CN113078469A - Ku waveband double-frequency dual-polarized antenna for satellite communication - Google Patents
Ku waveband double-frequency dual-polarized antenna for satellite communication Download PDFInfo
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- CN113078469A CN113078469A CN202110381950.3A CN202110381950A CN113078469A CN 113078469 A CN113078469 A CN 113078469A CN 202110381950 A CN202110381950 A CN 202110381950A CN 113078469 A CN113078469 A CN 113078469A
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- 238000004891 communication Methods 0.000 title claims abstract description 29
- 230000008878 coupling Effects 0.000 claims abstract description 41
- 238000010168 coupling process Methods 0.000 claims abstract description 41
- 238000005859 coupling reaction Methods 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 40
- 230000010287 polarization Effects 0.000 claims abstract description 37
- 230000005855 radiation Effects 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 230000007123 defense Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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- 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
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Abstract
The invention discloses a Ku waveband double-frequency dual-polarized antenna for satellite communication, which comprises a radiating metal patch, a metal floor and a feed structure, wherein the metal floor is provided with coupling gaps in the vertical polarization direction and the horizontal polarization direction from top to bottom; the feed structure comprises a first feed patch and a second feed patch which are positioned below the coupling gap in the vertical polarization direction and the horizontal polarization direction respectively, and a first microstrip line and a second microstrip line, one ends of which are connected with the first feed patch and the second feed patch respectively, and the other ends of the first microstrip line and the second microstrip line are connected with a feed port in the vertical polarization direction and a feed port in the horizontal polarization direction respectively. The invention uses the T-shaped feed structure which is rotationally and symmetrically arranged, the working bandwidth of the antenna is expanded, the size of the coupling gap is reduced under the condition of not influencing the performance of the antenna, the backward radiation is reduced, the patch antenna unit and the gap coupling antenna unit have different central frequencies, and the central frequencies are very close to each other, thereby forming the double-resonance antenna.
Description
Technical Field
The invention relates to a Ku waveband double-frequency dual-polarized antenna for satellite communication, and belongs to the technical field of wireless communication.
Background
Since ancient times, the border defense line is used as a frontier position for resisting the invasion of external enemies and an important defense line for preventing the penetration and the damage of enemy potential, the border defense and control are enhanced, the border defense safety is consolidated, and the establishment of safety strategic shielding for the country is the key point of border defense work. With the development of modern communication technology and internet technology, the advantages of intellectualization and informatization are converted into frontier defense work, and the significance of constructing a quick-response and information linkage frontier defense system is great, so that the construction of a frontier defense frontier-oriented global coverage, high safety and quick access portable satellite communication system has important strategic significance. Compared with the Ku frequency band satellite portable station with the traditional parabolic antenna as the main part, the antenna designed by adopting the miniaturization panel antenna technology has small volume, light weight and easy processing.
Due to the advantage of the dual-polarized antenna (two mutually orthogonal linear polarizations) in resisting channel interference, the dual-polarized antenna is favored in many application occasions, and the broadband characteristic of realizing dual polarization in a Ku frequency band is also a research hotspot at present.
The patch antenna unit and the groove antenna unit have different central frequencies, and the central frequencies of the two antenna units are very close to each other, so that the working bandwidth of the antenna is greatly expanded, and a double-resonance antenna is formed.
Disclosure of Invention
The technical problem is as follows:
the invention aims to solve the problem that the prior art scheme is immature, provides a Ku waveband dual-frequency dual-polarized antenna which can be integrated in satellite communication equipment, has broadband characteristics in performance, can improve dual-polarized radiation, and has the advantages of low profile, light weight, easiness in integration, convenience in conformal and the like in structure; in particular, when multiple antennas are used in a satellite communication terminal, the terminal radiation signal is covered over a hemisphere.
The technical scheme is as follows:
in order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a Ku wave band dual-frenquency dual-polarized antenna for satellite communication, top-down includes radiation metal paster, vertical polarization direction and horizontal polarization direction open the metal floor that has the coupling gap respectively, feed structure, and the metal paster is by the metal floor coupling feed that opens the coupling gap, and the metal floor is by the feed structure coupling feed, feed structure is including being located the first feed paster and the second feed paster of the coupling gap below vertical polarization direction and horizontal polarization direction respectively to and one end respectively with first feed paster and second feed paster connection's first microstrip line and second microstrip line, the other end of first microstrip line and second microstrip line connects feed port on the vertical polarization direction and the feed port on the horizontal polarization direction respectively.
Furthermore, the Ku-band dual-frequency dual-polarized antenna comprises a microstrip patch antenna unit and two slot coupling antenna units, wherein the microstrip patch antenna unit is fed in a space coupling manner, the radiation of the microstrip patch antenna unit is formed by the radiation metal patch, and the radiation of the slot coupling antenna unit is formed by a coupling slot on the metal bottom plate; the microstrip patch antenna unit and the slot coupling antenna unit respectively have a central frequency, and the two antenna units are excited simultaneously to generate double frequency points to form a resonant antenna.
