CN115566431B - A multi-element electrically small antenna with reconfigurable side-firing and horizontal omnidirectional patterns - Google Patents
A multi-element electrically small antenna with reconfigurable side-firing and horizontal omnidirectional patterns Download PDFInfo
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- CN115566431B CN115566431B CN202211347103.6A CN202211347103A CN115566431B CN 115566431 B CN115566431 B CN 115566431B CN 202211347103 A CN202211347103 A CN 202211347103A CN 115566431 B CN115566431 B CN 115566431B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
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Abstract
本申请提供一种边射和水平全向方向图可重构的多振子电小天线，包括相互平行设置的第一介质基板、第二介质基板；第一介质基板上、下表面分别设置有第一辐射金属贴片、T型连接金属片，第二介质基板的下表面设置有第二辐射金属贴片、T型辐射贴片；第一辐射金属贴片、T型连接金属片、第二辐射金属贴片两两之间均通过金属柱连接；第一辐射金属贴片上、第二辐射金属贴片上以及第二辐射金属贴片与T型辐射贴片之间均加载有PIN二极管，通过切换三个PIN二极管的通断状态实现边射与水平全向辐射的远场方向图切换。本发明突破了以往的方向图波束可重构、天线极化方式可重构，实现了垂直极化的水平全向辐射和圆极化的边射两种类型的方向图可重构。
The present application provides a multi-element electric small antenna with reconfigurable side-firing and horizontal omnidirectional patterns, including a first dielectric substrate and a second dielectric substrate arranged in parallel with each other; the first dielectric substrate is provided with a first radiating metal patch and a T-shaped connecting metal patch on the upper and lower surfaces respectively, and the second dielectric substrate is provided with a second radiating metal patch and a T-shaped radiating patch on the lower surface; the first radiating metal patch, the T-shaped connecting metal patch, and the second radiating metal patch are connected to each other through metal columns; PIN diodes are loaded on the first radiating metal patch, the second radiating metal patch, and between the second radiating metal patch and the T-shaped radiating patch, and the far-field directional pattern switching between side-firing and horizontal omnidirectional radiation is realized by switching the on-off state of the three PIN diodes. The present invention breaks through the previous directional pattern beam reconfiguration and antenna polarization mode reconfiguration, and realizes the reconfiguration of two types of directional patterns: vertically polarized horizontal omnidirectional radiation and circularly polarized side-firing.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a multi-oscillator small electric antenna with reconfigurable side-emission and horizontal omni-directional patterns.
Background
With the rapid development of wireless communication systems, reconfigurable antennas are getting more and more attention because of their effects of improving the communication capacity of wireless systems, eliminating polarization mismatch, and expanding the radiation coverage of antennas. Reconfigurable antennas are largely divided into frequency, polarization and pattern reconfigurability. The directional pattern reconfigurable antenna can dynamically change the radiation direction and the radiation beam type of the antenna, effectively reduce noise interference and enlarge the signal coverage, and is widely studied. Electrically small antennas are suitable for use in compact environments because of their small size. The design of electrically small antennas is mainly for dipole/monopole array combinations, corresponding to Huygens, yagi, etc. high gain antennas, broadband antennas, etc. But small electrically antennas with reconfigurable patterns are reported relatively rarely.
Disclosure of Invention
The invention aims to provide a multi-oscillator small electric antenna with reconfigurable side-emission and horizontal omni-directional patterns.
The invention aims at realizing the technical scheme that the device comprises a first dielectric substrate and a second dielectric substrate which are arranged in parallel;
The upper surface of the first medium substrate is provided with a first radiation metal patch, the lower surface of the first medium substrate is provided with a T-shaped connection metal sheet, and the lower surface of the second medium substrate is provided with a second radiation metal patch and a T-shaped radiation patch;
The first radiating metal patches, the T-shaped connecting metal sheets, the first radiating metal patches, the second radiating metal patches and the T-shaped connecting metal sheets are all connected through metal columns;
The first PIN diode is loaded on the first radiation metal patch, the second PIN diode is loaded on the second radiation metal patch, the second radiation metal patch is connected with the T-shaped radiation patch through the third PIN diode, and the far field pattern switching of side emission and horizontal omnidirectional radiation is realized by switching the on-off states of the first PIN diode, the second PIN diode and the third PIN diode.
