CN102170042A - Micro-strip antenna and method for improving angle diversity effect - Google Patents
Micro-strip antenna and method for improving angle diversity effect Download PDFInfo
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- CN102170042A CN102170042A CN2011100281317A CN201110028131A CN102170042A CN 102170042 A CN102170042 A CN 102170042A CN 2011100281317 A CN2011100281317 A CN 2011100281317A CN 201110028131 A CN201110028131 A CN 201110028131A CN 102170042 A CN102170042 A CN 102170042A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 title claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 71
- 230000005855 radiation Effects 0.000 claims abstract description 52
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims description 29
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 238000005562 fading Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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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
- H01Q9/06—Details
- H01Q9/065—Microstrip dipole antennas
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Abstract
The invention discloses a micro-strip antenna for improving an angle diversity effect, and the micro-strip antenna comprises a conductor vibrator, a medium substrate, an earth plate and a conductor device, wherein the conductor vibrator is connected with the earth plate through the conductor device and used for receiving the incoming wave in the azimuth direction; the medium substrate is arranged between the conductor vibrator and the earth plate; the earth plate is used for supplying the earth in a circuit; the conductor device is used for exciting the radiation of at least one high-order mode; and the maximum radiation direction of the radiation deviates from the zenith direction. The invention simultaneously discloses a method for improving the angle diversity effect, wherein the change of the maximum radiation direction in an antenna directional pattern is realized through the scheme provided by the invention; and the maximum radiation direction which deviates from the zenith direction and the maximum radiation direction of the dominant mode of the conductor vibrator are overlaid, thereby broadening the beam width of the antenna.
Description
Technical Field
The present invention relates to a microstrip antenna technology in a wireless communication system, and more particularly, to a microstrip antenna and a method for improving an angle diversity effect.
Background
The unreliability of wireless communication, in contrast to wired communication, is mainly caused by the time-varying and multipath characteristics of wireless fading channels. Under the condition of not increasing transmission power or system bandwidth, an effective method for overcoming the influence of multipath fading and improving the reliability of a channel is to adopt various diversity techniques. Among them, angle diversity is a more applied one in multi-antenna systems, i.e. the angle diversity separates signals from different directions by using different antenna pattern directions. As shown in fig. 1, the conventional microstrip antenna is composed of a conductor oscillator, a dielectric substrate and a ground plate, wherein the dielectric substrate is interposed between the conductor oscillator and the ground plate. The existing microstrip antenna only radiates in a main mode, and the wave velocity width of the antenna is narrow.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a microstrip antenna and a method for improving the angle diversity effect, so as to change the maximum radiation direction of the antenna pattern and widen the beam width of the antenna.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a microstrip antenna for improving angle diversity effect, which comprises: the device comprises a conductor oscillator, a dielectric substrate, a grounding plate and a conductor device; wherein,
the conductor oscillator is connected with the grounding plate through a conductor device and used for receiving incoming waves in the azimuth direction;
a dielectric substrate interposed between the conductor vibrator and the ground plate;
a ground plate for providing a ground in the circuit;
a conductor device for exciting radiation of at least one higher order mode, the maximum radiation direction of said radiation deviating from the zenith direction.
In the scheme, the dielectric constant of the dielectric substrate is 4.5, and the thickness of the dielectric substrate is 0.5-2 mm.
In the above scheme, the conductor device is a metal through hole.
In the above scheme, at least one metal through hole is provided.
In the scheme, the number of the metal through holes is four, the metal through holes are respectively arranged at four corners of the conductor vibrator, and the depth of each metal through hole is equal to the thickness of the dielectric substrate.
In the scheme, the four metal through holes are symmetrical relative to the center of the conductor oscillator, the four metal through holes are completely identical in shape, and the aperture is 0.1-1 mm.
In the scheme, the distance between the center position of the metal through hole of each conductor oscillator corner and the two sides of the corner is 0.5 mm.
In the above scheme, the length of the long side of the conductor oscillator is 12mm, the length of the wide side is 10mm, and the length of the microstrip side-fed transmission line is 5 mm.
The invention provides a method for improving angle diversity effect, which comprises the following steps:
connecting the conductor oscillator with the grounding plate through a conductor device; at least one higher-order mode of radiation is excited by the conductor component, the direction of maximum radiation of said radiation deviating from the zenith direction.
