substrate 31 has a height h31 and consists of a dielectric material having a relative permittivity E31.
  • FIG. 5 and 6 an electromagnetically coupled microstrip antenna having such a third substrate 31 and additional antenna elements 32 is shown which is based on the embodiment of Fig. 1 and 2, however, comprising a square microstrip antenna element 2 provided on the first surface 1a of the first substrate 1.
  • the remaining elements of the embodiment of Fig. 1 and 2 are unchanged and therefore not discussed in further detail. Instead, reference is made to the above description of Fig. 1 and 2.
  • four additional antenna elements 32a to 32d are provided on the first surface 31a of the third substrate 31.
  • the four additional square antenna elements 32a to 32d are positioned symmetrically with respect to the center of the antenna element 2 on the first surface 1a of the first substrate 1 with a distance d between adjacent edges.
  • the additional square antenna elements 32a to 32d have an edge length of L'.
  • the symmetrical arrangement in both directions secures the same reception conditions for both polarizations. Therefore, the four additional square antenna elements 32a to 32d can be provided advantageously also in the embodiment of Fig. 3 and 4.
  • the additional antenna elements 32 are fed through the overlapping between these elements and the antenna element 2 provided on the first substrate 1. A constructive superposition of the waves and therefore beam forming is possible with this embodiment of the invention.
  • an electromagnetically coupled microstrip antenna With an electromagnetically coupled microstrip antenna according to the invention it is nor required to use an adhesive film for attaching the substrates to each other.
  • This kind of attachment achieved by adhesive films is known in the prior art and usually addressed as a multilayer structure.
  • the substrates are attached to each other by mechanical attaching means like screws, bolts etc.
  • the resulting structure is called stacked structure. The advantage achieved thereby is that losses which are caused by the presently available adhesive films can be avoided.
  • a reception apparatus which is capable of receiving directly broadcast signals.
  • a reflector 40 is combined with a reception apparatus 41.
  • a first embodiment of the reception apparatus 41 comprises an electromagnetically coupled microstrip antenna 42 as described and an LNB 43.
  • the embodiment of Fig. 3 and 4 is employed to supply a signal H for horizontally polarized waves and a signal V for vertically polarized waves to the LNB 43. Since the antenna 42 and the LNB 43 are realized in planar waveguide technology transition losses are avoided.
  • a first and a second antenna 42a and 42b can be provided in a reception apparatus 41 as shown in Fig. 9 showing only a top-view of the microstrip antenna device.
  • the first and the second antenna 42a and 42b are spaced from each other such that broadcast signals from a satellite at a first orbital position can be received simultaneously with broadcast signals from a satellite at a second orbital position.
  • Either the first or the second antenna 42a or 42b is positioned in the focus of the reflector 40 (see Fig. 7) or both antennas 42a and 42b are positioned out of but close to the focus of the reflector 40 (see Fig. 7).
  • FIG. 10 A second embodiment of the reception apparatus according to the invention is shown in Fig. 10.
  • this reception apparatus 61 the output signals of the electromagnetically coupled microstrip antennas 62a and 62b, which correspond to the antennas 42a and 42b in Fig. 9 and which are shown in Fig.
  • a single LNB 63 comprising low-noise amplifiers 64a and 64b, frequency mixers 65a and 65b and a local oscillator 66 via a connecting means 67 being adapted for supplying selectively the output signals H, V of one of the microstrip antennas 62a, 62b to the low-noise amplifiers 64a, 64b.
  • the connecting means 67 can be realized by means of a switch for connecting the inputs of the low-noise amplifiers 64a, 64b with either the outputs H, V of the first microstrip antenna 62a or of the second microstrip antenna 62b.
