CN113612005B - 4-element GPS anti-interference antenna array loaded with director and mobile communication system - Google Patents
4-element GPS anti-interference antenna array loaded with director and mobile communication system Download PDFInfo
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- H—ELECTRICITY
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- H01Q—ANTENNAS, i.e. RADIO AERIALS
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- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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Abstract
The invention belongs to the technical field of microwave antennas, and discloses a 4-element GPS anti-interference antenna array and a mobile communication system of a loading director, wherein the 4-element GPS anti-interference antenna array of the loading director is provided with: the antenna comprises an antenna cavity, wherein a microstrip antenna array is arranged on the antenna cavity, and antenna units are tightly fixed by screws with the diameter of 2.5 mm. The 4-element GPS anti-interference antenna array loaded with the director provided by the invention has a simple and compact structure, and can solve the problem that the miniaturization and high performance of the existing GPS anti-interference antenna are difficult to combine by combining the antenna unit array design and the director, so that the invention can be widely applied to a GPS anti-interference antenna system needing miniaturization. The director designed by the invention improves the gain of the corresponding frequency band antenna under the condition of not causing great influence on other frequency band antennas, improves the axial ratio of the corresponding antenna, has compact structure and easy installation, and ensures the overall performance of the 4-element GPS anti-interference antenna.
Description
Technical Field
The invention belongs to the technical field of microwave antennas, and particularly relates to a 4-element GPS anti-interference antenna array and a mobile communication system loaded with a director.
Background
Since 1994, deployment of a GPS anti-interference system is completed, and the GPS anti-interference system is continuously developed, currently, the GPS system plays a very important role in military and civil use, irreplaceable roles are played in various aspects such as surveying and mapping, navigation and the like, the performance of the GPS anti-interference antenna directly influences the whole system, at present, a microstrip antenna is widely applied to the GPS anti-interference antenna system due to the advantages of low profile, simple structure, easiness in miniaturization and the like, and further challenges are provided for antenna design along with the development of the antenna system. With the requirement of a modern GPS anti-interference system, a plurality of frequency band antennas are often placed in a very limited space, when the same frequency band antenna array is placed, when one antenna unit is excited, energy traction is generated due to the same electrical length, so that the antenna gain is reduced, and the like. The design research contains 6 frequency channels, totally 13 antenna unit's GPS anti-interference antenna 4-element array, according to corresponding demand this antenna array is placed inside the cavity that the radius is only 115mm, consequently make miniaturized design to every antenna unit, high dielectric constant dielectric plate has been adopted, but antenna unit gain has been reduced, according to GPS anti-interference demand, the antenna of a plurality of the same frequency channels is placed to the cavity outermost periphery, but when one of them unit antenna of excitation, the energy can have the part to draw and place on other the same frequency channel antennas of outermost periphery, further reduce unit gain, great influence has been caused to antenna system performance. Aiming at the problem, a 'yersinia scattering cold' -shaped director is designed and placed at the position 15mm above the cavity, so that the gain of B3 and B2B frequency band antennas is obviously improved under the condition of not generating large influence on S, L, B1 and R1 frequency band antennas, and the axial ratio performance of the B3 and B2B antennas is improved. The 4-element anti-interference antenna array loaded with the director solves the problem that the corresponding antenna of the GPS anti-interference antenna array has low gain, optimizes the axial ratio performance of the corresponding antenna, has simple structure and easy installation, and is widely suitable for the GPS anti-interference antenna array with low gain.
The prior art is as follows: in 2007, document 1, y, zhou, c, chen and j.l. Volakis, "Dual Band Proximity-Fed buffered Antenna for Tri-Band GPS Applications," in IEEE Transactions on Antennas and Propagation, vol.55, no. 1, pp.220-223, jan.2007, doi: 10.1109/tap.2006.888476 ] proposes a laminated Antenna using L-type probe feeding, covering three bands of L1, L2 and L5 in GPS, and the upper and lower layers are miniaturized by using dielectric plates with dielectric constants of 16 and 30, respectively, and the GPS Antenna is miniaturized while covering 3 bands, and has a simple structure, but the gain of the Antenna is only 2dBi.
