CN108666734B - Dual-frequency shared antenna - Google Patents
Dual-frequency shared antenna Download PDFInfo
- Publication number
- CN108666734B CN108666734B CN201810606153.9A CN201810606153A CN108666734B CN 108666734 B CN108666734 B CN 108666734B CN 201810606153 A CN201810606153 A CN 201810606153A CN 108666734 B CN108666734 B CN 108666734B
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- frequency
- antenna
- low
- medium
- supporting medium
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- 239000000758 substrate Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 10
- 238000010295 mobile communication Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Classifications
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- 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
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- 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
- 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
- H01Q19/10—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 reflecting surfaces
- H01Q19/18—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 reflecting surfaces having two or more spaced reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a dual-frequency common antenna, which comprises a first supporting medium, wherein the top of the first supporting medium is in a T-shaped concave shape, and the lower part of the first supporting medium is in a hollow round platform structure, and the bottom of the first supporting medium is provided with a second supporting medium; a high-frequency medium substrate is arranged in the T-shaped transverse recess of the first supporting medium, a high-frequency antenna is etched on the front surface of the high-frequency medium substrate, a matching circuit is etched on the back surface of the high-frequency medium substrate, and a high-frequency reflecting plate is arranged in the T-shaped longitudinal recess of the first supporting medium; the side surface of the first supporting medium is provided with a low-frequency medium substrate in a surrounding mode, and the front surface of the low-frequency medium substrate is etched with a low-frequency antenna; the lower part of the second supporting medium is fixed with a low-frequency reflecting plate through a supporting rod, and a plurality of foldable reflecting arms are uniformly distributed on the edge of the low-frequency reflecting plate. The invention has the advantages of wide frequency band, small volume, light weight, low cost and simple and convenient operation.
Description
Technical Field
The invention relates to a communication antenna, in particular to a dual-frequency shared antenna.
Background
The role and role of satellite communications in modern war is continually increasing. The UHF frequency band signal has the advantages of small free space loss, strong capability of penetrating through a thick cloud layer and a concrete building, capability of overcoming the influence of severe weather and leaf shielding and the like, and is very suitable for mobile fighters to realize 'communication in motion', thereby becoming the working frequency band of a tactical satellite communication system. The S frequency band communication system can form a satellite cellular network similar to a ground mobile communication system by improving the effective load of a satellite and adopting a large-scale satellite-borne antenna and spot beam technology, so that a user can carry out mobile communication through a handheld terminal and is not limited by a communication area and weather conditions; the communication capability of the individual tactical combat unit can be greatly improved in military, and the emergency communication method can be a reliable emergency communication method.
Piggyback stations are an important application form of UHF and S band satellite communication systems. At present, due to the restriction of installation condition volume and weight, the traditional single-frequency-band portable satellite antenna has a relatively narrow working frequency band, and the relative bandwidth is generally within 10%; in order to realize dual-frequency sharing, a method of covering a plurality of frequency bands by adopting a plurality of antennae is needed, so that the cost and the weight of equipment are increased, different antennae are needed to be selected according to the change of the working frequency in the use process, and the operation is very inconvenient.
Disclosure of Invention
The invention aims to: the invention aims to overcome the defects of the prior art and provide the double-frequency common antenna which has the advantages of wide frequency band, small volume, light weight, low cost and simple and convenient operation.
The technical scheme is as follows: the dual-frequency common antenna comprises a first supporting medium, wherein the top of the first supporting medium is in a T-shaped concave shape, and the lower part of the first supporting medium is in a hollow round platform structure, and a second supporting medium is arranged at the bottom of the first supporting medium; a high-frequency medium substrate is arranged in the T-shaped transverse recess of the first supporting medium, a high-frequency antenna is etched on the front surface of the high-frequency medium substrate, a matching circuit is etched on the back surface of the high-frequency medium substrate, and a high-frequency reflecting plate is arranged in the T-shaped longitudinal recess of the first supporting medium;
the side surface of the first supporting medium is provided with a low-frequency medium substrate in a surrounding mode, and the front surface of the low-frequency medium substrate is etched with a low-frequency antenna; a low-frequency reflecting plate is fixed below the second supporting medium through a supporting rod, and a plurality of foldable reflecting arms are uniformly distributed on the edge of the low-frequency reflecting plate;
the outer edge of the high-frequency antenna is connected with the upper edge of the low-frequency antenna; the high-frequency antenna is connected with an inner conductor at one end of the feed cable, and an outer conductor of the feed cable is connected with the matching circuit; the other end of the feeder cable is secured at the feeder port.
