CN101527392A - Double-frequency broadband E-shaped microstrip antenna - Google Patents
Double-frequency broadband E-shaped microstrip antenna Download PDFInfo
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- CN101527392A CN101527392A CN 200910071878 CN200910071878A CN101527392A CN 101527392 A CN101527392 A CN 101527392A CN 200910071878 CN200910071878 CN 200910071878 CN 200910071878 A CN200910071878 A CN 200910071878A CN 101527392 A CN101527392 A CN 101527392A
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- shaped patch
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Abstract
The invention provides a double-frequency broadband E-shaped microstrip antenna, comprising an E-shaped patch 3. A main feeder line 1 is directly connected to an SMA joint 2 of coaxial feeding point of the E-shaped patch 3, the SMA joint passes through the ground and medium and then is directly in contact with the intermediate arm of the E-shaped patch 3, another two arms of the E-shaped patch 3 are symmetrically distributed at the two sides of the feeding point and have a distance of L3 from the edge of the intermediate arm, the E-shaped patch 3 is connected with a T-shaped patch (bent T-shaped patch) 4 by loading to form a main radiating unit of the antenna, a width t is arranged between the E-shaped patch 3 and T-shaped patch (bent T-shaped patch), and a slot with width t2 and depth t1 is respectively arranged at the two sides of the joint between the T-shaped patch (bent T-shaped patch) and the E-shaped patch. The invention has relatively high gain, wide working frequency band, uniform current distribution, light weight and small volume, can effectively improve communication quality, is easily integrated with a circuit, and can be widely used for a portable device and in indoor coverage and wireless local area network.
Description
(1) technical field
The present invention relates to a kind of double frequency E-microstrip.Specifically a kind of being used in the indoor covering and WLAN (wireless local area network) of mobile communication system as low, medium gain, working frequency range is the microstrip antenna of 2400-2500 and 5100-5850MHz.
(2) background technology
There is following shortcoming in the antenna of at present same purposes: (1) requires the ratio of gains of antenna higher at present, such as the gain that 4-6dBi will be arranged.And existing domestic aerial and wireless lan antenna, mostly its technology is traditional monopole and doublet form, so directional diagram is reciprocity up and down.In practical application, almost all wastes of to wave radiation in fact upward, so gain is lower, and frequency band is narrow, Zeng Yi antenna wastes signal in this wise, thereby influences communication quality.(2) indoor covering and the wireless lan antenna that uses at present is the ceiling type antenna mostly, and its frequency band control ratio is difficulty, and the user wishes to adopt the double-frequency broadband antenna, equals to make full use of resource, improves antenna and uses flexibility.Present indoor covering and wireless lan antenna can not satisfy this demand.(3) at present the antenna that uses of user requires miniaturization, and the microstrip antenna manufacturing is simple, is convenient to integratedly, can well realize miniaturization.Present indoor covering and wireless lan antenna can not satisfy this demand.(4) present communication is more and more higher to the requirement of bandwidth, and present ceiling type antenna and domestic aerial can not satisfy present communication requirement, and particularly double frequency broadband high-gain aerial does not reach requirement.
(3) summary of the invention
The object of the present invention is to provide a kind of higher gain that has, working band is wide, and CURRENT DISTRIBUTION is even, can effectively improve the double-frequency broadband E-shaped microstrip antenna of communication quality.
The object of the present invention is achieved like this:
It comprises E shape paster 3, and main feeder 1 is connected to the coaxial feed point sub-miniature A connector 2 of E shape paster 3, and sub-miniature A connector passes the intermediate arm of ground and medium and E shape paster 3, and (width is W
1) directly contact, the length of two arms is L
1, other two arms of middle E shape paster 3 are distributed in the both sides of distributing point symmetrically, be L apart from the distance at intermediate arm edge
3, on E shape paster 3, connect T shape paster 4 by loading, constitute the primary radiation unit of antenna, the gap width between E shape paster 3 and the T shape paster is t, the both sides, junction of T shape paster and E shape paster have the width t of symmetry
2With degree of depth t
1Groove, the coupling edge width of E shape paster and T shape paster is W
5
The present invention can also comprise:
When the longer dimension of T shape paster, in the time of can not realizing miniaturization Design, adopt bending T shape paster structure, promptly two of T shape paster front of motor bendings reduce the cell size of antenna, thereby realize miniaturization Design.At this moment, the primary radiation unit comprises E shape paster and bending T shape paster.
The length and the width of two arms by fluting on the effective adjusting E shape paster and T shape paster (bending T shape paster) change the operating frequency and the bandwidth of operation of antenna high band and low-frequency range, realize the controllable operating of double frequency wideband microstrip antenna.