  • a control signal C is supplied to the connecting means 67 accordingly.
  • the output signals RF of the low-noise amplifiers 64a, 64b are supplied to the frequency mixers 65a, 65b which are also supplied with an output signal from the local oscillator 66.
  • the frequency mixers 65a, 65b comprise outputs 68a, 68b each of which supplying an output signal from the reception apparatus to individual user devices.
  • FIG. 11 A third embodiment of the reception apparatus according to the invention is shown in Fig. 11.
  • the output signals of the electromagnetically coupled microstrip antennas 72a and 72b which also correspond to the antennas 42a and 42b in Fig. 9 and which are shown in Fig. 11 to output a signal H corresponding to a received horizontally polarized broadcast wave and a signal V corresponding to a received vertically polarized broadcast wave, may be supplied to an individual one of low-noise amplifiers 73a, 73b, 73c, 73d.
  • the output signals of the low-noise amplifiers 73a, 73b, 73c, 73d are supplied to a connecting means 74 being adapted for supplying selectively the output signals RF of the low-noise amplifiers 73a, 73b, 73c, 73d to individual frequency mixers 75a, 75b which are also supplied with an output signal of a local oscillator 76.
  • the connecting means 74 can be realized by means of a switch for connecting the inputs of the frequency mixers 75a, 75b with either the outputs of the low-noise amplifiers 73a, 73b connected to the first antenna 72a or the outputs of the low-noise amplifiers 73c, 73d connected to the second antenna 72b.
  • a control signal C is supplied to the connecting means 74 accordingly.
  • the frequency mixers 75a, 75b comprise outputs 77a, 77b each of which supplying an output signal from the reception apparatus to individual user devices.
  • a switching matrix is provided in the reception apparatus 51 according to the invention.
  • the switching matrix distributes the signals from one or more microstrip antennas, LNBs or frequency mixers to outputs supplying an output signal from the reception apparatus to individual user devices.
  • a reception apparatus 51 is shown comprising two electromagnetically coupled microstrip antennas 52a and 52b each of which supplying a signal H corresponding to a received horizontally polarized broadcast wave and a signal V corresponding to a received vertically polarized broadcast wave to low-noise amplifiers 53a to 53d.
  • RF signals from the low-noise amplifiers 53a to 53d are supplied to frequency mixers 54a to 54d each of which receiving a reference frequency from a local oscillator 55.
  • IF signals from the individual frequency mixers 54a to 54d are fed to a switching matrix 56 distributing on demand the received IF signals to anyone of the four outputs 57a to 57d.
  • the switching matrix 56 may be realized in planar waveguide technology, like the microstrip antennas and the LNB, to reduce the complexity of the overall system and to further avoid transition losses.
  • the switching matrix may be combined with any one of the first to third embodiment of the reception apparatus according to the invention as described above with reference to Fig. 8 to 11.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
EP98108927A 1998-05-15 1998-05-15 Elektromagnetisch gekoppelte Mikrostreifenleiterantenne Expired - Lifetime EP0957535B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT98108927T ATE314740T1 (de) 1998-05-15 1998-05-15 Elektromagnetisch gekoppelte mikrostreifenleiterantenne
DE69832964T DE69832964T2 (de) 1998-05-15 1998-05-15 Elektromagnetisch gekoppelte Mikrostreifenleiterantenne
ES98108927T ES2257787T3 (es) 1998-05-15 1998-05-15 Antena de microtira de acoplamiento electromagnetico.
EP98108927A EP0957535B1 (de) 1998-05-15 1998-05-15 Elektromagnetisch gekoppelte Mikrostreifenleiterantenne
HK00100444A HK1021592A1 (en) 1998-05-15 2000-01-24 Electromagnetically coupled microstrip antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98108927A EP0957535B1 (de) 1998-05-15 1998-05-15 Elektromagnetisch gekoppelte Mikrostreifenleiterantenne