Further, the first radiating metal patch comprises a first rectangular strip and a second rectangular strip which are mutually orthogonal, two ends of the first rectangular strip are connected with a first fan ring strip, and two ends of the second rectangular strip are connected with a second fan ring strip;
The LED lamp is characterized in that a rectangular ring groove and two circular holes with central symmetry are further formed in the first radiating metal patch, two ends of the first PIN diode are respectively connected with patches on two sides of the rectangular ring groove, the first radiating metal patch is connected with the second radiating metal patch through three first metal columns, and the first radiating metal patch is connected with the T-shaped connecting metal sheet through one second metal column.
Further, the T-shaped connecting metal sheet comprises a sixth rectangular strip and a seventh rectangular strip which are mutually perpendicular;
Two ends of the sixth rectangular strip are respectively connected with the second radiation patch through a third metal column, and the middle part of the sixth rectangular strip is connected with the first radiation metal patch through the second metal column;
The two third metal posts are respectively positioned right below the two circular holes.
Further, the second radiation metal patch comprises a first T-shaped patch, a second T-shaped patch, a third T-shaped patch and a fourth T-shaped patch which are sequentially rotated by 90 degrees along the center of the second dielectric substrate;
The first T-shaped patch and the third T-shaped patch are the same in size, the second T-shaped patch and the fourth T-shaped patch are the same in size, the first T-shaped patch and the second T-shaped patch are connected with each other through connecting strips, and the first T-shaped patch and the second T-shaped patch which are connected with each other are connected with the first radiation patch through three first metal columns;
The second T-shaped patch and the fourth T-shaped patch are respectively connected with the T-shaped connecting metal sheet through a third metal column.
Further, the first T-shaped patch and the third T-shaped patch both comprise a third rectangular strip and a third fan-ring strip connected with one end of the third rectangular strip far away from the center of the second medium substrate;
the second T-shaped patch and the fourth T-shaped patch both comprise a fourth rectangular strip and a fourth fan-ring strip connected with one end of the fourth rectangular strip far away from the center of the second medium substrate;
Rectangular grooves are formed in fourth rectangular strips of the second T-shaped patches, and two ends of the second PIN diode are connected with the patches on two sides of the rectangular grooves respectively.
Further, the T-shaped radiation patch comprises a fifth rectangular strip and a fifth fan-ring strip connected with one end of the fifth rectangular strip far away from the center of the second dielectric substrate;
And one end, close to the center of the second dielectric substrate, of the fifth rectangular strip is connected with the first T-shaped patch and the second T-shaped patch through a third PIN diode.
The coaxial cable antenna further comprises a coaxial cable feed, wherein an inner conductor of the coaxial cable feed is connected with the first radiation patch, and an outer conductor of the coaxial cable feed is connected with the first T-shaped patch and the second T-shaped patch;
The first radiating patch, the T-shaped connecting metal sheet, the first T-shaped patch, the T-shaped radiating patch and the fourth fan-shaped ring strip of the second T-shaped patch are connected with a paranoid inductor through the first paranoid patch, the second paranoid patch, the third paranoid patch, the fourth paranoid patch and the fifth paranoid patch respectively;
The first dielectric substrate and the second dielectric substrate are circular dielectric substrates.
Further, the radii of the first dielectric substrate and the second dielectric substrate are the same, the radii R 1 of the first dielectric substrate and the second dielectric substrate are 29mm, the thicknesses of the first dielectric substrate and the second dielectric substrate are the same, and the thicknesses h 1 of the first dielectric substrate and the second dielectric substrate are 0.254mm;
The distance h 2 between the first medium substrate and the second medium substrate is 8mm;
The length L 1 of the first paranoid patch is 0.8mm, the length L 2 of the second paranoid patch is 1mm, the length L 3 of the third paranoid patch is 1.2mm, the length L 4 of the fourth paranoid patch is 1.2mm, and the length L 3 of the fifth paranoid patch is 1.2mm.
