EP1223638A2 - Gruppenantennensystem - Google Patents
Gruppenantennensystem Download PDFInfo
- Publication number
- EP1223638A2 EP1223638A2 EP01129695A EP01129695A EP1223638A2 EP 1223638 A2 EP1223638 A2 EP 1223638A2 EP 01129695 A EP01129695 A EP 01129695A EP 01129695 A EP01129695 A EP 01129695A EP 1223638 A2 EP1223638 A2 EP 1223638A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- antenna
- group
- sub
- antenna system
- subgroups
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/267—Phased-array testing or checking devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
Definitions
- the invention relates to a group antenna system according to the preamble of Claim 1.
- They are group antenna systems with an electrically large group antenna known, the first antenna sub-group and a first Antenna sub-group and a second antenna sub-group, wherein a combination line network is provided which has an entrance to Recording an antenna power signal and one with the first Antenna sub-group connected first output to deliver a first Output signal to the first antenna sub-group and one with the second Antenna sub-group connected second output to deliver the second Output signal to the second antenna sub-group.
- Such group antenna systems typically antenna subsets, in the form of antenna halves in are arranged next to each other on one level.
- the two antenna halves are from the outputs of a combination line network that through a power divider is formed, in-phase output signals supplied, to generate a summation diagram of the antennas (or antiphase Output signals to generate a difference diagram).
- Group antenna systems which have a number of spatial contain separate radiation elements, those for generation a spatial deflection of the antenna beam against each other by one given phase shifted signals are supplied.
- the object of the invention is to provide a group antenna system presupposed type to create which a broadband low Input reflection factor and thus a wider range of adjustment having.
- the invention provides a group antenna system with an electrical large group antenna created, the first antenna subgroup and comprises a second antenna sub-group, and with a Combination line network that has an input for receiving a Antenna power signal and one with the first antenna sub-group connected first output for delivering a first output signal to the first antenna sub-group and one with the second antenna sub-group connected second output for emitting a second output signal has the second antenna subgroup.
- the combination line network a Phase shifter for generating a phase shift between the output signals of the first output and the second output contains their feed to the antenna subgroups, and that means are provided to the phase shift in the beam path of the To compensate antenna sub-groups emitted antenna radiation.
- the group antenna system according to the invention has one versus one corresponding conventional array antenna system essential increased range of adjustment.
- the group antenna preferably comprises two of the same size Antenna subsets or it consists of several such pairs of equally large antenna subgroups.
- the first antenna subgroup is a first Half antenna of the group antenna forms, and that the second Antenna sub-group forms a second half-antenna of the group antenna.
- phase shifter produces a phase shift of 90 °.
- the means for compensating the Phase shift a shift between that of the first Antenna sub-group emitted radiation and that from the second Antenna subgroup emits radiation in the main beam direction a quarter wavelength in the sense of a compensation of the of the Phase shifter produce 90 ° phase shift.
- the Antenna subgroups with respect to the main beam direction of the antenna are shifted against each other.
- a preferred embodiment of this provides that the Antenna subgroups perpendicular to the main beam direction of the antenna arranged and shifted against each other by a quarter wavelength.
- the Antenna subgroups at an angle to the main beam direction of the antenna are arranged, and that the centers of the antenna subgroups with respect to the Main beam direction shifted against each other by a quarter wavelength are.
- the antenna subgroups in a common Level are arranged.
- the Antenna subgroups with different dielectric layers Dielectric values are covered, which is the phase shift of compensate for radiation emitted by the antenna subgroups.
- the dielectric layers have a thickness such that they have a Shift between those given by the antenna sub-groups Radiations around a quarter of a wavelength in the sense of a compensation of the 90 ° phase shift generated by the phase shifter cause.
- the Antenna sub-groups are arranged in a common plane.
- a first dielectric layer is air
- a second dielectric layer is a layered medium with a dielectric constant greater than that Is the dielectric constant of air.