In 2016, "Analysis and Design of a Low-Cost Dual-Band Compact Polarized Antenna for GPS Application," in IEEE Transactions on Antennas and Propagation, vol.64, no. 1, pp.365-370, jan. 2016, doi: 10.1109/TAP.2015.2501849, reference 2, ", sun, H.Zheng and Y.Liu.]A miniaturized microstrip antenna loaded with a double-coupling short-circuit probe covers L1 and L2 frequency bands in a GPS (global positioning system), and the total size of the antenna is reduced to lambda by using a loaded short-circuit metalized via hole technology 0 ×λ 0 ×λ 0 And 19, the dielectric plate adopts low-cost F4b, standing waves in two frequency bands are lower than 1.5, the gain is higher than 4dBi, and the antenna unit has the advantages of broadband, miniaturization and higher gain, but the antenna is more complex in structure and more difficult to process.
In 2014, patent 1[ Shenzhen Huaxin antenna technology Limited, anti-jamming antenna: CN201420378406.9[ P ]. 2014-12-24 ] proposes a GPS antenna structure and a GPS antenna wireless communication device, wherein the GPS antenna structure comprises an antenna array element and a chassis for fixing the antenna array element, the antenna unit has the advantage of high isolation, but the structure does not place antennas of multiple frequency bands, and the unit size is relatively large.
In 2015, patent 2[ Shenzhen Futai Macro precision industries, inc., midami communication Limited, CN201310712342.1[ P ]. 2015-06-24 ] proposes a GPS antenna structure and a GPS antenna wireless communication device, wherein the GPS antenna structure comprises a flexible circuit board, a director, a reflector, an active oscillator and other fixed structures, and the GPS antenna is in the form of a yagi antenna, so that the advantage of high directivity and high gain is achieved, but the antenna structure is too large in size and cannot transmit circularly polarized waves.
In 2016, a miniaturized seven-array-element self-adaptive anti-interference antenna is proposed by patent 3[ Peking space flight Long-standing aircraft research institute, china launch vehicle technology research institute ], CN201610879696.9[ P ]. 2017-02-22 ], and the antenna is miniaturized by adopting a plate with the dielectric constant of 10.2, 6 auxiliary antennas are arranged around a main antenna at equal angles, and the antenna, a low-noise amplifier and a filter are integrated into a whole.
In 2017, a patent 4[ Shenzhen Shanghai science and technology Limited, inc. of Shenzhen, anti-interference array integrated antenna is provided, wherein CN201710562901.3[ P ]. 2017-11-03 ], the device comprises an antenna bottom plate, a multi-feed-point microstrip antenna unit, a plurality of anti-interference units and a joint component; the antenna has stable phase, a symmetrical directional diagram, a wider axial ratio bandwidth and an impedance bandwidth, but the structural unit cannot be miniaturized, and the number of the antennas placed in a cavity is small.
In 2020, patent 5[ Mianyang North Star communication technology Co., ltd., an adaptive small-volume Beidou third-generation anti-interference antenna, CN202020380994.5[ P ]. 2020-08-28 ] proposes an adaptive small-volume anti-interference antenna technology working in the Beidou third-generation frequency band, the device comprises 4 antenna units adopting composite materials and silver-coated upper surfaces, and a Y-shaped arrangement method is adopted.
