WO1993000722A1 - Flat aerial - Google Patents
Flat aerial Download PDFInfo
- Publication number
- WO1993000722A1 WO1993000722A1 PCT/EP1992/000966 EP9200966W WO9300722A1 WO 1993000722 A1 WO1993000722 A1 WO 1993000722A1 EP 9200966 W EP9200966 W EP 9200966W WO 9300722 A1 WO9300722 A1 WO 9300722A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- arrangement
- flat antenna
- feed device
- flat
- Prior art date
Links
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
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0012—Radial guide fed arrays
Definitions
- the invention relates to a flat antenna, in particular for satellite radio reception, with a radiator arrangement and a feed device having a coupling device.
- Flat antennas of this type are known, for example, from a brochure from Matsushita or DE 40 26 432 AI.
- Such flat antennas have a radiator arrangement, which can consist both as a single radiator and as an arrangement of radiator elements which, for example, dipoles, small areas of various shapes, so-called patches, conductive surfaces or dual radiator elements, e.g. B. slots, circles, etc., may be.
- feed devices either consist of branched lines leading to each radiator element (coaxial, hollow or strip conductors) in the form of a tree structure or they can consist of a feed line in the form of a coaxial or at least one coupling device Waveguides and / or a waveguide radial line can be formed, as described for example in DE 40 26 432 AI.
- the flat antenna is not only supplied with a beam angle of 0 °, that is to say with a beam perpendicular to the antenna arrangement, but also with a steel angle of 12 ° referred to as the beam squint angle can. This beam angle is fixed and cannot be changed.
- phase shifters would lead to large losses in flat antennas for satellite radio reception, such beam swiveling circuits are by orders of magnitude too expensive for individual use and for the consumer area, so that they are necessary for the antennas described here cannot be used in DTH (Direct to Home) or TVRO (TV Receive Only) applications.
- phase shifters would also not be usable for economic reasons, because in the case of the flat antennas, in particular for satellite radio reception, only a one-time setting is required when the antenna is attached and not a constant beam angle change.
- the invention is therefore based on the object of creating a flat antenna, the beam angle of which is very easily adapted to the local conditions during assembly and in view of the most precise possible alignment of the antenna pattern to the radiation source, for example the satellites , can be changed easily.
- the object is achieved according to the invention in that the emitter arrangement and the feed device can be changed in their positions relative to one another.
- the measures according to the invention to arrange the radiator arrangement and the feed device of the flat antenna in a position-changing manner relative to one another make it possible in a simple manner to correct the flat antenna with the simplest means with regard to the alignment of the antenna diagram to the beam source, for example to a specific satellite, and thus optimal reception to reach.
- the antenna pattern is given an asymmetry which causes the beam to be pivoted.
- the antenna gain is reduced through such asymmetries. In practice, however, such an antenna loss can easily be tolerated if the corrections to the alignment are in the range of a few half-widths.
- An advantageous embodiment of the invention is that the position of the radiator arrangement and the feed arrangement can be adjusted in mutually parallel planes, that is to say perpendicular to the normal of the surface antenna.
- Moving the feed device laterally for example a feed network in the case of a strip line branching, or a radial line in the case of a round antenna, results in a continuous phase offset over the antenna surface, as a result of which the beam direction of the antenna is proportional to it Phase-of-set tends, namely the antenna pattern is drawn in the direction of the lagging current.
- the position of the emitter arrangement and the feed device relative to one another can be adjusted in the horizontal direction.
- a horizontal change in position it is also possible to provide a vertical change in position between the emitter arrangement and the feed device.
- These embodiments relate in particular to flat antennas which are arranged vertically on house walls, so that azimuth beam swiveling can be carried out by changing the horizontal position and / or swiveling by the vertical position.
- a particularly advantageous embodiment of the invention is that the position of the coupling device is adjustable perpendicular to the plane of the radiator arrangement.
- the coupling device that is to say the coupling point, is accordingly shifted mechanically, so that this in turn results in an asymmetry in the antenna pattern and thus a beam swiveling.
- the shift can be shifted linearly, in the case of a so-called "Radial Line Slot Antenna” (RLSA) in the radial direction in such a way that the pivoting of the antenna beam is optimized for alignment with the radiation source.
- RLSA Ring Line Slot Antenna
- the coupling device has an adjustable spherical cap.
- a spherical cap simplifies the setting of the coupling device or the coupling point.
- the embodiment with a spherical cap also has the advantage that good electrical contact is achieved with regard to good shielding and a weatherproof and environmentally protected closure can be realized.
- the object is achieved in connection with a flat antenna, in which a dielectric body is provided, particularly advantageously according to the invention in that the position of the dielectric body is variable. Due to the change in position of the dielectric body, which acts as a dielectric delay element, an asymmetry in the excitation structure of the flat antenna and thus a beam swiveling of the antenna pattern is again achieved.
- the flat antenna according to the invention with a dielectric body, the latter is mounted eccentrically and rotatable.
