CN103730736A - Circularly polarized high-gain and low-profile resonant antenna - Google Patents
Circularly polarized high-gain and low-profile resonant antenna Download PDFInfo
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- CN103730736A CN103730736A CN201410005744.2A CN201410005744A CN103730736A CN 103730736 A CN103730736 A CN 103730736A CN 201410005744 A CN201410005744 A CN 201410005744A CN 103730736 A CN103730736 A CN 103730736A
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Abstract
A circularly polarized high-gain and low-profile resonant antenna comprises a resonant cavity and a linear polarization feed source which is located in the resonant cavity; the resonant cavity comprises a metal plate and a dielectric substrate which are parallel to each other; a plurality of cross gaps are cyclically formed in two orthogonal directions of the metal plate to form the partially reflecting surface; a plurality of rectangular metal patches are cyclically arranged in two orthogonal directions of the upper surface of the dielectric substrate which is opposite to the metal plate to form an artificial magnetic conductor; the lower surface of the dielectric substrate is provided with a ground plate; the metal plate, the dielectric substrate and the ground plate are fixedly connected through fasteners. According to the circularly polarized high-gain and low-profile resonant antenna, the problem that the antenna performance is affected by the feed complexity and the mutual coupling between units due to the feed network and unit array arrangement mode of the existing high-gain circularly polarized antenna is solved.
Description
Technical field
The present invention relates to a kind of high-gain aerial, relate in particular to a kind of low section resonant antenna of high-gain of circular polarization.
Background technology
The field such as modern radar, satellite communication need to be used the circular polarized antenna of higher gain conventionally.Conventionally need to adopt feeding network to realize amplitude and the phase condition of circular polarization.On the other hand, conventionally adopt the mode of unit group battle array in order to realize higher gain, the problem of therefore bringing is mutual coupling between feed complexity and the unit impact on antenna performance.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of low section resonant antenna of high-gain of circular polarization, solve the mode that existing high-gain circular polarized antenna adopts feeding network and unit group battle array, brought the problem of the mutual coupling antenna performance between feed complexity and unit.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of low section resonant antenna of high-gain of circular polarization, comprise resonant cavity and be arranged in the linear polarization feed of resonant cavity, described resonant cavity comprises the metallic plate and the medium substrate that are arranged in parallel, on two orthogonal directions of metallic plate, the cycle arranges some crosss gap component part reflecting surface, on two orthogonal directions of the medium substrate upper surface relative with metallic plate, the cycle arranges some rectangular metal pasters formation artificial magnetic conductors, lower surface at medium substrate arranges ground plate, and described metallic plate, medium substrate and ground plate are connected and fixed by securing member.
The Cycle Length of the cross gap of described component part reflecting surface on two orthogonal directions equates; The length in two orthogonal gaps in described formation cross gap is unequal, and width equates.
Not etc., the Cycle Length of rectangular metal paster short side direction is not less than the Cycle Length of long side direction to the Cycle Length of the rectangular metal paster of described formation artificial magnetic conductor on two orthogonal directions.
The long limit of the polarised direction of described linear polarization feed and rectangular metal paster or short side direction angle at 45 °.
Distance between described ground plate and part reflecting surface meets d=(1/4+n/2) λ
0condition, wherein λ
0centered by the electromagnetic free space wavelength of frequency, n=0,1,2....
Beneficial effect of the present invention: 1, the present invention has exempted the feeding network of conventional circular polarization antenna compared with existing circular polarized antenna, and longitudinal size is little, and structure is simpler, 2, the present invention forms resonant cavity by part reflecting surface and the artificial magnetic conductor parallel with part reflecting surface, utilizes resonance characteristic to make not need to adopt array structure, and gain can be significantly improved, 3, the long limit of the polarised direction of linear polarization feed of the present invention and rectangular metal paster or short side direction are in angle of 45 degrees, it is the electromagnetic wave that the electromagnetic wave of linear polarization feed radiation always can be decomposed into two polarization orthogonal, its direction is parallel to respectively long limit and the minor face of rectangular metal paster, together with the artificial magnetic conductor that the part reflecting surface consisting of cross gap forms with rectangular metal paster, form resonant cavity, both provide respectively reflected phase will suitable between the electromagnetic wave of two polarization orthogonal poor, can be by regulating cross metal slit to carry out the reflected phase will frequency response on adjusting portion sub reflector surface along the length on two-dimensional direction, by regulating the long limit of rectangular metal paster and bond length to regulate the reflected phase will frequency response of artificial magnetic conductor, realization is transformed to circularly polarised wave by line polarization wave, realize low section and high-gain simultaneously.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is end view of the present invention.
