EP3610537A1 - Breitbandige rückseitig abgedeckte schlitzantenne und antennengruppen damit - Google Patents
Breitbandige rückseitig abgedeckte schlitzantenne und antennengruppen damitInfo
- Publication number
- EP3610537A1 EP3610537A1 EP18718677.0A EP18718677A EP3610537A1 EP 3610537 A1 EP3610537 A1 EP 3610537A1 EP 18718677 A EP18718677 A EP 18718677A EP 3610537 A1 EP3610537 A1 EP 3610537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slot antenna
- slot
- feed
- housing wall
- feed element
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
- H01Q5/385—Two or more parasitic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/28—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements
-
- 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
- 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
Definitions
- the invention relates to a broadband back-covered slot antenna and antenna groups with it.
- Modified T-Bar Fed Slot antennas are e.g. known from US 4, 101, 900 A.
- Wideband slot antennas with low VSWR are e.g. from US 6,150,988 A, and wideband cavity backend antennas are e.g. from US Pat. No. 7,339,541 B2.
- Fig. 1 is a front view of the slot antenna according to an embodiment of the present invention.
- Fig. 2 is a plan view of a cross section through a slot antenna according to a
- Fig. 3 is a rear view of a group antenna comprising two subgroups, each formed of 2 slot antennas, according to an embodiment of the present invention.
- Fig. 4 is a feed element with unilaterally open slots according to a
- Fig. 5 is a feed element with open on both sides slots according to a
- 6a is a 3D view of a slot antenna according to an embodiment of the present invention.
- 6b is an enlarged 3D view of a section with the feed point according to an embodiment of the present invention.
- the invention replaces two columns of standard 8-bin fields, which usually cover the radiated area (HPBW ⁇ 160 °). In contrast to the construction with 8-element fields, the invented antenna system is completely integrated on the smallest
- the invention has an extremely compact for this frequency and power range, as well as in
- a broadband emission of e.g. 470 to 790 MHz or others
- FIG. 1 shows an embodiment of a proposed slot antenna 100. This comprises a circumferential housing wall 10, one to the housing wall 10th
- feed element 12 with a feed point 101 for feeding the feed element 12.
- the feed element 12 is electrically connected at two mutually opposite connection points 121, 122 with the housing wall 10. More specifically, the junctions are located at a portion of the housing wall 10 where the feed point 101 is not located. Further, the feed element 12 at the connection points 121, 122 narrower than in the central region between the connection points 121, 122. At the edge, so one of
- the middle region between the connection points 121, 122, preferably in the extension of the maximum width BS of the feed element 12 is the feed point 101.
- a conductor 200 for feeding the slot antenna 100 via a feed point corresponding to Opening 101 a in the housing wall 10 are connected, such as shown in Figures 2, 3 or 6b.
- the feed element 12 has at least two slots 123.
- the feed element 12 has approximately the shape of a
- the opposite side is preferably flattened. Further, the distance B from the bending edge M to the housing wall 10 on the side of the flattened portion of the feed element 12 is greater than the distance A between the edge of the flattened
- the bending edge M is a line or edge extending approximately through the center of the feed element 12 and substantially parallel to the flattened region.
- the bending edge M is approximately equal to 10-20%, but also more than 20%, of the width BS of the feed element 12, measured on a (imaginary) line at the widest region between feed point 101 and opposite housing wall or flattened area runs.
- the part of the feed element 12 with the flattened area in the direction of the rear wall 1 first be bent of the housing, preferably at an angle of up to 30 °. But he can not be bent, then the bending angle would be 0 °.
- the conductor 200 connected to the feed point 101 is connected via a housing inner conductor 400 to the inner conductor of a plug connection 300, such as e.g. shown in Figures 2 or 3.
- the outer conductor of the connector 300 is connected to the circumferential housing wall 10.
- the housing wall 10 is preferably made of an electrically conductive or conductive material.
- the feed element 12 is made of an electrically conductive or conductive material such as sheet metal or of an electrically conductive layer.
- Inner conductor 200 may be centered with housing inner conductor 400 via an insulating disk.
- the length AS of the feed element 12 is greater than 0.05 or 0, 1 or 0.2 or 0.3 or 0.4 or 0.5 or 0.6 or 0.7 or 0.8 or 0.9 or 1, 0 or 1, 2 or 1, 5 or 2 wavelengths. Further, the length AS of the feed element 12 is less than 0.05 or 0.1 or 0.2 or 0.3 or 0.4 or 0.5 or 0.6 or 0.7 or 0.8 or 0.9 or 1, 0 or 1, 2 or 1, 5 or 2 wavelengths.
