EP1880443A1 - Dispositif antenne pour un reseau d'antennes et reseau d'antennes pourvu d'une pluralite de dispositifs antennes de ce type - Google Patents

Dispositif antenne pour un reseau d'antennes et reseau d'antennes pourvu d'une pluralite de dispositifs antennes de ce type

Info

Publication number
EP1880443A1
EP1880443A1 EP06742313A EP06742313A EP1880443A1 EP 1880443 A1 EP1880443 A1 EP 1880443A1 EP 06742313 A EP06742313 A EP 06742313A EP 06742313 A EP06742313 A EP 06742313A EP 1880443 A1 EP1880443 A1 EP 1880443A1
Authority
EP
European Patent Office
Prior art keywords
antenna
waveguide
length
waveguide element
antenna array
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.)
Withdrawn
Application number
EP06742313A
Other languages
German (de)
English (en)
Inventor
Thorsten Thiele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teles AG Informationstechnologien
Original Assignee
Teles AG Informationstechnologien
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 Teles AG Informationstechnologien filed Critical Teles AG Informationstechnologien
Publication of EP1880443A1 publication Critical patent/EP1880443A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/064—Two dimensional planar arrays using horn or slot aerials
    • 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
    • H01Q13/02—Waveguide horns
    • 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
    • H01Q13/06—Waveguide mouths

