CN104681973A - Microstrip patch antenna based on photonic crystal structure - Google Patents
Microstrip patch antenna based on photonic crystal structure Download PDFInfo
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- CN104681973A CN104681973A CN201510103419.4A CN201510103419A CN104681973A CN 104681973 A CN104681973 A CN 104681973A CN 201510103419 A CN201510103419 A CN 201510103419A CN 104681973 A CN104681973 A CN 104681973A
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Abstract
The invention discloses a microstrip patch antenna based on a photonic crystal structure. The microstrip patch antenna comprises a dielectric substrate, wherein a metal grounding layer is arranged on the back side of the dielectric substrate; radiation branch nodes are arranged in the center of the front side of the dielectric substrate; the radiation branch nodes are of a four-helical structure in mirror symmetry; a photonic crystal forbidden band layer surrounds the radiation branch nodes; the photonic crystal forbidden band layer consists of a plurality of metal patches which are arranged in a periodic manner; the centers of the metal patches are connected with the metal grounding layer through conductive through holes; the metal grounding layer is connected with the radiation branch nodes through feed ports; signal transmission between the end parts of the feed ports and the outside can be achieved through SMA connectors. As the photonic crystal forbidden band layer is introduced around the radiation branch nodes, the defects that a microstrip patch antenna is low in gain and narrow in bandwidth are effectively solved, and moreover as the photonic crystal forbidden band layer is in certain distance from the radiation branch nodes, the mutual coupling is reduced, and the working property of the antenna is effectively ensured; in addition, due to the structure of the radiation branch nodes, current paths can be effectively increased, and the antenna can be minimized.
Description
Technical field
The invention belongs to microstrip antenna technical field, be specifically related to a kind of micro-strip paster antenna based on photon crystal structure.
Background technology
This concept of photonic crystal was suggested the eighties in last century, and its maximum characteristic has forbidden band characteristic exactly, and namely within the scope of forbidden band, inhibited to the surface wave propagated on its surface, it does not support the surperficial wave propagation of a certain frequency range in other words.Microstrip antenna has little, lightweight, the low section of volume, low cost because of it, is applicable to and the plurality of advantages such as circuit is integrated, be widely used in wireless communication system, played its important function in various fields such as mobile communication, satellite communication and Aero-Space.But some shortcomings of microstrip antenna itself also limit the performance of its larger performance simultaneously, because microstrip antenna belongs to resonant aerial, its working band relative narrower; The surface wave encouraged in addition and the existence of dielectric loss make the most energy of antenna all consume thus make the gain of microstrip antenna lower, and radiation efficiency is not high.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of micro-strip paster antenna based on photon crystal structure, and this antenna efficiency solves the shortcoming that microstrip antenna gain is low and broadband is narrow, and has good circuit and radiance, is conducive to the miniaturization realizing antenna.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of micro-strip paster antenna based on photon crystal structure, comprise medium substrate, the back side of medium substrate is provided with metal ground plane, the central authorities in medium substrate front are provided with radiation minor matters, radiation minor matters are four helical structures of specular, and its surrounding is surrounded with photonic crystal band layer, photonic crystal band layer is made up of the metal patch of some periodic arrangement, the central authorities of metal patch are connected with metal ground plane by conductive via, metal ground plane is connected with radiation minor matters by feed port, and Signal transmissions is carried out by sub-miniature A connector and the external world in the end of feed port.
Described metal patch comprises central part, the central authorities of central part and conductive via conducting, and the edge of central part is provided with many clockwise spaced L shape first metal micro-strip line and the second metal micro-strip line.
Described photonic crystal band layer flushes setting with radiation minor matters.
Described medium substrate is FR4 material, is of a size of 60mm*60mm*2mm; Radiation minor matters are of a size of 26.6mm*26.6mm; Metal patch is of a size of 7 mm*7mm, wherein: the width of the first metal micro-strip line and the second metal micro-strip line is 0.7mm, the length of the first metal micro-strip line is 3.6mm, and the distance between the first metal micro-strip line and the second metal micro-strip line long portion is 0.3mm, distance between short portion is 0.7mm.
