CN202523840U - Multi-parameter reconfigurable antenna - Google Patents
Multi-parameter reconfigurable antenna Download PDFInfo
- Publication number
- CN202523840U CN202523840U CN2012201156954U CN201220115695U CN202523840U CN 202523840 U CN202523840 U CN 202523840U CN 2012201156954 U CN2012201156954 U CN 2012201156954U CN 201220115695 U CN201220115695 U CN 201220115695U CN 202523840 U CN202523840 U CN 202523840U
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- feeding network
- microstrip line
- copper sheet
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Abstract
The utility model discloses a multi-parameter reconfigurable antenna which comprises a first substrate and a second substrate. The second substrate is disposed above the first substrate. A distance between the second substrate and the first substrate is 6mm. The bottom side of the first substrate is coated with copper. The right side of the first substrate is provided with a first feed network. The bottom side of the second substrate is equipped with a second feed network. The first feed network and the second feed network are mutually coupled. The right side of the second substrate is equipped with a radiation module. The second feed network is connected with the radiation module. The advantages are that the multi-parameter reconfigurable antenna is capable of realizing reconfiguration between linear polarization and circular polarization, and is also capable of realizing reconfiguration between vertical polarization from +45 degrees to -45degrees; adaptive reconfiguration of a directional diagram can be realized through changes of the feed networks; and structural changes between an antenna array and a bow-tie antenna is realized via radio frequency switches at the top so that frequency reconfiguration is realized. In a word, through the feed networks, the antenna of the utility model enables reconfiguration of three parameters, that is to say, the polarization, the directional diagram and the frequency, to be realized.
Description
Technical field
The utility model relates to a kind of antenna, especially relates to a kind of multi-parameter reconfigurable antenna.
Background technology
Along with the fast development of wireless communication system, system is also increasingly high to the requirement of antenna, is that the antenna requirement works in a plurality of frequency ranges on the one hand; Require to reduce the quantity and the volume of antenna on the other hand; Particularly for the terminal, because requirements such as mobility and miniaturizations, antenna must work in multimode; Under the situation that multifrequency is difficult to realize, the frequency reconfigurable of just necessary researching antenna technology.
When the polarization of antenna is meant the transmitting antenna radiation, on its greatest irradiation direction, along with the time changes, the track that electric field intensity is passed by in the space.The polarization of antenna has linear polarization, circular polarization and elliptical polarization, if the polarization of reception antenna then polarization mismatch can occur with to come wave polarization different, influences the quality of reception.In wireless communication system, if the change of transmitted wave or transmission environment might change polarization of electromagnetic wave, also just need the polarization of reception antenna to change, with the reception that obtains, so the polarization reconfigurable antenna is particularly important to the multipolarization communication system.
Antenna pattern is at the CF point; With figured antenna far region radiation field, represent that also antenna transmits and receives the zone of signal, if the electromagnetic wave of emission is not within the receiver radiation directional diagram; Then just do not receive signal; Current systems such as MIMO belong to multi-input multi-output system, many times just need the diversity reception of directional diagram, just need the antenna pattern restructural under the specified conditions.
Software radio and cognitive radio technology are through the situation of perception current network, and the realization self-configuration responds the change with dynamic self-adapting operation and environment, to make full use of frequency spectrum resource.As one of radio communication new milestone; When cognitive radio and the combination of MIMO technology; Then can further improve systematic function and frequency efficiency; But simultaneously also directly in the face of problems such as many antenna arrangement, channeling and beam formings, the reconfigurable antenna characteristic then can solve the problems that cognitive MIMO technology is faced.
Continuous proposition along with new technology and new theory; Antenna Design has also obtained significant progress; Particularly microstrip antenna is technological, meander is technological, PIFA is technological and the application of different feeding networks, the miniaturization of antenna and restructural are achieved, and performance improves constantly.Reconstruction property such as the further optimization through aspects such as antenna structure and feeding networks can fine acquisition frequency, directional diagram and polarization.
Present reconfigurable antenna all is the reconstruct of single antenna parameters such as realization frequency, directional diagram or polarization that can only be single, is difficult to satisfy The Application of Technology such as the used cognitive radio of follow-up wireless communication system.