It is on 4.4 medium substrates that whole radiating element is printed on dielectric constant jointly.L
3Can change the working frequency range of E microstrip with t, can make this E shape antenna be operated in 5.1GHz～5.8GHz by simple adjusting.By regulating W
4Can make the T shape loaded microstrip antenna of design be operated in 2.4GHz～2.5GHz, but regulate t
1And t
2In time, can exert an influence to the CURRENT DISTRIBUTION of E shape paster, influences the radiation of E shape paster, generally in use, only regulates W
4Just can satisfy the radiance of low-frequency range with t.
Beneficial effect: (1) the present invention utilizes the electric wave conduction principle that electric wave is guided to T shape paster gradually, and the groove district comprises coupled zone t, excitation region t
2, radiation area L
3Because electric wave is along the direction radiation of guiding, its directional diagram concentrates on E shape paster and the T shape paster, so effectively increase the bandwidth of antenna and the radiation efficiency of antenna, higher by about 10% than the efficient of common microstrip antenna, the beamwidth of antenna of existing this application of the bandwidth ratio of antenna simultaneously is wide more than 2 times.(2) the present invention utilizes the electric wave conduction principle, utilizes the impedance bandwidth of characteristic increase microstrip antennas such as microstrip antenna fluting, utilizes the coupling parasitic character simultaneously, strengthens the current strength of T shape paster, and then increases its radiation bandwidth.(3) the present invention is omnidirectional antenna basically, can be installed in the Plastic Drum and the radome of Any shape in, because of its gain high, it is more satisfactory to cut directional diagram, and directional diagram can cover whole space, and CURRENT DISTRIBUTION is even, the realization non-blind area covers, and has improved communication quality greatly, has improved communication environment.(4) the present invention uses the form of microstrip antenna, and is in light weight, volume is little, it is integrated to be convenient to circuit, can be widely used in presenting small and exquisite shape in portable equipment and the indoor covering and WLAN (wireless local area network).
(4) description of drawings
Fig. 1 is the front schematic view of example of the present invention;
Fig. 2 is the side schematic view of example of the present invention;
Fig. 3 is an example schematic bottom view of the present invention;
Fig. 4 is the return loss test curve of example of the present invention;
Fig. 5 is the directional diagram of example of the present invention in the test of 5.1GHzE face;
Fig. 6 is the directional diagram of example of the present invention in the test of 5.1GHzH face;
Fig. 7 is the directional diagram of example of the present invention in the test of 5.5GHzE face;
Fig. 8 is the directional diagram of example of the present invention in the test of 5.5GHzH face;
Fig. 9 is the directional diagram of example of the present invention in the test of 5.85GHzE face;
Figure 10 is the directional diagram of example of the present invention in the test of 5.85GHzH face;
Figure 11 is the directional diagram of example of the present invention in the test of 2.4GHzE face;
Figure 12 is the directional diagram of example of the present invention in the test of 2.4GHzH face;
Figure 13 is the directional diagram of example of the present invention in the test of 2.5GHzE face;
Figure 14 is the directional diagram of example of the present invention in the test of 2.5GHzH face;
Figure 15 is the front schematic view of the structure of another example of the present invention.
(5) embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
Design principle based on E shape broad-band antenna, simplify the structure of repacking antenna, and the form of employing loading, the width of suitable selection coupling slot, the thickness and the dielectric constant of dielectric-slab, obtained good matching performance, then improved the structure of E shape paster, suitably at T shape paster and E shape paster junction fluting, and optimal design the shape and size of E shape paster and T shape paster, make it to become compact dual-frequency broadband E shape antenna, it is made up of excitation region, transmission range and two radiation fins, realizes the omnidirectional radiation characteristic.Because E shape paster original omnidirectional characteristic and T shape and the shared feed of E shape paster, make T shape loading paster can regard a pair of doublet (dipole) antenna as, from but high band and low-frequency range all have good omnidirectional radiation characteristic.At last for betterization of radiation characteristic of the antenna that makes design, the real realization of horizontal plane just evenly covers, and then takes to design groove antenna E shape with T shape paster place, makes it well to realize shared feed structure.
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is described in detail.
Among Fig. 1 to Fig. 3, wherein 1 is feeder cable, and 2 is feed connection (sub-miniature A connector), and 3 is E shape paster, and 4 are T shape loading paster (bending T shape paster).
Embodiment 1:
Shown in Fig. 1,2 and 3,50 Ω main feeders 1 are directly connected to the feed sub-miniature A connector 2 of microstrip antenna, pass ground level and dielectric-slab by sub-miniature A connector, directly contact with E shape paster.Regulate L
3, t
1And t
2Can determine the operating frequency and the bandwidth of operation of high band, be that the antenna of design is operated in 5.1GHz～5.8GHz, satisfies the communication needs of WLAN etc.