After described photonic crystal band layer and radiation minor matters adopt bite shaping, jointly do the heavy tin process in surface with conductive via and feed port.
Photosensitive green oil film is coated with outside described metal ground plane.
Compared with prior art, advantage of the present invention is: the present invention introduces photonic crystal band layer around radiation minor matters, efficiently solves the shortcoming that microstrip antenna gain is low and broadband is narrow, and between the two at a certain distance, reduce mutual coupling each other, effectively ensure that the operating characteristic of antenna; In addition, the structure of radiation minor matters effectively can increase current path, is conducive to the miniaturization realizing antenna.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention;
Fig. 2 is sectional structure schematic diagram of the present invention;
Fig. 3 is the structural representation of metal patch in the present invention;
Fig. 4 is the structural representation contrasting antenna in the present invention;
Fig. 5 is the present invention and the return loss comparison diagram contrasting antenna;
Fig. 6 is the present invention and the radiated far field district 3D comparison diagram contrasting antenna, wherein: Fig. 6-1 is that the radiated far field district 3D of contrast antenna schemes; Fig. 6-2 is that radiated far field district 3D of the present invention schemes.
Embodiment:
As shown in Figure 1 to Figure 3, a kind of micro-strip paster antenna based on photon crystal structure, comprise medium substrate 1, the back side of medium substrate 1 is provided with metal ground plane 4, the central authorities in medium substrate 1 front are provided with radiation minor matters 2, radiation minor matters 2 are four helical structures of specular, and its surrounding is surrounded with photonic crystal band layer, photonic crystal band layer flushes setting with radiation minor matters 2, photonic crystal band layer is made up of totally the metal patch 5 of 2 row (column), 48 periodic arrangement, metal patch 5 comprises central part, the central authorities of central part are connected with metal ground plane 4 by conductive via 6, the edge of central part is provided with many clockwise spaced L shape first metal micro-strip line 51 and the second metal micro-strip line 52, metal ground plane 4 is connected with radiation minor matters 2 by feed port 3, the end of feed port 3 carries out Signal transmissions by sub-miniature A connector 31 with the external world.
In the present invention, medium substrate 1 is FR4 material, is of a size of 60mm*60mm*2mm; Radiation minor matters are of a size of 26.6mm*26.6mm; Metal patch 5 is of a size of 7 mm*7mm, wherein: the width w of the first metal micro-strip line 51 and the second metal micro-strip line 52 is 0.7mm, the length lx of the first metal micro-strip line 51 is 3.6mm, and the distance lw between the first metal micro-strip line 51 and the second metal micro-strip line 52 long portion is 0.3mm, distance sw between short portion is 0.7mm.
The present invention is when making, and each metal patch 5 and the radiation minor matters 2 of photonic crystal band layer adopt bite shaping, four helical structures of radiation minor matters 2 in specular, and compared with existing same specification microstrip antenna, size reduces 13.5%; The central authorities of each metal patch 5 and distributing point (apart from the radiation minor matters 2 center 5.4mm) place of radiation minor matters 2 adopt the mode of metallization via hole to form conductive via 6 and feed port 3, and do heavy tin process to the surface of metal patch 5, radiation minor matters 2, conductive via 6 and feed port 3; Be coated with photosensitive green oil film outside metal ground plane 4, to reach anti-welding, insulation object.
For giving prominence to circuit parameter performance of the present invention and radiation parameter performance further, design and produce contrast antenna, as shown in Figure 4, each metal patch 5 of the incomplete structure of this contrast antenna photonic crystal band layer and the conductive via 6 corresponding with metal patch 5, all the other and the present invention are consistent, but in order to impedance matching, in this contrast antenna, the feed position of radiation minor matters 2 is apart from 5.2mm place, its center, and this contrast antenna is substantially identical with the performance of existing same specification microstrip antenna:
As shown in Figure 5, horizontal dotted line represents return loss for-10dB, imaginary curve represents the return loss change of inventive antenna, the change of solid-line curve representative contrast antenna return loss, as can be seen from Figure, the centre frequency of contrast antenna is 4.5GHz, frequency bandwidth is 3.4%, and the centre frequency of inventive antenna slightly offsets, at 4.56GHz place, frequency bandwidth then becomes 4.5%, extends 1.1%; As in Figure 6-1, contrasting antenna is 4.21dB in operating frequency 4.5 GHz place maximum gain; And antenna of the present invention, as in fig. 6-2, be 5.55dB in 4.5 GHz place maximum gains, comparatively contrast antenna and add 1.34 dB.
