CN101916913A - Ultra-wide band microstrip patch antenna - Google Patents

Ultra-wide band microstrip patch antenna Download PDF

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CN101916913A
CN101916913A CN 201010236854 CN201010236854A CN101916913A CN 101916913 A CN101916913 A CN 101916913A CN 201010236854 CN201010236854 CN 201010236854 CN 201010236854 A CN201010236854 A CN 201010236854A CN 101916913 A CN101916913 A CN 101916913A
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patch
rectangular
chamfer
antenna
ultra
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CN 201010236854
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Chinese (zh)
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王利强
郑宏兴
马兴兵
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天津职业技术师范大学
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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

一种超宽带微带贴片天线 An ultra-wideband microstrip patch antenna

技术领域 FIELD

[0001] 本发明涉及一种在通信系统中使用的微带天线,尤其涉及一种含有椭圆缝隙耦合结构的超宽带微带贴片天线。 [0001] The present invention relates to a microstrip antenna for use in a communication system, particularly to ultra-wideband microstrip patch antenna oval slot containing a coupling structure.

背景技术 Background technique

[0002] 随着雷达、精确制导、遥感和无线电通信行业的迅猛发展,对宽频带、小型化微带贴片天线的需要变得越来越迫切。 [0002] With the radar, precision-guided, rapid development of remote sensing and wireless communications industry, the need for wide band microstrip patch antenna miniaturization is becoming increasingly urgent. 在各种拓展微带天线带宽、减小天线尺寸的方法中,贴片天线上开槽的方法得到了广泛的应用。 In the method of expansion of a variety of microstrip antenna bandwidth, reducing the antenna size, the method of the slotted patch antenna has been widely used.

[0003] T. Huynh 和K. -F. Lee 二位作者于1995 年在《Electronics Letters》第31 卷第16 期提出了一种U 型槽微带贴片天线(T. Huynh and K. -F. Lee, Single-layer single-patch wideband microstrip antenna, Electronics Letters, 1995, 31 (16) : 1310-1312),童芸等四位作者于2008年在《微波学报》第24卷第4期提出了一个局部铜箔加介质层、大部分为空气层的U型槽微带贴片天线,该改进后的贴片天线仍存在外形尺寸较大的问题,这与卫星通信、移动通信应用中的器件小型化要求是不符合的。 . [0003] T. Huynh and K. -F Lee two authors in 1995 in "Electronics Letters" Volume 31, No. 16 presents a U-slot microstrip patch antenna (T. Huynh and K. - F. Lee, Single-layer single-patch wideband microstrip antenna, Electronics Letters, 1995, 31 (16): 1310-1312), Tong Yun and other four authors in 2008. "microwave Journal" Vol. 24 No. 4 proposed copper plus a local dielectric layer, most of the U-shaped groove of air layer microstrip patch antenna, the patch antenna to improve the problems are still large dimensions, which satellite communications, mobile communications applications miniaturization of the device is not in line.

发明内容 SUMMARY

[0004] 本发明针对现有技术的不足,提出一种同轴探针馈电的超宽带微带贴片天线,该天线采用椭圆缝隙耦合结构增大低频谐振点微带贴片天线上表面电流的路径长度,以达到降低谐振频率、减小天线尺寸的目的,相同工作频率及带宽下,比前面提到的局部铜箔加介质层、大部分为空气层的U型槽矩形贴片天线的尺寸至少减小13%。 [0004] The present invention addresses the deficiencies of the prior art, to provide a coaxial probe fed ultra-wideband microstrip patch antenna, the antenna structure coupled elliptic slits increase the surface currents on the low frequency patch antenna resonance point path length, in order to reduce the resonance frequency, the object of reducing the size of the antenna, the same operating frequency and bandwidth, the dielectric layer than the local copper plus previously mentioned, most of the U-shaped groove of rectangular patch antenna air layer size reduction of at least 13%.