Further, the width of the first rectangular strip is the same as the width of the second rectangular strip, and the width W 1 of the first rectangular strip is 8mm;
The inner radius and the outer radius of the first fan ring strip and the second fan ring strip are the same, the outer radius R 2 is 29mm, and the inner radius R 3 is 25mm;
The angle theta 1 of the first fan ring strip is 88 degrees, and the angle theta 2 of the second fan ring strip is 78 degrees;
the width W 2 of the rectangular ring groove is 0.2mm, and the diameter phi 1 of the circular hole is 0.7mm;
The length L 6 of the sixth rectangular strip is 8mm, the widths of the sixth rectangular strip and the seventh rectangular strip are W 3, and the width W 3 of the sixth rectangular strip and the seventh rectangular strip is 1.5mm;
The diameter phi 2 of the first metal column is 0.5mm, and the diameter phi 3 of the third metal column is 0.5mm;
The spacing g 1 between adjacent first metal columns is 2.8mm, the spacing g 2 between the first metal columns and the third metal columns is 6mm, and the spacing g 3 between the centers of the first metal columns and the second dielectric substrate is 3mm.
Further, the widths of the third rectangular strip and the fourth rectangular strip are the same, and the widths W 4 of the third rectangular strip and the fourth rectangular strip are all 8mm;
The inner radius R 4 of the third fan ring strip is 24mm, the outer radius R 5 of the third fan ring strip is 28mm, and the angle theta 3 of the third fan ring strip is 76 degrees;
The inner radius R 6 of the fourth fan ring strip is 20.5mm, the outer radius R 7 of the fourth fan ring strip is 24.5mm, and the angle theta 4 of the fourth fan ring strip is 71 degrees;
the spacing g 4 among the third T-shaped patch, the fourth T-shaped patch and the connecting strip is 0.25mm;
The width W 5 of the fifth rectangular strip is 8mm;
the inner radius R 8 of the fifth fan ring strip is 16.9mm, the outer radius R 9 of the fourth fan ring strip is 19.5mm, and the angle θ 5 of the fifth fan ring strip is 16 °.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the invention breaks through the prior directional pattern beam reconfigurability and antenna polarization mode reconfigurability, and realizes the reconfigurability of two types of directional patterns of horizontal omnidirectional radiation with vertical polarization and side-emission with circular polarization.
2. The invention has simple feed and high integration level, and can realize the functions only by one feed port and three PIN diodes.
3. The invention has the characteristics of small electricity and low section, is convenient to process and has low production cost.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Drawings
The drawings of the present invention are described below.
Fig. 1 is a three-dimensional exploded view of the antenna of the present invention.
Fig. 2 is a schematic diagram of an antenna according to the present invention.
Fig. 3 is a top view of a first dielectric substrate and a first radiating metallic patch of an antenna according to the present invention.
Fig. 4 is a dimensional diagram of a first dielectric substrate and a first radiating metallic patch of an antenna according to the present invention.
Fig. 5 is a bottom view of the first dielectric substrate and T-shaped connection metal sheet of the antenna of the present invention.
Fig. 6 is a dimensional view of a first dielectric substrate and a T-shaped connection metal sheet of the antenna of the present invention.
Fig. 7 is a bottom view of the second dielectric substrate, the second radiating metal patch and the T-shaped radiating patch of the antenna of the present invention.
Fig. 8 is a dimensional diagram of a second dielectric substrate, a second radiating metal patch, and a T-shaped radiating patch of the antenna of the present invention.
Fig. 9 is a graph showing the change of reflection coefficient (|s 11 |) with frequency when the antenna of the present invention implements circular polarization side emission.
Fig. 10 is a radiation pattern at a frequency of 1.62GHz when the antenna of the present invention implements circularly polarized side-firing.
Fig. 11 is a schematic diagram of a circular polarization side-firing time axis ratio curve of the antenna according to the present invention.
Fig. 12 is a graph of reflection coefficient (|s 11 |) as a function of frequency for an antenna of the present invention implementing horizontal omnidirectional radiation.
Fig. 13 is a radiation pattern at a frequency of 1.62GHz when the antenna of the present invention achieves horizontal omnidirectional radiation.
Fig. 14 is a schematic diagram showing radiation efficiency of the antenna of the present invention in two states of circular polarized side-fire and horizontal omnidirectional radiation.