As can be seen from the above, antenna of the present invention effectively improves gain and the bandwidth performance of existing microstrip antenna, decreases the size of antenna simultaneously to a certain extent, is conducive to the miniaturization realizing antenna.
Claims (6)
1. the micro-strip paster antenna based on photon crystal structure, it is characterized in that: comprise medium substrate, the back side of described medium substrate is provided with metal ground plane, the central authorities in described medium substrate front are provided with radiation minor matters, described radiation minor matters are four helical structures of specular, and its surrounding is surrounded with photonic crystal band layer, described photonic crystal band layer is made up of the metal patch of some periodic arrangement, the central authorities of described metal patch are connected with metal ground plane by conductive via, described metal ground plane is connected with radiation minor matters by feed port, Signal transmissions is carried out by sub-miniature A connector and the external world in the end of described feed port.
2. a kind of micro-strip paster antenna based on photon crystal structure according to claim 1, it is characterized in that: described metal patch comprises central part, the central authorities of described central part and conductive via conducting, the edge of described central part is provided with many clockwise spaced L shape first metal micro-strip line and the second metal micro-strip line.
3. a kind of micro-strip paster antenna based on photon crystal structure according to claim 1, is characterized in that: described photonic crystal band layer flushes setting with radiation minor matters.
4. a kind of micro-strip paster antenna based on photon crystal structure according to claim 1 and 2, is characterized in that: described medium substrate is FR4 material, is of a size of 60mm*60mm*2mm; Described radiation minor matters are of a size of 26.6mm*26.6mm; Described metal patch is of a size of 7 mm*7mm, wherein: the width of the first metal micro-strip line and the second metal micro-strip line is 0.7mm, the length of the first metal micro-strip line is 3.6mm, and the distance between the first metal micro-strip line and the second metal micro-strip line long portion is 0.3mm, distance between short portion is 0.7mm.
5. a kind of micro-strip paster antenna based on photon crystal structure according to claim 1, is characterized in that: after described photonic crystal band layer and radiation minor matters adopt bite shaping, jointly does the heavy tin process in surface with conductive via and feed port.
6. a kind of micro-strip paster antenna based on photon crystal structure according to claim 1, is characterized in that: be coated with photosensitive green oil film outside described metal ground plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510103419.4A CN104681973B (en) | 2015-03-10 | 2015-03-10 | A kind of micro-strip paster antenna based on photon crystal structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510103419.4A CN104681973B (en) | 2015-03-10 | 2015-03-10 | A kind of micro-strip paster antenna based on photon crystal structure |
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| CN104681973A true CN104681973A (en) | 2015-06-03 |
| CN104681973B CN104681973B (en) | 2017-12-22 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258414A (en) * | 2017-12-21 | 2018-07-06 | 惠州Tcl移动通信有限公司 | A kind of printed circuit board and terminal |
| CN108281797A (en) * | 2017-12-08 | 2018-07-13 | 西安电子科技大学 | High angle stability frequency-selective surfaces based on 2.5D braiding structures |
| CN108417979A (en) * | 2018-03-06 | 2018-08-17 | 厦门大学嘉庚学院 | The compound ultra-wide band antenna of strong anti-interference type |
