CN116581531A - Wide-beam dual-polarized dielectric resonator antenna - Google Patents
Wide-beam dual-polarized dielectric resonator antenna Download PDFInfo
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- CN116581531A CN116581531A CN202310624254.XA CN202310624254A CN116581531A CN 116581531 A CN116581531 A CN 116581531A CN 202310624254 A CN202310624254 A CN 202310624254A CN 116581531 A CN116581531 A CN 116581531A
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- 239000002184 metal Substances 0.000 claims abstract description 88
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 230000009977 dual effect Effects 0.000 claims description 14
- 230000005855 radiation Effects 0.000 abstract description 12
- 230000005684 electric field Effects 0.000 abstract description 8
- 230000010287 polarization Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 7
- 230000010354 integration Effects 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005388 cross polarization Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a wide-beam dual-polarized dielectric resonator antenna, which is characterized in that a square metal patch with a metallized via hole is arranged at the near-vertex position of a square back cavity substrate integrated dielectric resonator, so that a non-radiation mode can be restrained, an electric field opposite to the resonator is provided, the E-plane beam width of the antenna is improved and expanded, and finally the wide-beam dielectric resonator antenna is obtained.
Description
Technical Field
The invention relates to an antenna, in particular to a wide-beam dual-polarized dielectric resonator antenna.
Background
In wireless applications, the half-power beamwidth of an antenna is of great interest as an important indicator. The wide beam antenna can obtain higher gain at a low elevation angle position due to a larger coverage area, and is suitable for the fields of satellite communication, intelligent traffic and the like. When applied as a phased array unit, the wide beam antenna can increase the scanning range, and is suitable for related applications requiring wide-angle scanning. In base station applications, a wide beam antenna is advantageous for reducing the number of sectors. Meanwhile, in the fields of satellite antennas, base station antennas, aperture synthetic radars and the like, the antennas acquire wider beams and simultaneously need dual polarization work to widen the system capacity. In a dual-polarized wide-beam antenna, a metal oscillator type antenna is commonly applied to a low-frequency microwave band, and when the antenna works at a high frequency, the radiation efficiency and the gain are reduced due to higher conductor loss; the conductor loss of the dielectric resonator type antenna is greatly reduced, the radiation efficiency is increased, and higher efficiency and gain can be ensured to be obtained when the dielectric resonator type antenna works at higher frequency. Therefore, the wide-beam dual-polarized dielectric resonator antenna has certain research significance and engineering value.
The current wide beam dielectric resonator antenna is mainly designed by bending a rectangular dielectric resonator, stacking a plurality of layers of cylindrical ceramic dielectric sheets, arranging comb-shaped metal structures or annular metal structures around or at two sides of the rectangular dielectric resonator at intervals, adopting an irregularly-shaped dielectric resonator to fuse multiple modes, embedding a short column structure or mushroom-shaped structure of splayed radiation in the rectangular dielectric resonator, adopting an irregularly-shaped rectangular dielectric resonator or adopting a cylindrical dielectric resonator loaded by a folded vertical metal plate, and the like. On the one hand, the design method does not consider the influence and treatment measures of the medium environment when the printed circuit board is realized; on the other hand, the substrate integration cannot be realized by utilizing the printed circuit board process due to the complex structure caused by the reasons of medium bending, irregular medium structure, loading of non-planar parasitic structure and the like, so that the integration level is low. Meanwhile, the antenna structure is in an asymmetric central symmetry mode, and can only realize a monopole working state, but cannot realize a dual-polarization working state.
Disclosure of Invention
The invention aims to: in view of the above prior art, a wide beam radiating dielectric resonator antenna with dual polarization and planar integration characteristics is proposed.
The technical scheme is as follows: the structure of the antenna is centrosymmetric, and the antenna sequentially comprises a top metal structure, an upper high dielectric constant substrate, a metal ground, a lower low dielectric constant substrate and a bottom metal structure from top to bottom;
the top layer metal structure consists of a square ring type metal structure and four square metal patches, wherein the four square metal patches are respectively positioned at four inner side vertexes of the square ring type metal structure and are provided with gaps with the square ring type metal structure; a circle of metallized through holes are formed in the edge of the inner side of the square ring-shaped metal structure, a pair of metallized through hole pairs are formed in each square metal patch, and the circle of metallized through holes and the pair of metallized through holes are connected with the top-layer metal structure and the metal ground;
four rectangular grooves which are symmetrical about the center and are arranged in a square shape are formed in the metal ground; the bottom metal structure is formed by four metal strap wires which are arranged in a cross manner and are respectively and correspondingly positioned under the rectangular grooves.