Definitions

  • Antenna device for an antenna array and antenna array having a plurality of such antenna devices having a plurality of such antenna devices
  • the invention relates to an antenna device for an antenna array and antenna array having a plurality of such antenna devices.
  • antennas with a strong directional characteristic and high antenna gain for the reception of weak signals.
  • Such antennas are used in particular in the reception of signals emitted by geostationary satellites, because the signals reaching the ground are strongly attenuated.
  • This mirror or planar antennas are used, which can be aligned manually or via a motor device to the transmission sources.
  • the mechanical alignment of these antennas is slow and inflexible.
  • phased array antennas are known, in particular from military radar technology, which can be aligned quickly and accurately.
  • Such antenna arrays have a plurality of individual receiving or transmitting elements on the antenna surface.
  • Each of these receive or transmit elements is assigned an individual, electronically controllable phase shift unit. With the aid of these phase shift units, phase shifts can be imposed on the received or the electromagnetic waves to be transmitted.
  • phase shifts for example, the different path lengths can be compensated by a signal source to the individual receiving elements of the antenna array. This makes it possible to align the antenna array by setting a certain phase shift at the individual receiving elements to a transmission source. There- at the phase shifts are adjusted so that the interconnected electrical signals of the individual receiving elements overlap constructively.
  • the antenna array can be similarly aligned.
  • the phase shifts are chosen so that the emitted waves interfere constructively in the desired emission direction.
  • the alignment of the antenna takes place in the phased array antennas so electronically via the control of the individual phase shift units.
  • Phase-controlled antenna arrays are used not only in the field of radar technology, but also for receiving signals from civilian satellites - such as geostationary TV satellites.
  • DE 195 31 309 C2 describes a phased array antenna as a receiving system for satellite broadcasting.
  • the antenna can be mounted flat on a house wall, since no mechanical alignment of the antenna is necessary on the satellite to be received.
  • phase-controlled antenna arrays A disadvantage of the known phase-controlled antenna arrays is that the realization of the electronic phase shift units and the necessary driver circuits is complicated, since high-frequency signals in the GHz range must be processed.
  • a variety of influences are to be considered, which have an effect in this frequency range - such as non-linearities, contact resistance, parasitic capacitances or inductances of the materials used.
  • it is difficult to realize the required high-frequency components low attenuation, temperature stable and low noise.
  • the invention has for its object to provide an antenna device for an antenna array, which manages without complex electronic Signalauswaktechniken. This object is achieved by the antenna device with the features of claim 1 and by an antenna nenarray according to claim 13. Preferred and advantageous embodiments are specified in the subclaims.
  • the solution according to the invention provides an antenna device which has a waveguide element for receiving and / or emitting electromagnetic waves.
  • the antenna device comprises length adjustment means for ( changing the length of the waveguide element.)
  • An antenna device is provided which enables phase adjustment of a signal received or to be transmitted by the antenna device without electronic phase shift units caused by the length adjustment means, as can be changed by the change in length of the waveguide element, the signal path of a received or radiated from the antenna device wave.
  • the phase relationship which the electromagnetic waves have after passing through the waveguide elements of the individual antenna devices relative to one another can be varied via the adjustable length of the waveguide elements.
  • the antenna device according to the invention therefore provides an arrangement for an antenna array which in a simple manner effects an adjustable phase shift of the individual incoming or to be transmitted waves.
  • the antenna array is switched to a transmitting or receiving source via the variation of the lengths of the individual waveguide elements-and the resulting setting of the phase relationships of the individual waves. directable. Elaborate electronic high frequency components are not needed.
  • the length adjustment means include piezo actuators, wherein the piezo actuators are connected to the waveguide element. This causes a change in length of the waveguide element by a change in length of the piezo actuators.
  • the piezo actuators With the piezo actuators, a device for changing the length of the waveguide element is available, which has a very high adjustment accuracy (reaching into the ⁇ m range) and enables a stable change in length.
  • a further preferred embodiment of the antenna device provides that the piezo actuators are at least partially connected in series. This adds up the changes in length of the individual piezo actuators, which also larger adjustment can be realized.
  • the ability to set even larger adjustment paths is important because the wavelengths of the signals to be received or transmitted can be in the cm range - such as when receiving or transmitting satellite signals.
  • the antenna device preferably has length setting means with piezoactuators which can be activated via a digital signal.
  • a specific displacement can be set to a piezo actuator.
  • the total adjustment path is set by the number of switched piezoactuators.
  • the waveguide element comprises an elastic material, in particular a plastic coated with a metal.