Summary of the invention
The utility model technical problem to be solved provides a kind of reconfigurable antenna that satisfies frequency, directional diagram and polarization three aspects.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of multi-parameter reconfigurable antenna; Comprise first substrate and second substrate, described second substrate is arranged on the top of first substrate, and the distance between described second substrate and first substrate is 6mm; Copper is covered in the bottom of described first substrate; The front of described first substrate is provided with first feeding network, and the bottom surface of described second substrate is provided with second feeding network, and described first feeding network and antenna radiation unit are through coupling work; The front of described second substrate is provided with Radiation Module; Described second feeding network carries out feed with described Radiation Module through directly being connected, and it is characterized in that described Radiation Module comprises four radiation patch unit, and described radiation patch unit is the isosceles triangle copper sheet; Four well-balanced being arranged on second substrate of isosceles triangle copper sheet; The drift angle of four isosceles triangle copper sheets is simultaneously towards the center of second substrate, and described second feeding network comprises four separate strip copper sheets, and the drift angle of isosceles triangle copper sheet is connected with an end of strip copper sheet through the heavy copper via hole that is arranged in second substrate; The other end of strip copper sheet extends to the edge of second substrate, is provided with first RF switch near the strip copper sheet of heavy copper via hole.
Described first feeding network comprises four feed element; Described feed element comprises L shaped microstrip line and linear microstrip line; The feed end of linear microstrip line is provided with second RF switch; The transverse part of L shaped microstrip line is connected with the linear microstrip line, and described L shaped microstrip line is provided with the 3rd radio frequency switch.
Described radiation patch unit is that isosceles triangle covers the copper paster.
Compared with prior art, the advantage of the utility model is not only to realize the reconstruct between linear polarization and the circular polarization, but also can realize ± reconstruct between 45 ° perpendicular polarization.When first RF switch breaks off; Second feeding network is not worked; When if second RF switch and the 3rd radio frequency switch are all closed; First feeding network is to the radiation patch feed that is coupled, because the electric current quadrature that L type microstrip line and linear pattern microstrip line evoke on radiation patch, and phase phasic difference 90
oSo the electromagnetic wave of radiation is a circularly polarised wave on the radiating element, circular polarization antenna array of four common compositions of radiating element.If break off the 3rd radio frequency switch on the L type microstrip line, that is to say when only second RF switch is closed that feeding network of array antennas has only the linear pattern microstrip line to give the radiating element feed through coupling, so antenna works in linear polarization.In addition, if break off second RF switch and the 3rd radio frequency switch simultaneously, first RF switch is closed; The then first feeding network termination work; The feed of antenna is realized by second feeding network, just by original coupling feed, becomes the direct feed of this moment; The structure type of antenna is transformed into mutually perpendicular two knot antennas by original triangle antenna battle array, so the polarization of antenna also just has been transformed into ± 45 ° perpendicular polarization.
The length of the current path that has been encouraged by feeding network on the antenna radiation unit is directly determining the operating frequency of antenna; Through change RF switch realize antenna by the triangle antenna battle array in the transition process of mutually perpendicular knot antenna; Because variation has taken place in the current path length of antenna, so the operating frequency of antenna has also just realized reconstruct.Certainly, at this moment the antenna pattern of antenna has also been realized reconstruct simultaneously.In addition, do not work, when only first feeding network is worked (under linear polarization or the circular polarization situation),, can better realize the self-adapting reconstruction of directional diagram through changing the phase place of feeding network at second feeding network.Comprehensive, through feeding network, the utility model antenna can be realized polarizing, the reconstruct of directional diagram and three parameters of frequency.
