CN1925222B - Directional diagram reconstructable microstrip aerial having Koch form-dividing paster - Google Patents
Directional diagram reconstructable microstrip aerial having Koch form-dividing paster Download PDFInfo
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- CN1925222B CN1925222B CN200610021904A CN200610021904A CN1925222B CN 1925222 B CN1925222 B CN 1925222B CN 200610021904 A CN200610021904 A CN 200610021904A CN 200610021904 A CN200610021904 A CN 200610021904A CN 1925222 B CN1925222 B CN 1925222B
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Abstract
This invention relates to Koch sticking pad direction pattern re-form micro band antenna in electron technique, wherein, meal board 14 and three degree Koch distribution metal pad 15 are connected through co-axis; six short columns 17 pairs of symmetric small circles with detector 13 as center with its down end connected to metal board and top end connected to the sticking pad 15 through electron switch; metal board 14 is opened with six same beam 19 with symmetrically distributed with large circle and at least one electron switch 18.
Description
Technical field
The invention belongs to electronic technology field, relate to the directional diagram reconstructable aerial technology.
Background technology
Along with the develop rapidly of radio communication, the compact high performance directional diagram reconstructable aerial has more and more important meaning for the raising of overall communication system performance.The electronic noise that directional diagram reconstructable aerial can reduce communication system on the one hand disturbs, and improves the stability of system, can improve the communication efficiency of antenna on the other hand.But the problem that exists in existing directional diagram reconstructable aerial design has restricted its prospect of further applying again in market
Document " MEMS Reconfigurable Vee Antenna " (Microwave Symposium Digest, 1999IEEEMTT-S International, Volume:4,13-19 June) the reconfigurable antenna (see figure 1) of a kind of structure has been described, realized the change of antenna pattern.But the change of its structure is to adopt mechanical type, and reaction speed is slow.
Document " On the Gain of A Reconfigurable-Aperture Antenna " (IEEE Transactions On AntennaAnd Propagation, Vol:49, NO.10, October 2001) in tell about and how to adopt micro-electromechanical switch (MEMS) to realize re-constructing of antenna structure.But fail on a frequency, to realize the scanning (see figure 2) of antenna pattern.
Document " A Pattern Reconfigurable Microstrip Parasitic Array " (IEEE Transactions On AntennaAnd Propagation, Vol:52, NO.10, October2004) though can realize directional diagram scanning at a frequency, but the gain of directional diagram is limited, in the following (see figure 3) of 9dBi.
How to overcome the variety of issue that exists in the existing reconfigurable antenna technology for this reason, and the advantages of dissimilar antennas is got up to be still waiting further in depth to study.
Summary of the invention
In order on a frequency, to realize the high-gain of antenna, antenna pattern omnidirectional is scanned fast, the invention provides the directional diagram reconstructable microstrip antenna of the fractal paster of a kind of Koch of having, this antenna has high-gain, wide coverage, can realize characteristics such as directional diagram scanning at a frequency.
A kind of directional diagram reconstructable microstrip antenna with the fractal paster of Koch provided by the invention shown in Fig. 4,5, comprises coaxial line probe 13, the fractal metal patch 15 of metal floor 14, three rank Koch, 16, six identical short circuit posts 17 of dielectric substrate.The centre bore that coaxial line probe 13 passes metal floor 14 links to each other with the central point of the fractal metal patch 15 of three rank Koch, and its distributing point is positioned at the below, central point hole of metal floor 14.Six short circuit posts 17 are the hexagonal symmetry shape, and to be distributed in coaxial line probe 13 be on the less circumference of center and radius, as shown in Figure 6.Each short circuit post 17 lower end links to each other with metal floor 14, and the upper end links to each other with the fractal metal patch 15 of three rank Koch by an electronic switch 18, as shown in Figure 4.The fractal metal patch 15 of three rank Koch is close to the below of dielectric substrate 16.Having 19, six finedraws 19 of six identical finedraws and six short circuit posts 17 on the metal floor 14 correspondingly is the hexagonal symmetry shape to be distributed in coaxial line probe 13 is on the bigger circumference of center and radius, as shown in Figure 6.All embedded at least one electronic switch 18 in every finedraw 19, with the closed or disconnection of control whole piece finedraw, as shown in Figure 7.
The present invention adopts the coaxial feed form, and energy is connected on the antenna patch by coaxial feeder probe 13.Its feeding classification also can adopt other form, and switch 18 can be selected mems switch for use, also can select other forms of electronic switch for use.Dielectric substrate 16 has certain dielectric constant and gets final product.Described finedraw 19 can be linear or circular arc finedraw.
The present invention is by the switch on control finedraw 19 and the short circuit post 17 (be connected or disconnect), can make antenna be in different operating states, and then at a different high directivity gain antenna antenna pattern of Frequency point realization main lobe sensing, 6 wherein the most basic pairing antenna patterns of operating state be the antenna upper half-space, with the form an angle antenna pattern of six symmetrical distributions of scope of the fractal metal patch normal direction of Koch, shown in Fig. 8,9.