In summary, most GPS antennas are miniaturized by using a high dielectric constant method, which results in an insufficient antenna gain, or are miniaturized by using other methods, but the structure is more complicated. Currently, directors are mostly applied to linearly polarized antennas, and only a few are applied to circularly polarized antennas, while the use of directors is rare for microstrip antenna forms in the GPS system. Document 1 proposes a laminated antenna using an L-shaped probe feed, in which a single antenna covers three frequency bands of L1, L2, and L5 in the GPS, and the upper and lower layers are miniaturized by using dielectric plates having dielectric constants of 16 and 30, respectively, but the gain of the antenna is only 2dBi. Although the document 2 designs a miniaturized microstrip antenna loaded with a double-coupling short-circuit probe to cover the L1 and L2 frequency bands in the GPS, and the antenna unit has the advantages of broadband, miniaturization, and higher gain, the antenna structure is more complex, and the processing difficulty is greater. Patent 1 designs a GPS antenna structure and a GPS antenna wireless communication device, which do not place antennas of multiple frequency bands and have a relatively large unit size, although they have the advantage of high isolation. Patent 2 has designed a GPS antenna structure and GPS antenna wireless communication device, and the device has adopted the director to have the advantage that high directive property high gain, but this antenna structure size is too big and can't launch circular polarized wave. Patent 3 has designed a miniaturized seven array element self-adaptation anti-interference antenna, though has small, light in weight, the advantage that the consumption is little, the interference killing feature is strong, but the less performance of frequency channel that array element covered is comparatively single. Patent 4 designs an anti-interference antenna integrated antenna's device, and although the antenna has stable phase place, symmetrical directional diagram, wider axial ratio bandwidth and impedance bandwidth, this constitutional unit fails to miniaturize and the cavity is inside to place the antenna quantity less. Patent 5 designs a self-adaptive small-volume anti-interference antenna technology working in the third generation of the Beidou, the self-adaptive small-volume anti-interference antenna technology is easy to form hemispherical beams and simple in structure, but the antenna is unstable in single-feed performance and cannot cover multiple frequency bands. Therefore, there is a need for a new 4-element GPS jammer resistant antenna array with a loaded director to overcome the shortcomings of the prior art.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) In the prior art, the GPS anti-interference antenna is usually miniaturized by high dielectric constant or loading some parasitic structures on the microstrip patch antenna, which can cause that the gain is reduced by a certain extent or the size is not miniaturized enough.
(2) Aiming at a director, the prior art is rarely applied to a GPS anti-interference antenna in a micro-strip antenna form, and can not meet the requirements of miniaturization and high gain in a GPS anti-interference system.
The difficulty in solving the above problems and defects is: through the analysis, the miniaturization method of the modern common GPS anti-interference antenna system mostly uses high dielectric constant or loads some parasitic structures on a microstrip patch antenna, both methods have certain disadvantages, and meanwhile, through system research, the director is rarely applied to the GPS antenna system in a microstrip antenna form, the miniaturization method is characterized in that the dielectric constant 10.2 is adopted as a dielectric plate, and the B2B, the R1 and the B2B and the B1 with higher frequency are designed in a laminated mode, so that 13 antenna units comprise 6 frequency band antennas and are placed in a cavity with the radius of only 115mm, meanwhile, in order to improve certain antenna gains, the director unit is designed to be suitable for the anti-interference 4-element array, the director unit is based on the aesthetic design of central symmetry like a 'Luyao-Cool' structure, the structure is distributed above and below the dielectric plate, the antenna unit is miniaturized by adopting a zigzag structure, the antenna unit is integrated with the GPS microstrip antenna array, the gain is greatly improved, the axial ratio is correspondingly improved, the structure is simple and light, and the defect can be found in a way of being integrated with the antenna cover above the array, and the existing antenna cover can not be obviously found.
The significance of solving the problems and the defects is as follows: miniaturization and high gain are important indexes of GPS antenna design, the existing invention is difficult to realize the miniaturization and high gain simultaneously, and the director is rarely applied to a GPS antenna system in the form of a microstrip patch. The invention has the first innovation point that a unique array mode is adopted, a laminated design is carried out on a frequency band antenna with higher frequency, the antenna units are miniaturized by adopting dielectric plates with the dielectric constant of 10.2, 13 antenna units with 6 frequency bands are placed in a cavity with the radius of 115mm, and the second innovation point is that a 'Jelu spray cooling' type director unit with the miniaturization advantage is designed, the units in the form are arranged on the antenna units with low gain in a circular ring mode, and the gains of B3 and B2B are improved under the condition of not generating great influence on antennas in other frequency bands. The invention is simple and compact, is easy to process, and is widely applied to the GPS anti-interference antenna system in the form of a microstrip patch.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a 4-element GPS anti-interference antenna array loaded with a director and a mobile communication system.
The invention is realized in this way, a 4-element GPS anti-interference antenna array of the loading director, the director applied to GPS anti-interference antenna is provided with:
an antenna cavity;
the antenna cavity is provided with a micro-strip antenna array, and the antenna units are tightly fixed by screws with the diameter of 2.5 mm.