Description of drawings
Fig. 1 is the stereogram of the utility model;
Fig. 2 is the utility model first substrate Facad structure figure;
Fig. 3 is the utility model first substrate bottom surface structure chart;
Fig. 4 is the utility model second substrate Facad structure figure.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
A kind of multi-parameter reconfigurable antenna comprises that first substrate 1 and second substrate, 2, the second substrates 2 are arranged on the top of first substrate 1; Distance between second substrate 2 and first substrate 1 is 6mm, and copper is covered in the bottom surface of first substrate 1, and the front of first substrate 1 is provided with first feeding network 3; The bottom surface of second substrate 2 is provided with second feeding network 4; First feeding network 3 and second feeding network 4 intercouple, and the front of second substrate 2 is provided with Radiation Module 5, the second feeding networks 4 and is connected with Radiation Module 5; Radiation Module 5 comprises four radiation patch unit 51; Radiation patch unit 51 is the isosceles triangle copper sheet, four well-balanced being arranged on second substrate 2 of isosceles triangle copper sheet, and 511 whiles of drift angle of four isosceles triangle copper sheets are towards the center of second substrate 2; Second feeding network 4 comprises four separate strip copper sheets 41; The drift angle 511 of isosceles triangle copper sheet is connected with an end of strip copper sheet 41 through the heavy copper via hole that is arranged in second substrate 2, and the other end of strip copper sheet 41 extends to the edge of second substrate 2, is provided with first RF switch 42 near the strip copper sheet 41 of heavy copper via hole.
Claims (3)
1. multi-parameter reconfigurable antenna; Comprise first substrate and second substrate, described second substrate is arranged on the top of first substrate, and the distance between described second substrate and first substrate is 6mm; Copper is covered in the bottom surface of described first substrate; The front of described first substrate is provided with first feeding network, and the bottom surface of described second substrate is provided with second feeding network, and described first feeding network and second feeding network intercouple; The front of described second substrate is provided with Radiation Module; Described second feeding network is connected with described Radiation Module, it is characterized in that described Radiation Module comprises four radiation patch unit, and described radiation patch unit is the isosceles triangle copper sheet; Four well-balanced being arranged on second substrate of isosceles triangle copper sheet; The drift angle of four isosceles triangle copper sheets is simultaneously towards the center of second substrate, and described second feeding network comprises four separate strip copper sheets, and the drift angle of isosceles triangle copper sheet is connected with an end of strip copper sheet through the heavy copper via hole that is arranged in second substrate; The other end of strip copper sheet extends to the edge of second substrate, is provided with first RF switch near the strip copper sheet of heavy copper via hole.
2. a kind of multi-parameter reconfigurable antenna according to claim 1; It is characterized in that described first feeding network comprises four feed element; Described feed element comprises L shaped microstrip line and linear microstrip line; The feed end of linear microstrip line is provided with second RF switch, and the transverse part of L shaped microstrip line is connected with the linear microstrip line, and described L shaped microstrip line is provided with the 3rd radio frequency switch.
3. a kind of multi-parameter reconfigurable antenna according to claim 1 is characterized in that described radiation patch unit is the equilateral triangle copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201156954U CN202523840U (en) | 2012-03-23 | 2012-03-23 | Multi-parameter reconfigurable antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201156954U CN202523840U (en) | 2012-03-23 | 2012-03-23 | Multi-parameter reconfigurable antenna |
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| Publication Number | Publication Date |
|---|---|
| CN202523840U true CN202523840U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201156954U Expired - Fee Related CN202523840U (en) | 2012-03-23 | 2012-03-23 | Multi-parameter reconfigurable antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794870A (en) * | 2014-01-03 | 2014-05-14 | 西安电子科技大学 | Miniaturized three-order frequency reconfigurable Beidou navigation antenna |
| CN105098361A (en) * | 2015-08-11 | 2015-11-25 | 哈尔滨工业大学 | Four-parameter reversible reconstruction microstrip antenna based on micro-channel dielectric slab structure |
| CN110767997A (en) * | 2019-11-06 | 2020-02-07 | 华南理工大学 | Broadband high-gain differential feed multi-polarization antenna |
-
2012
- 2012-03-23 CN CN2012201156954U patent/CN202523840U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794870A (en) * | 2014-01-03 | 2014-05-14 | 西安电子科技大学 | Miniaturized three-order frequency reconfigurable Beidou navigation antenna |
| CN105098361A (en) * | 2015-08-11 | 2015-11-25 | 哈尔滨工业大学 | Four-parameter reversible reconstruction microstrip antenna based on micro-channel dielectric slab structure |
| CN110767997A (en) * | 2019-11-06 | 2020-02-07 | 华南理工大学 | Broadband high-gain differential feed multi-polarization antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20140323 |