- the Antenna sub-groups of waveguide paths with different Cross-sectional dimensions are arranged which are the phase shift compensate for the radiation emitted by the antenna subgroups.
- the waveguide paths preferably have one around a certain one Difference different length, so that a shift of the Antenna sub-groups emitted radiation by a quarter wavelength in the sense of a compensation of the phase shifting device generated 90 ° phase shift is effected.
- the Antenna sub-groups arranged in a common plane.
- the antenna subgroups are advantageously in the direction of the division electrically large.
- the Antenna subgroups in the direction perpendicular to the division are small.
- the reflection factors of the antenna subgroups are preferably the same.
- the combination line network contains a 4-port power divider.
- the 4-port power divider is preferably a Wilkinson divider, one 3 dB directional coupler or an E-H waveguide double-T branch educated.
- Electrically large group antenna comprises a first antenna sub-group 11 and a second antenna sub-group 12, which in the illustrated Embodiment each have a first and a second half antenna Form group antenna 10 and are the same size.
- On Combination line network 13 includes an input for receiving a Antenna power signal and a first output that is connected to the first Antenna sub-group 11 is connected and a first output signal this delivers, as well as a second output, which with the second Antenna sub-group 12 is connected and a second output signal delivers this.
- the combination line network 13 can be, for example, a 4-port power divider included by a Wilkinson divider, a 3 dB directional coupler or an E-H waveguide double-T branch can be formed can, as shown by way of example in FIGS. 2a) to c).
- the input reflection factor ru of the antenna sub-groups 11, 12, FIG. 1, assumes a minimum around the nominal frequency f0, with a useful bandwidth ⁇ f, as shown in Figure 3.
- the useful bandwidth ⁇ f is a measure of that Adaptation bandwidth with which the group antenna can be operated.
- FIG. 4 shows, which schematically shows a first embodiment of the represents group antenna system according to the invention, includes Combination line network 13 a phase shifter 14, which between an output of the combination line network 13 and one of the antenna sub-groups 11, 12 forming group antenna 10 are connected (In the exemplary embodiment shown in FIG. 4, the Phase shifter 14 between the second output of the Combination line network 13 and the second antenna subgroup 12 switched), and a phase shift, of the amount 90 °, between the Output signals of the first output and the second output of the Combination line network 13 before the supply of the output signals the antenna sub-groups 11, 12 of the group antenna 10 are generated.
- Phase shifting device 14 generates a phase shift in the beam path the antenna radiation emitted by the antenna sub-groups 11, 12 to compensate again so that the antenna radiation is uniform again Has phase position of the originally intended signal.
- FIG. 5 which in Figure 5a) in the side view and in Figure 5b) is shown in plan view Antenna sub-groups 21, 22 of the group antenna 20 perpendicular to Main beam direction of the antenna and arranged by a quarter wavelength shifted against each other.
- the first antenna subgroup 21 is directly with connected to the first output of the combination line network 23, while the second antenna subgroup 22 has a Phase shifter 24 with the second output of the Combination line network 23 is connected, so that the displacement of the two antenna sub-groups 21, 22 by a quarter wavelength ⁇ / 4 against each other exactly that caused by the phase shifter 24 Phase shift compensated by -90 °.
- FIG. 6 in which FIG. 6a) again shows a side view and 6b) shows a plan view Antenna subgroups 31, 32 of the group antenna 30 obliquely to Main beam direction of the antenna arranged.
- the middle of the Antenna subgroups 31, 32, which in Figure 6a) by P1 or by P2 are identified with regard to the main beam direction of the Group antenna shifted against each other by a quarter wavelength ⁇ / 4, so that in turn compensation for a 90 ° phase shift between the input signals of the two antenna subsets 31 and 32 becomes.
- antenna sub-groups 41, 42 of a group antenna 40 each with dielectric layers 45, 46 of different dielectric numbers ⁇ r1 or ⁇ r2 covered.
- dielectric layers 45, 46 have a thickness d.