The invention provides a microstrip antenna and a method for improving angle diversity effect, wherein a conductor oscillator is connected with a ground plate through a conductor device; exciting radiation of at least one higher order mode through the conductor device, wherein the maximum radiation direction of the radiation deviates from the zenith direction; in this way, under radiation superposition of different modes, different beam directions and beam widths can be obtained, the change of the maximum radiation direction of an antenna directional pattern is realized, and the maximum radiation direction deviated from the zenith direction is superposed with the maximum radiation direction of the main mode of the conductor element, so that the beam width of the antenna can be widened.
Drawings
Fig. 1 is a schematic structural diagram of a conventional microstrip antenna;
fig. 2 is a schematic structural diagram of a microstrip antenna for improving an angle diversity effect according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a microstrip antenna using a metal via as a conductor device according to an embodiment of the present invention;
fig. 4 is a schematic view of different modes of radiation directions of the microstrip antenna according to the embodiment of the present invention;
FIG. 5 is a schematic view of the radiation direction of the element antenna;
FIG. 6 is a schematic diagram of comparing beam widths of a microstrip antenna according to an embodiment of the present invention with a conventional microstrip antenna;
FIG. 7 is a schematic standing-wave ratio diagram of a microstrip antenna according to an embodiment of the present invention;
fig. 8 is a flowchart illustrating a method for improving an angle diversity effect according to an embodiment of the present invention.
Detailed Description
The basic idea of the invention is: connecting the conductor oscillator with the grounding plate through a conductor device; at least one higher-order mode of radiation is excited by the conductor component, the direction of maximum radiation of said radiation deviating from the zenith direction.
The invention is further described in detail below with reference to the figures and the specific embodiments.
The present invention realizes a microstrip antenna for improving angle diversity effect, as shown in fig. 2, including: the device comprises a conductor oscillator, a dielectric substrate, a grounding plate and a conductor device; wherein,
the conductor oscillator is connected with the grounding plate through a conductor device and used for receiving incoming waves in the azimuth direction;
a dielectric substrate interposed between the conductor vibrator and the ground plate;
a ground plate for providing a ground in the circuit;
a conductor device for exciting radiation of at least one higher order mode, the maximum radiation direction of the radiation deviating from the zenith direction;
the dielectric constant of the dielectric substrate can be 4.5, the thickness is generally between 0.5 and 2mm, and the thickness is 1mm in the embodiment;
further, the beam width of the microstrip antenna is improved by adjusting the thickness of the dielectric substrate;
specifically, the thickness of the dielectric substrate at the maximum beam width of the working frequency of the microstrip antenna is determined through a simulation test;
the conductor means are typically metal vias;
further, at least one, generally four, metal through holes are formed, as shown in fig. 3, at four corners of the conductor oscillator, respectively, the depth of the metal through hole is the same as the thickness of the dielectric substrate, for example, the thickness of the dielectric substrate in this embodiment is 1 mm;
furthermore, the four metal through holes are symmetrical relative to the center of the conductor oscillator, the four metal through holes are completely identical in shape, and the aperture is generally 0.1-1 mm;
furthermore, the distance between the center position of the metal through hole of each conductor oscillator corner and the two sides of the corner is 0.5 mm;
furthermore, the length of the long side of the conductor oscillator is 12mm, the length of the wide side of the conductor oscillator is 10mm, and the length of the microstrip side-fed transmission line is 5 mm.
The radiation directions of different modes of the microstrip antenna of the embodiment are shown in fig. 4, where the solid line is the radiation direction of the TM11 mode, the sparse dotted line is the radiation direction of the TM21 mode, and the dense dotted line is the radiation direction of the TM31 mode, so that different beam directions and beam widths can be obtained under radiation superposition of different modes.
The four metal through holes of the microstrip antenna of this embodiment are equivalent to dipole antennas, the radiation direction of the dipole antennas is shown in fig. 5, it can be seen that the maximum radiation direction is the horizontal direction, the maximum radiation direction of the main mode of the conductor element is the zenith direction, the two are perpendicular, and when the amplitudes of the two can be compared, the beam width of the antenna can be widened by overlapping the two.
The comparison of the beam widths of the microstrip antenna of this embodiment and the conventional microstrip antenna is shown in fig. 6, in which the square identification curve is the radiation pattern of the microstrip antenna of this embodiment, and the triangular identification curve is the radiation pattern of the conventional microstrip antenna, it can be seen that the beam width of the microstrip antenna of this embodiment is much larger than that of the conventional microstrip antenna, and the beam width reaches 170 degrees at 3 dB.