Further perfecting the technical scheme, the high-frequency antenna is a planar equiangular spiral structure antenna, and the low-frequency antenna is a conical surface spiral structure antenna.
Further, the reflection arm is connected with the low-frequency reflection plate through a rotary joint.
Further, the number of the reflecting arms is 8.
Further, the high-frequency dielectric substrate adopts a polytetrafluoroethylene dielectric plate, and the low-frequency dielectric substrate adopts a dielectric plate with the model of ULTRALAM 3908.
Further, the first supporting medium is made of soft nylon materials, and the second supporting medium is made of hard nylon materials.
The beneficial effects are that: (1) The invention is based on the non-frequency-variable antenna principle, skillfully combines the planar equiangular spiral antenna and the conical surface spiral antenna, effectively expands the frequency band width of the antenna, and realizes the dual-frequency sharing of UHF frequency band and S frequency band; and the volume is small, the weight is light, and the requirement of miniaturization is met.
(2) The high-frequency antenna adopts a back cavity type antenna structure, so that the radiation efficiency is high; the integrated feed network is adopted, so that the contradiction among broadband, miniaturization and low loss in the antenna feed circuit is solved, and the broadband of the antenna is realized.
(3) The low-frequency antenna provided by the invention adopts a novel flexible material, so that the conformal shape with a supporting medium is ensured, and the low section of the antenna is realized.
(4) The high-frequency antenna and the low-frequency antenna both adopt spiral structures, so that the circular polarization axial ratio of the antenna is ensured to be low.
(5) The invention adopts a round platform structure, has smaller volume and lower section; the reflecting plate and the supporting rod are made of metal, other parts are made of light materials, and the weight is light; the lower part of the round table is hollow, so that the weight of the antenna is further reduced, and the portability of the antenna is improved.
Drawings
FIG. 1 is a cross-sectional view of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a top view of the structure of fig. 1.
Fig. 4 is a bottom closure schematic view of fig. 1.
Fig. 5 is a bottom expanded view of fig. 1.
Fig. 6 shows the measured standing wave results of 320 mhz-2.3 ghz antennas.
In the figure, 1, a high-frequency antenna; 2. a low frequency antenna; 3. a matching circuit; 4. a feed cable; 5. a high-frequency dielectric substrate; 6. a first support medium; 7. a second support medium; 8. a low frequency reflection plate; 9. a low frequency dielectric substrate; 10. a reflective arm; 11. a screw hole; 12. a nut; 13. a support rod; 14. a rotary joint; 15. a through hole; 16. a feed port; 17. a high-frequency reflecting plate.
Detailed Description
The technical scheme of the invention is described in detail below through the drawings, but the protection scope of the invention is not limited to the embodiments.
Example 1: as shown in fig. 1, 2 and 3, the dual-frequency common antenna includes a first supporting medium 6, a second supporting medium 7, a high-frequency medium substrate 5, a low-frequency medium substrate 9, a high-frequency reflecting plate 17, a low-frequency reflecting plate 8, a supporting rod 13 and a feeder cable 4.
The first supporting medium 6 is of a truncated cone structure with a T-shaped concave top and a hollow lower part, and the second supporting medium 7 is arranged at the bottom of the first supporting medium 6. The second supporting medium 7 is provided with a screw hole 11, and the first supporting medium 6 is fixed on the second supporting medium 7 through a nut 12.
The high-frequency medium substrate 5 is arranged in the T-shaped transverse recess of the first supporting medium 6, and the upper edge of the high-frequency medium substrate 5 is flush with the upper edge of the first supporting medium 6. The front side of the high-frequency dielectric substrate 5 is etched to form a high-frequency antenna 1, and the back side of the high-frequency dielectric substrate 5 is etched to form a matching circuit 3; the high-frequency antenna 1 adopts a planar equiangular spiral structure antenna. The high-frequency reflecting plate 17 is in a trapezoid structure and is arranged at the bottom of the 6T-shaped longitudinal recess of the first supporting medium.