- the thickness is d of the two dielectric layers 45, 46 are the same, but this need not be the case necessarily be the case.
- the thickness d of the dielectric layers 45, 46 is chosen so that there is a shift of the Antenna subgroups 41, 42 emitted radiation by a quarter Wavelength ⁇ / 4 results relative to each other, in the sense of a compensation of from the phase shifter (not shown in the figure), compare the phase shifter 14 in FIG. 4.
- the two are Antenna sub-groups 41, 42 arranged in a common plane, this however, this need not necessarily be the case. If the two antenna sub-groups 41, 42 of the group antenna 40 with respect to the The main beam direction of the antenna would of course be this Dimensioning the thickness d of the dielectric layers 45, 46 to consider.
- FIG. 8 there is a group antenna 50 by a first antenna sub-group 51 and a second Antenna sub-group 52 formed.
- the antenna subgroups 51, 52 are Waveguide paths 55, 56 with different cross-sectional dimensions arranged, which is a phase shift of the Antenna subgroups 51, 52 emit radiation relative to one another cause.
- the waveguide paths 55, 56 a by a difference d different length, so that a Shift of those emitted by the antenna subgroups 51, 52 Radiations by a quarter wavelength ⁇ / 4 relative to each other in the sense compensation for the 90 ° phase shift.
- the Antenna sub-groups 51, 52 in turn in a common plane arranged. Again, this does not necessarily have to be the case, however would be a shift of the two antenna subgroups 51, 52 relative to each other with respect to the main beam direction of the array antenna 50 when dimensioning the difference d between the two waveguide paths 55, 56 to consider.
- each Transition sections 57, 58 with a transition from a narrow one Cross section can be provided on a wide cross section, which in the Figure 8 embodiment shown with a transition Adjustment levels is realized.
- Group antenna system is that the reflection factors of the Antenna subgroups are the same. That means that Antenna subgroups should be largely decoupled from one another have to. This is guaranteed if the antenna subgroups are at least in Direction of the division are electrically large. In the other direction no restriction, i.e. also antennas, which are in the direction perpendicular to Division are small, e.g. Antennas with only one line can be considered.
- a Group antenna 60 is formed by antenna subgroups 61, 62, which in Direction perpendicular to the division are small, namely only through two rows are formed by slot radiators.
- the structure of the group antenna system according to the invention achieved effect with respect to that reflected on the antenna subgroups Waves is that the reflected waves on the combination line network in Incoming phase and arrive at the fourth gate of the 4-gate power divider used here can emerge or be absorbed. So that at ideal components the resulting reflection factor at Antenna input practically disappear completely, regardless of the height and the frequency dependence of the reflection factor Antenna subgroups. The function is restricted by non-ideal ones Properties of the combination line network and Phase shifter. However, the resultant Adjustment bandwidth is nevertheless essential in many practical cases become larger than that of the antenna subgroups as such.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
- Figur 1
- ein schematisches Diagramm, welches allgemein ein Gruppenantennensystem mit einer ersten Antennenntergruppe und einer zweiten Antennenuntergruppe und einem Kombinationsleitungsnetzwerk zeigt;
- Figur 2
- verschiedene Ausführungsbeispiele von 4-Tor-Leistungsteilem, wie sie für ein Kombinationsleitungsnetzwerk des erfindungsgemäßen Gruppenantennensystems verwendet werden können;
- Figur 3
- ein Diagramm, welches die Anpassungsbandbreite eines Gruppenantennensystems als Funktion des Reflexionsfaktors in Abhängigkeit von der Frequenz darstellt;
- Figur 4
- ein schematisches Diagramm eines Gruppenantennensystems gemäß einem ersten Ausführungsbeispiel der Erfindung;
- Figur 5
- in der Seitenansicht, Figur 5a), bzw. in der Aufsicht, Figur 5b), eine schematisierte Darstellung eines Gruppenantennensystems gemäß einem weiteren Ausführung der Erfindung;
- Figur 6
- in der Seitenansicht, Figur 6a), bzw. in der Aufsicht, Figur 6b), eine schematisierte Darstellung eines weiteren Ausführungsbeispiels eines Gruppenantennensystems gemäß der Erfindung;
- Figur 7
- in der Seitenansicht eine schematisierte Darstellung noch eines anderen Ausführungsbeispiels eines Gruppenantennensystems der Erfindung;
- Figur 8
- in der Seitenansicht eine schematisierte Darstellung noch eines anderen Ausführungsbeispiels eines Gruppenantennensystems gemäß der Erfindung; und
- Figur 9
- eine schematisierte Darstellung noch eines weiteren Ausführungsbeispiels eines erfindungsgemäßen Gruppenantennensystems.
