CN100463289C - Plane helical microstrip antenna for 3G system mobile terminal - Google Patents
Plane helical microstrip antenna for 3G system mobile terminal Download PDFInfo
- Publication number
- CN100463289C CN100463289C CNB2006100713714A CN200610071371A CN100463289C CN 100463289 C CN100463289 C CN 100463289C CN B2006100713714 A CNB2006100713714 A CN B2006100713714A CN 200610071371 A CN200610071371 A CN 200610071371A CN 100463289 C CN100463289 C CN 100463289C
- Authority
- CN
- China
- Prior art keywords
- row
- medium substrate
- size
- hole
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Aerials (AREA)
Abstract
This invention relates to a plane helical microstrip aerials in 3G system mobile terminal, the character of which is that the dimension is small, strip width is up to 250MHz, which can cover all the transmitting-receiving frequency band plane helical microstrip aerials in 3G system mobile terminal. And the mircrostrip aerials al has the double faced medium base board, one face is the spiral medium base board, the other face is the photon with interval medium base board, the base board is 4.9-5.1cm*4.9-5.1cm; on the spiral medium base board there arranges two arms, two borders of the arm are composed of spirals whose original angles' errand is pi/2, and the clearance between two spiral original lines is 0.2-0.4cm, the distance from the spiral original line to the spiral terminal line is 1.2-1.4cm; on the photon with interval medium base board there arranges 6 rectangle holes of 2 rows and 3 lists, the length of three rectangle holes in the 1 rows are all 2.1-2.3cm,and the length of three rectangle holes in the 2 rows are all 1.5-1.7cm. The width of the 1,2,3 list is 0.8- 1.0,1.3-1.5,1.4-1.6cm.
Description
Technical field
The present invention relates to a kind of microstrip antenna, especially relate to a kind of plane helical microstrip antenna of the 3G of being used for system and mobile terminal.
Background technology
Along with the development of wireless communication system and user number, higher requirement is proposed the system communication capacity.For this reason, people have proposed 3-G (Generation Three mobile communication system), and the WCDMA that wherein adopts the Direct-Spread technology also provides broadband multimedia services such as image, data except traditional voice service is provided.The operating frequency range of WCDMA system radio frequency is 1920～2170MHz, frequency range reaches 250MHz, and relative bandwidth reaches 13%, and therefore the Antenna Design for the WCDMA portable terminal requires to have big bandwidth, small size, and on whole aximuthpiston, provide even covering, (Liu advances for Zhu Xiaowei, He Xiaoxiao more than 0dBi in gain, the planar inverted-F antenna [J] that is used for the 3g system and mobile terminal, mobile communication, 2002,12 (5): 66-68).
Commercial at present mobile phone terminal antenna mainly adopts whip antenna, and its shortcoming is that size is difficult for dwindling, and the existence of human body proximity effect causes the radiation direction covering inhomogeneous.And flat helical antenna is exactly this typical antenna that hangs down section, slab construction that grows up with the requirement of modern communications development, it with broadband, in light weight, section is low, can be conformal, distinct advantages such as low cost of manufacture, radiation efficiency height, obtained extensive studies and development.Therefore, research influence the use of flat helical antenna and the bandwidth of its broadening antenna, for the scope of application of expansion flat helical antenna, make flat helical antenna be applied even more extensively industrial, civilian and national defence significant.
Photon band gap (PBG, Photonic Band-Gap) structure can realize the periodic structure of photon band gap.Utilize its band resistance characteristic, can realize wideband filtered, improve efficiency of amplitude, improve the directional diagram of antenna.
Data shows, not seeing has the people that flat helical antenna is applied in the frequency range of 1920～2170MHz 3-G (Generation Three mobile communication system) terminal, mainly is that flat helical antenna is applied in more than the high band 8GHz both at home and abroad.
Summary of the invention
The object of the present invention is to provide a kind of antenna performance good, antenna size is little, and bandwidth reaches more than the 250MHz, can cover the plane helical microstrip antenna that is used for the 3G system and mobile terminal of whole transmitting-receiving frequency range.
The technical scheme that the present invention has adopted flat helical antenna to combine with the PBG technology.