Publications (2)

Publication Number Publication Date
EP0957535A1 true EP0957535A1 (de) 1999-11-17
EP0957535B1 EP0957535B1 (de) 2005-12-28

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EP98108927A Expired - Lifetime EP0957535B1 (de) 1998-05-15 1998-05-15 Elektromagnetisch gekoppelte Mikrostreifenleiterantenne

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EP (1) EP0957535B1 (de)
AT (1) ATE314740T1 (de)
DE (1) DE69832964T2 (de)
ES (1) ES2257787T3 (de)
HK (1) HK1021592A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828015A1 (fr) * 2001-07-27 2003-01-31 D Phy Espace Dev De Produits H Circuit d'alimentation et antenne le comportant
ITRM20100511A1 (it) * 2010-10-01 2012-04-02 Clu Tech Srl Antenna stampata ibrida ad elementi radianti multipli
WO2016029631A1 (zh) * 2014-08-29 2016-03-03 华为技术有限公司 一种天线和通信设备
NO20170411A1 (en) * 2017-03-15 2018-09-17 Norbit Its Patch antenna feed
JPWO2018198349A1 (ja) * 2017-04-28 2019-11-07 優 小島 アンテナ装置および携帯端末

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Publication number Priority date Publication date Assignee Title
EP0271458A2 (de) * 1986-11-13 1988-06-15 Communications Satellite Corporation Elektromagnetisch gekoppelte Antennenelemente in gedruckter Schaltungstechnik bestehend aus kapazitiv an die Zuführungsleitungen gekoppelten Streifenleitern oder Schlitzen
US5165109A (en) * 1989-01-19 1992-11-17 Trimble Navigation Microwave communication antenna
EP0627783A1 (de) * 1993-06-03 1994-12-07 Alcatel N.V. Strahlende Mehrschichtenstruktur mit variabelem Strahlungsdiagramm
US5471664A (en) * 1993-12-30 1995-11-28 Samsung Electro-Mechanics Co., Ltd. Clockwise and counterclockwise circularly polarized wave common receiving apparatus for low noise converter
EP0707357A1 (de) * 1994-10-10 1996-04-17 Wang, Pierre Antennensystem mit mehreren Speisesystemen, integriert in einem rauscharmen Umsetzer (LNC)

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
EP0271458A2 (de) * 1986-11-13 1988-06-15 Communications Satellite Corporation Elektromagnetisch gekoppelte Antennenelemente in gedruckter Schaltungstechnik bestehend aus kapazitiv an die Zuführungsleitungen gekoppelten Streifenleitern oder Schlitzen
US5165109A (en) * 1989-01-19 1992-11-17 Trimble Navigation Microwave communication antenna
EP0627783A1 (de) * 1993-06-03 1994-12-07 Alcatel N.V. Strahlende Mehrschichtenstruktur mit variabelem Strahlungsdiagramm
US5471664A (en) * 1993-12-30 1995-11-28 Samsung Electro-Mechanics Co., Ltd. Clockwise and counterclockwise circularly polarized wave common receiving apparatus for low noise converter
EP0707357A1 (de) * 1994-10-10 1996-04-17 Wang, Pierre Antennensystem mit mehreren Speisesystemen, integriert in einem rauscharmen Umsetzer (LNC)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828015A1 (fr) * 2001-07-27 2003-01-31 D Phy Espace Dev De Produits H Circuit d'alimentation et antenne le comportant
ITRM20100511A1 (it) * 2010-10-01 2012-04-02 Clu Tech Srl Antenna stampata ibrida ad elementi radianti multipli
WO2016029631A1 (zh) * 2014-08-29 2016-03-03 华为技术有限公司 一种天线和通信设备
US10283866B2 (en) 2014-08-29 2019-05-07 Huawei Technologies Co., Ltd. Antenna and communications device
NO20170411A1 (en) * 2017-03-15 2018-09-17 Norbit Its Patch antenna feed
NO345389B1 (en) * 2017-03-15 2021-01-11 Norbit Its Patch antenna feed
US11018428B2 (en) 2017-03-15 2021-05-25 Norbit Its Patch antenna feed
JPWO2018198349A1 (ja) * 2017-04-28 2019-11-07 優 小島 アンテナ装置および携帯端末

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ATE314740T1 (de) 2006-01-15
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DE69832964T2 (de) 2006-08-24
DE69832964D1 (de) 2006-02-02
HK1021592A1 (en) 2000-06-16

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