  • This provides a material with high electrical conductivity, which, as a waveguide material, causes little attenuation of the guided electromagnetic wave and is variable in length.
  • the variable-length waveguide element it would also be possible to use polymers which themselves have a high conductivity.
  • a length-adjustable waveguide element may also be constituted by a plurality of hollow elements which can be plugged into one another and are displaceable relative to one another.
  • the waveguide element is thus telescopically formed from at least 2 hollow elements, wherein at least one hollow element is displaceable relative to a further and thus allows a length adjustment of the waveguide element.
  • the waveguide element has a rectangular, round or elliptical cross section in order to ensure good guidance of the electromagnetic wave with low damping.
  • a probe for decoupling or feeding electromagnetic waves from or into the waveguide element is provided.
  • the probe can have, for example, a metal piece which is arranged at a specific distance from the waveguide walls in the interior of the waveguide element is. The distance to the walls depends on the wavelength of the electromagnetic wave to be coupled in and out.
  • the probe is arranged in the end region of the waveguide element and connected to the waveguide element, which lies opposite the reception or emission side of the waveguide element.
  • This causes a change in length of the waveguide element changes the distance of the probe to the receiving or Abstrahlseite the waveguide element according to the change in length of the waveguide element.
  • the signal path of a signal emitted by a signal source or a signal to be transmitted to a receiver to the probe can be changed.
  • the probe preferably has a straight or curved conductor element, the electrically effective length of which
  • Tuning of the probe to a specific transmission or reception frequency is adjustable. Furthermore, the distance of the waveguide back wall to the probe is preferably adjustable. With these embodiments of the antenna device, it is possible to set the probe to a specific transmission or reception frequency, e.g. quickly switch between different transmission or reception frequencies.
  • the length of the conductor element can thereby by arranging about a capacitor or a coil on the physical
  • the resulting electrically effective length is in turn adjustable by varying, for example, the arranged capacitor or coil, whereby electrical tuning to a receive or transmit frequency is possible.
  • a change in the effective length of the conductor element can also be achieved by changing the physical length. to be targeted; for example, by virtue of the fact that the conductor element, similar to the waveguide element, has a variable-length material and / or intermeshing structures which can be displaced relative to one another.
  • the setting of the length can then also be done via one or more piezo actuators.
  • the adjustment of the distance of the probe to the waveguide back wall can be carried out analogously to the adjustment of the waveguide length, for example with piezo actuators, e.g. bit-serially controllable.
  • the waveguide element have separately controllable piezo actuators for adjusting the waveguide back wall.
  • the probe itself to include piezoactuators with which the probe can be moved away from or towards the rear wall of the waveguide.
  • the waveguide element has an element which influences the speed of the electromagnetic wave guided in the waveguide element and is used, for example. is movably arranged in the interior of the waveguide element.
  • the interaction of the introduced into the waveguide element element can be changed with the field components of the guided wave by moving the element.
  • the speed of the shaft guided in the waveguide element is thus variable by moving - in particular turning - of the element arranged in the waveguide element.
  • the waveguide element may in this case comprise a foil which has a dielectric and / or a metallic material.
  • the foil is in this case rotatably arranged within the waveguide element and can be adjusted by the means for changing the velocity of the electromagnetic wave guided in the waveguide element.
  • the film influences at least one field component of the guided wave in the waveguide element and thus the speed speed of the guided wave.
  • the orientation of the film with respect to a field component of the wave guided in the waveguide element can be changed.
  • the interaction of the film with this field component is amplified or attenuated when turning the film, whereby the speed of the waveguide element passing through shaft is changed.
  • the speed and thus the phase of the waveguide element passing through shaft adjustable.
  • the waveguide element comprises a material which changes the speed of the guided in the waveguide element electromagnetic wave. This can additionally increase the change in the transit time caused by the change in length of the waveguide element which requires an electromagnetic wave for passing through the waveguide element.
  • an antenna array which comprises a plurality of the antenna devices according to the invention.
  • Such an antenna array allows the phase relationship that the electromagnetic waves have after passing through the waveguide elements to each other to be adjustable. In this case, the setting of the phase relationship via theHarneinstellstoff the individual antenna devices.
  • an antenna array which can be aligned via a phase adjustment of the individual antenna devices to a transmission source or a receiver, wherein the phase matching no electronic phase shift units are needed.
  • the individual signals received by the individual antenna devices of the antenna array are subjected to a phase shift such that a constructive interference of the individual signals results when the individual signals are connected together.