Though such scheme does not provide the relative scale relation of size between all building blocks, all can reconstruct above-mentioned 6 kinds of fundamental radiation directional diagrams, and realizes the scanning of upper half-space on a frequency.Any one dimension scale relation have the fractal paster of Koch directional diagram reconstructable aerial, all can dwindle or amplify according to its dimension scale, with the scanning of realization different frequent points.
The present invention can be so that antenna volume be little, in light weight, the gain high owing to having adopted the fractal paster structure of Koch, and it is conformal to be easy to carrier surface.Simultaneously owing to adopted short circuit post and the ground technology of cracking can be so that antenna pattern is realized directional diagram scanning at a frequency, antenna structure is simple, it is convenient to realize, simplified the design of feeding network, particularly because the high directivity of its realization gain (9dB-11.7dB) therefore has very high practical value on the land mobile communication terminal.
Description of drawings
Fig. 1 is the described antenna schematic diagram of document " MEMS Reconfigurable Vee Antenna ".Wherein, 1 is reconfigurable VEE antenna, the 2nd, and stretching device, the 3rd, transmission line, the 4th, dielectric substrate, the 5th, the main lobe direction of directional diagram.
Fig. 2 is the schematic diagram of the described antenna of document " On the Gain of A Reconfigurable-Aperture Antenna ".Wherein, the 6th, distributing point, the 7th, mems switch.
Fig. 3 is the structural representation of the described antenna of document " A Pattern Reconfigurable Microstrip Parasitic Array ".Wherein, the 8th, radiating antenna, the 9th, control switch, the 10th, coaxial feeder, the 11st, metal floor, the 12nd, dielectric material.
Fig. 4 is the directional diagram reconstructable microstrip antenna basic structure schematic diagram of the fractal paster of a kind of Koch of having of the present invention, wherein: the 13rd, coaxial line probe, the 14th, metal floor, 15 is the fractal metal patches of three rank Koch, the 16th, dielectric substrate, the 17th, short circuit post, the 18th, electronic switch.
Fig. 5 is the fractal metal patch shape of three rank Koch figure in the directional diagram reconstructable microstrip antenna of the fractal paster of a kind of Koch of having of the present invention.
Fig. 6 is a metal floor schematic diagram in the directional diagram reconstructable microstrip antenna of the fractal paster of a kind of Koch of having of the present invention, wherein: the 13rd, coaxial line probe, the 14th, metal floor, the 17th, short circuit post, the 19th, finedraw.
Fig. 7 is the partial enlarged drawing in finedraw crack 19 in the directional diagram reconstructable microstrip antenna of the fractal paster of a kind of Koch of having of the present invention, wherein, the 18th, electronic switch.
Fig. 8 is the aerial radiation two-dimensional directional figure of the concrete real-time mode of the present invention.
Fig. 9 is the aerial radiation three-dimensional figure of the concrete real-time mode of the present invention.
Embodiment
In Fig. 8,9 embodiment, the material and the attribute of antenna are: dielectric substrate employing dielectric constant is 3.02 common complex media substrate, it is the Copper Foil of 0.018mm that the fractal metal patch of metal floor and Koch adopts thickness, and metal floor is of a size of 400 * 400mm
2, the fractal metal patch of Koch is that three rank Koch are fractal, and six slits are of a size of 1mm * 40mm, and it is the ground panel area of 45mm that the one-tenth center is arranged in symmetrically apart from distributing point.The radius of six short circuit posts is 1mm, becomes that centrosymmetric to be arranged in apart from feeding centre be on the circumference of 23mm.The switch of the planar package form of selecting for use on the microband paste slit is of a size of 1 * 8mm
2, the top of each short circuit post all is connected with a switch and links to each other with microband paste, is of a size of 1 * 2 * 2mm
3
Wherein the switch of the short circuit post on switch in finedraw and opposite is in connection status, and the switch of the switch in other finedraws and other short circuit posts is in off-state, and when frequency is 3.3GHz, by the HFSS of electromagnetic system simulation software emulation, its result is: antenna main lobe gains at 9-11.7dB, can cover the scope of 21 °-51 ° in θ direction, shown in Fig. 8,9.
According to the symmetry of antenna structure, by changing the operating state of switch, can obtain can six kinds of equivalences operating state, realize that the difference of main lobe is pointed to, thereby realize the function that high-gain omnidirectional covers.
