CN101916913A - Ultra-wide band microstrip patch antenna - Google Patents
Ultra-wide band microstrip patch antenna Download PDFInfo
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- CN101916913A CN101916913A CN2010102368541A CN201010236854A CN101916913A CN 101916913 A CN101916913 A CN 101916913A CN 2010102368541 A CN2010102368541 A CN 2010102368541A CN 201010236854 A CN201010236854 A CN 201010236854A CN 101916913 A CN101916913 A CN 101916913A
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Abstract
The invention discloses an ultra-wide band microstrip patch antenna. The ultra-wide band microstrip patch antenna comprises an elliptical patch connected with a coaxial feed probe, and a rectangular corner-cut patch of which the central part is hollowed, wherein the elliptical patch is positioned on the hollowed part of the rectangular corner-cut patch; the hollowed part of the rectangular corner-cut patch has an elliptical structure; and the elliptical patch and the rectangular corner-cut patch are arranged on the surface of the same substrate. Through an elliptical slot-coupled structure of the antenna, the path length of surface current on the rectangular corner-cut patch is increased, and the antenna size is reduced. The elliptical slot-coupled ultra-wide band microstrip patch antenna has the advantages of small volume, low cost and easy manufacturing, and can block the charge storage of DC interference signals on the rectangular corner-cut patch through slot coupling and improve the interference resistance of the antenna.
Description
Technical field
The present invention relates to a kind of microstrip antenna that in communication system, uses, relate in particular to a kind of ultra-wide band microstrip patch antenna that contains oval slit coupled structure.
Background technology
Along with the fast development of radar, precise guidance, remote sensing and radio communication industry, the needs of broadband, miniaturization micro-strip paster antenna are become more and more urgent.In various expansion microstrip antenna bandwidth, reduce in the method for antenna size, the method for slotting on the paster antenna has obtained widely using.
Two authors of T.Huynh and K.-F.Lee have proposed a kind of U type groove micro-strip paster antenna (T.Huynh and K.-F.Lee in nineteen ninety-five in " Electronics Letters " the 31st the 16th phase of volume, Single-layer single-patch wideband microstrip antenna, Electronics Letters, 1995,31 (16): 1310-1312), four authors such as Tong Yun have proposed a local Copper Foil in 2008 in " microwave journal " the 24th the 4th phase of volume and have added dielectric layer, major part is the U type groove micro-strip paster antenna of air layer, still there is the bigger problem of overall dimension in paster antenna after this improvement, this and satellite communication, it is incongruent that device miniaturization in the mobile communication application requires.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of ultra-wide band microstrip patch antenna of coaxial probe feed is proposed, this antenna adopts oval slit coupled structure to increase low-frequency resonant point micro-strip paster antenna upper surface path of current length, to reach the purpose that reduces resonance frequency, reduces antenna size, under identical operating frequency and the bandwidth, the size that adds dielectric layer, most of U type groove rectangular patch antenna for air layer than above-mentioned local Copper Foil reduces 13% at least.
The present invention adopts following technical scheme:
A kind of oval slit coupling ultra-wide band microstrip patch antenna that is used for communication system comprises an oval paster that joins with coaxial feed probe, the rectangle corner cut paster that the centre is hollowed out.Oval paster is positioned at the position that hollows out of rectangle corner cut paster, and rectangle corner cut paster hollows out the figure at position for oval, and oval paster and rectangle corner cut paster place the upper surface of same substrate.The center of circle that the ellipse of rectangle corner cut paster is cut hole and oval paster all is positioned on the longitudinal central axis line of rectangle corner cut paster, two centers of circle are not in same point, between two ellipses the slit is arranged, the major axis that ellipse is cut hole and oval paster all is positioned at horizontal direction, and is following parallel with going up of rectangle corner cut paster.Two angles are cut about rectangle corner cut paster bottom, and the excision spot size is identical, are that the center is left-right symmetric with the longitudinal central axis line of rectangle corner cut paster.