The standing wave ratio of the microstrip antenna of the present embodiment is the smallest at 10.5GHz as shown in fig. 7.
Based on the microstrip antenna, the present invention further provides a method for improving the angle diversity effect, as shown in fig. 8, the method includes the following steps:
step 101: connecting the conductor oscillator with the grounding plate through a conductor device;
here, the conductor oscillator and the ground plate are separated by a dielectric substrate;
the dielectric constant of the dielectric substrate can be 4.5, the thickness is generally between 0.5 and 2mm, and the thickness is 1mm in the embodiment;
the conductor means are typically metal vias;
furthermore, at least one, generally four metal through holes are formed in the four corners of the conductor vibrator, and the depth of each metal through hole is the same as the thickness of the dielectric substrate, for example, the thickness of the dielectric substrate in the embodiment is 1 mm;
furthermore, the four metal through holes are symmetrical relative to the center of the conductor oscillator, the four metal through holes are completely identical in shape, and the aperture is generally 0.1-1 mm;
furthermore, the distance between the center position of the metal through hole of each conductor oscillator corner and the two sides of the corner is 0.5 mm;
further, the length of the long side of the conductor oscillator is 12mm, the length of the wide side of the conductor oscillator is 10mm, and the length of the microstrip side-fed transmission line is 5 mm;
further, the method also comprises the following steps: the beam width of the microstrip antenna is improved by adjusting the thickness of the dielectric substrate;
specifically, the thickness of the dielectric substrate at the maximum beam width at the operating frequency of the microstrip antenna is determined through a simulation test.
Step 102: at least one higher-order mode of radiation is excited by the conductor component, the direction of maximum radiation of said radiation deviating from the zenith direction.
According to the scheme of the invention, the conductor device excites radiation of at least one high-order mode, different beam directions and beam widths can be obtained under radiation superposition of different modes, the change of the maximum radiation direction of an antenna directional diagram is realized, and the maximum radiation direction deviating from the zenith direction is superposed with the maximum radiation direction of a main mode of the conductor oscillator, so that the beam width of the antenna can be widened.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A microstrip antenna for improving an angle diversity effect, the microstrip antenna comprising: the device comprises a conductor oscillator, a dielectric substrate, a grounding plate and a conductor device; wherein,
the conductor oscillator is connected with the grounding plate through a conductor device and used for receiving incoming waves in the azimuth direction;
a dielectric substrate interposed between the conductor vibrator and the ground plate;
a ground plate for providing a ground in the circuit;
a conductor device for exciting radiation of at least one higher order mode, the maximum radiation direction of said radiation deviating from the zenith direction.
2. The microstrip antenna of claim 1, wherein the dielectric substrate has a dielectric constant of 4.5 and a thickness of 0.5-2 mm.
3. A microstrip antenna according to claim 1 or 2 wherein the conductor means is a metal via.
4. The microstrip antenna of claim 3 wherein at least one of the metal vias.
5. The microstrip antenna of claim 4, wherein there are four metal vias at four corners of the conductor element, and the depth of the metal vias is the same as the thickness of the dielectric substrate.
6. The microstrip antenna of claim 5, wherein the four metal vias are symmetrical with respect to the center of the conductor element, and have the same shape and an aperture of 0.1-1 mm.
7. The microstrip antenna of claim 6, wherein the center of the metal via hole of each corner of the conductor element is 0.5mm away from both sides of the corner.
8. The microstrip antenna of claim 7, wherein the conductor element has a length of 12mm at the long side, a length of 10mm at the wide side, and a length of 5mm at the microstrip side-fed transmission line.
9. A method for improving angular diversity, the method comprising:
connecting the conductor oscillator with the grounding plate through a conductor device; at least one higher-order mode of radiation is excited by the conductor component, the direction of maximum radiation of said radiation deviating from the zenith direction.
