CN102110892A - Low-standing-wave ratio and ultra-wide band planar slot antenna - Google Patents
Low-standing-wave ratio and ultra-wide band planar slot antenna Download PDFInfo
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- CN102110892A CN102110892A CN2010106112017A CN201010611201A CN102110892A CN 102110892 A CN102110892 A CN 102110892A CN 2010106112017 A CN2010106112017 A CN 2010106112017A CN 201010611201 A CN201010611201 A CN 201010611201A CN 102110892 A CN102110892 A CN 102110892A
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Abstract
The invention relates to a low-standing-wave ratio and ultra-wide band planar slot antenna, which consists of a medium substrate (3), a micro-strip feeder conduction band and an elliptical annular feed source terminal (2) printed on a front surface of the medium substrate (3), and a metal ground plate adhered to the back of the medium substrate (3), wherein the micro-strip feeder conduction band consists of a 50-ohm micro-strip line, a graded micro-strip line having characteristic impedance graded to R (about 60-100) ohm linearly from 50 ohm, and a trifurcate micro-strip line conduction band; a wide slot is a polygonal and semi-elliptical combined slot, a lower edge of which is bumped inwards; the metal ground plate is provided with a sub-miniature-A (SMA) coaxial connector or an N-type coaxial connector; a conductor (a probe) in the connector penetrates through the medium substrate and is connected with the 50-ohm micro-strip line on the front surface of the antenna; and the connector is connected with a 50-ohm coaxial feeder externally to feed the antenna. The voltage standing-wave ratio of the antenna within a frequency band of 780MHz to 3,000MHz is not more than 1.5, thereby meeting the requirement of a national mobile communication system on a standing-wave ratio performance standard and being capable of covering each general frequency band of mobile communication. The low-standing-wave ratio and ultra-wide band planar slot antenna has a plane printing structure, is low in profile, simple in manufacturing and low in cost and is applicable to large-scale batch production.
Description
Technical field
The present invention relates to a kind of novelty that is used for mobile communication system and beautify flat plane antenna, particularly satisfy the low standing-wave ratio super-wide-band flat antenna of China Mobile.
Background technology
Microstrip antenna have planar structure, low, in light weight, the easy manufacturing of section, can with plurality of advantages such as microwave circuit is integrated, (write referring to the clock up time, microstrip antenna is theoretical and use publishing house of Xian Electronics Science and Technology University to have obtained extensive use under conventional environment, Xi'an, 1991).A lot of all channel antenna technology have been developed in recent years and (referring to the clock up time, Liang Xianling, it is flourish to prolong dawn, the super-wide-band flat antenna technology, the electric wave science journal, the 22nd volume, the 2nd phase, pp.308 – 315,2007.4), document (J.-Y. Sze and K.-L. Wong, Bandwidth enhancement of a microstrip line-fed printed wide-slot antenna, IEEE Trans. Antennas Propag. Vol. 49, No. 7, pp. 1020 – 1024, Jul. 2001) the wide seam antenna to a feed microstrip line comes widening frequency band, document (F.W.Yao, S.S.Zhong with fork shaped microstrip minor matters, W.Wang and X.L.Liang, Wideband slot antenna with a novel microstrip feed, Microwave Optical Technology Letters, 46 (3), pp.275-278 Aug.2005) comes the frequency band of broadening slit microstrip antenna with fan-shaped offset of microstrip feed and little band minor matters.It is standard that the bandwidth of above ultra-wideband antenna all is not more than 2 with voltage standing wave ratio.
It is less than 2 that many countries such as America and Europe require the mobile communication antenna voltage standing wave ratio.By this standard, lot of domestic and international company has developed a lot of indoor covering ultra wideband microstrip antennas.But China's mobile communication antenna is relatively strict to the voltage standing wave ratio performance requirement, requires its standing-wave ratio in bandwidth otherwise greater than 1.5.And existing indoor cover antenna still can not satisfy China's mobile communication system mostly to this low standing-wave ratio performance demands.