Claims (3)
1. the directional diagram reconstructable microstrip antenna with the fractal paster of Koch is characterized in that, comprises coaxial line probe (13), metal floor (14), the fractal metal patches of three rank Koch (15), dielectric substrate (16), six identical short circuit posts (17); The centre bore that coaxial line probe (13) passes metal floor (14) links to each other with the central point of the fractal metal patches of three rank Koch (15), and its distributing point is positioned at the centre bore below of metal floor (14); Six short circuit posts (17) are the hexagonal symmetry shape, and to be distributed in coaxial line probe (13) be on the less circumference of center and radius; Each short circuit post (17) lower end links to each other with metal floor (14), and the upper end links to each other with the fractal metal patches of three rank Koch (15) by an electronic switch (18); The fractal metal patches of three rank Koch (15) are close to the below of dielectric substrate (16); Have six identical finedraws (19) on the metal floor (14), six finedraws (19) and six short circuit posts (17) correspondingly are the hexagonal symmetry shape to be distributed in coaxial line probe (13) are on the bigger circumference of center and radius; All embedded at least one electronic switch (18) in every finedraw (19), with the closed or disconnection of control whole piece finedraw;
The shape of the described fractal metal patches of three rank Koch (15) is formed by three limits fractal differentiation of three rank Koch of an equilateral triangle.
2. a kind of directional diagram reconstructable microstrip antenna with the fractal paster of Koch according to claim 1 is characterized in that described electronic switch (18) is a mems switch.
3. a kind of directional diagram reconstructable microstrip antenna with the fractal paster of Koch according to claim 1 is characterized in that described finedraw (19) can be linear or circular arc finedraw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610021904A CN1925222B (en) | 2006-09-21 | 2006-09-21 | Directional diagram reconstructable microstrip aerial having Koch form-dividing paster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610021904A CN1925222B (en) | 2006-09-21 | 2006-09-21 | Directional diagram reconstructable microstrip aerial having Koch form-dividing paster |
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| Publication Number | Publication Date |
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| CN1925222A CN1925222A (en) | 2007-03-07 |
| CN1925222B true CN1925222B (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200610021904A Expired - Fee Related CN1925222B (en) | 2006-09-21 | 2006-09-21 | Directional diagram reconstructable microstrip aerial having Koch form-dividing paster |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101184092B (en) * | 2007-12-10 | 2010-08-04 | 华中科技大学 | Environment perception restructurable mobile terminal communication processor |
| CN101394019B (en) * | 2008-11-06 | 2012-05-09 | 上海交通大学 | Reconfigurable antenna |
| CN101872894A (en) * | 2010-04-01 | 2010-10-27 | 电子科技大学 | Medium resonator antenna with reconfigurable directional diagram and phased array thereof |
| CN102110913A (en) * | 2010-12-30 | 2011-06-29 | 北京邮电大学 | Directional diagram reconfigurable antenna |
| CN102176534A (en) * | 2011-01-17 | 2011-09-07 | 东南大学 | Independently pull-down electrode type microwave antenna based on MEMS (micro-electromechanical system) and manufacturing method thereof |
| CN102176535B (en) * | 2011-01-17 | 2014-04-16 | 东南大学 | Micro electro mechanical microwave antenna and manufacturing method thereof |
| CN102280704B (en) * | 2011-05-13 | 2015-05-20 | 广东博纬通信科技有限公司 | Circular polarized antenna with wide wave beam width and small size |
| CN106229660A (en) * | 2016-09-11 | 2016-12-14 | 河南师范大学 | 12 jiaos of microwave energys of low-loss collect antenna |
| CN107026318B (en) * | 2017-03-03 | 2019-05-07 | 北京航空航天大学 | A kind of directional diagram reconstructable aerial dividing shape patch based on Koch |
| CN109119756B (en) * | 2017-06-22 | 2020-06-23 | 北京机电工程研究所 | Wide-angle scanning microstrip phased array antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2164005A1 (en) * | 2000-01-27 | 2002-02-01 | Univ Catalunya Politecnica | Microstrip antenna with fractal or prefractal perimeter |
| DE102004013642A1 (en) * | 2004-03-19 | 2005-11-24 | Infineon Technologies Ag | Antenna for a mobile telephone splits into fractal sub-structures with different lengths and sub-structures to imitate curved structures |
| CN1815805A (en) * | 2005-02-02 | 2006-08-09 | 启碁科技股份有限公司 | Multi-frequency antenna cond design method |
-
2006
- 2006-09-21 CN CN200610021904A patent/CN1925222B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2164005A1 (en) * | 2000-01-27 | 2002-02-01 | Univ Catalunya Politecnica | Microstrip antenna with fractal or prefractal perimeter |
| DE102004013642A1 (en) * | 2004-03-19 | 2005-11-24 | Infineon Technologies Ag | Antenna for a mobile telephone splits into fractal sub-structures with different lengths and sub-structures to imitate curved structures |
| CN1815805A (en) * | 2005-02-02 | 2006-08-09 | 启碁科技股份有限公司 | Multi-frequency antenna cond design method |
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