Furthermore, the microstrip antenna array comprises six frequency band microstrip antenna arrays including B3, B2B, B1, R1, S and L1, a director structure composed of Yelu spreading cold-shaped units is arranged at the top of the microstrip antenna array, and the distance from the bottom of the director structure to the top of the cavity is 15mm.
Furthermore, a plurality of screw holes are punched on the antenna cavity body and used for fixing the microstrip antenna unit.
Furthermore, the 13 antenna units are fixed above the cavity, the director structure is placed right above the antenna array, and the size of the outer diameter of the director is consistent with the size of the radius of the cavity.
Further, the director structure comprises an upper layer of a directing radiation patch, a lower layer of a directing radiation patch and a first antenna dielectric plate; the upper layer of the first antenna dielectric plate is printed with the upper layer of the guiding radiation patch, and the lower layer of the first antenna dielectric plate is printed with the lower layer of the guiding radiation patch.
Further, the size of the internal unit of the director is 47mm by 47mm, the thickness of the first antenna dielectric plate is 1mm, and the bending distance of each director unit is 3.4mm; the dielectric constant of the first antenna dielectric plate is 2.65, the inner diameter of the formed annular array is 57.8mm, the outer diameter of the formed annular array is 115mm, the thickness of the formed annular array is 1mm, and the upper portion and the lower portion of the first antenna dielectric plate are provided with the guide radiation patches in a distributed mode.
Further, the microstrip antenna array comprises 4B 3 frequency band antennas, 4S frequency band antennas, 2B frequency band antennas, 1B 2B frequency band and B1 frequency band laminated antenna, 1B 2B frequency band and R1 frequency band laminated antenna, and 1L frequency band antenna.
The 4B 3 frequency band antennas are No. 2 dielectric plates, the size of each dielectric plate is 45mm 6mm, the peripheral cutting angles are 10mm 3mm and are used for fixing the antennas, and B3 frequency band radiation patches are printed on the No. 2 dielectric plates; the 4S-band antennas are No. 3 dielectric plates, the size of each S-band antenna is 30mm 6mm, the peripheral cutting angles 12mm 3mm are used for fixing the antennas, and S-band radiation patches are printed above the No. 3 dielectric plates; the 2B 2B frequency band antennas are No. 4 dielectric plates, the size of each B2B frequency band antenna is 48.8mm x 6mm, the peripheral cutting angles are 10mm x 3mm and are used for fixing the antennas, and B2B frequency band radiation patches are printed above the No. 4 dielectric plates; the number-5 dielectric plate and the number-6 dielectric plate are respectively arranged above and below the laminated antenna with the 1B 2B frequency band and the B1 frequency band, the peripheral cutting angles are 10mm × 3mm and used for fixing the antenna, a B1 frequency band radiation patch is printed above the number-5 dielectric plate, and a B2B frequency band radiation patch is printed above the number-6 dielectric plate; the number 7 dielectric plate and the number 8 dielectric plate are respectively arranged above and below the laminated antenna with the 1B 2B frequency band and the R1 frequency band, the peripheral cutting angles are 10mm × 3mm and used for fixing the antenna, the R1 frequency band radiation patch is printed above the number 7 dielectric plate, and the B2B frequency band radiation patch is printed above the number 8 dielectric plate; 4L frequency channel antenna is No. 9 dielectric plates, and the size is 38mm 6mm, and corner cut 10mm 3mm all around is used for fixed antenna, no. 9 dielectric plates top printing L frequency channel radiation paster.
The microstrip antenna radiation patch is fed by a bridge with equal amplitude and 90-degree phase shift, and the bridge is welded on the power dividing plate at the back of each antenna unit.
It is another object of the present invention to provide a mobile communication system comprising said 4-element GPS antijam antenna array loaded with directors.
Another object of the present invention is to provide a GPS antijamming antenna system, which includes the 4-element GPS antijamming antenna array of the loading director.