Fig. 3 is the structural representation of part reflecting surface of the present invention.
Fig. 4 is the structural representation of part reflecting surface periodic unit of the present invention.
Fig. 5 is the structural representation of artificial magnetic conductor of the present invention.
Fig. 6 is the structural representation of artificial magnetic conductor periodic unit of the present invention.
Fig. 7 is the position view of linear polarization feed.
Fig. 8 is reflection coefficient chart of the present invention.
Fig. 9 is axial ratio frequency response curve figure of the present invention.
Figure 10 is gain frequency response curve figure of the present invention.
Figure 11 is horizontal radiation pattern of the present invention.
Figure 12 is elevation radiation patytern of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As Fig. 1, 2, shown in 3 and 5, a kind of low section resonant antenna of high-gain of circular polarization, comprise resonant cavity 2 and be arranged in the linear polarization feed 1 of resonant cavity 2, described resonant cavity 2 comprises the metallic plate 22 and the medium substrate 21 that are arranged in parallel, on two orthogonal directions of metallic plate 22, the cycle arranges some crosss gap 23 component part reflecting surfaces, on two orthogonal directions of the medium substrate relative with metallic plate 22 21 upper surfaces, the cycle arranges some rectangular metal pasters 24 and forms artificial magnetic conductor, at the lower surface of medium substrate 21, ground plate 25 is set, distance between ground plate 25 and part reflecting surface meets d=(1/4+n/2) λ
0condition, wherein λ
0centered by the electromagnetic free space wavelength of frequency, n=0,1,2..., described metallic plate 22, medium substrate 21 and ground plate 25 are connected and fixed by securing member 26.
As shown in Figure 4, the Cycle Length of the cross gap 23 of described component part reflecting surface on two orthogonal directions equates, is P, and the length that forms two orthogonal gaps in cross gap 23 is respectively S
xand S
y, width is S
w, and gap length is unequal.
As shown in Figure 6, the Cycle Length of the rectangular metal paster 24 of described formation artificial magnetic conductor on two orthogonal directions not etc., the Cycle Length P of rectangular metal paster 24 short side directions
ybe less than the Cycle Length P of long side direction
x, wherein P
xcentered by 0.2～0.3 times of the electromagnetic free space wavelength of frequency, the long limit of rectangular metal paster 24 and the length of minor face are respectively l
xand l
y.
The polarised direction of the linear polarization feed 1 of above-described resonant antenna and the long limit of rectangular metal paster 24 or short side direction angle at 45 °, it is the electromagnetic wave that the electromagnetic wave of linear polarization feed radiation always can be decomposed into two polarization orthogonal, its direction is parallel to respectively long limit and the minor face of rectangular metal paster 24, together with the artificial magnetic conductor that the part reflecting surface consisting of cross gap 23 forms with rectangular metal paster 24, form resonant cavity 2, both provide respectively reflected phase will suitable between the electromagnetic wave of two polarization orthogonal poor, can be by regulating cross gap 23 to carry out the reflected phase will frequency response on adjusting portion sub reflector surface along the length on two-dimensional direction, by regulating the long limit of rectangular metal paster 24 and bond length to regulate the reflected phase will frequency response of artificial magnetic conductor, realization is transformed to circularly polarised wave by line polarization wave, realize low section and high-gain simultaneously.
The design process of each structural parameters for convenience of explanation, given structural parameters: the l of rectangular metal paster 24
x=4mm, l
y=2.5mm, along the Cycle Length P of long side direction
x=5mm, along the Cycle Length P of short side direction
y=3.6mm, the Cycle Length P=11mm in cross gap 23, S
x=10.5mm, S
y=7.2mm, stitches wide S
w=2mm, centre frequency f=14GHz, the distance 5.5mm between ground plate 25 and part reflecting surface, meets:
wherein λ
0centered by the electromagnetic free space wavelength of frequency.Select simulation software as high frequency simulation softwares such as the Microwave Studio CST of the HFSS of Ansoft company, CST company, analog simulation obtains on computers: the horizontal radiation pattern shown in gain frequency response curve figure, the Figure 11 shown in axial ratio frequency response curve figure, the Figure 10 shown in reflection coefficient chart, Fig. 9 as shown in Figure 8, the elevation radiation patytern shown in Figure 12.Change structure parameter under the tangible specified criteria of curve more than obtaining, obtains, if also can obtain similar curve.