Furthermore, the center frequencies of the microstrip patch antenna unit and the slot coupling antenna unit are respectively 12.2-12.7ghz and 13.8-14.3 ghz.
Furthermore, the first microstrip line and the first feed patch form a first T-shaped feed structure, the second microstrip line and the second feed patch form a second T-shaped feed structure, and the first T-shaped feed structure and the second T-shaped feed structure form 90-degree rotational symmetry with a vertical central axis of the radiation metal patch.
Further, the radiating metal patch is square and has a side length of 6.0041 mm.
Furthermore, the coupling slot is dumbbell-shaped and comprises a main body part and two squares, the length of the main body part is 2.8626mm, the width of the main body part is 0.5777mm, and the side length of each square is 1.0874 mm.
Further, the distances from the centers of the coupling slits to the edges of the antenna are 2.7406mm and 6.0413mm, respectively.
The upper side, the left side and the right side of the satellite communication equipment are respectively provided with the dual-frequency dual-polarized antenna. The satellite communication equipment can adopt KP-1 individual satellite communication equipment.
Has the advantages that:
the Ku waveband double-frequency dual-polarized antenna for satellite communication has the following characteristics:
1) has dual polarization characteristics. The dual-port feed slot coupling antenna has vertical polarization characteristics and horizontal polarization characteristics. The dual-polarized antenna has strong channel interference resistance while increasing the receiving and transmitting isolation, and the broadband characteristic of realizing dual polarization in a Ku frequency band is also a research hotspot at present.
2) Has broadband characteristics. The T-shaped feed structure, namely the microstrip transmission line and the feed patch, which are arranged in rotational symmetry is innovatively used, so that the working bandwidth of the antenna is greatly expanded, the size of a coupling gap is reduced under the condition of not influencing the performance of the antenna, backward radiation is reduced, the patch antenna unit and the gap coupling antenna unit have different central frequencies, and a double-resonance antenna is formed because the central frequencies of the two antenna units are very close.
3) The wide beam width is formed on one main surface, so that large-angle coverage of signals is easy to realize; furthermore, the invention has the characteristics of low profile, easy integration and wide beam coverage, and three pairs of antennas are respectively arranged on the left side, the right side and the upper side of the equipment, so that the requirement of the terminal equipment for covering three-dimensional space signals exceeding a hemisphere can be met, wherein the main space region meets the dual-polarization characteristic.
4) The antenna has the advantages of simple structure and easy processing, and because the antenna is manufactured on the dielectric substrate and the PCB technology is used, the antenna has low profile and light weight, is beneficial to mass production and is easy to integrate in satellite communication equipment.
Drawings
Fig. 1 is a top view of a dual-band dual-polarized antenna of the present invention;
fig. 2 is a front view of the dual-band dual-polarized antenna of the present invention;
in the figure, 1 is a square radiation metal patch; 2 is a first dielectric plate; 3 is a first adhesive sheet; 4 is a first coupling gap; 5 is a second coupling gap; 6 is a first metal floor with coupling gaps; 7 is a second dielectric plate; 8 is a first microstrip line; 9 is a first feed patch; 10 is a second microstrip line; 11 is a second feeding patch; 12 is a second adhesive plate, 13 is a third medium plate, and 14 is a second metal floor;
FIG. 3 is a schematic view of the patch antenna radiation structure of the present invention;
FIG. 4 is a schematic diagram of the radiation structure of the slot-coupled antenna of the present invention;
FIG. 5 is a schematic diagram of the copper-clad area of the feeding layer of the dual-frequency dual-polarized antenna of the present invention;
fig. 6 shows the result of S-parameter design of the dual-band dual-polarized antenna of the present invention;
FIG. 7 is a design pattern E in-plane result of the dual-band dual-polarized antenna of the present invention providing vertical polarization (E v-pol) and horizontal polarization (E h-pol);
fig. 8 is a design pattern H in-plane result of the dual-band dual-polarized antenna of the present invention providing vertical polarization (H v-pol) and horizontal polarization (H H-pol).
Detailed Description
The invention is further elucidated with reference to the drawing.