[0005] 本发明采用如下的技术方案: [0005] The present invention adopts the following technical solution:

[0006] 一种用于通信系统的椭圆缝隙耦合超宽带微带贴片天线,包括一个与同轴馈电探针相接的椭圆贴片,一个中心部位被挖空的矩形切角贴片。 [0006] A UWB oval slot coupled microstrip patch antenna system comprising a probe in contact with the feed patch a coaxial oval, rectangular central portion is hollowed out of a corner cut patch. 椭圆贴片位于矩形切角贴片的挖空部位,矩形切角贴片挖空部位的图形为椭圆,椭圆贴片与矩形切角贴片置于同一基板的上表面。 The rectangular patch chamfer oval patch hollowed portion, graphics portion hollowed rectangular patch chamfer is an ellipse with the rectangular patch and the patch is placed on the chamfer surface of the same substrate. 矩形切角贴片的椭圆切孔与椭圆贴片的圆心均位于矩形切角贴片的纵向中轴线上,两个圆心不在同一点,两个椭圆之间有缝隙,椭圆切孔与椭圆贴片的长轴均位于水平方向,与矩形切角贴片的上下边平行。 Cutaway rectangular patch oval hole cut in the center of the patch of the ellipse are located on the longitudinal central axis of the rectangular patch chamfer, two are not the same center point, a gap between two oval, elliptical and oval cutouts patch the major axis are located in the horizontal direction, and upper and lower edges of the rectangular patch chamfer parallel. 矩形切角贴片下边的左右两个角被切除,切除部位尺寸相同,以矩形切角贴片的纵向中轴线为中心呈左右对称。 Rectangular patch below the chamfer around two corners are cut the same size of the excision site in a rectangular patch chamfer centered on the longitudinal axis symmetrical form.

[0007] 本发明的有益效果是,椭圆缝隙耦合微带贴片天线采用椭圆缝隙耦合结构增大表面电流在天线贴片上的路径长度,降低天线尺寸,实现小型化。 Advantageous Effects [0007] The present invention is an elliptical slot coupled microstrip patch antenna coupling slot structure increases elliptic surface current path length in the patch antenna, reducing the size of the antenna can be miniaturized. 同时通过缝隙耦合方式,阻断直流干扰信号在矩形切角贴片上的电荷存储,提高天线的抗干扰能力。 At the same time through the slot coupling, DC blocking interfering signal charge stored on a rectangular patch chamfer, to improve the anti-interference ability of the antenna.

附图说明 BRIEF DESCRIPTION

[0008] 下面结合附图对本发明进一步说明。 [0008] DRAWINGS The present invention is further described.

[0009] 图1是本发明超宽带微带贴片天线的俯视图。 [0009] FIG. 1 is an ultra-wideband microstrip patch antenna according to the present invention, a plan view.

[0010] 图2是本发明超宽带微带贴片天线的正视图。 [0010] FIG. 2 is an ultra-wideband microstrip patch antenna according to the present invention, a front view. [0011] 图3是本发明超宽带微带贴片天线在频带内的输入反射损耗的仿真与测试图。 [0011] FIG. 3 is an ultra-wideband microstrip patch antenna according to the present invention, simulation and test pattern input return loss in the frequency band.

[0012] 图中:10_超宽带微带贴片天线,20-介质板,11-中心部位被挖空的矩形切角贴片,111-矩形切角贴片11的左边,112-矩形切角贴片11的上边,113-矩形切角贴片11的右边,114-矩形切角贴片11的右下切角边,115-矩形切角贴片11的下边,116-矩形切角贴片11的左下切角边,12-椭圆贴片,121-椭圆贴片上同轴探针的馈电点,30-同轴探针, 40-接地板,50-同轴线馈电接地端。 [0012] FIG.: 10_ ultra-wideband microstrip patch antenna, a dielectric plate 20, 11 of the central portion is hollowed rectangular patch chamfer, chamfer left 111- rectangular patch 11, a rectangular cut 112- the upper corner of the patch 11, the right 113- rectangular patch chamfer 11, a lower right corner cutting 114- rectangular patch chamfer edge 11, 115- rectangular patches lower chamfer 11 of chamfer rectangular patch 116- the lower left corner cutting edges 11, 12 oval patch, patch 121- elliptical feeding point of the coaxial probe, 30- coaxial probe, the ground plate 40, 50 coaxial feeding ground.