By combining all the technical schemes, the invention has the advantages and positive effects that: the invention provides a 4-element GPS anti-interference antenna array of a loading director.A cavity of an antenna is provided with a six-frequency-band microstrip antenna array comprising B3, B2B, B1, R1, S and L1, and each microstrip antenna is tightly fixed with the cavity through a m2.5 screw; seen from the outermost periphery, the outermost periphery comprises 4B 3 frequency band microstrip antennas, 2B 2B frequency band antennas, 1B 2B and R1 frequency band laminated antenna, 1B 2B and B1 frequency band laminated antenna, the secondary periphery comprises 4S frequency band microstrip antennas, 1L frequency band antenna is placed at the center, and the array comprises 13 antenna units in total; the director is a circular ring structure arranged right above the antenna array, and the distance from the top of the cavity to the bottom of the director is 15mm; the microstrip antenna array is fixed on the metal cavity, the director is placed right above the microstrip antenna array, and the microstrip antenna array can be fixed by adopting a method of integrating with the antenna housing. The invention ensures that 13 antenna units are accommodated in a very limited space under the condition of antenna shape, the loaded director can greatly improve the gain of B3 and B2B frequency band antennas, and simultaneously improve the axial ratio characteristic of B3 and B2B, but has no great influence on the gain of R1, B1, S and L frequency band antennas.
The invention can miniaturize each antenna unit under the condition of ensuring the performance of the antenna, and a plurality of antenna units with a plurality of frequency bands are placed under a relatively small-size structure. The director designed by the invention improves the gain of the corresponding frequency band antenna under the condition of not causing great influence on other frequency band antennas, improves the axial ratio of the corresponding antenna, and has compact structure and easy installation.
The array mode of the invention has the advantage of miniaturization of the antenna, and 13 unit antennas are placed in a cavity with the radius of 115mm by adopting a method of designing a high-dielectric-constant dielectric plate and a laminated antenna. For the unit with lower gain, the gain is improved by adopting a method of placing a director, and the overall performance of the 4-element GPS anti-interference antenna is ensured.
In summary, the present invention has a simple and compact structure, and can solve the problem that the miniaturization and high performance of the GPS anti-jamming antenna are difficult to be achieved at present by combining the antenna unit array design and the director, so that the present invention can be widely applied to the GPS anti-jamming antenna system requiring miniaturization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a 4-element GPS antijam antenna array loaded with a director according to an embodiment of the present invention;
in the figure: 1. a director structure; 2. 4-element GPS anti-interference microstrip antenna array; 3. a metal cavity.
FIG. 2 is a schematic diagram of a director structure provided by an embodiment of the present invention;
in the figure: 101. an upper director radiation patch; 102. a lower director radiation patch; 103. antenna I dielectric plate.
FIG. 3 is a schematic diagram of a microstrip antenna array according to an embodiment of the present invention;
in the figure: 201. b3 frequency band antenna units (1, 4 in total, rotated every 90 °); 202. B2B frequency band antenna units (1 and 2 in total are arranged in every 180 degrees of rotation); 203. B2B and B1 frequency band laminated antenna units (the B2B and B1 frequency bands are respectively laminated up and down and are totally 1); 204. B2B and R1 frequency band laminated antenna units (the B2B and R1 frequency bands are respectively arranged in an up-down laminated mode, and the number of the antenna units is 1); 205. s frequency band antenna units (1, 4 in total, are rotatably arranged every 90 degrees); 206. l-band antenna elements (1 for a single transmit antenna).
FIG. 4 is a schematic diagram of a metal chamber structure provided in an embodiment of the present invention;
in the figure: 301. m2.5 screw holes; 302. metal chamber (thickness 7 mm).
Fig. 5 is a comparison diagram of simulation results of gain patterns of the B3 band antenna units phi =90 ° before and after the loading director provided by the embodiment of the present invention.
Fig. 6 is a comparison graph of simulation results of gain patterns of the B3 band antenna units phi =0 ° before and after the loading director provided by the embodiment of the present invention.
Fig. 7 is a comparison graph of simulation results of gain patterns of the B2B band antenna units phi =90 ° before and after the loading director provided by the embodiment of the present invention.