10. The method of claim 9, wherein the conductor device is a metal via.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100281317A CN102170042A (en) | 2011-01-26 | 2011-01-26 | Micro-strip antenna and method for improving angle diversity effect |
| PCT/CN2011/081142 WO2012100567A1 (en) | 2011-01-26 | 2011-10-21 | Microstrip antenna and method for improving angle diversity effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100281317A CN102170042A (en) | 2011-01-26 | 2011-01-26 | Micro-strip antenna and method for improving angle diversity effect |
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| CN102170042A true CN102170042A (en) | 2011-08-31 |
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| CN2011100281317A Pending CN102170042A (en) | 2011-01-26 | 2011-01-26 | Micro-strip antenna and method for improving angle diversity effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012100567A1 (en) * | 2011-01-26 | 2012-08-02 | 中兴通讯股份有限公司 | Microstrip antenna and method for improving angle diversity effect |
| CN109390663A (en) * | 2017-08-08 | 2019-02-26 | 京信通信系统（中国）有限公司 | A kind of micro-strip radiating element and its antenna |
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| JPS6213104A (en) * | 1985-07-11 | 1987-01-21 | Nippon Denso Co Ltd | Plane antenna for mobile body |
| CN101471494A (en) * | 2007-12-28 | 2009-07-01 | 西北工业大学 | X waveband high-gain microstrip antenna based on negative dielectric transmission line |
| FR2926929A1 (en) * | 2008-01-30 | 2009-07-31 | Bouygues Telecom Sa | PRINTED ANTENNA HAVING A BI-BEAM DIAGRAM |
| CN201438508U (en) * | 2009-06-30 | 2010-04-14 | 中兴通讯股份有限公司 | Circular polarization antenna |
| CN102468534A (en) * | 2010-11-04 | 2012-05-23 | 北京和协航电科技有限公司 | Single-layer double-frequency microstrip antenna |
| CN102570016A (en) * | 2011-12-14 | 2012-07-11 | 安徽锦特微波电子有限公司 | Miniaturized double-frequency circular-polarization metamaterial microstrip antenna |
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| US6356242B1 (en) * | 2000-01-27 | 2002-03-12 | George Ploussios | Crossed bent monopole doublets |
| CN2857244Y (en) * | 2005-08-03 | 2007-01-10 | 深圳国瑞通讯有限公司 | Combined mini-band patch antenna for mobile satellite communicator |
| CN2927344Y (en) * | 2006-03-27 | 2007-07-25 | 佛山市健博通电讯实业有限公司 | Wide-angle radiant unit for plated antenna in horizontal polarized sector |
| CN101316008B (en) * | 2008-06-13 | 2012-06-27 | 哈尔滨工业大学 | MIMO mobile terminal multi-antenna with high isolation and low correlated characteristic |
| CN102170042A (en) * | 2011-01-26 | 2011-08-31 | 中兴通讯股份有限公司 | Micro-strip antenna and method for improving angle diversity effect |
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2011
- 2011-01-26 CN CN2011100281317A patent/CN102170042A/en active Pending
- 2011-10-21 WO PCT/CN2011/081142 patent/WO2012100567A1/en active Application Filing
Patent Citations (6)
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| JPS6213104A (en) * | 1985-07-11 | 1987-01-21 | Nippon Denso Co Ltd | Plane antenna for mobile body |
| CN101471494A (en) * | 2007-12-28 | 2009-07-01 | 西北工业大学 | X waveband high-gain microstrip antenna based on negative dielectric transmission line |
| FR2926929A1 (en) * | 2008-01-30 | 2009-07-31 | Bouygues Telecom Sa | PRINTED ANTENNA HAVING A BI-BEAM DIAGRAM |
| CN201438508U (en) * | 2009-06-30 | 2010-04-14 | 中兴通讯股份有限公司 | Circular polarization antenna |
| CN102468534A (en) * | 2010-11-04 | 2012-05-23 | 北京和协航电科技有限公司 | Single-layer double-frequency microstrip antenna |
| CN102570016A (en) * | 2011-12-14 | 2012-07-11 | 安徽锦特微波电子有限公司 | Miniaturized double-frequency circular-polarization metamaterial microstrip antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012100567A1 (en) * | 2011-01-26 | 2012-08-02 | 中兴通讯股份有限公司 | Microstrip antenna and method for improving angle diversity effect |
| CN109390663A (en) * | 2017-08-08 | 2019-02-26 | 京信通信系统（中国）有限公司 | A kind of micro-strip radiating element and its antenna |
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| Publication number | Publication date |
|---|---|
| WO2012100567A1 (en) | 2012-08-02 |
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Application publication date: 20110831 |