具体实施方式 detailed description

[0013] 图1为本发明提出的椭圆缝隙耦合超宽带微带贴片天线10的俯视图,图2为椭圆缝隙耦合超宽带微带贴片天线10的正视图,超宽带微带贴片天线10置于介质板20上,呈左右对称结构,包括中心部位被挖空的矩形切角贴片11和椭圆贴片12,矩形切角贴片11的中心被挖空部分的图形为椭圆,其圆心与椭圆贴片12的圆心均位于矩形切角贴片11的纵向中轴线上,但两个圆心不在同一点,长轴均与矩形切角贴片11的上下边平行,两个椭圆之间有缝隙。 A top view [0013] FIG. 1 of the present invention proposed an elliptical aperture-coupled microstrip patch antenna ultra wideband FIG. 10, FIG. 2 oval coupling slot ultra-wideband microstrip antenna 10 is a front view, ultra-wideband microstrip patch antenna 10 disposed on the dielectric plate 20, as a symmetrical structure including a rectangular central portion is hollowed out oval patch chamfer 12 and patches 11, rectangle chamfer 11 is hollowed center patch pattern portion of an ellipse with a center the center of the elliptical patch 12 are located in a rectangular patch chamfer longitudinal central axis 11, but the two are not the same center point, major axis of each rectangular patch chamfer 11 parallel upper and lower sides, there are between two oval gap. 需要注意的是,矩形切角贴片11的被挖空部分仅限于矩形切角贴片11自身。 It should be noted that the patch is hollowed rectangular corner cutting portion 11 is limited to a rectangular patch 11 Cutaway itself.

[0014] 中心部位被挖空的矩形切角贴片11包括左边111、上边112、右边113、右下切角边114、下边115和左下切角边116。 [0014] The central portion is hollowed rectangular patch 11 comprises a chamfer 111 on the left, upper side 112, right side 113, a lower right corner cutting edge 114, bottom 115 and lower left corner cutting edge 116. 右下切角边114与左下切角边116尺寸相同,位于矩形切角贴片11的纵向中轴线两侧,呈左右对称。 Lower right corner cutting edge 114 and a lower left corner cutting edge 116 the same size, both sides of the longitudinal axis 11 of the rectangular patch chamfer, was symmetrical. 矩形切角贴片11与椭圆贴片12之间通过中间缝隙耦合,实现阻抗匹配。 Rectangular patch chamfer 12 between the patch 11 and the elliptic slits through intermediate coupling, impedance matching is achieved.

[0015] 椭圆贴片12水平放置,长轴与矩形切角贴片11的上下边平行,同轴探针30通过在椭圆贴片12上的馈电点121与椭圆贴片12相接,与矩形切角贴片11进行缝隙耦合,达到阻抗匹配。 [0015] oval patch 12 disposed horizontally, the long axis of the rectangular patch chamfer 11 on the lower side in parallel, coaxial probe 30 by the patch 12 on the elliptical feeding point 121 in contact with the ellipse patch 12, and patch chamfer 11 rectangular slot coupling impedance matching.

[0016] 椭圆缝隙耦合超宽带微带贴片天线10置于介质板20的上表面,介质板20的下表面与接地板40之间是空气,介质板20厚度均勻,介质板20与接地板40之间的空气层均勻, 各处厚度相同,介质板20与接地板40平行。 [0016] Ultra wideband elliptical aperture-coupled microstrip patch antenna 10 placed in the surface of the ground plane on the surface of the dielectric plate, the dielectric plate 20 of a uniform thickness of the air 20, 20 between the dielectric plate 40, the dielectric plate 20 and ground plane uniformly between the air layer 40, around the same thickness, the dielectric plate 20 and ground plate 40 parallel.