- 10; 20; 30; 40; 50; 60
- Gruppenantenne
- 11; 21; 31; 41; 51; 61
- erste Antennengruppe
- 12; 22; 32; 42; 52; 62
- zweite Antennengruppe
- 13; 23
- Kombinationsleitungsnetzwerk
- 14; 24
- Phasenverschiebungseinrichtung
- 45
- dielektrische Schicht
- 46
- dielektrische Schicht
- 55
- Hohlleiterstrecke
- 56
- Hohlleiterstrecke
- 57
- Übergangsstrecke
- 58
- Übergangsstrecke
Claims (22)
- Gruppenantennensystem mit einer elektrisch großen Gruppenantenne (10; 20; 30; 40; 50; 60), die eine erste Antennenuntergruppe (11; 21; 31; 41; 51; 61) und eine zweite Antennenuntergruppe (12; 22; 32; 42; 52; 62) umfaßt, und mit einem Kombinationsleitungsnetzwerk (13; 23), das einen Eingang zur Aufnahme eines Antennenleistungssignals sowie einen mit der ersten Antennenuntergruppe (11; 21; 31; 41; 51; 61) verbundenen ersten Ausgang zur Abgabe eines ersten Ausgangssignals an die erste Antennenuntergruppe (11; 21; 31; 41; 51; 61) und einen mit der zweiten Antennenuntergruppe (12; 22; 32; 42; 52; 62) verbundenen zweiten Ausgang zur Abgabe des zweiten Ausgangssignals an die zweite Antennenuntergruppe (12; 22; 32; 42; 52; 62) aufweist, dadurch gekennzeichnet, daß das Kombinationsleitungsnetzwerk (13; 23) eine Phasenschiebeeinrichtung (14; 24) zum Erzeugen einer Phasenverschiebung zwischen den Ausgangssignalen des ersten Ausgangs und des zweiten Ausgangs vor deren Zuführung zu den Antennenuntergruppen (11, 12; 21, 22; 31, 32; 41, 42; 51, 52; 61, 62) enthält, und daß Mittel vorgesehen sind, um die Phasenverschiebung im Strahlengang der von den Antennenuntergruppen (11, 12; 21, 22; 31, 32; 41, 42; 51, 52; 61, 62) abgegebenen Antennenstrahlung zu kompensieren.
- Gruppenantennensystem nach Anspruch 1, dadurch gekennzeichnet, daß die Gruppenantenne (10; 20; 30; 40; 50; 60) zwei gleich große Antennenuntergruppen (11, 12; 21, 22; 31, 32; 41, 42; 51, 52; 61, 62) umfaßt oder aus mehreren solchen Paaren besteht.
- Gruppenantennensystem nach Anspruch 2, dadurch gekennzeichnet, daß die erste Antennenuntergruppe (11; 21; 31; 41; 51; 61) eine erste Halbantenne der Gruppenantenne (10; 20; 30; 40; 50; 60) bildet, und daß die zweite Antennenuntergruppe (12; 22; 32; 42; 52; 62) eine zweite Halbantenne der Gruppenantenne (10; 20; 30; 40; 50; 60) bildet.