  • a total signal with maximum field strength In order to can be generated with optimum setting of all phase shifts a total signal with maximum field strength.
  • phase shifts to be set are chosen to align the antenna array such that e.g. Phase shifts due to path length differences between a transmission source and the individual antenna devices of the antenna array can be compensated.
  • other effects that have an influence on the phase behavior of the individual signals can be compensated.
  • additional phase shifts may occur when the waves are being coupled in or out of the waveguide elements, which can be taken into account by appropriately adjusting the phase shifts at the individual antenna devices.
  • the antenna array is to be aligned by adjusting phase shifts.
  • the phase shifts are adjusted such that the individual signals emitted by the individual antenna devices of the antenna array are structurally superimposed in the emission direction and thus a transmission signal in the desired direction with high field strength is generated.
  • the antenna array has a coupling device for merging the individual waveguide elements to form a common waveguide.
  • a coupling device for merging the individual waveguide elements to form a common waveguide.
  • flexible connecting elements can be provided, which are connected to the waveguide elements of the individual antenna devices.
  • the flexible connecting elements carry the partial signals, which now have the same phase due to the different lengths of the waveguide elements according to the invention.
  • the common probe is designed such that it comprises a conversion element for the frequency conversion of the received or to be transmitted signals. This makes it possible that the signals registered by the probe or to be coupled into the waveguide element signals can be transmitted at a lower frequency, for example, the leads and a possibly preceding or subsequent signal processing must have no special high-frequency characteristics.
  • the antenna array comprises a central transmitting and / or receiving unit with a control device for controlling the length adjusting means of the individual antenna devices.
  • a control device for controlling the length adjusting means of the individual antenna devices.
  • the antenna array can be aligned automatically to about a transmission source.
  • the control signal in a first step evaluates the total signal, wherein e.g. It is possible to check whether the total signal fulfills a definable termination criterion.
  • a total signal that
  • Summed signal of the individual antenna devices are generated and set as a termination criterion, the amount of voltage of the sum signal.
  • termination criteria e.g. the signal-to-noise ratio of the sum signal.
  • the control device sends a control signal to at least one longitudinal adjusting means and / or at least one means for changing the speed of the guided in the waveguide element electromagnetic wave of the antenna devices of the antenna array transmitted. This causes a change in the phase of the guided in the waveguide elements of the antenna devices electromagnetic waves. In this case, as long as a control signal is generated until the termination criterion is met.
  • the antenna array is thus able to adjust itself automatically to a transmission source - such as a geostationary satellite for receiving TV or other data signals.
  • a transmission source such as a geostationary satellite for receiving TV or other data signals.
  • the alignment settings for specific transmission sources can be set in the control device or stored after finding the transmission source, in order to allow, for example, a fast switching between different transmission sources.
  • the control device additionally has location means (such as GPS) to allow an automated, accurate presetting of the orientation of the antenna array.
  • the central transmitting and / or receiving unit has a conversion element for frequency conversion of the received or to be transmitted signals.
  • a compactly realizable antenna array is provided, from which the received or to which the signals to be transmitted can be transmitted at a lower frequency.
  • FIG. 1 shows an antenna device with a waveguide element to which a plurality of piezoactuators are arranged for setting a change in length
  • FIG. 2 shows an antenna device with a telescopically formed waveguide element
  • FIG. 3 a sectional view of an antenna array with two antenna devices
  • FIG. 4 is a sectional view of a section of an antenna array with two antenna devices, the waveguide elements of the antenna devices being connected to one another via a coupling device;
  • 5a shows an antenna array with a plurality of antenna devices with length-adjustable waveguide elements in a first orientation
  • FIG. 5b shows an antenna array with a multiplicity of antenna devices with length-adjustable waveguide elements in the second first orientation
  • FIG. 6 a shows a schematic representation of an aligned antenna array
  • Figure 6b is a schematic representation of a further alignment variant of the antenna array.
  • FIG. 1 shows an antenna device 1 which is arranged on a substrate plate 3.
  • the antenna device 1 has a waveguide element 2, which acts as an antenna for receiving or emitting electromagnetic waves and as a conductor of the received or to be emitted electromagnetic waves.
  • two piezo-actuators 10 are arranged on the substrate plate 3.
  • the waveguide element 2 on the opposite side of the receiving or Abstrahlseite a waveguide back wall 5, via Connecting elements 4 is connected to the piezo actuators 10.
  • the piezo-actuators 10 each consist of a plurality of piezo-actuators 11, which are connected in series.
  • the individual piezoelectric actuators 11 are adjustable via individual control units or a common control unit (not shown).