[0017] 信号通过同轴探针30在椭圆贴片12上的馈电点121进入椭圆贴片12,进而利用椭圆缝隙耦合与矩形切角贴片11实现阻抗匹配,同轴线馈电接地端50与接地板40相连。 [0017] The signals through the coaxial probe 12 30121 into the oval patch at the feed point on the patch 12 oval, elliptic and further coupled to the rectangular slot 11 to achieve impedance matching chamfer patch, coaxial feeding ground 50 and 40 are connected to the ground plane.

[0018] 本发明的一个较佳实施例为基板20的介电常数为3. 2,厚度为1. 14mm,正切损耗为0. 003,基板20与接地板40平行,基板20与接地板40之间为空气层,厚度为IOmm ;该椭圆缝隙耦合超宽带微带贴片天线10的整体结构是以矩形切角贴片11的纵向中轴线为基准呈左右对称的,矩形切角贴片11的左边111、右边113长度为27. 3mm,矩形切角贴片11 的上边112的长度为80mm,矩形切角贴片11的下边115的长度为40mm,因为矩形切角贴片11的右下切角边114、左下切角边116是对称结构,下面以右下切角边114为例说明,右下切角边114与矩形切角贴片11的右边113的交点到下边115的垂直距离为9. 7mm,下边115与右下切角边114的交点到右边113的垂直距离为20mm ;矩形切角贴片11的被挖空部位为椭圆图形,其圆心位于矩形切角贴片11的纵向中轴线上,长轴与矩形切角贴片11的上下边平行,椭圆切孔 [0018] A preferred embodiment of the present invention, the substrate 20 is a dielectric constant of 3.2, a thickness of 1. 14mm, the loss tangent of 0.003, and the substrate 20 parallel to the ground plate 40, the substrate 20 and the ground plate 40 an air layer between the thickness IOmm; ultra-wideband coupling of the elliptical slot microstrip patch antenna 10, the overall configuration is rectangular patch chamfer longitudinal axis 11 as a reference for the symmetrical, rectangular patches chamfer 11 the left side 111, 113 of the right length, the length of the chamfer 27. 3mm rectangular patches 11 of the upper 112 is 80mm, the length of the rectangular lower chamfer 115 of the patch 11 is 40mm, as the lower right rectangular patch chamfer cut 11 corners 114, the lower left corner cutting edge 116 is a symmetrical structure, the following lower right corner cutting edge 114 as an example, the patch 11 on the right side 114 of the lower right corner cutting chamfer the intersection of the rectangle 113 to the vertical distance 115 is below 9. 7mm, the lower right corner cutting edge 115 and lower edge 114 to the intersection of the right vertical distance 113 is 20mm; rectangular patch chamfer portion 11 is hollowed out oval pattern with a center of the rectangular patch chamfer longitudinal central axis 11 of the major axis of the rectangular patch chamfer 11 on the lower side in parallel, elliptical cutouts 圆心与矩形切角贴片11的下边115的垂直距离为16mm,长半轴长度为18mm,短半轴长度为12. 6mm ;椭圆贴片12的圆心位于矩形切角贴片11的纵向中轴线上,其长轴与矩形切角贴片11的上下边平行,圆心与矩形切角贴片11的下边115的垂直距离为10mm,长半轴长度为8mm,短半轴长度为2. 4mm ;同轴探针30在椭圆贴片12上的馈电点121位于矩形切角贴片11的纵向中轴线上,与矩形切角贴片11的下边115的垂直距离为9. 04mm。 Rectangular center vertical distance below the chamfer 115 of the patch 11 is 16mm, the length of the semimajor axis of 18mm, a length of the short axle 12. 6mm; elliptical center of the rectangular patch chamfer longitudinal center axis 11 of the patch 12 on its long axis 11 on the lower side of the rectangular patch chamfer parallel to the center of the lower side 11 of the rectangular patch chamfer vertical distance 115 is 10mm, the length of the semimajor axis of 8mm, a length of a short axle 2. 4mm; 30 coaxial probe feed point 121 on the ellipse 12 of the rectangular patch chamfer longitudinal central axis 11 of the patch, rectangular patch 11 of the vertical distance from the chamfer 115 is below 9. 04mm.