- any desired pivoting of the antenna beam is within the desired range Way possible.
- the use of the measures according to the invention is very advantageous, since this makes it easy to readjust for the optimal alignment of the antenna is what was previously only possible by mechanically swiveling the entire antenna.
- flat antenna is not only to be understood as a completely flat antenna, but also an antenna with an antenna aperture, which can have a more or less curved outer surface.
- 1 is a schematic representation of a flat antenna with a feed network having strip line branches as feed device
- Fig. 2 shows the schematic representation of an axially symmetrical
- FIG. 3 shows a further schematically illustrated embodiment of the flat antenna according to the invention with a spherical cap as an adjusting device.
- the square or rectangular flat antenna shown schematically in FIG. 1 consists of a radiator arrangement 1 with slots as radiator elements 2, a feed device 3 in the form of a feed network with branching strip lines 4 and a feed point 5.
- a conventional flat antenna of this type all radiator elements 2 are in a predetermined position corresponding to a suitable phase position, so that the radiator elements 2 are excited in accordance with this phase position, which is required to generate a predetermined beam direction of the antenna.
- the feed device 3 becomes laterally opposite the radiation arrangement 1 in this embodiment of the invention shifted so that there is a changed phase position and thereby the beam direction of the antenna in accordance with this changed phase position or this phase offset pivots.
- the pivoting takes place in such a way that the antenna diagram is drawn in the direction of the lagging current.
- the structure of the radiator elements 2 coupled to the feed network of the feed device 3 is shifted in the transverse direction in order in this way to radiate a beam effect through an asymmetrical coupling.
- the circular flat antenna shown in FIG. 2 a so-called “Radial Line S « z Antenna “(RLSA), has a circular radiator arrangement 11 with radiator elements 12 in the form of slots and a feed device 13 in the form of a hollow waveguide and a feed point 14 with a On- excitation via a coaxial cable 15.
- a so-called "Radial Line S « z Antenna” (RLSA)
- dielectric body 16 which is eccentrically mounted and rotatable. Since the dielectric body 16 acts as a delay element and with respect to the feed point
- the dielectric body 16 which changes the excitation structure of the RLSA in an asymmetrical manner, in turn results in a simple adjustment of the flat antenna to a radiation source by swiveling the antenna beam.
- the dielectric body 16 By designing the dielectric body 16 as an electrically mounted part, twisting it makes it possible to carry out the adjustment and fine adjustment in a simple manner.
- the antenna beam can also be pivoted in a simple manner by moving the feed point of the RLSA in the radial direction.
- FIG. 3 shows a further embodiment of the flat antenna according to the invention with a radiator arrangement 21 having slots 22, a feed device 23 in the form of a waveguide and a feed opening 24 which is provided in a spherical cap 25.
- An adjustment of the feed opening 24 and thus the fine adjustment of the beam direction of the antenna can be carried out in the simplest way by rotating the spherical cap 25 with the feed device 23.
- the Adjustment of the spherical cap 25 is easily possible from the outside.
- the spherical cap 25 is electrically and reliably contacted electrically with the feed device 23 ", which is important for the shielding.
- An environmentally and weatherproof closure can also be achieved in a simple manner by using a spherical cap.
- the radiator elements are changed in their electrical position for setting and adjusting the direction of the antenna beam relative to the feed device, which is normally a feed network.
- the electrical path lengths between the coupling point and a part of the radiator elements are set differently in comparison to the opposite part of the radiator elements on the radiator arrangement or the radiator element surface, so that a change in the phase position required to generate a beam direction of the antenna is thereby effected. is changed.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS931887A CZ188793A3 (en) | 1991-06-20 | 1992-05-04 | Flat antenna |
EP92909863A EP0589904A1 (en) | 1991-06-20 | 1992-05-04 | Flat aerial |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4120439.5 | 1991-06-20 | ||
DE19914120439 DE4120439A1 (en) | 1991-06-20 | 1991-06-20 | FLAT ANTENNA |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993000722A1 true WO1993000722A1 (en) | 1993-01-07 |
Family
ID=6434402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1992/000966 WO1993000722A1 (en) | 1991-06-20 | 1992-05-04 | Flat aerial |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0589904A1 (en) |
CZ (1) | CZ188793A3 (en) |
DE (1) | DE4120439A1 (en) |