The invention has the beneficial effects as follows that oval slit coupling microstrip paster antenna adopts oval slit coupled structure to increase the path of surface current on antenna patch, reduces antenna size, realizes miniaturization.By the slit coupled modes, block the charge storage of direct current interference signal on rectangle corner cut paster simultaneously, improve the antijamming capability of antenna.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is the vertical view of ultra-wide band microstrip patch antenna of the present invention.
Fig. 2 is the front view of ultra-wide band microstrip patch antenna of the present invention.
Fig. 3 is the emulation and the resolution chart of the input reflection loss of ultra-wide band microstrip patch antenna of the present invention in frequency band.
Among the figure: the 10-ultra-wide band microstrip patch antenna, the 20-dielectric-slab, the rectangle corner cut paster that the 11-centre is hollowed out, the left side of 111-rectangle corner cut paster 11, the top of 112-rectangle corner cut paster 11, the right of 113-rectangle corner cut paster 11, the bottom right incisal angle edge of 114-rectangle corner cut paster 11, the bottom of 115-rectangle corner cut paster 11, the lower-left incisal angle edge of 116-rectangle corner cut paster 11, the oval paster of 12-, the distributing point of coaxial probe on the oval paster of 121-, the 30-coaxial probe, 40-ground plate, 50-coaxial feeding earth terminal.
Embodiment
Fig. 1 is the vertical view of the oval slit coupling ultra-wide band microstrip patch antenna 10 of the present invention's proposition, Fig. 2 is the front view of oval slit coupling ultra-wide band microstrip patch antenna 10, ultra-wide band microstrip patch antenna 10 places on the dielectric-slab 20, be the left-right symmetric structure, comprise rectangle corner cut paster 11 and oval paster 12 that the centre is hollowed out, the center of rectangle corner cut paster 11 is oval by the figure of cut-out, the center of circle of its center of circle and oval paster 12 all is positioned on the longitudinal central axis line of rectangle corner cut paster 11, but two centers of circle are not in same point, major axis is all following parallel with going up of rectangle corner cut paster 11, between two ellipses the slit is arranged.What it should be noted that rectangle corner cut paster 11 is only limited to rectangle corner cut paster 11 self by cut-out.
The rectangle corner cut paster 11 that the centre is hollowed out comprises the left side 111, top 112, the right 113, bottom right incisal angle edge 114, bottom 115 and lower-left incisal angle edge 116.Bottom right incisal angle edge 114 is measure-alike with lower-left incisal angle edge 116, is positioned at the longitudinal central axis line both sides of rectangle corner cut paster 11, is left-right symmetric.By the intermediate gap coupling, realize impedance matching between rectangle corner cut paster 11 and the oval paster 12.
Oval slit coupling ultra-wide band microstrip patch antenna 10 places the upper surface of dielectric-slab 20, between the lower surface of dielectric-slab 20 and the ground plate 40 is air, and dielectric-slab 20 thickness are even, and the air layer between dielectric-slab 20 and the ground plate 40 is even, thickness is identical everywhere, and dielectric-slab 20 is parallel with ground plate 40.
Signal enters oval paster 12 by the distributing point 121 of coaxial probe 30 on oval paster 12, and then utilizes coupling of oval slit and rectangle corner cut paster 11 to realize impedance matching, and coaxial feeding earth terminal 50 links to each other with ground plate 40.