- the length AS is greater than 0.3 and less than 2 wavelengths, more advantageously greater than 0.5 and less than 1, 5 wavelengths. Particularly advantageously, the length AS is approximately one wavelength. The wavelength refers to the center frequency fm of the frequency range covered by the antenna.
- a relative bandwidth Br of 50% can be achieved with a VSWR of, for example, better than 1.1.
- the relative bandwidth B r is calculated as follows:
- the (maximum) width BS of the feed element 12 is greater than 0.01 or 0.02 or 0.05 or 0, 1 or 0.2 or 0.3 or 0.4 or 0.5 or 0.6 or 0 , 7 or 0.8 or 0.9 or 1, 0 wavelengths. Further, the maximum width BS of the feed element 12 is less than 0.01 or 0.02 or 0.05 or 0, 1 or 0.2 or 0.3 or 0.4 or 0.5 or 0.6 or 0.7 or 0.8 or 0.9 or 1, 0 wavelengths.
- the width BS is greater than 0.01 and less than 1 wavelength, more advantageously, the width BS is greater than 0, 1 and less than 0.5 wavelengths.
- the width BS 0.3 x length AS.
- each slot 123 is unilaterally open, as shown in Fig. 4. Further, each slot 123 is optionally open on both sides, as shown in Fig. 5. Alternatively, each slot 123 may be closed on both sides.
- the opening or openings advantageously point in the direction of the outside of the feed element 12, i. the closest housing wall 10, as seen from the figures.
- the slots 123 of the feed element 12 and their adjacent regions 124 may have radii or curves.
- Connecting points 121, 122 are at an angle W1, as shown in Figure 4 and Figure 5.
- the angle W1 is preferably measured between the inner edges of the outermost portions of the slots 123, but can also be measured between the outer edges of the outermost portions of the slots 123, since the slot 123 and the slot width is very small, so that there are no significant deviations ,
- the angle W1 is less than 80 °, 70 °, 60 °, 50 °, 40 °, 30 °, in particular less than 65 °. Furthermore, the angle W1 is greater than 80 °, 70 °, 60 °, 50 °, 40 °, 30 °, in particular greater than 45 °. Preferably, the angle W1 is between 45 ° and
- the slots 123 extend in the regions which are respectively farther from the
- junctions 121, 122 are substantially parallel to each other, as in FIG.
- Figures 1, 4 and 5 are shown.
- Figure 2 shows a cross section through a slot antenna 100 and a radome, wherein at least on one outer side, preferably on both outer sides a cover longitudinal plate 104 is located, which together with parts of the circumferential housing wall 10 in different areas each have a free space for the
- Wiring 102 defined.
- the longer width BA2 of the cover longitudinal plate 104 is greater than the shorter width BA1 of the cover longitudinal plate 104th
- the cover longitudinal plate 104 has two sections AL1 and AL2, which form a portion cover longitudinal plate AL.
- the two sections are preferably formed from one piece, but at an angle to each other.
- the section AL1 of the cover longitudinal plate 104 encloses with the encircling housing wall 10 an angle WA, which is between 10 ° and 80 °, preferably between 20 ° and 45 °.
- the cover longitudinal plate 104 preferably comprises a second section or area AL2 angled away from the first section AL1.
- the second section AL2 may also have a curvature instead of an angle, which implies a kink.
- the cover longitudinal plate 104 is, as the term sheet already shows, made of an electrically conductive material.
- the slot antenna includes at least two parasites mirrored to the center of the antenna, each parasite having a parasitic element 106 extending in a section P1 substantially parallel to the section AL1 of the longitudinal plate 104 cover, or slightly angled thereto, which is preferably less than ⁇ 10 °, ⁇ 20 °, ⁇ 30 °, deviates from the parallelism.
- the parasitic element 106 includes an angled toward the rear wall 1 1 or bent portion P2, which is preferably parallel to
- Rear wall 1 1 extends, and is formed so that the portion P1 is angled to it, i. that sections P1 and P2 form an angle WP to each other.
- This angle WP is preferably between 100 ° and 150 °.
- FIG. 3 shows a rear view of a group antenna, comprising two subgroups 100a, 100b, each consisting of at least two slot antennas 100 as before are formed and longitudinally strung together, where longitudinal means that the subgroups 100a, 100b respectively with the areas where the
- Connecting points 121, 122 are connected to each other.