Summary of the invention
The object of the invention is to provide a kind of low standing-wave ratio super wide band plane slot antenna at the deficiency of prior art existence.It is not more than 1.5 at 800～3000MHz frequency range standing internal wave than all, thereby can cover the frequency band of each mobile communication system in the general frequency range of 800～3000MHz, as GSM(890～960MHz), DCS(1710～1880MHz), PCS(1850～1990MHz), UMTS(1920～2170MHz, WLAN(2400～2484MHz) and LTE(2600～2700MHz) etc.It has the planographic structure, and section is low, and is simple in structure, and cost is low, makes high conformity, is fit to large-scale mass production.
The present invention design is: based on the ultra-wideband antenna principle, realize that finite length minimizes and to the maximized practical application of dependence of angle.The present invention adopts custom-designed wide slit, and this wide slit is that polygon adds half elliptic combination slit, and slit bottom is protruding upward, and bossing is trapezoidal; This trapezoidal base angle size has key effect to antenna standing wave ratio, and the size of tuning this angle realizes the ultra broadband impedance operator.The microstrip feed line conduction band is connected and composed successively by one section 50 ohm microstrip, one section gradual change microstrip line and trident microstrip line conduction band, and the microstrip feed line terminal is the oval ring feed, and this has guaranteed ultra broadband coupling of antenna and 50 ohm of feeder lines.
According to above-mentioned inventive concept, the present invention has adopted following technical proposals:
A kind of low standing-wave ratio super wide band plane slot antenna is made of medium substrate, microstrip feed line conduction band and the oval ring feed terminal printed in the medium substrate front and the metal floor that is attached to the medium substrate back.It is characterized in that:
A. the microstrip feed line conduction band is made up of from gradual change microstrip line and trident microstrip line conduction band that 50 ohm of linearities are gradient to R ohm one section 50 ohm microstrip, characteristic impedance;
B. described feed terminal is the oval ring metal patch;
C. described metal floor is the metal patch that has wide slit;
D. described wide slit is that polygon adds the half elliptic combined shaped, and this shape bottom inwardly protruding is trapezoidal, and this trapezoidal base of going up is in microstrip feed line conduction band and oval ring feed terminal connecting place.
The microstrip feed line conduction band is connected to form from gradual change microstrip line and the trident microstrip line conduction band that 50 ohm of linearities are gradient to R ohm successively by one section 50 ohm microstrip, one section characteristic impedance.The length of one section 50 ohm microstrip conduction band is 2mm～15mm in the microstrip feed line conduction band; From 50 ohm of length to R ohm transition line conduction band is 20mm～40mm; Trident microstrip line conduction band longitudinal length is 3mm～20mm, and lateral length is 5mm～30mm; R is about 60 ~ 100(ohm).
The terminal that links to each other with the microstrip line conduction band is the oval ring metal patch, and its outer oval major semiaxis is 13mm～25mm, and semi-minor axis is 1mm～15mm; Interior oval major semiaxis is 13mm～25mm, and semi-minor axis is 1mm～15mm.
The relative dielectric constant of described medium substrate is 2～10; Thickness has only 0.5mm～3mm magnitude.
Described wide slit is that polygon adds half elliptic combination slit, its shape is basic shape with rectangle mainly, and this rectangular top is a half elliptic, its bottom inwardly protruding, bossing is that trapezoidal, the trapezoidal upper base and the horizontal edge projector distance of trident microstrip line conduction band are 0.5mm～5mm.
The bottom surface metal floor is provided with SMA or N type coaxial fitting, and the joint inner wire passes dielectric substrate and links to each other with 50 ohm microstrip conduction bands of antenna face; The external 50 ohm of coaxial feeders of this joint come antenna feed.
The present invention compared with prior art has following conspicuous outstanding substantive distinguishing features and remarkable advantage:
The present invention can realize that 780～3000MHz frequency band standing internal wave is not more than 1.5 than all, thereby satisfies domestic mobile communication system to the low standing-wave ratio performance demands of antenna, can cover each general frequency range of mobile communication.The present invention has adopted custom-designed polygon to add the slit of half elliptic combined shaped and the combination of oval ring feed terminal, main by changing the base angle a size of polygon inwardly protruding part, realized the ultra broadband characteristic of Antenna Impedance Matching, and has a planographic structure, section is low, simple in structure, cost is low, is fit to large-scale mass production.