- Gruppenantennensystem nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Phasenschiebeeinrichtung (14; 24) eine Phasenverschiebung vom Betrag 90° erzeugt.
- Gruppenantennensystem nach Anspruch 4, dadurch gekennzeichnet, daß die Mittel zum Kompensieren der Phasenverschiebung eine Verschiebung zwischen der von der ersten Antennenuntergruppe (11; 21; 31; 41; 51; 61) abgegebenen Strahlung und der von der zweiten Antennenuntergruppe (12; 22; 32; 42; 52; 62) abgegebenen Strahlung in der Hauptstrahlrichtung um eine Viertel Wellenlänge im Sinne einer Kompensation der von der Phasenschiebeeinrichtung (14; 24) erzeugten 90°-Phasenverschiebung bewirken.
- Gruppenantennensystem nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Antennenuntergruppen (21, 22; 31, 32) bezüglich der Hauptstrahlrichtung der Antenne gegeneinander verschoben sind.
- Gruppenantennensystem nach Anspruch 6, dadurch gekennzeichnet, daß die Antennenuntergruppen (21, 22) senkrecht zur Hauptstrahlrichtung der Antenne angeordnet sind und um eine Viertel Wellenlänge gegeneinander verschoben sind.
- Gruppenantennensystem nach Anspruch 6, dadurch gekennzeichnet, daß die Antennenuntergruppen (31, 32) schräg zur Hauptstrahlrichtung der Antenne angeordnet sind, und daß die Mitten der Antennenuntergruppen (31, 32) bezüglich der Hauptstrahlrichtung um eine Viertel Wellenlänge gegeneinander verschoben sind.
- Gruppenantennensystem nach Anspruch 8, dadurch gekennzeichnet, daß die Antennenuntergruppen (31, 32) auf einer gemeinsamen Ebene angeordnet sind.
- Gruppenantennensystem nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Antennenuntergruppen (41, 42) mit dielektrischen Schichten (45, 46) unterschiedlicher Dielektrizitätszahlen (εr1, εr2) bedeckt sind, welche die Phasenverschiebung der von den Antennenuntergruppen (41, 42) abgegebenen Strahlung kompensieren.
- Gruppenantennensystem nach Anspruch 10, dadurch gekennzeichnet, daß die dielektrischen Schichten (45, 46) eine solche Dicke (d) aufweisen, daß sie eine Verschiebung zwischen den von den Antennenuntergruppen (41, 42) abgegebenen Strahlungen um eine Viertel Wellenlänge im Sinne einer Kompensation der von der Phasenschiebeeinrichtung (14; 24) erzeugten 90°-Phasenverschiebung bewirken.
- Gruppenantennensystem nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß die Antennenuntergruppen (41, 42) in einer gemeinsamen Ebene angeordnet sind.
- Gruppenantennensystem nach Anspruch 10, 11 oder 12, dadurch gekennzeichnet, daß eine erste dielektrische Schicht (46) Luft ist, und daß eine zweite dielektrische Schicht (45) ein geschichtetes Medium mit einer Dielektrizitätszahl (εr1) ist, die größer als die Dielektrizitätszahl (εr2) von Luft ist.
- Gruppenantennensystem nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß an den Antennenuntergruppen (51, 52) Hohlleiterstrecken (55, 56) mit unterschiedlichen Querschnittsabmessungen angeordnet sind, welche die Phasenverschiebung der von den Antennenuntergruppen (51, 52) abgegebenen Strahlungen kompensieren.
- Gruppenantennensystem nach Anspruch 14, dadurch gekennzeichnet, daß die Hohlleiterstrecken (55, 56) eine um einen Unterschied (d) verschiedene Länge aufweisen, so daß eine Verschiebung der von den Antennenuntergruppen (51, 52) abgegebenen Strahlung um eine Viertel Wellenlänge im Sinne einer Kompensation der von der Phasenschiebeeinrichtung (14; 24) erzeugten 90°-Phasenverschiebung bewirkt wird.