Adjust W
4Size can change the operating frequency of designed antenna in low-frequency range, work as W
4When narrower, antenna at low side resonance below 2.4GHz, when increasing W
4Width, the resonance point of antenna low side will move to high band.L
4Be the length of T shape paster, W
2Width for the feed arm of T shape paster, slit t is the distance between E shape paster and the T shape paster, change the main degree of coupling that changes between E shape paster and the T shape paster of size of t, the resonant bandwidth of its major decision low-frequency range, when t increases, resonant bandwidth is narrowed down, when t hour can make antenna that resonant bandwidth is preferably arranged.t
2The feed that is T shape paster inserts fluting slit, t
2High band there is significant effects.S is the distance that feed connection arrives E shape paster intermediate arm edge.
In order to reduce E shape and T shape radiation fin to the incident wave reflection, its shape is mainly taked suitable fluting shape, simultaneously, does not upwarp in order to make wave beam, concentrates on horizontal direction, has taked the fluting coupling of T shape and E shape and the mode that directly is coupled and combines.
In this example, Fig. 1 is of a size of: L
1=25.5mm; L
2=6.8mm; L
3=8mm; L
4=32mm; W
4=6.5mm; W
2=1.9mm; W
3=4mm; W
1=8mm; T=2.5mm; t
1=1.8mm; t
2=3.6mm.
Embodiment 2:
As shown in figure 15, according to the relation of antenna size and frequency (wavelength), the size of suitable change E shape antenna and the size of T antenna.This antenna can be applied in the mobile communication of GSM, WCDMA, CDMA2000 and TD-SCDMA.Concrete design size is for as shown in figure 15.L=120mm among Figure 15; W
3=36mm, L
1=58mm; W
1=18mm; L
3=5mm; T ≈ 4mm.The parameter of wherein bending T shape paster can be considered the symmetrical dipole antenna and determines.Two front of motor bendings of T shape paster realize miniaturization.
Embodiment 3:
As shown in Fig. 1 and Figure 15, the double-frequency broadband E-shaped antenna of proposition and T antenna also can be used as a kind of broadband omni-directional antenna and use.
Claims (2)
1, a kind of double-frequency broadband E-shaped microstrip antenna, it comprises E shape paster (3), it is characterized in that: main feeder (1) is connected to the coaxial feed point sub-miniature A connector (2) of E shape paster (3), sub-miniature A connector passes ground and directly contacts with the intermediate arm of medium with E shape paster (3), and other two arms of E shape paster (3) are distributed in the both sides of distributing point symmetrically, be L apart from the distance at intermediate arm edge
3, go up the primary radiation unit that connects T shape paster (4) formation antenna by loading at E shape paster (3), between E shape paster (3) and the T shape paster width clearance t is arranged, the both sides, junction of T shape paster and E shape paster have the width t of symmetry
2With degree of depth t
1Groove.
2, double-frequency broadband E-shaped microstrip antenna according to claim 1 is characterized in that: two front of motor bendings of described T shape paster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910071878 CN101527392B (en) | 2009-04-23 | 2009-04-23 | Double-frequency broadband E-shaped microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910071878 CN101527392B (en) | 2009-04-23 | 2009-04-23 | Double-frequency broadband E-shaped microstrip antenna |
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| Publication Number | Publication Date |
|---|---|
| CN101527392A true CN101527392A (en) | 2009-09-09 |
| CN101527392B CN101527392B (en) | 2012-08-22 |
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ID=41095145
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910071878 Expired - Fee Related CN101527392B (en) | 2009-04-23 | 2009-04-23 | Double-frequency broadband E-shaped microstrip antenna |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394352A (en) * | 2011-07-14 | 2012-03-28 | 东南大学 | Double-frequency broadband reconfigurable micro-strip antenna |
| CN102394347A (en) * | 2011-07-01 | 2012-03-28 | 中兴通讯股份有限公司 | Antenna |