For ease of circular polarization linear polarization feed 1 of the present invention, can be formed by microband paste or its modification structures, the linear polarization feed 1 of this structure is fitted in the upper surface of the medium substrate relative with metallic plate 22 21, remaining place of medium substrate 21 upper surfaces is along long limit and the some rectangular metal pasters 24 of short side direction periodic arrangement of rectangle, as shown in Figure 7.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the low section resonant antenna of the high-gain of a circular polarization, it is characterized in that: comprise resonant cavity (2) and be arranged in the linear polarization feed (1) of resonant cavity (2), described resonant cavity (2) comprises the metallic plate (22) and the medium substrate (21) that are arranged in parallel, on two orthogonal directions of metallic plate (22), the cycle arranges some crosss gap (23) component part reflecting surface, on two orthogonal directions of medium substrate (21) upper surface relative with metallic plate (22), the cycle arranges some rectangular metal pasters (24) formation artificial magnetic conductor, at the lower surface of medium substrate (21), ground plate (25) is set, described metallic plate (22), medium substrate (21) and ground plate (25) are connected and fixed by securing member (26).
2. the low section resonant antenna of the high-gain of a kind of circular polarization according to claim 1, is characterized in that: the Cycle Length of the cross gap (23) of described component part reflecting surface on two orthogonal directions equates.
3. the low section resonant antenna of the high-gain of a kind of circular polarization according to claim 2, is characterized in that: the length in two orthogonal gaps in described formation cross gap (23) is unequal, and width equates.
4. the low section resonant antenna of the high-gain of a kind of circular polarization according to claim 1, it is characterized in that: not etc., the Cycle Length of rectangular metal paster (24) short side direction is not less than the Cycle Length of long side direction to the Cycle Length of the rectangular metal paster (24) of described formation artificial magnetic conductor on two orthogonal directions.
5. according to the low section resonant antenna of the high-gain of a kind of circular polarization described in claim 1 or 4, it is characterized in that: the long limit of the polarised direction of described linear polarization feed (1) and rectangular metal paster (24) or short side direction angle at 45 °.
6. the low section resonant antenna of the high-gain of a kind of circular polarization according to claim 1, is characterized in that: the distance between described ground plate (25) and part reflecting surface meets d=(1/4+n/2) λ
0condition, wherein λ
0centered by the electromagnetic free space wavelength of frequency, n=0,1,2....
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Cited By (17)
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|---|---|---|---|---|
| CN104124523A (en) * | 2014-07-24 | 2014-10-29 | 南京理工大学 | Stub loaded artificial magnetic conductor based high gain microstrip antenna |
| CN104836033A (en) * | 2015-04-17 | 2015-08-12 | 中国电子科技集团公司第四十一研究所 | Artificial magnetic conductor reflection chamber for broadband plane helix antenna |
| CN105428815A (en) * | 2015-12-29 | 2016-03-23 | 南京逸然电子科技有限公司 | All-metal broadband high-gain low-profile resonant antenna |
| CN106876896A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Circular polarized antenna |
| CN106876972A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Sub-wavelength resonance cavity circularly polarized antenna |
| CN106898868A (en) * | 2017-02-28 | 2017-06-27 | 山东大学 | Large scale sub-wavelength cavity antenna based on magnetic single-negative material |
| CN107069201A (en) * | 2017-02-28 | 2017-08-18 | 山东大学 | Sub-wavelength cavity antenna based on magnetic single-negative material |
| CN110718770A (en) * | 2019-09-29 | 2020-01-21 | 山西大学 | Full-polarization reconfigurable MIMO antenna |
| CN110808461A (en) * | 2019-11-22 | 2020-02-18 | 东南大学 | Low-profile holographic imaging antenna based on Fabry-Perot resonant cavity type structure |
| CN111043955A (en) * | 2019-09-23 | 2020-04-21 | 上海航天测控通信研究所 | Laminated quasi-optical feed network structure and adjusting method thereof |