1-A first dielectric substrate; the coaxial cable comprises a 2-second dielectric substrate, a 3-first radiating metal patch, a 4-T connecting metal sheet, a 5-second radiating metal patch, a 6-T radiating patch, a 7-first PIN diode, an 8-second PIN diode, a 9-third PIN diode, a 10-coaxial feed, a 111-first paranoid patch, a 112-second paranoid patch, a 113-third paranoid patch, a 114-fourth paranoid patch, a 115-fifth paranoid patch, a 301-first rectangular strip, a 302-second rectangular strip, a 303-first fan ring strip, a 304-second fan ring strip, a 305-rectangular ring groove, a 306-circular hole, a 307-first metal post, a 308-second metal post, a 401-sixth rectangular strip, a 402-seventh rectangular strip, a 403-third metal post, a 501-first T-shaped patch, a 502-second T-shaped patch, a 503-third T-shaped patch, a 504-fourth T-shaped patch, a 505-connecting strip, a 601-fifth rectangular strip, a 602-fifth rectangular strip, a 304-second fan ring strip, a 304-fourth rectangular strip, a 5011-fourth rectangular strip, a 5022-fourth rectangular strip.
Detailed Description
The invention is further described below with reference to the drawings and examples.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In describing embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
The multi-oscillator small electric antenna with reconfigurable side-emission and horizontal omni-directional patterns as shown in fig. 1-5 comprises a first dielectric substrate 1 and a second dielectric substrate 2 which are arranged in parallel;
the upper surface of the first dielectric substrate 1 is provided with a first radiation metal patch 3, the lower surface of the first dielectric substrate 1 is provided with a T-shaped connection metal sheet 4, and the lower surface of the second dielectric substrate 2 is provided with a second radiation metal patch 5 and a T-shaped radiation patch 6;
The first radiating metal patches 3, the T-shaped connecting metal patches 4, the first radiating metal patches 3, the second radiating metal patches 5 and the T-shaped connecting metal patches 4 are connected with the second radiating metal patches 5 through metal columns;
The first PIN diode 7 is loaded on the first radiation metal patch 3, the second PIN diode 8 is loaded on the second radiation metal patch 5, the second radiation metal patch 5 is connected with the T-shaped radiation patch 6 through the third PIN diode 9, and the far-field pattern switching of the side emission and the horizontal omnidirectional radiation is realized by switching the on-off states of the first PIN diode 7, the second PIN diode 8 and the third PIN diode 9.
As an embodiment of the present invention, the first radiating metal patch 3 includes a first rectangular strip 301 and a second rectangular strip 302 disposed orthogonally to each other, both ends of the first rectangular strip 301 are connected to a first fan-ring strip 303, and both ends of the second rectangular strip 302 are connected to a second fan-ring strip 304;
The first radiating metal patch 3 is further provided with a rectangular ring groove 305 and two circular holes 306 with central symmetry, two ends of the first PIN diode 7 are respectively connected with patches on two sides of the rectangular ring groove 305, the first radiating metal patch 3 is connected with the second radiating metal patch 5 through three first metal posts 307, and the first radiating metal patch 3 is connected with the T-shaped connecting metal sheet 4 through one second metal post 308.
As an embodiment of the present invention, the T-shaped connection metal sheet 4 includes a sixth rectangular strip 401 and a seventh rectangular strip 402 which are disposed perpendicular to each other;
Two ends of the sixth rectangular strip 401 are respectively connected with the second radiation patch 5 through a third metal column 403, and the middle part of the sixth rectangular strip 401 is connected with the first radiation metal patch 3 through a second metal column 308;
two third metal posts 403 are located directly below the two circular holes 306, respectively.
As an embodiment of the present invention, the second radiating metal patch 5 includes a first T-shaped patch 501, a second T-shaped patch 502, a third T-shaped patch 503, and a fourth T-shaped patch 504 which are sequentially rotated by 90 ° along the center of the second dielectric substrate 2;
The dimensions of the first T-shaped patch 501 and the third T-shaped patch 503 are the same, the dimensions of the second T-shaped patch 502 and the fourth T-shaped patch 504 are the same, the first T-shaped patch 501 and the second T-shaped patch 502 are connected with each other through a connecting strip 505, and the first T-shaped patch 501 and the second T-shaped patch 502 which are connected with each other are connected with the first radiation patch 3 through three first metal posts 406;
the second T-shaped patch 502 and the fourth T-shaped patch 504 are connected to the T-shaped connection metal sheet 4 through a third metal post 403, respectively.