- Gruppenantennensystem nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß die Antennenuntergruppen (51, 52) in einer gemeinsamen Ebene angeordnet sind.
- Gruppenantennensystem nach Anspruch 14, 15 oder 16, dadurch gekennzeichnet, daß am Ausgang der Hohlleiterstrecken (55, 56) Übergangsstrecken (57, 58) mit einem Übergang von schmalem Querschnitt auf weiten Querschnitt vorgesehen sind.
- Gruppenantennensystem nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Antennenuntergruppen (11, 12; 21, 22; 31, 32; 41, 42; 51, 52; 61, 62) in Richtung der Teilung elektrisch groß sind.
- Gruppenantennensystem nach Anspruch 18, dadurch gekennzeichnet, daß die Antennenuntergruppen (61, 62) in Richtung senkrecht zur Teilung klein sind.
- Gruppenantennensystem nach einem der Ansprüche 1 bis 19, dadurch gekennzeichnet, daß die Reflexionsfaktoren der Antennenuntergruppen (11, 12; 21, 22; 31, 32; 41, 42; 51, 52; 61, 62) gleich sind.
- Gruppenantennensystem nach einem der Ansprüche 1 bis 20, dadurch gekennzeichnet, daß das Kombinationsleitungsnetzwerk (13; 23) einen 4-Tor-Leistungsteiler enthält.
- Gruppenantennensystem nach Anspruch 21, dadurch gekennzeichnet, daß der 4-Tor-Leistungsteiler durch einen Wilkinsonteiler, einen 3-dB-Richtkoppler oder eine E-H-Hohlleiter-Doppel-T-Verzweigung gebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10101666A DE10101666C1 (de) | 2001-01-16 | 2001-01-16 | Gruppenantennensystem |
DE10101666 | 2001-01-16 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1223638A2 true EP1223638A2 (de) | 2002-07-17 |
EP1223638A3 EP1223638A3 (de) | 2003-05-14 |
EP1223638B1 EP1223638B1 (de) | 2004-07-14 |
Family
ID=7670664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01129695A Expired - Lifetime EP1223638B1 (de) | 2001-01-16 | 2001-12-13 | Gruppenantennensystem |
Country Status (3)
Country | Link |
---|---|
US (1) | US6768453B2 (de) |
EP (1) | EP1223638B1 (de) |
DE (1) | DE10101666C1 (de) |
Cited By (1)
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CN113273033A (zh) * | 2018-10-02 | 2021-08-17 | 芬兰国家技术研究中心股份公司 | 具有固定馈电天线的相控阵列天线系统 |
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US20060044189A1 (en) * | 2004-09-01 | 2006-03-02 | Livingston Stan W | Radome structure |
US7656345B2 (en) | 2006-06-13 | 2010-02-02 | Ball Aerospace & Technoloiges Corp. | Low-profile lens method and apparatus for mechanical steering of aperture antennas |
US11105918B2 (en) | 2017-06-05 | 2021-08-31 | Metawave Corporation | Nodal metamaterial antenna system |
US10942256B2 (en) | 2017-06-05 | 2021-03-09 | Metawave Corporation | Intelligent metamaterial radar for target identification |
US11005192B2 (en) | 2017-06-05 | 2021-05-11 | Metawave Corporation | Intelligent metamaterial radar having a dynamically controllable antenna |
US11005179B2 (en) | 2017-06-05 | 2021-05-11 | Metawave Corporation | Feed structure for a metamaterial antenna system |
CN110997440A (zh) | 2017-06-05 | 2020-04-10 | 美波公司 | 智能天线超材料方法和装置 |
US11133577B2 (en) | 2018-05-24 | 2021-09-28 | Metawave Corporation | Intelligent meta-structure antennas with targeted polarization for object identification |
US11385326B2 (en) | 2018-06-13 | 2022-07-12 | Metawave Corporation | Hybrid analog and digital beamforming |