- a housing inner conductor 400 which consists of a different electrically conductive material than the housing, e.g. Aluminum or silver-plated brass or copper or silver-plated or tinned copper may consist, via one inner conductor 200, the feed points 101 of two longitudinally juxtaposed
- the inner conductor of a connector 300 is located midway between the feed points 101 of the slot antennas 100 or at a predetermined offset V1 midway between the feed points 101 of FIG
- the offset V1 is less than 5%, 10% or 20% of the length of Power cable 500 is.
- the two feed cables 500 which are in the form of coaxial cables, respectively run through the clearances for the cabling 102 of the slot antennas 100 and open onto a distribution 600, from which the array antenna is fed via a coaxial input 700.
- the connector 300 between the inner conductor 400 and the cable 500 may also be designed as a solid connection.
- Figure 6a shows a 3D view of a slot antenna 100 according to an embodiment of the present invention
- Figure 6b shows an enlarged 3D view of a
- the feed element 12 of the slot antenna 100 may be embodied as a conductive layer on a support such as a circuit board.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017107901.7A DE102017107901A1 (de) | 2016-09-08 | 2017-04-12 | Breitbandige rückseitig abgedeckte Schlitzantenne und Antennengruppen damit |
PCT/DE2018/100292 WO2018188687A1 (de) | 2017-04-12 | 2018-04-02 | Breitbandige rückseitig abgedeckte schlitzantenne und antennengruppen damit |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3610537A1 true EP3610537A1 (de) | 2020-02-19 |
Family
ID=62025645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18718677.0A Withdrawn EP3610537A1 (de) | 2017-04-12 | 2018-04-02 | Breitbandige rückseitig abgedeckte schlitzantenne und antennengruppen damit |
Country Status (6)
Country | Link |
---|---|
US (1) | US11031698B2 (de) |
EP (1) | EP3610537A1 (de) |
CN (1) | CN110679035A (de) |
AU (1) | AU2018251008A1 (de) |
DE (1) | DE102017107901A1 (de) |
WO (1) | WO2018188687A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017107901A1 (de) | 2016-09-08 | 2018-03-08 | Kathrein-Werke Kg | Breitbandige rückseitig abgedeckte Schlitzantenne und Antennengruppen damit |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4101900A (en) | 1977-02-28 | 1978-07-18 | The United States Of America As Represented By The Secretary Of The Navy | Modified t-bar fed slot antenna |
US4132995A (en) * | 1977-10-31 | 1979-01-02 | Raytheon Company | Cavity backed slot antenna |
US6150988A (en) | 1999-04-16 | 2000-11-21 | Tci International, Inc. | Wideband slot antenna with low VSWR |
US6756949B2 (en) | 2002-09-24 | 2004-06-29 | Spx Corporation | Wideband cavity-backed antenna |
US8599089B2 (en) * | 2010-03-30 | 2013-12-03 | Apple Inc. | Cavity-backed slot antenna with near-field-coupled parasitic slot |
US9270028B2 (en) * | 2011-08-26 | 2016-02-23 | Bae Systems Information And Electronic Systems Integration Inc. | Multi-arm conformal slot antenna |
DE102014011514A1 (de) * | 2014-07-31 | 2016-02-04 | Kathrein-Werke Kg | Kapazitiv geschmiertes Gehäuse, insbesondere kapazitiv geschmiertes Komponenten-Gehäuse für eine Antenneneinrichtung |
DE102017107901A1 (de) | 2016-09-08 | 2018-03-08 | Kathrein-Werke Kg | Breitbandige rückseitig abgedeckte Schlitzantenne und Antennengruppen damit |
-
2017
- 2017-04-12 DE DE102017107901.7A patent/DE102017107901A1/de not_active Ceased
-
2018
- 2018-04-02 WO PCT/DE2018/100292 patent/WO2018188687A1/de unknown
- 2018-04-02 AU AU2018251008A patent/AU2018251008A1/en not_active Abandoned
- 2018-04-02 EP EP18718677.0A patent/EP3610537A1/de not_active Withdrawn
- 2018-04-02 US US16/604,529 patent/US11031698B2/en active Active
- 2018-04-02 CN CN201880025082.1A patent/CN110679035A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US20200059001A1 (en) | 2020-02-20 |
DE102017107901A1 (de) | 2018-03-08 |
AU2018251008A1 (en) | 2019-10-10 |
WO2018188687A1 (de) | 2018-10-18 |
US11031698B2 (en) | 2021-06-08 |
CN110679035A (zh) | 2020-01-10 |
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Owner name: KATHREIN BROADCAST GMBH |
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