  • the substrate plate 3 is made of a material which is well transparent in the wavelength range of the waves to be received or radiated (for example, a plastic) or has a bore in the region of the waveguide element 2.
  • a probe for coupling and decoupling the received or to be emitted electromagnetic wave is arranged in the interior of the waveguide element 2.
  • This probe has e.g. a straight or bent shaped conductor piece and is placed at a distance from the walls of the waveguide element 2, which depends on the wavelength of the waves to be received or radiated.
  • the distance between the probe and the upper waveguide edge or waveguide back wall 5 is substantially constant in one embodiment (it is ⁇ / 4, where X is the wavelength to be detected). In another embodiment, this distance is adjustable, so that the frequency of the wavelength to be detected is adjustable. After adjusting the frequency, however, this distance is then preferably constant again insofar as a change in the waveguide length or the phase does not change this distance.
  • the adjustment of the distance between the probe and the waveguide rear wall takes place, for example, via the piezo actuators, the probe then being mechanically connected to one of the actuators.
  • the piezoelectric actuator 10 connected to the waveguide element 2, it is possible to change the length of the waveguide element 2.
  • the phase which in the hollow terelement 2 guided » electromagnetic waves after passing through the waveguide element 2 or at the location of the probe have adjustable.
  • the waveguide element 2 has a material whose length is reversibly adjustable.
  • plastics which are e.g. coated with a metal in question.
  • conductive polymers can be used, these polymers must have sufficient conductivity to keep the attenuation of the guided over the waveguide element 2 shaft small.
  • FIG. 2 shows an antenna device 1 'which has a telescopic tube-like waveguide element 2'.
  • This hollow conductor element 2 ' comprises the two hollow elements 2a', 2b ', wherein the hollow element 2a' is arranged displaceably in the hollow element 2b '.
  • the hollow element 2b ' is arranged on a substrate plate 3'.
  • the hollow element 2a ' analogously to the waveguide element 2 of Figure 1 on the waveguide back wall 5' connecting elements 4 ', via the two piezo-alternator 10' with the hollow element 2a 'are connected.
  • the piezo-actuators 10 ' have individual piezo-actuators 11'.
  • the hollow element 2a ' should have the smallest possible wall thickness. This ensures that the difference in the inner diameter of the hollow elements 2a ', 2b' is small. Thus, the hollow elements 2a ', 2b' similar conduction properties, whereby the occurring at the transition of the hollow elements additional attenuation of the guided electromagnetic wave is low.
  • FIG. 3 shows two antenna devices 1 "arranged adjacently on a substrate plate 3".
  • the antenna devices 1 are elements of an antenna array, which may also have other antenna devices.
  • the antenna devices 1 "have waveguide elements 2" analogous to the antenna device 1 of FIG.
  • Piezoverstellern 10 '' are connected.
  • the piezo-actuators 10 are composed of individual piezo-actuators H".
  • the length of the individual waveguide elements 2 is set via the piezo-variators 10".
  • By adjusting the length of the waveguide elements 2 '' is analogous to the embodiment of Figure 1, the phase relationship, which have the guided in the waveguide element 2 electromagnetic waves after passing through the waveguide element 2, set.
  • the piezo actuators H " are controlled via a piezo control 30.
  • the actuation of the piezoactuators H " can take place digitally, with a defined switching voltage being applied by the piezo control 30 for deflecting the piezoactuators H" to the azo-actuating piezoactuators H ".
  • a single piezo actuator H '' is deflected by a fixed length, so that the Alterverstellfur the piezoseller 10 '' on the number of deflected piezo actuators H '' set becomes.
  • the lengths of the two adjacent waveguide differ by the amount .DELTA.l.
  • each probe 20 for coupling or coupling of electromagnetic waves in the waveguide elements 2 '' are arranged.
  • the probes 20 are connected to the respective waveguide elements 2 '' and arranged in each case on the waveguide rear walls (5 '').
  • the signal path to the probe 20 via a change in length of the waveguide elements 2 '' can be adjusted.
  • the probes 20 are connected to a central transmitting and / or receiving unit 40.
  • the central transmitting and / or receiving unit 40 (shown schematically in FIG. 3) has e.g. Also, a conversion element (not shown) that converts the frequency of the received or the signal to be transmitted into a lower (receive) or higher (send) frequency. A converted received signal can then be displayed on a
  • the central transmitting and / or receiving unit 40 may additionally have a control device (not shown) for aligning the antenna array with a transmitting source (Q).
  • the control device evaluates the signals arriving at the central transmitting and / or receiving unit 40.
  • the electrical signals transmitted by the individual probes 20 to the central transmitting and / or receiving unit 40 can be added and the magnitude of the sum signal can be determined. Due to interference effects, the magnitude of the sum signal depends on the phase position of the individual electrical signals arriving at the central transmitting and / or receiving unit 40.
  • An automatic alignment of the antenna array on a transmission source is effected in that the control unit transmits control signals to the piezo controller 30 and thus causes an adjustment of the lengths of at least one waveguide element of the antenna array.
  • the phase position of the electrical transmission signals arriving at the central transmitting and / or receiving unit 40 changes, and thus approximately the magnitude of the sum signal.