Fig. 8 is a graph comparing simulation results of gain patterns of B2B band antenna units phi =0 ° before and after the loading director provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art and along with the development of a communication system, the GPS anti-interference antenna needs to be miniaturized and the performance of the antenna is ensured, the invention provides a 4-element GPS anti-interference antenna array loaded with a director and a mobile communication system, wherein a micro-strip antenna unit adopts a dielectric constant of 10.2 as a dielectric plate, and simultaneously, a laminated design is carried out on B2B and R1, B2B and B1 with higher frequency, so that 13 antenna units containing 6 frequency bands are placed in a cavity with the radius of only 115mm, and meanwhile, in order to improve the antenna gains of the B2B and B3 frequency bands, a director suitable for the anti-interference 4-element array is designed, the director unit is based on the center symmetry aesthetic design shape such as a 'Yelu spreading cold' structure, the structure is distributed above and below the dielectric plate, the director unit is miniaturized by adopting a zigzag structure, and is integrated with the GPS micro-strip antenna array, the gain is greatly improved, and the axial ratio is correspondingly improved; the present invention is well suited for use in antenna systems that require miniaturization while ensuring high gain, and will be described in detail with reference to the accompanying drawings.
Those skilled in the art of the present invention can also implement other steps, and the 4-element GPS antijam antenna array loaded with a director of the present invention shown in fig. 1 is only one specific example.
As shown in fig. 1, a 4-element GPS antijamming antenna array loaded with a director according to an embodiment of the present invention includes: the structure of the director is 1, 4-element GPS anti-interference microstrip antenna array 2 and metal cavity 3. The metal cavity 3 is provided with a 4-element GPS anti-interference microstrip antenna array 2, and the back of the metal cavity 3 is tightly fixed with the 4-element GPS anti-interference microstrip antenna array through a screw hole; the 4-element GPS anti-interference microstrip antenna array 2 is a microstrip antenna array covering 13 antenna units with 6 frequency bands.
As shown in fig. 2, the director structure provided by the embodiment of the present invention includes: 101. an upper director radiation patch; 102. a lower director radiation patch; 103. antenna I dielectric plate.
The distance between the top of the metal cavity 3 and the bottom of the director structure 1 is 15mm, the 4-element GPS anti-interference microstrip antenna array 2 is fixed on the metal cavity 3, the outer diameter of the director structure 1 is consistent with the size of the metal cavity 3, and the director structure 1 can be tightly fixed in an integrated mode with an antenna housing.
The director structure 1 consists of an upper director radiation patch 101, a lower director radiation patch 102 and a dielectric plate No. 1 respectively, the inner diameter of the whole director structure is 57.8mm, the outer diameter is 115mm, the director units are in an aesthetic design shape based on central symmetry like a 'Jelu spray cold' structure, the structures are distributed above and below the dielectric plate, and the director units are miniaturized by adopting a zigzag structure.
The director units are rotated to form a 1 × 8 array according to the distribution condition of the B2B and B3 frequency band antennas, and the array can be placed above the GPS anti-interference antenna array in an integrated mode with an antenna housing to form the 4-element GPS anti-interference antenna array loaded with the director.
As shown in fig. 3, the 4-element GPS anti-jamming microstrip antenna array 2 provided in the embodiment of the present invention includes: 201. b3 frequency band antenna units (1 for every 90 degrees rotation, 4 in total); 202. B2B frequency band antenna units (1 and 2 in total are arranged in every 180 degrees of rotation); 203. B2B and B1 frequency band laminated antenna units (the B2B and B1 frequency bands are respectively arranged in an up-down laminated mode, and the number of the antenna units is 1); 204. B2B and R1 frequency band laminated antenna units (the B2B and R1 frequency bands are respectively laminated up and down and are totally 1); 205. s-band antenna units (1, 4 per 90 ° rotation); 206. l-band antenna elements (1 for a single transmit antenna).
As shown in fig. 4, the metal cavity 3 provided in the embodiment of the present invention includes: 301. m2.5 screw holes; 302. metal chamber (thickness 7 mm).
The technical effects of the present invention will be described in detail with reference to simulation experiments.
Fig. 5 is a graph illustrating comparison of simulation results of gain patterns of the B3 band antenna elements phi =90 ° before and after the loading director in an embodiment of the present invention. As can be seen, the vertical gain of the B3 band without the directors is 2.94dBi, and the gain is increased to 4.32dBi after the directors are loaded.