Further, on each square metal patch, the metallized via holes are respectively positioned at the edges of the non-adjacent two sides of the square metal patch and the square ring-shaped metal structure, and the four pairs of metallized via holes are symmetrical about the center of the antenna.
Further, the four square metal patches have a side length of 0.13λ 0 ～0.16λ 0 The gap between the edge and the inner side of the square ring type metal structure is 0.01lambda 0 ～0.02λ 0 Between them.
The beneficial effects are that: the existing wide-beam dielectric resonator antenna cannot realize substrate integration due to the fact that the influence and processing measures of the dielectric environment when the printed circuit board is realized are not considered, the antenna structure is complex and the like; meanwhile, due to the non-centrosymmetric structure, dual polarization cannot be realized. Aiming at the defects of the prior art, the structure and the method adopted by the wide beam dielectric resonator antenna can realize substrate integration by using a printed circuit board process, thereby reducing installation errors and improving the yield, and solving the problems that the existing similar design cannot realize dual polarization work and cannot realize beam broadening on both polarizations in performance.
Specifically, the square metal patch with the metallized via hole is arranged at the near-top position of the square back cavity substrate integrated dielectric resonator, so that a non-radiation mode can be restrained, an electric field opposite to the resonator is provided, the E-plane beam width of the antenna is improved and expanded, and finally the wide-beam dielectric resonator antenna is obtained.
The side length of the four square metal patches is 0.13 lambda 0 ～0.16λ 0 The edge of the dielectric resonator is provided with gaps with the inner side edge of the square annular metal structure, the metal via holes are positioned at the edges of the non-adjacent two sides of the square metal patch and the square annular metal structure, and the square metal patch is combined with the metal via holes, so that on one hand, the suppression of the dielectric resonator can be realizedAnd on the other hand, an electric field which is opposite to that in the dielectric resonator is generated in the gap, so that the beam width of the radiation of the two polarized E surfaces is effectively widened.
A pair of vertical rectangular grooves and a pair of horizontal rectangular grooves are symmetrically distributed on the metal ground at the center, and the electric length is 0.15 lambda 0 ～0.17λ 0 Between at a distance of 0.22 lambda 0 ～0.26λ 0 When the microstrip line is excited by the differential excitation of the corresponding microstrip line, a homodromous electric field is formed, and a resonance point supporting side-to-side radiation can be provided under the action of the dielectric resonator for widening the working bandwidth.
The pair of horizontal microstrip feeder lines and the pair of vertical microstrip feeder lines can respectively excite the vertical rectangular grooves and the horizontal rectangular grooves in a differential mode to form a dual-polarized differential feed structure, and the antenna can obtain higher port isolation and lower cross polarization level by combining the excited orthogonal modes of the dielectric resonator.
A circle of metallized through holes are arranged on the inner side of the square ring type metal structure to form an equivalent metal back cavity structure, the equivalent metal back cavity structure is used for isolating the inner and outer structures of the dielectric resonator, the influence of the outer structure on the working characteristics of the inner main body part in the substrate integrated environment is avoided, and meanwhile, the gain can be improved to a certain extent.
Drawings
Fig. 1 is a schematic cross-sectional structure of a wide-beam dual-polarized dielectric resonator antenna according to the present invention;
fig. 2 is a schematic top view of the wide beam dual polarized dielectric resonator antenna of the present invention;
FIG. 3 is a schematic diagram of an interlayer metal structure of a wide beam dual polarized dielectric resonator antenna of the present invention;
fig. 4 is a schematic diagram of the bottom metal structure of the wide beam dual polarized dielectric resonator antenna of the present invention;
FIG. 5 is a simulation result of matching and isolation of the wide beam dual polarized dielectric resonator antenna of the present invention;
FIG. 6 is a simulated gain of a wide beam dual polarized dielectric resonator antenna of the present invention;
FIG. 7 is an E-plane half-power beamwidth of the wide-beam dual-polarized dielectric resonator antenna of the present invention;
FIG. 8 is a simulated pattern at 18.8GHz when the wide-beam dual-polarized dielectric resonator antenna of the present invention is operating with horizontal polarization;
FIG. 9 is a simulated pattern at 19.6GHz when the wide-beam dual-polarized dielectric resonator antenna of the present invention is operating with horizontal polarization;
fig. 10 is a simulated pattern at 20.4GHz for a wide beam dual polarized dielectric resonator antenna of the present invention operating with horizontal polarization.
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in fig. 1 to 4, a wide beam dual polarized dielectric resonator antenna has a central symmetry, and is composed of a top metal structure 1, an upper high dielectric constant substrate 2, a metal ground 3, a lower low dielectric constant substrate 4, a bottom metal structure 5, and a circle of metallized vias 6 and four pairs of metallized via pairs 7 connecting the top metal structure 1 and the metal ground 3.