  • the regulation of the length of the waveguide elements takes place until a predefined termination criterion is met - for example, when a predetermined amount of a voltage of the sum signal is exceeded.
  • the piezo controller 30 and the central transmitting and / or receiving unit 40 need not necessarily be arranged separately.
  • the piezo controller 30 and the central transmitting and / or receiving unit 40 need not necessarily be arranged separately.
  • FIG. 4 shows two antenna devices 300 with length-adjustable waveguide elements 310.
  • the waveguide elements 310 of the two antenna devices 300 are connected via a coupling device 320 and are combined to form a common waveguide 330.
  • the coupling device 320 flexible additional waveguide elements 325, which are connected to the length-adjustable waveguide elements 310.
  • the additional elements 325 are flexible in that the length of the waveguide elements connected to them is variable.
  • the length of the additional waveguide elements 325 itself is fixed in order not to compensate for the effect of the change in length of the waveguide elements 310 again; they are referred to below as bendable.
  • additional waveguide elements 325 By means of the additional waveguide elements 325, it is thus possible to connect the coupling device 320 with the variable-length waveguide elements 310 in such a way that changes in the length of the waveguide elements 310 are possible.
  • flexible additional waveguide elements 325 may be used as bellows-shaped hollow elements made of metal. Such hollow elements are bendable, but the length of the bellows-shaped hollow elements remains substantially constant.
  • An advantage of the illustrated arrangement is that by combining the waveguide elements 310 to form a common waveguide, a common probe 350 can be provided for coupling or decoupling an electromagnetic wave from or into the waveguide elements. Thus, it is not necessary to equip the individual waveguide elements with individual probes.
  • the design of the coupling device is not limited to combining the waveguide elements of only two antenna devices, but rather it is also possible to connect a plurality of antenna devices - in particular all waveguides of the individual antenna devices arranged within an antenna array.
  • additional special waveguide elements can be provided in addition - such as waveguide insulators to avoid Koch Anlagen cement.
  • FIG. 5a shows a schematic representation of a complete antenna array 60 which has a multiplicity of antenna devices 100 which are arranged on a substrate plate 110.
  • the antenna devices 100 have length-adjustable waveguide elements 120 for adjusting the phase of the electromagnetic waves guided in the waveguide elements 120.
  • the individual waveguide elements 120 are set such that their lengths decrease linearly from one side of the antenna array 60 to the opposite side up to an amount ⁇ .
  • the antenna array 60 becomes a transmitting source positioned laterally of the antenna array 60 or directed towards the radiation towards this side.
  • the path length differences occurring in the case of lateral incidence or emission of an electromagnetic wave on or from the antenna array 60 are compensated by the different lengths of the waveguide elements 120.
  • phase differences of the incoming orgerschendenden waves are compensated, whereby the waves received from the individual antenna devices 100 or constructively overlap waves.
  • the antenna array is approximately aligned with a transmission source or radiates in a certain direction.
  • FIG. 5b schematically shows the alignment of the antenna array of FIG. 5a with a transmission source or a receiver, the transmission source or the receiver being positioned on the other side of the antenna array in comparison to FIG. 5a.
  • the lengths of the waveguide elements likewise decrease linearly from the input or emission side to an amount ⁇ in order to compensate for the path length differences that occur.
  • FIGS. 6a and 6b show the schematic illustration of further alignment variants of an antenna array 200.
  • the antenna array 200 is already positioned to the transmission source or to a receiver such that the surface normal of the antenna array 200 points in the direction of the transmission source or the receiver.
  • FIG. 6 a shows how lateral differences in length of the paths between the transmission source (receiver) and the various antenna devices of the antenna array 200 are compensated by the length variation of the waveguide elements of the individual antenna devices.
  • the antenna devices arranged in the middle of the antenna array 200 are adjusted so that waveguide elements are longer than the waveguide elements of the laterally arranged antenna devices.
  • the length of the individual hollow sections terimplantation decreases approximately linearly from the center to the edge of the antenna array.
  • FIG. 6b shows another possibility for compensating lateral path length differences.
  • the lengths of the waveguide elements of the antenna devices disposed centrally in the antenna array are set shorter than those of the waveguide elements located on the edge.
  • the waveguide elements of the outer antenna devices are extended so that incoming from the transmission source on the antenna array or the emitted to a receiver waves have a phase difference of one wavelength and thus overlap constructively.
  • maximum deflections of the waveguide elements are required which correspond to the difference between a multiple of the wavelength of the electromagnetic wave to be received or transmitted and the maximum path length difference occurring.
  • the lengths of the individual waveguide elements are not linearly changed over the antenna array, but the end portions of the waveguide elements are arranged along a circular segment in order to achieve a better match, for example, to the emission lobe of a transmission source.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