The low-frequency dielectric substrate 9 is arranged on the side face of the first supporting medium 6 in a surrounding mode, the low-frequency antenna 2 is etched on the front face of the low-frequency dielectric substrate 9, and the low-frequency antenna 2 is a conical surface spiral structure antenna. The outer edge of the high frequency antenna 1 is connected to the upper edge of the low frequency antenna 2 at the top edge of the first supporting medium 6.
The low-frequency reflecting plate 8 is arranged below the second supporting medium 7, and the low-frequency reflecting plate 8 is fixedly connected with the second supporting medium 7 through a supporting rod 13. The low-frequency reflecting plate 8 is of a circular structure, and a screw hole 11 is formed in the center of the low-frequency reflecting plate 8; a screw hole 11 is formed in the center of the second supporting medium 7, one end of a supporting rod 13 is fixed with the second supporting medium 7 through a nut 12, and the other end of the supporting rod 13 is fixed with the low-frequency reflecting plate 8 through the nut 12. The circumference edge of the low frequency reflecting plate 8 is uniformly provided with a plurality of reflecting arms 10, preferably, the number of the reflecting arms 10 is 8; the reflection arm 10 is connected with the low-frequency reflection plate 8 through a rotary joint 14, and the folding and unfolding of the reflection arm 10 are realized through the rotary joint 14.
The invention adopts single-port feed, through holes 15 are arranged at the corresponding positions of the first supporting medium 6 and the second supporting medium 7, one end of the feed cable 4 is fixed at the feed port 16, the other end of the feed cable 4 passes through the through holes 15, an outer conductor of the feed cable 4 is connected with the matching circuit 3, and an inner conductor of the feed cable 4 passes through the high-frequency medium substrate 5 and is connected with the high-frequency antenna 1, so that the feed of the antenna is realized.
The high-frequency dielectric substrate 5 adopts a polytetrafluoroethylene dielectric plate, and the low-frequency dielectric substrate 9 adopts a dielectric plate with the model of ULTRALAM3908 of Rogers company; the first supporting medium 6 is made of soft nylon material, and the second supporting medium 7 is made of hard nylon material, so that the device is light in weight.
The working principle of the invention is as follows: when an input signal is applied to the feed port 16, the signal is transmitted to the matching circuit 3 and the high-frequency antenna 1 via the feed cable 4. As shown in fig. 4 and 5, if the antenna only needs to operate in the S-band, the reflecting arm 10 is in a closed state; if the antenna is required to operate in both the S band and the UHF band, the reflector arm 10 is in an extended state. To prevent the reflective arms 10 from breaking when the antenna is not in operation, the reflective arms 10 should be folded closed.
As shown in FIG. 6, experiments show that the standing wave of the antenna is smaller than 2.0 in the UHF frequency band and the S frequency band, which indicates that the antenna can completely cover the UHF frequency band and the S frequency band and has higher radiation efficiency.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A dual-frequency common antenna comprises a first supporting medium, wherein the top of the first supporting medium is in a T-shaped concave structure, the lower part of the first supporting medium is hollow, and a second supporting medium is arranged at the bottom of the first supporting medium; the method is characterized in that: a high-frequency medium substrate is arranged in the T-shaped transverse recess of the first supporting medium, a high-frequency antenna is etched on the front surface of the high-frequency medium substrate, a matching circuit is etched on the back surface of the high-frequency medium substrate, and a high-frequency reflecting plate is arranged in the T-shaped longitudinal recess of the first supporting medium;
the side surface of the first supporting medium is provided with a low-frequency medium substrate in a surrounding mode, and the front surface of the low-frequency medium substrate is etched with a low-frequency antenna; a low-frequency reflecting plate is fixed below the second supporting medium through a supporting rod, and a plurality of foldable reflecting arms are uniformly distributed on the edge of the low-frequency reflecting plate;
the outer edge of the high-frequency antenna is connected with the upper edge of the low-frequency antenna; the high-frequency antenna is connected with an inner conductor at one end of the feed cable, and an outer conductor of the feed cable is connected with the matching circuit; the other end of the feed cable is fixed at the feed port;
the high-frequency antenna is a planar equiangular spiral structure antenna, and the low-frequency antenna is a conical surface spiral structure antenna.