Fig. 6 is a graph illustrating a comparison of simulation results of gain patterns of the B3 band antenna unit phi =0 ° before and after the loading director in an embodiment of the present invention. As can be seen, the vertical gain of the B3 band without the directors is 2.94dBi, and the gain is increased to 4.32dBi after the directors are loaded.
Fig. 7 is a graph for comparing simulation results of gain patterns of the B2B band antenna unit phi =90 ° before and after the loading director in an embodiment of the present invention. As can be seen from the simulation results, the vertical gain value of the B2B band without the director is 3.55dBi, and the gain is increased to 5.60dBi after the director is loaded.
Fig. 8 is a graph for comparing simulation results of gain patterns of the B3 band antenna elements phi =0 ° before and after the loading director in an embodiment of the present invention. According to simulation results, the vertical gain value of the B2B frequency band without the director is 3.55dBi, and the gain is increased to 5.60dBi after the director is loaded.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When used in whole or in part, is implemented in a computer program product that includes one or more computer instructions. When the computer program instructions are loaded or executed on a computer, the procedures or functions according to the embodiments of the present invention are wholly or partially generated. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.)). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
The above description is only for the purpose of illustrating the embodiments of the present invention, and the scope of the present invention should not be limited thereto, and any modifications, equivalents and improvements made by those skilled in the art within the technical scope of the present invention as disclosed in the present invention should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a 4 yuan GPS anti-interference antenna array of loading director which characterized in that, the director who is applied to GPS anti-interference antenna is provided with:
an antenna cavity;
a microstrip antenna array is arranged on the antenna cavity, and the antenna units are tightly fixed by screws with the diameter of 2.5 mm;
the microstrip antenna array comprises six frequency band microstrip antenna arrays including B3, B2B, B1, R1, S and L, a director structure consisting of Yelu spreading cold-shaped units is arranged at the top of the microstrip antenna array, and the distance from the bottom of the director structure to the top of the cavity is 15mm; the periphery of the microstrip antenna array comprises 4B 3 frequency band microstrip antennas, 2B 2B frequency band antennas, 1B 2B and R1 frequency band laminated antennas, 1B 2B and B1 frequency band laminated antennas, the secondary periphery comprises 4S frequency band microstrip antennas, 1L frequency band antenna is placed in the center, and the array comprises 13 antenna units in total.
2. The director-loaded 4-element GPS jammer-resistant antenna array of claim 1, wherein the antenna cavity is tapped with screw holes for fixing the microstrip antenna elements.
3. The 4-element GPS antijam antenna array of claim 1, wherein 13 antenna units are fixed above the antenna cavity, the director structure is placed right above the antenna array, and the outside diameter of the director is the same as the radius of the antenna cavity.
4. The director-loaded 4-element GPS jammer-resistant antenna array of claim 1, wherein the director structure comprises an upper director radiation patch, a lower director radiation patch and an antenna dielectric slab; the upper layer of the first antenna dielectric plate is printed with the upper layer of the guiding radiation patch, and the lower layer of the first antenna dielectric plate is printed with the lower layer of the guiding radiation patch.
5. The 4-element GPS jammer-resistant antenna array with directors of claim 1, wherein the dimensions of the internal elements of the directors are 47mm x 47mm, the dimensions of the internal elements of the directors are calculated by the distance between the parallel opposite sides, and the thickness of the dielectric plate of antenna 1 is 1mm; the dielectric constant of the first antenna dielectric plate is 2.65, the inner diameter of the annular array formed by the first antenna dielectric plate is 57.8mm, the outer diameter of the annular array is 115mm, the thickness of the annular array is 1mm, and the upper portion and the lower portion of the first antenna dielectric plate are distributed and placed with the guiding radiation patches.