Dispositif antenne pour un réseau d'antennes, qui possède un élément guide d'ondes (2, 2', 2'') destiné à recevoir et / ou à émettre des ondes électromagnétiques ainsi que des moyens de réglage en longueur (10, 10', 10'') permettant de modifier la longueur de l'élément guide d'ondes. La présente invention concerne en outre un réseau d'antennes possédant une pluralité de dispositifs antennes de ce type.
EP06742313A 2005-05-06 2006-05-08 Dispositif antenne pour un reseau d'antennes et reseau d'antennes pourvu d'une pluralite de dispositifs antennes de ce type Withdrawn EP1880443A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510021826 DE102005021826B4 (de) 2005-05-06 2005-05-06 Antennenvorrichtung für ein Antennenarray und Antennenarray mit einer Mehrzahl derartiger Antennenvorrichtungen
PCT/DE2006/000791 WO2006119742A1 (fr) 2005-05-06 2006-05-08 Dispositif antenne pour un reseau d'antennes et reseau d'antennes pourvu d'une pluralite de dispositifs antennes de ce type

Publications (1)

Publication Number Publication Date
EP1880443A1 true EP1880443A1 (fr) 2008-01-23

Family

ID=36763397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06742313A Withdrawn EP1880443A1 (fr) 2005-05-06 2006-05-08 Dispositif antenne pour un reseau d'antennes et reseau d'antennes pourvu d'une pluralite de dispositifs antennes de ce type

Country Status (3)

Country Link
EP (1) EP1880443A1 (fr)
DE (1) DE102005021826B4 (fr)
WO (1) WO2006119742A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437067A (en) * 1943-11-17 1948-03-02 Philco Corp Adjusting means for transmission lines
US4115782A (en) * 1976-06-21 1978-09-19 Ford Motor Company Microwave antenna system
US4138683A (en) * 1977-07-21 1979-02-06 Rca Corporation Short radiating horn with an S-shaped radiating element
US6281766B1 (en) * 1998-06-01 2001-08-28 Motorola, Inc. Stacked piezoelectric actuators to control waveguide phase shifters and method of manufacture thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006119742A1 *

Also Published As

Publication number Publication date
WO2006119742A1 (fr) 2006-11-16
DE102005021826A1 (de) 2006-11-09
DE102005021826B4 (de) 2009-01-02

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