The present invention is provided with the double side dielectric substrate, one side is the helix medium substrate, and another side is the photon band gap medium substrate, and medium substrate adopts glass fabric of epoxy resin (FR4) medium substrate, medium substrate is of a size of (4.9～5.1) cm * (4.9～5.1) cm, is preferably 5cm * 5cm.On the helix medium substrate, be provided with 2 arms, 2 edges of every one arm are made of the equiangular helical spiral that 2 initial angles differ pi/2, article two, the gap of helix starting point is 0.2～0.4cm, be preferably 0.3cm, the helix starting point to the distance between the helix terminal point (claim helix maximum outside diameter) R be 1.2～1.4cm, be preferably 1.3cm.On the photon band gap medium substrate, be provided with 2 row, 3 row totally 6 rectangular openings, the 1st row the 1st hole is of a size of (2.1～2.3) cm * (0.8～1.0) cm, be preferably 2.2cm * 0.9cm, the 1st row the 2nd hole is of a size of (2.1～2.3) cm * (1.3～1.5) cm, be preferably 2.2cm * 1.4cm, the 1st row the 3rd hole is of a size of (2.1～2.3) cm * (1.4～1.6) cm, is preferably 2.2cm * 1.5cm; The 2nd row the 1st hole is of a size of (1.5～1.7) cm * (0.8～1.0) cm, be preferably 1.6cm * 0.9cm, the 2nd row the 2nd hole is of a size of (1.5～1.7) cm * (1.3～1.5) cm, be preferably 1.6cm * 1.4cm, the 2nd row the 3rd hole is of a size of (1.5～1.7) cm * (1.4～1.6) cm, is preferably 1.6cm * 1.5cm.
Compare with existing flat helical antenna, because photon band gap (PBG, the Photonic Band-Gap) structure that the present invention adopts can realize the periodic structure of photon band gap, utilize its band resistance characteristic, can realize wideband filtered, improve efficiency of amplitude, improve the directional diagram of antenna.In microstrip antenna, realize pbg structure, can erode into the aperture (the maintenance dielectric substrate is constant) of periodic arrangement in ground plane upper edge microstrip line direction.Pbg structure is applied on the flat helical antenna, can reduces the size of antenna and the generation of surface wave, improve the efficient of antenna, improve the performance of antenna, the utilized bandwidth of extended antenna etc.The working frequency range that research can be used for WCDMA system radio frequency simultaneously can spread bandwidth PBG have great significance for the application of flat helical antenna engineering.
Description of drawings
Fig. 1 is the structure perspective diagram of the embodiment of the invention.
Fig. 2 is the helix medium substrate structural representation of the embodiment of the invention.
Fig. 3 is the flat helical antenna structural representation of the embodiment of the invention.
Fig. 4 is the photon band gap medium substrate structural representation of the embodiment of the invention.
Fig. 5 is the photonic band gap structure schematic diagram of the embodiment of the invention.
Fig. 6 is an actual match circuit diagram of the present invention.
Fig. 7 is a 2GHzH face actual measurement directional diagram of the present invention.
Fig. 8 is a 2GHzE face actual measurement directional diagram of the present invention.
Embodiment
Following examples will be described further technical scheme of the present invention and outstanding effect thereof in conjunction with the accompanying drawings.
Referring to Fig. 1-5, the present invention is provided with the double side dielectric substrate, simultaneously (front) is helix medium substrate 1, another side (back side) is a photon band gap medium substrate 2, medium substrate adopts glass fabric of epoxy resin (FR4) medium substrate, its dielectric constant is 4.4, the length and the width of medium substrate are 5cm, thickness is 0.8mm, on helix medium substrate 1, be provided with 2 arms, 2 edges of every one arm are made of the equiangular helical spiral that 2 initial angles differ pi/2, and the gap of two helix starting points is 0.3cm, the helix starting point to the distance between the helix terminal point (claim helix maximum outside diameter) R be 1.3cm.Be provided with 2 row, 3 row totally 6 rectangular openings on photon band gap medium substrate 2, the long L1 of 3 rectangular openings of the 1st row is 2.2cm, and the long L2 of 3 rectangular openings of the 2nd row is 1.6cm.1st, the wide W1 of 2,3 row rectangular openings, W2, W3 are respectively 0.9cm, 1.4cm, 1.5cm.
The match circuit figure of antenna Antenna as shown in Figure 6, L=10nH wherein, C1=3pF, C2=1pF.The tie point of L and C1 meets vector network analyzer Y.