The top metal structure 1 is composed of a square ring-shaped metal structure 11 and four square metal patches 12, and the side length of an opening at the inner side of the square ring-shaped metal structure 11 is 0.62lambda 0 ～0.68λ 0 Between lambda 0 For the free space wavelength corresponding to the center frequency, the side length of the four square metal patches 12 is 0.13λ 0 ～0.16λ 0 Are respectively positioned at four inner side vertexes of the square ring type metal structure 11, and the edge distance between the patch and the square ring type metal structure 11 is 0.01lambda 0 ～0.02λ 0 Between them. The metallized vias 6 are arranged at the inner edge of the square ring metal structure 11 dividing the upper high dielectric constant substrate 2 into an inner dielectric radiator portion 21 and an outer dielectric structure 22. Each pair of metallized via holes 7 has two metallized via holes, which are respectively positioned at the edges of the non-adjacent two sides of the square metal patch 12 and the square ring-shaped metal structure 11, and four pairs of metallized via holes 7 are symmetrical about the center of the antenna.
Four lines with a length of 0.15 lambda are etched on the metal ground 3 0 ～0.17λ 0 Rectangular grooves 31-34 therebetween, two vertical rectangular grooves 31, 32 and two parallel rectangular grooves 33, 34 are symmetrical about the center and spaced at a distance of 0.22λ 0 ～0.26λ 0 Between them. The bottom metal structure 5 is four strips with the length of 0.38lambda 0 ～0.41λ 0 The metal strips 51 to 54 are all positioned right below the corresponding rectangular grooves and are respectively orthogonal with the corresponding rectangular grooves.
The top metal structure 1, the upper high dielectric constant substrate 2, the metal ground 3, a circle of metallized via holes 6 and four pairs of metallized via hole pairs 6 and 7 form a square back cavity substrate integrated dielectric resonator which is used as a radiator part of an antenna. The bottom metal structure 5, the lower low dielectric constant substrate 4 and the metal ground 3 form a pair of horizontal microstrip feeder lines and a pair of vertical microstrip feeder lines, which correspond to the two pairs of differential ports respectively.
For the wide-beam dual-polarized dielectric resonator antenna, when the antenna works, signals are coupled to corresponding rectangular slots through microstrip differential feeder pairs, and wide-beam dual-polarized side-emission radiation is formed under the action of the square back cavity substrate integrated dielectric resonator.
In the process, taking horizontal polarization as an example, two vertical rectangular grooves are fed by a horizontal differential microstrip to present a same-direction horizontal electric field, so that side-emission type horizontal polarization radiation can be supported, and the same-direction horizontal electric field can excite a square back cavity substrate integrated dielectric resonatorA mode that also supports side-fire horizontally polarized radiation. On the one hand, the four square metal patches positioned at the peak positions of the resonator can effectively inhibit +.>A mode such that the vertical slot is +.>The modes form a horizontally polarized working frequency band; on the other hand, the four square metal patches are combined with a pair of metallized through holes at the respective edges, so that an electric field which is opposite to the inside of the dielectric resonator can be generated at the gap between the square metal patches and the inner side of the square ring-shaped metal structure, and the opposite electric field is displayed in the whole working frequency band, so that the beam width of the horizontal polarized E-plane radiation can be effectively widened in the whole working frequency band; and each pair of metallized through holes is arranged at the near-center position of the edges of the two sides of the square metal patch facing the center of the whole antenna, which is favorable for improving the strength of the reverse field, so that the wave beam width in the whole working frequency band is improved to be more than 100 degrees.
The antenna is of a central symmetry structure, the working principle in vertical polarization is the same as that in horizontal polarization, only the directions are orthogonal, and the E-plane beam width of the vertical polarization radiation in the whole working frequency band can be improved to more than 100 degrees. In addition, the dual polarized differential feed formed by combining the pair of horizontal microstrip feed lines and the pair of vertical microstrip feed lines with four centrally symmetrical rectangular grooves is combined with the orthogonal mode excited by the dielectric resonator, so that the antenna can obtain higher port isolation and lower cross polarization level.
Structurally, the antenna is centrosymmetric and plane-integratable, and can be realized by adopting a printed circuit board process, so that assembly errors can be reduced, and yield and reliability can be improved.