As an embodiment of the present invention, the first T-shaped patch 501 and the third T-shaped patch 503 each include a third rectangular strip 5011, and a third fan-ring strip 5012 connected to an end of the third rectangular strip 5011 remote from the center of the second dielectric substrate 2;
The second T-shaped patch 502 and the fourth T-shaped patch 504 each include a fourth rectangular strip 5021 and a fourth fan-ring strip 5022 connected to one end of the fourth rectangular strip 5021 far from the center of the second dielectric substrate 2;
Rectangular grooves 5023 are formed in the fourth rectangular strip 5021 of the second T-shaped patch 502, and two ends of the second PIN diode 8 are connected with patches on two sides of the rectangular grooves 5023 respectively.
As an embodiment of the present invention, the T-shaped radiation patch 6 includes a fifth rectangular strip 601, and a fifth fan-ring strip 602 connected to an end of the fifth rectangular strip 601 remote from the center of the second dielectric substrate 2;
The fifth rectangular strip 601 is connected with the first T-shaped patch 501 and the second T-shaped patch 502 through the third PIN diode 9 near one end of the center of the second dielectric substrate 2.
As an embodiment of the present invention, the coaxial cable feeding device further comprises a coaxial cable feeding 10, wherein an inner conductor of the coaxial cable feeding 10 is connected with the first radiation patch 3, and an outer conductor of the coaxial cable feeding 10 is connected with the first T-shaped patch 501 and the second T-shaped patch 502;
The first radiating patch 3, the T-shaped connecting metal sheet 4, the first T-shaped patch 501, the T-shaped radiating patch 6, and the fourth fan-loop strip 5021 of the second T-shaped patch 502 are respectively connected with a paranoid inductance through the first paranoid patch 111, the second paranoid patch 112, the third paranoid patch 113, the fourth paranoid patch 114, and the fifth paranoid patch 115;
The first dielectric substrate 1 and the second dielectric substrate 2 are circular dielectric substrates.
In the embodiment of the invention, when the first PIN diode 7 and the second PIN diode 8 are in an on state and the third PIN diode 9 is in an off state, an odd mode of the antenna is excited so as to realize a forward radiation mode, when the first PIN diode 7 and the second PIN diode 8 are in an off state and the third PIN diode 9 is in an on state, an even mode of the antenna is excited so as to realize a horizontal omnidirectional radiation mode, the first PIN diode 7, the second PIN diode 8 and the third PIN diode 9 are all PIN diodes with the model of Bar50-02V, and the coaxial line feed 10 is a 50 ohm coaxial line feed.
According to the above structure, the setting parameters are as follows:
The radius R 1 of the first medium substrate 1 is 29mm, the thickness h 1 of the first medium substrate 1 is 0.254mm, and the thickness of the first medium substrate 1 is 0.254mm;
The distance h 2 between the first medium substrate 1 and the second medium substrate 2 is 8mm;
The length L 1 of the first paranoid patch 111 is 0.8mm, the length L 2 of the second paranoid patch 112 is 1mm, the length L 3 of the third paranoid patch 113 is 1.2mm, the length L 4 of the fourth paranoid patch 114 is 1.2mm, and the length L 3 of the fifth paranoid patch 115 is 1.2mm;
The width of the first rectangular strip 301 is the same as the width of the second rectangular strip 302, and the width W 1 is 8mm;
the inner radius and the outer radius of the first fan ring strip 303 and the second fan ring strip 303 are the same, the outer radius R 2 is 29mm, and the inner radius R 3 is 25mm;
The angle theta 1 of the first fan ring strip 303 is 88 degrees, and the angle theta 2 of the second fan ring strip 303 is 78 degrees;
the width W 2 of the rectangular ring groove 305 is 0.2mm, and the diameter phi 1 of the circular hole 306 is 0.7mm;
The length L 6 of the sixth rectangular strip 401 is 8mm, the width of each of the sixth rectangular strip 401 and the seventh rectangular strip 402 is W 3, and the width W 3 thereof is 1.5mm;
The diameter phi 2 of the first metal column 406 is 0.5mm, and the diameter phi 3 of the third metal column 403 is 0.5mm;
The spacing g 1 between adjacent first metal columns 406 is 2.8mm, the spacing g 2 between the first metal columns 406 and the third metal columns 403 is 6mm, and the spacing g 3 between the centers of the first metal columns 406 and the second dielectric substrate 2 is 3mm;