Description of drawings
The front view of Fig. 1 antenna of the present invention;
The end view of Fig. 2 antenna of the present invention;
The concrete enforcement dimensional drawing of Fig. 3 antenna example of the present invention;
The standing-wave ratio curve chart of Fig. 4 antenna example;
The 880MHz directional diagram of Fig. 5 antenna example;
The 2150MHz directional diagram of Fig. 6 antenna example.
Embodiment and example
Details are as follows in conjunction with the accompanying drawings for the preferred embodiments of the present invention:
Embodiment one: referring to Fig. 1 and Fig. 2, a kind of low standing-wave ratio super wide band plane slot antenna of local standing-wave ratio super wide band plane slot antenna is made of medium substrate 3, microstrip feed line conduction band and the oval ring feed terminals 2 printed in medium substrate 3 fronts and the metal floor that is attached to medium substrate 3 backs.The microstrip feed line conduction band is made up of from gradual change microstrip line and trident microstrip line conduction band that 50 ohm of linearities are gradient to R ohm one section 50 ohm microstrip, characteristic impedance; Described feed terminal 2 is the oval ring metal patch; Described metal floor 6 is for having the metal patch in wide slit 1; Described wide slit 1 adds the half elliptic combined shaped for polygon, and this shape bottom inwardly protruding is trapezoidal, and this trapezoidal base of going up is in microstrip feed line conduction band and oval ring feed terminal 2 connecting places.
Embodiment two: present embodiment and example 1 are basic identical, and this low standing-wave ratio super wide band plane slot antenna is by the microstrip feed line conduction band that is printed on medium substrate 3 fronts and oval ring feed terminal 5, medium substrate 3, constitute with the metal floor 2 that has wide slit 1.The microstrip feed line conduction band is gradient to R(about 60～100 by one section 50 ohm microstrip, characteristic impedance from 50 ohm of linearities) ohm gradual change microstrip line and trident microstrip line conduction band form.Wide slit 1 adds half elliptic combination slit for polygon, and its shape is basic shape with rectangle mainly, this rectangular bottom inwardly protruding.Metal floor 2 is provided with SMA or N type coaxial fitting 4, and joint 4 inner wires (probe) pass dielectric substrate and link to each other with 50 ohm microstrip conduction bands of antenna face.These joint 4 external 50 ohm of coaxial feeders come antenna feed.
The concrete size of example antenna is shown among Fig. 3.The medium substrate material of this example antenna is FR-4, and its relative dielectric constant is 4.4, and substrate thickness is 1.6mm.
Fig. 4 is the standing-wave ratio figure of this concrete antenna example emulation.As seen from the figure, compare all less than 1.5 at 780MHz～3000MHz frequency range standing internal wave.
Fig. 5 and Fig. 6 are the emulation directional diagram of this concrete antenna example at two frequencies.Can see that by figure the lobe of directional diagram helps enlarging the coverage of antenna like this than broad.
Claims (6)
1. one kind low standing-wave ratio super wide band plane slot antenna is made of medium substrate (3), microstrip feed line conduction band and the oval ring feed terminal (2) printed in medium substrate (3) front and the metal floor that is attached to medium substrate (3) back; It is characterized in that:
A. the microstrip feed line conduction band is made up of from gradual change microstrip line and trident microstrip line conduction band that 50 ohm of linearities are gradient to R ohm one section 50 ohm microstrip, characteristic impedance;
B. described feed terminal (2) is the oval ring metal patch;
C. described metal floor (6) is for having the metal patch of wide slit (1);
D. described wide slit (1) adds the half elliptic combined shaped for polygon, and this shape bottom inwardly protruding is trapezoidal, and this trapezoidal base of going up is in microstrip feed line conduction band and oval ring feed terminal (2) connecting place.