WO (1) | WO1993000722A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4313397A1 (en) * | 1993-04-23 | 1994-11-10 | Hirschmann Richard Gmbh Co | Planar antenna |
DE10065299A1 (en) * | 2000-12-29 | 2002-07-04 | Bosch Gmbh Robert | Device for spatially panning a radar beam |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1812233A1 (en) * | 1968-03-08 | 1969-10-23 | Siemens Ag Albis | Directional radar antenna array |
US4307404A (en) * | 1978-03-20 | 1981-12-22 | Harris Corporation | Dichroic scanner for conscan antenna feed systems |
EP0280379A2 (en) * | 1987-02-27 | 1988-08-31 | Yoshihiko Sugio | Dielectric or magnetic medium loaded antenna |
EP0376701A2 (en) * | 1988-12-27 | 1990-07-04 | Harada Industry Co., Ltd. | Flat-plate patch antenna |
DE4026432A1 (en) * | 1989-08-21 | 1991-02-28 | Radial Antenna Lab Ltd | PLANAR ANTENNA |
EP0468623A1 (en) * | 1990-07-24 | 1992-01-29 | British Aerospace Public Limited Company | A layered frequency selective surface assembly and method of modulating the power or frequency characteristics thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3022506A (en) * | 1959-03-27 | 1962-02-20 | Hughes Aircraft Co | Arbitrarily polarized slot antenna |
GB2166600B (en) * | 1984-11-01 | 1988-12-29 | Matsushita Electric Works Ltd | Microwave plane antenna |
-
1991
- 1991-06-20 DE DE19914120439 patent/DE4120439A1/en not_active Ceased
-
1992
- 1992-05-04 CZ CS931887A patent/CZ188793A3/en unknown
- 1992-05-04 WO PCT/EP1992/000966 patent/WO1993000722A1/en not_active Application Discontinuation
- 1992-05-04 EP EP92909863A patent/EP0589904A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1812233A1 (en) * | 1968-03-08 | 1969-10-23 | Siemens Ag Albis | Directional radar antenna array |
US4307404A (en) * | 1978-03-20 | 1981-12-22 | Harris Corporation | Dichroic scanner for conscan antenna feed systems |
EP0280379A2 (en) * | 1987-02-27 | 1988-08-31 | Yoshihiko Sugio | Dielectric or magnetic medium loaded antenna |
EP0376701A2 (en) * | 1988-12-27 | 1990-07-04 | Harada Industry Co., Ltd. | Flat-plate patch antenna |
DE4026432A1 (en) * | 1989-08-21 | 1991-02-28 | Radial Antenna Lab Ltd | PLANAR ANTENNA |
EP0468623A1 (en) * | 1990-07-24 | 1992-01-29 | British Aerospace Public Limited Company | A layered frequency selective surface assembly and method of modulating the power or frequency characteristics thereof |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 6, no. 99 (E-111)(977) 8. Juni 1982 & JP,A,57 031 205 ( OKI DENKI KOGYO ) 19. Februar 1982 * |
Also Published As
Publication number | Publication date |
---|---|
CZ188793A3 (en) | 1994-03-16 |
DE4120439A1 (en) | 1992-12-24 |
EP0589904A1 (en) | 1994-04-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69613244T2 (en) | PLANAR GROUP ANTENNA FOR TWO FREQUENCIES | |
DE112004001506B4 (en) | Broadband, dual polarized base station antenna for optimal horizontal radiation pattern and variable vertical beam tilt | |
DE60113671T2 (en) | High-power and low-cost transceiver satellite antenna | |
DE2727883C2 (en) | Waveguide emitter for left- and right-handed circularly polarized microwave signals | |
EP2458680B1 (en) | Antenna for receiving circular polarised satellite radio signals | |
EP2256864B1 (en) | Antenna for circular polarisation with a conductive base | |
DE60035003T2 (en) | Dual polarized printed antenna and corresponding array antenna | |
EP2135324B1 (en) | Antenna apparatus for transmitting and receiving electromagnetic signals | |
DE102016207434B4 (en) | antenna device | |
EP2424036B1 (en) | Receiver antenna for circular polarised satellite radio signals | |
DE2610324A1 (en) | PHASED ANTENNA LINE | |
DE3538430C2 (en) | ||
EP0071069A2 (en) | Circularly polarised microwave antenna | |
DE3130350A1 (en) | VHF TURNTABLE AERIAL | |
DE68910728T2 (en) | Stripline array antenna. | |
EP0088948B1 (en) | Antenna comprising at least one dipole | |
DE3524503A1 (en) | LEVEL MICROWAVE ANTENNA | |
DE69833070T2 (en) | Group antennas with a large bandwidth | |
DE3926188A1 (en) | SLOT HEADER | |
WO2003075394A2 (en) | Allround aerial arrangement for receiving terrestrial and satellite signals | |
DE4008505A1 (en) | Mobile antenna for satellite communication system - uses etching process on substrate with two part assembly | |
EP3474374A1 (en) | Antenna system for circular polarised satellite radio signals on a vehicle | |
DE2632615C3 (en) | Satellite communication system | |
DE69420886T2 (en) | Antenna structure | |
EP0737371B1 (en) | Planar antenna |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CS HU PL |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1992909863 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: PV1993-1887 Country of ref document: CZ |
|
WWP | Wipo information: published in national office |
Ref document number: PV1993-1887 Country of ref document: CZ |
|
WWP | Wipo information: published in national office |
Ref document number: 1992909863 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1992909863 Country of ref document: EP |
|
WWR | Wipo information: refused in national office |
Ref document number: PV1993-1887 Country of ref document: CZ |