The dielectric constant that a preferred embodiment of the present invention is a substrate 20 is 3.2, and thickness is 1.14mm, and the tangent loss is 0.003, and substrate 20 is parallel with ground plate 40, is air layer between substrate 20 and the ground plate 40, and thickness is 10mm; It is symmetrical that the overall structure of this ellipse slit coupling ultra-wide band microstrip patch antenna 10 is that the longitudinal central axis line with rectangle corner cut paster 11 is that benchmark is, the left side 111 of rectangle corner cut paster 11, the right 113 length are 27.3mm, the length of the top 112 of rectangle corner cut paster 11 is 80mm, the length of the bottom 115 of rectangle corner cut paster 11 is 40mm, because the bottom right incisal angle edge 114 of rectangle corner cut paster 11, lower-left incisal angle edge 116 is symmetrical structures, be the example explanation with bottom right incisal angle edge 114 below, the intersection point on bottom right incisal angle edge 114 and the right 113 of rectangle corner cut paster 11 is 9.7mm to following 115 vertical range, following 115 and the intersection point of bottom right incisal angle edge 114 113 vertical range is 20mm to the right; The hollowed area of rectangle corner cut paster 11 is an ellipse figure, its center of circle is positioned on the longitudinal central axis line of rectangle corner cut paster 11, major axis is following parallel with going up of rectangle corner cut paster 11, the vertical range that ellipse is cut the bottom 115 of the center of circle in hole and rectangle corner cut paster 11 is 16mm, major semiaxis length is 18mm, and semi-minor axis length is 12.6mm; The center of circle of oval paster 12 is positioned on the longitudinal central axis line of rectangle corner cut paster 11, its major axis is following parallel with going up of rectangle corner cut paster 11, the vertical range of the bottom 115 of the center of circle and rectangle corner cut paster 11 is 10mm, and major semiaxis length is 8mm, and semi-minor axis length is 2.4mm; Coaxial probe 30 is positioned at the distributing point 121 on the oval paster 12 on the longitudinal central axis line of rectangle corner cut paster 11, with the vertical range of the bottom 115 of rectangle corner cut paster 11 be 9.04mm.
The central task frequency of this paster antenna is 2.7GHz, and the input reflection loss is less than-10dB on frequency range 2.11GHz～3.30GHz, and the relative impedance bandwidth of antenna reaches 44%.
Fig. 3 is the emulation and the resolution chart of the input reflection loss of the oval slit coupling ultra-wide band microstrip patch antenna 10 that proposes of the present invention.As shown in Figure 3, ultra-wide band microstrip patch antenna 10 has good input reflection loss effect in the embodiment of the present invention, from curve | S11| can be observed, input reflection loss absolute value in the ultra broadband frequency band range is greater than 10, and outside the passband frequency range, signal input reflection loss absolute value is less than 10.Illustrate that thus oval slit coupling ultra-wide band microstrip patch antenna 10 has good impedance matching effect in selected frequency band.
Claims (3)
1. ultra-wide band microstrip patch antenna, its feature comprises an oval paster that joins with coaxial feed probe, the rectangle corner cut paster that the centre is hollowed out, oval paster is positioned at the hollowed area of rectangle corner cut paster, the figure of rectangle corner cut paster hollowed area is oval, and oval paster and rectangle corner cut paster are positioned at the upper surface of same substrate.
2. a kind of ultra-wide band microstrip patch antenna according to claim 1, it is characterized in that, the center of circle that ellipse is cut hole and oval paster all is positioned on the longitudinal central axis line of rectangle corner cut paster, two centers of circle are not in same point, between two ellipses the slit is arranged, the major axis that ellipse is cut hole and oval paster all in the horizontal direction, and is and following parallel with going up of rectangle corner cut paster.