2. The dual-frequency shared antenna according to claim 1, wherein: the reflecting arm is connected with the low-frequency reflecting plate through a rotary joint.
3. The dual-frequency shared antenna according to claim 1, wherein: the number of the reflecting arms is 8.
4. The dual-frequency shared antenna according to claim 1, wherein: the high-frequency dielectric substrate adopts a polytetrafluoroethylene dielectric plate, and the low-frequency dielectric substrate adopts a dielectric plate with the model of ULTRALAM 3908.
5. The dual-frequency shared antenna according to claim 1, wherein: the first supporting medium is made of soft nylon materials, and the second supporting medium is made of hard nylon materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810606153.9A CN108666734B (en) | 2018-06-13 | 2018-06-13 | Dual-frequency shared antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810606153.9A CN108666734B (en) | 2018-06-13 | 2018-06-13 | Dual-frequency shared antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108666734A CN108666734A (en) | 2018-10-16 |
| CN108666734B true CN108666734B (en) | 2024-01-16 |
Family
ID=63775838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810606153.9A Active CN108666734B (en) | 2018-06-13 | 2018-06-13 | Dual-frequency shared antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108666734B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6072441A (en) * | 1997-11-06 | 2000-06-06 | Nec Corporation | Method of producing a helical antenna and the helical antenna apparatus |
| US6653987B1 (en) * | 2002-06-18 | 2003-11-25 | The Mitre Corporation | Dual-band quadrifilar helix antenna |
| WO2008102406A2 (en) * | 2007-02-21 | 2008-08-28 | Clarbruno Vedruccio | Circular polarization omnidirectional antenna |
| CN201584489U (en) * | 2009-12-21 | 2010-09-15 | 摩比天线技术（深圳）有限公司 | Double-frequency dual-polarization antenna oscillator |
| CN201629394U (en) * | 2010-02-02 | 2010-11-10 | 国基电子（上海）有限公司 | Dual-frequency antenna |
| CN105609921A (en) * | 2015-11-17 | 2016-05-25 | 西安电子科技大学 | Small high and low frequency coaxial dual-polarized base station antenna unit |
| CN207441956U (en) * | 2017-12-07 | 2018-06-01 | 南京乾波通信技术有限公司 | A kind of satellite communication double frequency round polarized antenna |
| CN208655873U (en) * | 2018-06-13 | 2019-03-26 | 南京乾波通信技术有限公司 | A kind of Bifrequency shared antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8581801B2 (en) * | 2010-06-01 | 2013-11-12 | Raytheon Company | Droopy bowtie radiator with integrated balun |
-
2018
- 2018-06-13 CN CN201810606153.9A patent/CN108666734B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6072441A (en) * | 1997-11-06 | 2000-06-06 | Nec Corporation | Method of producing a helical antenna and the helical antenna apparatus |
| US6653987B1 (en) * | 2002-06-18 | 2003-11-25 | The Mitre Corporation | Dual-band quadrifilar helix antenna |
| WO2008102406A2 (en) * | 2007-02-21 | 2008-08-28 | Clarbruno Vedruccio | Circular polarization omnidirectional antenna |
| CN201584489U (en) * | 2009-12-21 | 2010-09-15 | 摩比天线技术（深圳）有限公司 | Double-frequency dual-polarization antenna oscillator |
| CN201629394U (en) * | 2010-02-02 | 2010-11-10 | 国基电子（上海）有限公司 | Dual-frequency antenna |
| CN105609921A (en) * | 2015-11-17 | 2016-05-25 | 西安电子科技大学 | Small high and low frequency coaxial dual-polarized base station antenna unit |
| CN207441956U (en) * | 2017-12-07 | 2018-06-01 | 南京乾波通信技术有限公司 | A kind of satellite communication double frequency round polarized antenna |
| CN208655873U (en) * | 2018-06-13 | 2019-03-26 | 南京乾波通信技术有限公司 | A kind of Bifrequency shared antenna |
Non-Patent Citations (1)
| Title |
|---|
| 基于谐振式反射器的UHF/S双频双定向蝶形天线;谢继杨, 彭麟, 温保健, 姜兴;《电波科学学报》;第第32卷卷(第第6期期);742-749 * |
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| Publication number | Publication date |
|---|---|
| CN108666734A (en) | 2018-10-16 |
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