| CN111630721A (en) * | 2018-01-22 | 2020-09-04 | 京瓷株式会社 | Repeater |
| CN112490689A (en) * | 2020-11-23 | 2021-03-12 | 重庆邮电大学 | C-band resonator antenna constructed by artificial magnetic conductor structure |
| CN112585814A (en) * | 2018-08-24 | 2021-03-30 | 京瓷株式会社 | Structure, antenna, wireless communication module, and wireless communication device |
| CN113113770A (en) * | 2021-04-30 | 2021-07-13 | 广州智讯通信系统有限公司 | Antenna adopting polarization sensitive linear-circular polarization converter |
| CN113659331A (en) * | 2021-08-16 | 2021-11-16 | 东南大学 | Low-profile high-gain resonant antenna based on solar cell |
| CN114374098A (en) * | 2021-12-23 | 2022-04-19 | 西安电子科技大学 | Cavity monopole subarray antenna with adjustable broadband low-profile AMC wave beam |
| CN115101914A (en) * | 2022-06-30 | 2022-09-23 | 中国电子科技集团公司第三十八研究所 | Cavity antenna array with low profile and flexible caliber and resonant cavity thereof |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124523A (en) * | 2014-07-24 | 2014-10-29 | 南京理工大学 | Stub loaded artificial magnetic conductor based high gain microstrip antenna |
| CN104836033A (en) * | 2015-04-17 | 2015-08-12 | 中国电子科技集团公司第四十一研究所 | Artificial magnetic conductor reflection chamber for broadband plane helix antenna |
| CN105428815A (en) * | 2015-12-29 | 2016-03-23 | 南京逸然电子科技有限公司 | All-metal broadband high-gain low-profile resonant antenna |
| CN105428815B (en) * | 2015-12-29 | 2018-11-06 | 南京逸然电子科技有限公司 | A kind of wide band high-gain low-profile resonant antenna of all-metal |
| CN106876896A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Circular polarized antenna |
| CN106876972A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Sub-wavelength resonance cavity circularly polarized antenna |
| CN106898868A (en) * | 2017-02-28 | 2017-06-27 | 山东大学 | Large scale sub-wavelength cavity antenna based on magnetic single-negative material |
| CN107069201A (en) * | 2017-02-28 | 2017-08-18 | 山东大学 | Sub-wavelength cavity antenna based on magnetic single-negative material |
| CN111630721A (en) * | 2018-01-22 | 2020-09-04 | 京瓷株式会社 | Repeater |
| US11342658B2 (en) | 2018-01-22 | 2022-05-24 | Kyocera Corporation | Repeater |
| CN112585814A (en) * | 2018-08-24 | 2021-03-30 | 京瓷株式会社 | Structure, antenna, wireless communication module, and wireless communication device |
| CN111043955A (en) * | 2019-09-23 | 2020-04-21 | 上海航天测控通信研究所 | Laminated quasi-optical feed network structure and adjusting method thereof |
| CN111043955B (en) * | 2019-09-23 | 2021-08-10 | 上海航天测控通信研究所 | Laminated quasi-optical feed network structure and adjusting method thereof |
| CN110718770A (en) * | 2019-09-29 | 2020-01-21 | 山西大学 | Full-polarization reconfigurable MIMO antenna |
| CN110808461A (en) * | 2019-11-22 | 2020-02-18 | 东南大学 | Low-profile holographic imaging antenna based on Fabry-Perot resonant cavity type structure |
| CN112490689A (en) * | 2020-11-23 | 2021-03-12 | 重庆邮电大学 | C-band resonator antenna constructed by artificial magnetic conductor structure |
| CN113113770A (en) * | 2021-04-30 | 2021-07-13 | 广州智讯通信系统有限公司 | Antenna adopting polarization sensitive linear-circular polarization converter |
| CN113113770B (en) * | 2021-04-30 | 2024-03-19 | 广州智讯通信系统有限公司 | Antenna adopting polarization sensitive molded line-circular polarization converter |
| CN113659331A (en) * | 2021-08-16 | 2021-11-16 | 东南大学 | Low-profile high-gain resonant antenna based on solar cell |
| CN113659331B (en) * | 2021-08-16 | 2022-07-26 | 东南大学 | Low-profile high-gain resonant antenna based on solar cell |
| CN114374098A (en) * | 2021-12-23 | 2022-04-19 | 西安电子科技大学 | Cavity monopole subarray antenna with adjustable broadband low-profile AMC wave beam |
| CN114374098B (en) * | 2021-12-23 | 2022-12-06 | 西安电子科技大学 | Cavity monopole subarray antenna with adjustable broadband low-profile AMC wave beam |
| CN115101914A (en) * | 2022-06-30 | 2022-09-23 | 中国电子科技集团公司第三十八研究所 | Cavity antenna array with low profile and flexible caliber and resonant cavity thereof |
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Application publication date: 20140416 Assignee: CHANGSHU HONGBO COMMUNICATION TECHNOLOGY CO., LTD. Assignor: Southeast University Contract record no.: 2017320000053 Denomination of invention: Circularly polarized high-gain and low-profile resonant antenna Granted publication date: 20170208 License type: Exclusive License Record date: 20170310 |
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