the third rectangular strip 5011 and the fourth rectangular strip 5021 have the same width, and the width W 4 of each of the third rectangular strip 5011 and the fourth rectangular strip 5021 is 8mm;
The inner radius R 4 of the third fanning strip 5012 is 24mm, the outer radius R 5 of the third fanning strip 5012 is 28mm, and the angle θ 3 of the third fanning strip 5012 is 76 °;
The inner radius R 6 of the fourth fan ring strip 5022 is 20.5mm, the outer radius R 7 of the fourth fan ring strip 5022 is 24.5mm, and the angle θ 4 of the fourth fan ring strip 5022 is 71 °;
The spacing g 4 between the third T-shaped patch 503, the fourth T-shaped patch 504 and the connecting strip 505 is 0.25mm;
The width W 5 of the fifth rectangular strip 601 is 8mm;
The inner radius R 8 of the fifth fan ring strip 602 is 16.9mm, the outer radius R 9 of the fourth fan ring strip 5022 is 19.5mm, and the angle θ 5 of the fifth fan ring strip 602 is 16 °.
And according to the parameters, carrying out simulation analysis on the whole structure of the antenna in electromagnetic simulation software HFSS. When the first PIN diode 7 and the second PIN diode 8 are in an on state and the third PIN diode 9 is in an off state, the circularly polarized side emission is realized by the directional diagram reconfigurable antenna. As shown in fig. 9, 10 and 11, the reflection coefficient is lower than-10 d B in the frequency range of 1.61-1.64 GHz, the axial ratio is lower than 2dBi at the central frequency of 1.62GHz of two modes of operation, the maximum achievable gain is 3.9dBi, the radiation efficiency is more than 75%, and the circularly polarized radiation performance is good.
When the first PIN diode 7 and the second PIN diode 8 are in an off state and the third PIN diode 9 is in an on state, the horizontal omnidirectional radiation is realized by the directional pattern reconfigurable antenna. As shown in fig. 12 and 13, the reflection coefficient is lower than-10 d B in the frequency range of 1.61-1.63 GHz, the maximum achievable gain is 1.7dBi at the center frequency of 1.62GHz of the two modes of operation, the radiation efficiency is more than 94%, and the radiation performance is good.
As shown in fig. 14, the solid line in the figure is the passband radiation efficiency curve of the horizontal omnidirectional radiation mode, and the broken line in the figure is the passband radiation efficiency curve of the circular polarized side-fire mode.
In summary, the invention has the characteristics of small electricity and low profile, can realize the switching of the horizontal omnidirectional radiation and the side-emission direction diagram by only switching on and off three PIN diodes under the condition of using one feed port, is accompanied with the conversion of the vertical linear polarization and the circular polarization state, and has good radiation performance.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present invention without departing from the spirit and scope of the present invention, and any modifications and equivalents are intended to be included in the scope of the claims of the present invention.
Claims (5)
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083357A (en) * | 2007-07-11 | 2007-12-05 | 南京大学 | Omnidirectional radiative microstrip aerial |
| CN110611163A (en) * | 2019-09-19 | 2019-12-24 | 西北工业大学 | A Frequency Reconfigurable Patch Antenna with Stable Radiation Performance |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7075485B2 (en) * | 2003-11-24 | 2006-07-11 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Low cost multi-beam, multi-band and multi-diversity antenna systems and methods for wireless communications |
| CN112436269B (en) * | 2020-11-16 | 2022-07-05 | 重庆大学 | A Huygens-sourced small antenna with reconfigurable frequency-agile pattern |
| CN113745837B (en) * | 2021-09-13 | 2024-04-19 | 重庆大学 | Omnidirectional, vertical polarization and electric small filter antenna |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083357A (en) * | 2007-07-11 | 2007-12-05 | 南京大学 | Omnidirectional radiative microstrip aerial |
| CN110611163A (en) * | 2019-09-19 | 2019-12-24 | 西北工业大学 | A Frequency Reconfigurable Patch Antenna with Stable Radiation Performance |
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