| CN102683826A (en) * | 2012-05-22 | 2012-09-19 | 北京航空航天大学 | ]-E-shaped dual-frequency patch antenna with dual-stop band electromagnetic band-gap structure |
| CN102856640A (en) * | 2012-09-26 | 2013-01-02 | 电子科技大学 | High-isolation dual-polarization E-type microstrip antenna with spurious wafer |
| CN103036583A (en) * | 2011-10-08 | 2013-04-10 | 宏碁股份有限公司 | Communication electronic device and antenna structure thereof |
| CN103199339A (en) * | 2013-03-28 | 2013-07-10 | 哈尔滨工程大学 | Reactance loaded dual-band antenna |
| CN103682644A (en) * | 2013-11-29 | 2014-03-26 | 中国计量学院 | Multi-E-shaped double-frequency printing slot antenna |
| CN104538731A (en) * | 2015-02-05 | 2015-04-22 | 电子科技大学 | Multi-frequency high-isolation MIMO antenna |
| CN105071032A (en) * | 2015-08-25 | 2015-11-18 | 中国航空无线电电子研究所 | Miniaturization broadband microstrip antenna |
| CN107069202A (en) * | 2017-03-30 | 2017-08-18 | 天津中兴智联科技有限公司 | A kind of near field antenna |
| CN107994324A (en) * | 2017-11-29 | 2018-05-04 | 哈尔滨工程大学 | Miniature antenna applied to 5G mobile communication |
| WO2018103281A1 (en) * | 2016-12-09 | 2018-06-14 | 上海斐讯数据通信技术有限公司 | High-gain antenna |
| CN108417978A (en) * | 2018-02-14 | 2018-08-17 | 深圳市道通智能航空技术有限公司 | Unmanned plane built-in antenna and unmanned plane |
| CN113937475A (en) * | 2021-10-08 | 2022-01-14 | 南京邮电大学 | Microstrip patch antenna with wide impedance bandwidth and harmonic suppression function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2752981Y (en) * | 2004-09-09 | 2006-01-18 | 上海环达计算机科技有限公司 | Reverse E type plate antenna |
-
2009
- 2009-04-23 CN CN 200910071878 patent/CN101527392B/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394347A (en) * | 2011-07-01 | 2012-03-28 | 中兴通讯股份有限公司 | Antenna |
| CN102394352B (en) * | 2011-07-14 | 2014-01-08 | 东南大学 | Double-frequency broadband reconfigurable micro-strip antenna |
| CN102394352A (en) * | 2011-07-14 | 2012-03-28 | 东南大学 | Double-frequency broadband reconfigurable micro-strip antenna |
| CN103036583A (en) * | 2011-10-08 | 2013-04-10 | 宏碁股份有限公司 | Communication electronic device and antenna structure thereof |
| CN102683826A (en) * | 2012-05-22 | 2012-09-19 | 北京航空航天大学 | ]-E-shaped dual-frequency patch antenna with dual-stop band electromagnetic band-gap structure |
| CN102683826B (en) * | 2012-05-22 | 2014-04-30 | 北京航空航天大学 | ]-E-shaped dual-frequency patch antenna with dual-stop band electromagnetic band-gap structure |
| CN102856640A (en) * | 2012-09-26 | 2013-01-02 | 电子科技大学 | High-isolation dual-polarization E-type microstrip antenna with spurious wafer |
| CN102856640B (en) * | 2012-09-26 | 2014-06-04 | 电子科技大学 | High-isolation dual-polarization E-type microstrip antenna with spurious wafer |
| CN103199339A (en) * | 2013-03-28 | 2013-07-10 | 哈尔滨工程大学 | Reactance loaded dual-band antenna |
| CN103682644B (en) * | 2013-11-29 | 2015-07-15 | 中国计量学院 | Multi-E-shaped double-frequency printing slot antenna |
| CN103682644A (en) * | 2013-11-29 | 2014-03-26 | 中国计量学院 | Multi-E-shaped double-frequency printing slot antenna |
| CN104538731A (en) * | 2015-02-05 | 2015-04-22 | 电子科技大学 | Multi-frequency high-isolation MIMO antenna |
| CN105071032A (en) * | 2015-08-25 | 2015-11-18 | 中国航空无线电电子研究所 | Miniaturization broadband microstrip antenna |
| WO2018103281A1 (en) * | 2016-12-09 | 2018-06-14 | 上海斐讯数据通信技术有限公司 | High-gain antenna |
| CN107069202A (en) * | 2017-03-30 | 2017-08-18 | 天津中兴智联科技有限公司 | A kind of near field antenna |
| CN107069202B (en) * | 2017-03-30 | 2023-07-21 | 高新兴智联科技股份有限公司 | Near field antenna |
| CN107994324A (en) * | 2017-11-29 | 2018-05-04 | 哈尔滨工程大学 | Miniature antenna applied to 5G mobile communication |
| CN108417978A (en) * | 2018-02-14 | 2018-08-17 | 深圳市道通智能航空技术有限公司 | Unmanned plane built-in antenna and unmanned plane |
| CN108417978B (en) * | 2018-02-14 | 2023-08-11 | 深圳市道通智能航空技术股份有限公司 | Unmanned aerial vehicle built-in dual-frenquency antenna and unmanned aerial vehicle |
| CN113937475A (en) * | 2021-10-08 | 2022-01-14 | 南京邮电大学 | Microstrip patch antenna with wide impedance bandwidth and harmonic suppression function |
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| CN101527392B (en) | 2012-08-22 |
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