[0019] 该贴片天线的中心工作频率为2. 7GHz,在频段2. IlGHz〜3. 30GHz上输入反射损耗小于-10dB,天线的相对阻抗带宽达44%。 [0019] The center operating frequency of the patch antenna 2. 7GHz, input return loss less than -10dB on a frequency band 2. IlGHz~3. 30GHz, relative impedance bandwidth of the antenna up to 44%.

[0020] 图3是本发明提出的椭圆缝隙耦合超宽带微带贴片天线10的输入反射损耗的仿真与测试图。 [0020] FIG. 3 is proposed by the present invention coupled to an elliptical slot ultra-wideband microstrip patch antenna input return loss of the test simulation and FIG. 10. 由图3可知,本发明实施方式中超宽带微带贴片天线10具有良好的输入反射损耗效果,从曲线IsiIl可观察到,在超宽带频带范围内的输入反射损耗绝对值大于10,而在通带频段外,信号输入反射损耗绝对值小于10。 Seen from FIG. 3, embodiments of the present invention super wideband microstrip patch antenna 10 having good input return loss effect, can be observed from the curve to IsiIl, input return loss in the ultra wideband frequency range of absolute value greater than 10, and the through- frequency band, the absolute value of the signal input return loss of less than 10. 由此说明椭圆缝隙耦合超宽带微带贴片天线10在所选频带内具有良好的阻抗匹配效果。 Whereby the elliptic aperture coupling ultra-wideband microstrip patch antenna 10 has a good impedance match within a selected frequency band.

Claims (3)

  1. 一种超宽带微带贴片天线,其特征包括一个与同轴馈电探针相接的椭圆贴片,一个中心部位被挖空的矩形切角贴片,椭圆贴片位于矩形切角贴片的被挖空部位,矩形切角贴片被挖空部位的图形为椭圆,椭圆贴片与矩形切角贴片位于同一基板的上表面。 An ultra-wideband microstrip patch antenna, characterized by comprising a coaxial contact probe fed patches ellipse, a rectangular central portion is hollowed out chamfer patch, the patch of the rectangular oval patch chamfer is hollowed out portion, a rectangular patch is hollowed portion chamfer pattern is an ellipse with the rectangular patch and the patch is located on the chamfer surface of the same substrate.
  2. 2.根据权利要求1所述的一种超宽带微带贴片天线,其特征在于,椭圆切孔与椭圆贴片的圆心均位于矩形切角贴片的纵向中轴线上,两个圆心不在同一点,两个椭圆之间有缝隙,椭圆切孔与椭圆贴片的长轴均在水平方向,且与矩形切角贴片的上下边平行。 2. An ultra-wideband microstrip patch antenna according to claim 1, characterized in that the ellipse of the elliptical cutouts are located in the center of the patch longitudinal central axis of the rectangular patch chamfer, not on the same two center that there are gaps between the two oval, elliptical cutouts are major axis of the ellipse of the patch in the horizontal direction, and a rectangular patch chamfer parallel upper and lower edges.
  3. 3.根据权利要求1所述的一种超宽带微带贴片天线,其特征在于,矩形切角贴片的下边左右两个角被切除,切除部位尺寸相同,以矩形切角贴片的纵向中轴线为中心呈左右对称。 3. An ultra-wideband microstrip patch antenna according to claim 1, characterized in that the lower left corner cut rectangular patch two corners are cut the same size of the excision site in a rectangular patch longitudinal chamfer a central axis symmetrical form.
CN 201010236854 2010-07-26 2010-07-26 Ultra-wide band microstrip patch antenna CN101916913A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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 (4)

* Cited by examiner, † Cited by third party
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 Compact ultrawideband antenna having a low cutoff frequency

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