2. low standing-wave ratio super wide band plane slot antenna according to claim 1, the length that it is characterized in that one section 50 ohm microstrip in the described microstrip line conduction band (5) is 2mm～15mm; Length from 50 ohm to the R ohm microstrip is 20mm～40mm; Trident microstrip line conduction band longitudinal length is 3mm～20mm, and lateral length is 5mm～30mm; The span of R is 60～100 ohm.
3. low standing-wave ratio super wide band plane slot antenna according to claim 1 is characterized in that in the oval ring feed terminal (2), and outer oval major semiaxis is 13mm～25mm, and semi-minor axis is 1mm～15mm; Interior oval major semiaxis is 13mm～25mm, and semi-minor axis is 1mm～15mm.
4. low standing-wave ratio super wide band plane slot antenna according to claim 1, the relative dielectric constant that it is characterized in that described medium substrate (3) is 2～10; Thickness has only 0.5mm～3mm magnitude.
5. low standing-wave ratio super wide band plane slot antenna according to claim 1, it is characterized in that described wide slit (1) adds the half elliptic combined shaped for polygon, with rectangle is basic shape, this rectangular top margin is a half elliptic, its base inwardly protruding, bossing is that trapezoidal, the trapezoidal upper base and the horizontal edge projector distance of trident microstrip line conduction band are 0.5mm～5mm.
6. low standing-wave ratio super wide band plane slot antenna according to claim 1, it is characterized in that bottom surface metal floor (6) is provided with SMA or N type coaxial fitting (4), this joint (4) inner wire passes dielectric substrate (3) and links to each other with the 50 ohm microstrip conduction bands in microstrip feed line (5) front; The external 50 ohm of coaxial feeders of this joint (4) come antenna feed.
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| CN201010611201.7A CN102110892B (en) | 2010-12-29 | 2010-12-29 | Low-standing-wave ratio and ultra-wide band planar slot antenna |
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| CN201010611201.7A CN102110892B (en) | 2010-12-29 | 2010-12-29 | Low-standing-wave ratio and ultra-wide band planar slot antenna |
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| CN102110892A true CN102110892A (en) | 2011-06-29 |
| CN102110892B CN102110892B (en) | 2014-06-11 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820529A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Radar antenna and radar system |
| CN104022359A (en) * | 2014-05-22 | 2014-09-03 | 电子科技大学 | Design of elliptical improved annular patch-based ultra-wideband antenna |
| CN104051849A (en) * | 2014-07-10 | 2014-09-17 | 重庆大学 | Compact broadband octagonal groove antenna |
| CN104617393A (en) * | 2015-02-09 | 2015-05-13 | 厦门大学 | Polygonal defected ground structure ultra-broadband antenna based on arc-shaped branch node loading |
| CN105186134A (en) * | 2015-09-06 | 2015-12-23 | 哈尔滨工业大学 | Broadband antenna |
| CN105206921A (en) * | 2015-08-31 | 2015-12-30 | 四川中电昆辰科技有限公司 | Ultra wide band antenna |
| CN107069204A (en) * | 2017-04-21 | 2017-08-18 | 吉林医药学院 | A kind of oval gap ultra wide planar slot antenna with hierarchic structure |
| CN107196056A (en) * | 2017-06-23 | 2017-09-22 | 天津七六四通信导航技术有限公司 | Small-sized plane ultra-wideband antenna |
| CN108110427A (en) * | 2018-02-06 | 2018-06-01 | 吉林医药学院 | A kind of double band planar slot antennas of butterfly terminal |
| CN109149087A (en) * | 2018-08-22 | 2019-01-04 | 广东工业大学 | A kind of low section high-gain ultra-wideband antenna |
| CN109560378A (en) * | 2018-12-08 | 2019-04-02 | 上海电力学院 | A kind of miniaturization Y type patch ultra-wideband monopole antenna |