As shown in fig. 1 and 2, the invention is a Ku-band dual-frequency dual-polarized antenna, which comprises a square radiation metal patch 1, a first dielectric plate 2, a first adhesive plate 3, a first metal floor 6, a second dielectric plate 7, a second adhesive plate 12, a feed structure, a third dielectric plate 13 and a second metal floor 14, wherein coupling gaps are respectively formed in the vertical polarization direction and the horizontal polarization direction from top to bottom. The feed structure comprises a first feed patch 9 and a second feed patch 11 which are positioned below the coupling gap in the vertical polarization direction and the horizontal polarization direction respectively, and a first microstrip line 8 and a second microstrip line 10 of which one ends are connected with the first feed patch 9 and the second feed patch 11 respectively, wherein the other ends of the first microstrip line 8 and the second microstrip line 10 are connected with a feed port in the vertical polarization direction and a feed port in the horizontal polarization direction respectively. The first microstrip line 8 and the second microstrip line 10 are 50-ohm microstrip lines.
When the antenna is applied to Ku band communication of satellite communication equipment, three pairs of antennas are arranged on the upper side surface, the left side surface and the right side surface of the terminal equipment and are respectively used for realizing signal coverage in the upper direction, the left direction and the right direction of the terminal equipment. By means of the alternate use of the vertical polarization antenna units and the horizontal polarization antenna units, the three-dimensional space signal coverage requirement of the terminal equipment exceeding a hemisphere can be achieved, and the dual-polarization characteristic is provided.
Fig. 3 shows a microstrip patch antenna unit, the radiation of which is formed by a square radiation metal patch 1, the square radiation metal patch 1 is coupled and fed through the first metal floor 6 of the lower layer, the square radiation metal patch 1 is arranged at the center of the antenna, and the side length is 6.0041 mm. The first dielectric sheet 2 was made of Rogers RT/duroid 5880(tm) and had a thickness of 1.1684 mm. A first adhesive plate 3 is arranged on the lower surface of the first dielectric plate 2, the material of the adhesive plate is R3001, the thickness of the adhesive plate is 0.23mm, and the first adhesive plate 3 fixes the first dielectric plate 2 and the first metal floor 6 together. The thickness of the first metal floor 6 is 0.0414 mm. The body portion of the dumbbell-shaped coupling slot was 2.8626mm long, 0.5777mm wide, and 1.0874mm long on a square side. The distances from the center of the coupling slot to the edge of the antenna are 2.7406mm and 6.0413mm respectively.
Fig. 4 shows a slot-coupled antenna element, the radiation of which is formed by two dumbbell-shaped coupling slots on the first metal floor 6. The first metal floor 6 covers the upper surface of the second dielectric layer 7, the dielectric plate material of the second dielectric layer 7 is Rogers RT/duroid 5880(tm), the thickness is 0.2921mm, the feed structure of the slot coupling antenna is located on the lower surface of the second dielectric plate 7, the width of each of the two microstrip lines is 0.7341mm, the length of each microstrip line is 4.1303mm, one end of each microstrip line is connected with a feed port, the other end of each microstrip line is connected with a feed patch, the width of each feed patch is 2.145mm, the length of each feed patch is 3.2937mm, and the distance between the centers of the microstrip lines and the edge of the antenna close to the.
Two microstrip lines and the vertical central axis of the radiation metal patch form 90-degree rotational symmetry. The second dielectric plate 7 is fixed with the third dielectric plate 13 through the second adhesive plate 12, the material of the second adhesive plate 12 is R3001, the thickness is 0.23mm, the material of the third dielectric plate 13 is Rogers RT/duroid 5880(tm), and the thickness is 1.1684 mm. The lower surface of the third dielectric plate is covered with a second metal floor 14.
The signal transmitted in the first microstrip line 8 is coupled into the first coupling slot 4 through the first feed patch 9. The signal transmitted in the second microstrip line 10 is coupled into the second coupling slot 5 through the second feeding patch 11. In the first metal floor 6, two dumbbell-shaped hollowed areas with projected areas are arranged at the position of the feed metal patch to serve as a slot coupling antenna unit.
When dual-polarized radiation is formed using the vertically polarized antenna elements and the horizontally polarized antenna elements, excitation is performed separately by respective microstrip lines.
Fig. 6 shows that the bandwidth range of the antenna S11 less than-10 dB is 11.63GHz to 14.74GHz, the relative bandwidth is 23.59%, the antenna covers the range of 12GHz to 14GHz of the satellite communication frequency band, and the central frequency points are 12.4GHz and 14 GHz. Fig. 7 shows the antenna vertical polarization and horizontal polarization E-plane directional patterns, and fig. 8 shows the antenna vertical polarization and horizontal polarization H-plane directional patterns. It can be seen that the antenna of the present invention can provide a radiation pattern with broadband characteristics and dual polarization characteristics.
By means of the wide beam characteristic of the antenna directional diagram on one main surface, the requirement of three-dimensional space signal coverage of satellite communication equipment exceeding a hemisphere can be met, and the antenna directional diagram is portable.