6. The 4-element GPS antijam antenna array of claim 1, wherein, the microstrip antenna array includes 4B 3 frequency band antennas, 4S frequency band antennas, 2B frequency band antennas, 1B 2B frequency band and B1 frequency band laminated antenna, 1B 2B frequency band and R1 frequency band laminated antenna and 1L frequency band antenna;
the 4B 3 frequency band antennas are No. 2 dielectric plates, the size of each dielectric plate is 45mm 6mm, the peripheral cutting angles are 10mm 3mm and are used for fixing the antennas, and B3 frequency band radiation patches are printed on the No. 2 dielectric plates; the 4S-band antennas are No. 3 dielectric plates, the size of each S-band antenna is 30mm 6mm, the peripheral cutting angles 12mm 3mm are used for fixing the antennas, and S-band radiation patches are printed above the No. 3 dielectric plates; the 2B 2B frequency band antennas are No. 4 dielectric plates, the size of each dielectric plate is 48.8mm 6mm, the peripheral cutting angles are 10mm 0mm 10mm 3mm and are used for fixing the antennas, and B2B frequency band radiation patches are printed on the No. 4 dielectric plates; a No. 5 dielectric plate and a No. 6 dielectric plate are respectively arranged above and below the laminated antenna with the 1B 2B frequency band and the B1 frequency band, the peripheral cutting angles are 10mm + 3mm and used for fixing the antenna, a B1 frequency band radiation patch is printed above the No. 5 dielectric plate, and a B2B frequency band radiation patch is printed above the No. 6 dielectric plate; a No. 7 dielectric plate and a No. 8 dielectric plate are respectively arranged above and below the laminated antenna with the 1B 2B frequency band and the R1 frequency band, the peripheral cutting angles are 10mm + 3mm and used for fixing the antenna, an R1 frequency band radiation patch is printed above the No. 7 dielectric plate, and a B2B frequency band radiation patch is printed above the No. 8 dielectric plate; 4L frequency channel antenna is No. 9 dielectric plates, and the size is 38mm 6mm, and corner cut 10mm 3mm all around is used for fixed antenna, no. 9 dielectric plates top printing L frequency channel radiation paster.
7. The 4-element GPS antijam antenna array of claim 6, wherein said microstrip antenna radiating patch is fed by a bridge of equal amplitude and 90 ° phase shift welded to the power splitter plate at the back of each antenna element.
8. A mobile communication system comprising a 4-element GPS jammer resistant antenna array loaded with directors as claimed in any one of claims 1 to 7.
9. A GPS jam-resistant antenna system including a 4-element GPS jam-resistant antenna array loaded with a director as claimed in any one of claims 1 to 7.
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| US7724201B2 (en) * | 2008-02-15 | 2010-05-25 | Sierra Wireless, Inc. | Compact diversity antenna system |
| CN104577314A (en) * | 2013-10-23 | 2015-04-29 | 中兴通讯股份有限公司 | Method for improving anti-interference capability of PCB, anti-interference PCB and terminal comprising anti-interference PCB |
| CN204045725U (en) * | 2014-07-09 | 2014-12-24 | 深圳市华信天线技术有限公司 | Anti-interference antenna |
| US20170149125A1 (en) * | 2015-11-19 | 2017-05-25 | Getac Technology Corporation | Helix antenna device |
| EP3553882B1 (en) * | 2017-01-04 | 2021-10-27 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Conductive cover component of terminal and terminal |
| CN107317107B (en) * | 2017-07-11 | 2023-09-08 | 深圳市鼎耀科技有限公司 | Anti-interference array integrated antenna |
| US11296670B2 (en) * | 2020-01-23 | 2022-04-05 | Qualcomm Incorporated | Impedance matching transceiver |
| CN211376933U (en) * | 2020-03-24 | 2020-08-28 | 绵阳北星通信科技有限公司 | Self-adaptive small-size Beidou third-generation anti-interference antenna |
| CN111416197B (en) * | 2020-03-31 | 2021-08-17 | Oppo广东移动通信有限公司 | Foldable housing assembly and foldable electronic device |
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Effective date of registration: 20240119 Address after: Room 7938, 2nd Floor, Building 4, Free Trade Industrial Park, No. 2168 Zhenghe Fourth Road, Fengdong New City, Xi'an City, Shaanxi Province, 710000 Patentee after: Shaanxi Rongxin Yida Technology Co.,Ltd. Address before: 710071 Xi'an Electronic and Science University, 2 Taibai South Road, Shaanxi, Xi'an Patentee before: XIDIAN University |