US11217902B2 (en) | 2018-07-13 | 2022-01-04 | Metawave Corporation | Analog beamforming antenna for millimeter wave applications |
CN117477208A (zh) * | 2023-11-09 | 2024-01-30 | 西安交通大学 | 扩展移动终端设备天线带宽的方法 |
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DE957239C (de) * | 1955-01-26 | 1957-01-31 | Telefunken Gmbh | Antennenanordnung |
DE1020692B (de) * | 1957-03-11 | 1957-12-12 | Rohde & Schwarz | Richtantenne fuer hochfrequente elektrische Wellen |
DE1024587B (de) * | 1956-05-30 | 1958-02-20 | Rohde & Schwarz | Antenne, vorzugsweise fuer ultrakurze elektrische Wellen |
DE1105486B (de) * | 1958-08-21 | 1961-04-27 | Siemens Ag | Antennenanordnung mit phasen-verschoben erregten Strahlern |
DE3627597A1 (de) * | 1986-08-14 | 1988-02-18 | Licentia Gmbh | Konforme antenne fuer flugkoerper |
US5877660A (en) * | 1994-06-02 | 1999-03-02 | Nihon Dengyo Kosaku Co., Ltd. | Phase shifting device with rotatable cylindrical case having driver means on the end walls |
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US4849763A (en) * | 1987-04-23 | 1989-07-18 | Hughes Aircraft Company | Low sidelobe phased array antenna using identical solid state modules |
US5229776A (en) * | 1991-12-05 | 1993-07-20 | Allied-Signal Inc. | Method for field monitoring of a phased array microwave landing system far field antenna pattern employing a near field correction technique |
DE19636850A1 (de) * | 1996-09-11 | 1998-03-12 | Daimler Benz Aerospace Ag | Phasengesteuerte Antenne |
US6246369B1 (en) * | 1999-09-14 | 2001-06-12 | Navsys Corporation | Miniature phased array antenna system |
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2001
- 2001-01-16 DE DE10101666A patent/DE10101666C1/de not_active Expired - Fee Related
- 2001-12-13 EP EP01129695A patent/EP1223638B1/de not_active Expired - Lifetime
-
2002
- 2002-01-16 US US10/046,551 patent/US6768453B2/en not_active Expired - Lifetime
Patent Citations (6)
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DE957239C (de) * | 1955-01-26 | 1957-01-31 | Telefunken Gmbh | Antennenanordnung |
DE1024587B (de) * | 1956-05-30 | 1958-02-20 | Rohde & Schwarz | Antenne, vorzugsweise fuer ultrakurze elektrische Wellen |
DE1020692B (de) * | 1957-03-11 | 1957-12-12 | Rohde & Schwarz | Richtantenne fuer hochfrequente elektrische Wellen |
DE1105486B (de) * | 1958-08-21 | 1961-04-27 | Siemens Ag | Antennenanordnung mit phasen-verschoben erregten Strahlern |
DE3627597A1 (de) * | 1986-08-14 | 1988-02-18 | Licentia Gmbh | Konforme antenne fuer flugkoerper |
US5877660A (en) * | 1994-06-02 | 1999-03-02 | Nihon Dengyo Kosaku Co., Ltd. | Phase shifting device with rotatable cylindrical case having driver means on the end walls |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113273033A (zh) * | 2018-10-02 | 2021-08-17 | 芬兰国家技术研究中心股份公司 | 具有固定馈电天线的相控阵列天线系统 |
CN113273033B (zh) * | 2018-10-02 | 2024-03-08 | 芬兰国家技术研究中心股份公司 | 具有固定馈电天线的相控阵列天线系统 |
Also Published As
Publication number | Publication date |
---|---|
EP1223638A3 (de) | 2003-05-14 |
US6768453B2 (en) | 2004-07-27 |
US20020109638A1 (en) | 2002-08-15 |
DE10101666C1 (de) | 2002-09-12 |
EP1223638B1 (de) | 2004-07-14 |
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