An embodiment of the present invention is shown below, and schematic antenna structures thereof are shown in fig. 1 to 4. The embodiment adopts the combination of the RT6010 substrate and the RO4003C substrate, and the size of the whole antenna unit is 0.9lambda 0 ×0.9λ 0 ×0.07λ 0 . As shown in FIG. 5, the simulation results of the matching and isolation response of the embodiment show that the working frequency band of the antenna covers 18.5 GHz-20.9 GHz, the relative bandwidth is 12.2%, and the differential mode isolation between ports in the working frequency band is good. The simulation gain for this embodiment is shown in fig. 6 with a maximum gain of 5.9dBi in the operating band. The simulated E-plane half power beamwidth is shown in fig. 7, with half power beamwidths in the operating band between 100 deg. and 141 deg.. Fig. 8 to 10 are respectively simulation patterns at 18.8GHz, 19.6GHz and 20.4GHz when the antenna is horizontally polarized, the half-power beam width of the E plane is 124.5 °, 102.4 ° and 105.9 °, the half-power beam width of the H plane is 82.9 °, 77.6 ° and 71.9 °, and cross polarized water is good. Due to the symmetry of the antenna structure and pattern, the antenna vertical polarization performance corresponds to the horizontal polarization performance.
Compared with the prior art, the wide-beam dielectric resonator antenna provided by the invention has the structural advantages of simple structure, planarization realization, processing of a printed circuit board process, integration of a substrate and the like, and the performance advantages of dual polarization operation, beam broadening of both polarizations and the like.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (3)
1. The wide-beam dual-polarized dielectric resonator antenna is characterized in that the antenna has a central symmetry structure and sequentially comprises a top metal structure (1), an upper high-dielectric-constant substrate (2), a metal ground (3), a lower low-dielectric-constant substrate (4) and a bottom metal structure (5) from top to bottom;
the top metal structure (1) is composed of a square annular metal structure (11) and four square metal patches (12), wherein the four square metal patches (12) are respectively positioned at four inner side vertexes of the square annular metal structure (11) and are provided with gaps with the square annular metal structure (11); a circle of metallized through holes (6) are arranged on the square ring-shaped metal structure (11) along the inner side edge, a pair of metallized through hole pairs (7) are arranged on each square metal patch (12), and the circle of metallized through holes (6) and the metallized through hole pairs (7) are connected with the top metal structure (1) and the metal ground (3);
four rectangular grooves (31-34) which are symmetrical about the center and are arranged in a square shape are arranged on the metal ground (3); the bottom metal structure (5) is formed by four metal strips (51-54) which are arranged in a cross manner and are respectively and correspondingly positioned under the rectangular grooves.
2. The wide-beam dual-polarized dielectric resonator antenna according to claim 1, characterized in that on each square metal patch (12), the pairs of metallized vias (7) are located at the edges of the square metal patch (12) and the non-adjacent sides of the square-ring metal structure (11), respectively, and four pairs of metallized via pairs (7) are symmetrical about the antenna center.
3. A wide beam dual polarized dielectric resonator antenna according to claim 1 or 2, characterized in that the four square metal patches (12) have a side length of 0.13 λ 0 ～0.16λ 0 The gap between the edge and the inner side of the square ring type metal structure (11) is 0.01lambda 0 ～0.02λ 0 Between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310624254.XA CN116581531A (en) | 2023-05-30 | 2023-05-30 | Wide-beam dual-polarized dielectric resonator antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310624254.XA CN116581531A (en) | 2023-05-30 | 2023-05-30 | Wide-beam dual-polarized dielectric resonator antenna |
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| CN116581531A true CN116581531A (en) | 2023-08-11 |
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| CN202310624254.XA Pending CN116581531A (en) | 2023-05-30 | 2023-05-30 | Wide-beam dual-polarized dielectric resonator antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759796A (en) * | 2023-08-18 | 2023-09-15 | 南通至晟微电子技术有限公司 | Broadband dual-beam dielectric resonator antenna |
| CN116885440A (en) * | 2023-09-08 | 2023-10-13 | 南通至晟微电子技术有限公司 | Substrate integrated wide wave beam antenna |
| CN117013249A (en) * | 2023-09-06 | 2023-11-07 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
-
2023
- 2023-05-30 CN CN202310624254.XA patent/CN116581531A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759796A (en) * | 2023-08-18 | 2023-09-15 | 南通至晟微电子技术有限公司 | Broadband dual-beam dielectric resonator antenna |
| CN116759796B (en) * | 2023-08-18 | 2023-11-07 | 南通至晟微电子技术有限公司 | Broadband dual-beam dielectric resonator antenna |
| CN117013249A (en) * | 2023-09-06 | 2023-11-07 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
| CN117013249B (en) * | 2023-09-06 | 2024-04-05 | 南通大学 | Low elevation angle double-frequency dual-beam patch antenna |
| CN116885440A (en) * | 2023-09-08 | 2023-10-13 | 南通至晟微电子技术有限公司 | Substrate integrated wide wave beam antenna |
| CN116885440B (en) * | 2023-09-08 | 2024-01-09 | 南通至晟微电子技术有限公司 | Substrate integrated wide wave beam antenna |
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