| CN109786956A (en) * | 2019-01-24 | 2019-05-21 | 厦门大学嘉庚学院 | Raw rectangular slot Fractal array ultra-wide band antenna |
| 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 |
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| US20050280582A1 (en) * | 2004-06-22 | 2005-12-22 | Powell Johnna D | Differential and single ended elliptical antennas |
| EP1826869A1 (en) * | 2006-02-28 | 2007-08-29 | Mitsumi Electric Co., Ltd. | Broadband antenna unit comprising a ground plate having a lower portion where both side corner portions are deleted |
| CN101916913A (en) * | 2010-07-26 | 2010-12-15 | 天津职业技术师范大学 | Ultra-wide band microstrip patch antenna |
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2010
- 2010-12-29 CN CN201010611201.7A patent/CN102110892B/en not_active Expired - Fee Related
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| US20050280582A1 (en) * | 2004-06-22 | 2005-12-22 | Powell Johnna D | Differential and single ended elliptical antennas |
| EP1826869A1 (en) * | 2006-02-28 | 2007-08-29 | Mitsumi Electric Co., Ltd. | Broadband antenna unit comprising a ground plate having a lower portion where both side corner portions are deleted |
| CN101916913A (en) * | 2010-07-26 | 2010-12-15 | 天津职业技术师范大学 | Ultra-wide band microstrip patch antenna |
Non-Patent Citations (1)
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| NAZLI, H. ET AL.: "An Improved Design of Planar Elliptical Dipole Antenna for UWB Applications", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820529A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Radar antenna and radar system |
| CN102820529B (en) * | 2012-07-31 | 2015-08-26 | 深圳光启高等理工研究院 | A kind of radar antenna and radar system |
| CN104022359A (en) * | 2014-05-22 | 2014-09-03 | 电子科技大学 | Design of elliptical improved annular patch-based ultra-wideband antenna |
| CN104051849A (en) * | 2014-07-10 | 2014-09-17 | 重庆大学 | Compact broadband octagonal groove antenna |
| CN104051849B (en) * | 2014-07-10 | 2016-04-27 | 重庆大学 | A kind of Compact type broadband octangle slot antenna |
| CN104617393A (en) * | 2015-02-09 | 2015-05-13 | 厦门大学 | Polygonal defected ground structure ultra-broadband antenna based on arc-shaped branch node loading |
| CN104617393B (en) * | 2015-02-09 | 2017-03-15 | 厦门大学 | Based on the polygon defect ground structure ultra-wideband antenna that arcuation minor matters are loaded |
| CN105206921A (en) * | 2015-08-31 | 2015-12-30 | 四川中电昆辰科技有限公司 | Ultra wide band antenna |
| CN105206921B (en) * | 2015-08-31 | 2017-02-22 | 四川中电昆辰科技有限公司 | Ultra wide band antenna |
| CN105186134A (en) * | 2015-09-06 | 2015-12-23 | 哈尔滨工业大学 | Broadband antenna |
| CN107069204A (en) * | 2017-04-21 | 2017-08-18 | 吉林医药学院 | A kind of oval gap ultra wide planar slot antenna with hierarchic structure |
| CN107196056A (en) * | 2017-06-23 | 2017-09-22 | 天津七六四通信导航技术有限公司 | Small-sized plane ultra-wideband antenna |
| CN107196056B (en) * | 2017-06-23 | 2023-05-23 | 天津七六四通信导航技术有限公司 | Small planar ultra-wideband antenna |
| CN108110427A (en) * | 2018-02-06 | 2018-06-01 | 吉林医药学院 | A kind of double band planar slot antennas of butterfly terminal |
| CN108110427B (en) * | 2018-02-06 | 2023-12-15 | 吉林医药学院 | Dual-broadband planar slot antenna for butterfly terminal |
| CN109149087A (en) * | 2018-08-22 | 2019-01-04 | 广东工业大学 | A kind of low section high-gain ultra-wideband antenna |
| CN109560378A (en) * | 2018-12-08 | 2019-04-02 | 上海电力学院 | A kind of miniaturization Y type patch ultra-wideband monopole antenna |
| CN109786956A (en) * | 2019-01-24 | 2019-05-21 | 厦门大学嘉庚学院 | Raw rectangular slot Fractal array ultra-wide band antenna |
| 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 |
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