Claims (10)
1. The Ku waveband dual-frequency dual-polarized antenna for satellite communication comprises a radiating metal patch, a metal floor and a feed structure, wherein the metal floor is provided with a coupling gap in the vertical polarization direction and the horizontal polarization direction from top to bottom, the radiating metal patch is fed by the metal floor provided with the coupling gap in a coupling manner, and the metal floor is fed by the feed structure in a coupling manner.
2. The Ku-band dual-frequency dual-polarized antenna for satellite communication according to claim 1, comprising a microstrip patch antenna unit and two slot-coupled antenna units, the microstrip patch antenna unit being spatially coupled and fed, the radiation of the microstrip patch antenna unit being formed by the radiating metal patch, and the slot-coupled antenna unit being formed by a coupling slot on the metal bottom plate; the antenna is characterized in that the microstrip patch antenna unit and the slot coupling antenna unit respectively have a central frequency, and the two antenna units are excited simultaneously to generate double frequency points to form a resonant antenna.
3. The Ku-band dual-frequency dual-polarized antenna for satellite communication according to claim 2, wherein the center frequencies of the microstrip patch antenna elements and the slot coupling antenna elements are 12.2-12.7ghz and 13.8-14.3ghz, respectively.
4. The Ku-band dual-frequency dual-polarized antenna for satellite communication according to claim 1, wherein the first microstrip line and the first feed patch form a first T-shaped feed structure, the second microstrip line and the second feed patch form a second T-shaped feed structure, and the first T-shaped feed structure and the second T-shaped feed structure are rotationally symmetric at 90 ° with respect to a vertical central axis of the radiating metal patch.
5. The Ku-band dual-frequency dual-polarized antenna for satellite communication according to claim 1, wherein the radiating metal patch is square and has a side length of 6.0041 mm.
6. The Ku-band dual-frequency dual-polarized antenna for satellite communication according to claim 1, wherein the coupling slot is dumbbell-shaped and comprises a main body part and two squares, the main body part is 2.8626mm long and 0.5777mm wide, and the sides of the squares are 1.0874mm long.
7. The Ku-band dual-frequency dual-polarized antenna for satellite communication according to claim 6, wherein the distances from the center of the coupling slot to the edge of the antenna are 2.7406mm and 6.0413mm, respectively.
8. The Ku-band dual-frequency dual-polarized antenna for satellite communication according to claim 1, wherein the first microstrip line and the second microstrip line have a width of 0.7341mm and a length of 4.1303mm, and the centers of the first microstrip line and the second microstrip line are 2.1969mm away from the edge of the antenna at the closer distance.
9. The Ku-band dual-polarized antenna for satellite communications according to claim 1, wherein the first and second feed patches are 2.145mm wide and 3.2937mm long.
10. A satellite communication apparatus using the dual-frequency dual-polarized antenna of claim 1, wherein the dual-frequency dual-polarized antenna is mounted on an upper side, a left side, and a right side thereof, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110381950.3A CN113078469A (en) | 2021-04-09 | 2021-04-09 | Ku waveband double-frequency dual-polarized antenna for satellite communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110381950.3A CN113078469A (en) | 2021-04-09 | 2021-04-09 | Ku waveband double-frequency dual-polarized antenna for satellite communication |
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| CN113078469A true CN113078469A (en) | 2021-07-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069231A (en) * | 2021-11-26 | 2022-02-18 | 北京华镁钛科技有限公司 | Planar lens antenna |
| CN115101931A (en) * | 2022-07-25 | 2022-09-23 | 南京隼眼电子科技有限公司 | Antenna and radar device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103906A (en) * | 2014-08-01 | 2014-10-15 | 东南大学 | Low-cost microwave- and millimeter-wave polarized antenna of multi-layer PCB (Printed circuit board) process |
| WO2015089823A1 (en) * | 2013-12-20 | 2015-06-25 | 华为技术有限公司 | Tri-polarization antenna |
| CN110061353A (en) * | 2019-04-22 | 2019-07-26 | 东南大学 | A kind of miniaturization Ku full frequency band satellite antenna arrays |
-
2021
- 2021-04-09 CN CN202110381950.3A patent/CN113078469A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015089823A1 (en) * | 2013-12-20 | 2015-06-25 | 华为技术有限公司 | Tri-polarization antenna |
| CN104103906A (en) * | 2014-08-01 | 2014-10-15 | 东南大学 | Low-cost microwave- and millimeter-wave polarized antenna of multi-layer PCB (Printed circuit board) process |
| CN110061353A (en) * | 2019-04-22 | 2019-07-26 | 东南大学 | A kind of miniaturization Ku full frequency band satellite antenna arrays |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114069231A (en) * | 2021-11-26 | 2022-02-18 | 北京华镁钛科技有限公司 | Planar lens antenna |
| CN115101931A (en) * | 2022-07-25 | 2022-09-23 | 南京隼眼电子科技有限公司 | Antenna and radar device |
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