3. a kind of ultra-wide band microstrip patch antenna according to claim 1 is characterized in that, two angles are cut about the bottom of rectangle corner cut paster, and the excision spot size is identical, is that the center is left-right symmetric with the longitudinal central axis line of rectangle corner cut paster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102368541A CN101916913A (en) | 2010-07-26 | 2010-07-26 | Ultra-wide band microstrip patch antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102368541A CN101916913A (en) | 2010-07-26 | 2010-07-26 | Ultra-wide band microstrip patch antenna |
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| CN101916913A true CN101916913A (en) | 2010-12-15 |
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| CN2010102368541A Pending CN101916913A (en) | 2010-07-26 | 2010-07-26 | Ultra-wide band microstrip patch antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110892A (en) * | 2010-12-29 | 2011-06-29 | 上海大学 | Low-standing-wave ratio and ultra-wide band planar slot antenna |
| CN103794854A (en) * | 2014-01-17 | 2014-05-14 | 复旦大学 | Compact UWB antenna with low cut-off frequency |
| CN110098467A (en) * | 2019-04-28 | 2019-08-06 | 西安空间无线电技术研究所 | A kind of single feedback single layer circular polarization microstrip antenna of more orthogonal mode fusion broadening bandwidth |
| CN111541016A (en) * | 2020-04-09 | 2020-08-14 | 大连理工大学 | Multi-mode broadband patch antenna array for millimeter wave mobile phone terminal |
| CN111725625A (en) * | 2020-05-13 | 2020-09-29 | 中国地质大学（武汉） | Dual-band Wi-Fi antenna designed based on multi-target evolution algorithm |
| CN114512806A (en) * | 2022-02-28 | 2022-05-17 | 歌尔智能科技有限公司 | Double-frequency ceramic antenna and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002013313A2 (en) * | 2000-08-07 | 2002-02-14 | Xtremespectrum, Inc. | Electrically small planar uwb antenna apparatus and system thereof |
| CN1703803A (en) * | 2002-11-27 | 2005-11-30 | 太阳诱电株式会社 | Antenna, dielectric substrate for antenna, radio communication card |
| CN201490342U (en) * | 2009-09-09 | 2010-05-26 | 东莞市太平洋计算机科技有限公司 | Portable miniature antenna of communication equipment |
-
2010
- 2010-07-26 CN CN2010102368541A patent/CN101916913A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002013313A2 (en) * | 2000-08-07 | 2002-02-14 | Xtremespectrum, Inc. | Electrically small planar uwb antenna apparatus and system thereof |
| CN1703803A (en) * | 2002-11-27 | 2005-11-30 | 太阳诱电株式会社 | Antenna, dielectric substrate for antenna, radio communication card |
| CN201490342U (en) * | 2009-09-09 | 2010-05-26 | 东莞市太平洋计算机科技有限公司 | Portable miniature antenna of communication equipment |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110892A (en) * | 2010-12-29 | 2011-06-29 | 上海大学 | Low-standing-wave ratio and ultra-wide band planar slot antenna |
| CN102110892B (en) * | 2010-12-29 | 2014-06-11 | 上海大学 | Low-standing-wave ratio and ultra-wide band planar slot antenna |
| CN103794854A (en) * | 2014-01-17 | 2014-05-14 | 复旦大学 | Compact UWB antenna with low cut-off frequency |
| CN103794854B (en) * | 2014-01-17 | 2016-04-20 | 复旦大学 | A kind of compact ultra-wideband antenna with low cut-off frequency |
| CN110098467A (en) * | 2019-04-28 | 2019-08-06 | 西安空间无线电技术研究所 | A kind of single feedback single layer circular polarization microstrip antenna of more orthogonal mode fusion broadening bandwidth |
| CN111541016A (en) * | 2020-04-09 | 2020-08-14 | 大连理工大学 | Multi-mode broadband patch antenna array for millimeter wave mobile phone terminal |
| CN111725625A (en) * | 2020-05-13 | 2020-09-29 | 中国地质大学（武汉） | Dual-band Wi-Fi antenna designed based on multi-target evolution algorithm |
| CN111725625B (en) * | 2020-05-13 | 2021-06-25 | 中国地质大学（武汉） | Dual-band Wi-Fi antenna designed based on multi-target evolution algorithm |
| CN114512806A (en) * | 2022-02-28 | 2022-05-17 | 歌尔智能科技有限公司 | Double-frequency ceramic antenna and electronic equipment |
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Application publication date: 20101215 |