| CN108832275A (en) * | 2018-07-24 | 2018-11-16 | 厦门大学嘉庚学院 | Four helical antenna of mobile digital TV induction arrays |
| CN109742539A (en) * | 2019-02-26 | 2019-05-10 | 深圳市卓睿通信技术有限公司 | A kind of paster antenna with broadband and filtering characteristic |
| CN110233340A (en) * | 2019-06-14 | 2019-09-13 | 大连海事大学 | A kind of dual-band and dual-polarization 5G antenna loading the rectangular patch that cracks |
| WO2020164498A1 (en) * | 2019-02-12 | 2020-08-20 | 西交利物浦大学 | Reflection member applied to antenna close to human body |
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| JP2009033324A (en) * | 2007-07-25 | 2009-02-12 | Nippon Antenna Co Ltd | Antenna |
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| CN202127094U (en) * | 2011-05-31 | 2012-01-25 | 深圳光启高等理工研究院 | Antenna and MIMO (Multiple Input Multiple Output) antenna comprising same |
| CN102769183A (en) * | 2012-07-13 | 2012-11-07 | 厦门大学 | Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system |
| CN104157982A (en) * | 2014-07-07 | 2014-11-19 | 华东交通大学 | Dual-polarized MIMO antenna based on EBG structure |
| CN204706629U (en) * | 2015-03-10 | 2015-10-14 | 中天宽带技术有限公司 | A kind of micro-strip paster antenna based on photon crystal structure |
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2015
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| JP2009033324A (en) * | 2007-07-25 | 2009-02-12 | Nippon Antenna Co Ltd | Antenna |
| KR20100041252A (en) * | 2008-10-13 | 2010-04-22 | 삼성전기주식회사 | Electro-magnetic bandgap structure |
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| CN102769183A (en) * | 2012-07-13 | 2012-11-07 | 厦门大学 | Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system |
| CN104157982A (en) * | 2014-07-07 | 2014-11-19 | 华东交通大学 | Dual-polarized MIMO antenna based on EBG structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281797A (en) * | 2017-12-08 | 2018-07-13 | 西安电子科技大学 | High angle stability frequency-selective surfaces based on 2.5D braiding structures |
| CN108281797B (en) * | 2017-12-08 | 2019-11-15 | 西安电子科技大学 | High angle stability frequency-selective surfaces based on 2.5D braiding structure |
| CN108258414A (en) * | 2017-12-21 | 2018-07-06 | 惠州Tcl移动通信有限公司 | A kind of printed circuit board and terminal |
| CN108258414B (en) * | 2017-12-21 | 2021-06-15 | 惠州Tcl移动通信有限公司 | Printed circuit board and terminal |
| US11589454B2 (en) | 2017-12-21 | 2023-02-21 | JRD Communication (Shenzhen) Ltd. | Printed circuit board and terminal |
| CN108417979A (en) * | 2018-03-06 | 2018-08-17 | 厦门大学嘉庚学院 | The compound ultra-wide band antenna of strong anti-interference type |
| CN108417979B (en) * | 2018-03-06 | 2023-06-16 | 厦门大学嘉庚学院 | Strong anti-interference composite ultra-wideband antenna |
| CN108832275A (en) * | 2018-07-24 | 2018-11-16 | 厦门大学嘉庚学院 | Four helical antenna of mobile digital TV induction arrays |
| CN108832275B (en) * | 2018-07-24 | 2023-08-01 | 厦门大学嘉庚学院 | Mobile digital television induction array four-spiral antenna |
| WO2020164498A1 (en) * | 2019-02-12 | 2020-08-20 | 西交利物浦大学 | Reflection member applied to antenna close to human body |
| CN109742539A (en) * | 2019-02-26 | 2019-05-10 | 深圳市卓睿通信技术有限公司 | A kind of paster antenna with broadband and filtering characteristic |
| CN110233340A (en) * | 2019-06-14 | 2019-09-13 | 大连海事大学 | A kind of dual-band and dual-polarization 5G antenna loading the rectangular patch that cracks |
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| CN104681973B (en) | 2017-12-22 |
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Effective date of registration: 20191115 Address after: 226400 Zhongtian Industrial Zone, Hekou Town, Rudong County, Jiangsu, Nantong Co-patentee after: Zhongtian Communication Technology Co., Ltd Patentee after: Zhongtian Broadband Technology Co., Ltd. Address before: 226400 Zhongtian Industrial Zone, Hekou Town, Rudong County, Jiangsu, Nantong Patentee before: Zhongtian Broadband Technology Co., Ltd. |