Fig. 7 and 8 has provided the 2GHz H face and the E face directional diagram of embodiment of the invention actual measurement, and the amplitude of signal source is-15dBm.
Wherein, Fig. 7 is the H face directional diagram of the 2GHz of embodiment of the invention actual measurement, and two H face diagram shape are roughly the same as can be known by contrast, and antenna has two lobes, one between 180 °～270 °, another is at 0 °～120 ° and 320 °～360.Between.Two lobes cover most of angle basically, and radiation has omni-directional.Fig. 8 is the E face directional diagram of the 2GHz of embodiment of the invention actual measurement, and as can be seen, the first half shape basically identical, main lobe have been compared some little difference with analogous diagram between 30 °～150 ° from Fig. 7 and 8, and the effect of emulation does not have the main lobe angle of actual measurement big.And, from measured drawing as can be seen, radiation leakage is arranged between 270 °～320 ° for the latter half, and this mainly is because the back side of antenna has pbg structure, has corroded square hole, electromagnetic wave has leakage from square hole.This is the negative interaction that pbg structure brings.
From the reflection coefficient S11 figure of the flat helical antenna of actual measurement as can be seen, the working band of antenna has been in 1.4～2.4GHz, the return loss in the band all-below the 10dB, the minimum echo loss is-21dB.Antenna S11 performance meets the demands in whole passband, and bandwidth reaches 1GHz, has improved the performance of flat helical antenna.
The flat helical antenna that adds match circuit is carried out the measurement of reflection coefficient, and from data as can be seen, respective frequencies is that the S11 of 1835MHz is-9.86dB, and respective frequencies is that the S11 of 2226MHz is-10.04dB.S11 is 391MHz less than the frequency range of-10dB, and (1920～2170MHz) have covered fully the transmitting-receiving frequency range of WCDMA.The pairing frequency of the minimum value of antenna reflection coefficient is 2109MHz, and S11 is-23.59dB.In fact antenna has reached designing requirement, and matching effect is also fine.After 2560MHz, the S11 value just is in-10dB always, from the wide band effect of flat helical antenna as can be seen just here.
In sum, the technology that the present invention adopts flat helical antenna to combine with photonic band gap structure, be the structure and the photonic band gap structure of flat helical antenna, scheme as can be seen from the S11 of emulation and actual test, antenna has covered this frequency band of 1920～2170MHz, has reached the requirement of 3G to the WCDMA standard.
Claims (2)
1. the plane helical microstrip antenna that is used for the 3G system and mobile terminal, it is characterized in that being provided with medium substrate, medium substrate is the double-sided copper-clad substrate, and it is zigzag shape that medium substrate simultaneously covers the copper etching, it is photonic band gap structure that another side covers the copper etching, and medium substrate is of a size of 5.0cm * 5.0cm; Be provided with 2 arms on the helix medium substrate, 2 edges of every one arm are made of the equiangular helical spiral that 2 initial angles differ pi/2, and the gap of two helix starting points is 0.3cm, and helix starting point to the distance (R) between the helix terminal point is 1.3cm; Be etched into 2 row, 3 row totally 6 rectangular openings on the copper covering of photon band gap place medium substrate surface coverage, the 1st row the 1st hole is of a size of 2.2cm * 0.9cm, and the 1st row the 2nd hole is of a size of 2.2cm * 1.4cm, and the 1st row the 3rd hole is of a size of 2.2cm * 1.5cm; The 2nd row the 1st hole is of a size of 1.6cm * 0.9cm, and the 2nd row the 2nd hole is of a size of 1.6cm * 1.4cm, and the 2nd row the 3rd hole is of a size of 1.6cm * 1.5cm.
2. the plane helical microstrip antenna that is used for the 3G system and mobile terminal as claimed in claim 1 is characterized in that described medium substrate is the glass fabric of epoxy resin medium substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100713714A CN100463289C (en) | 2006-03-24 | 2006-03-24 | Plane helical microstrip antenna for 3G system mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100713714A CN100463289C (en) | 2006-03-24 | 2006-03-24 | Plane helical microstrip antenna for 3G system mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1838481A CN1838481A (en) | 2006-09-27 |
| CN100463289C true CN100463289C (en) | 2009-02-18 |
Family
ID=37015777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100713714A Expired - Fee Related CN100463289C (en) | 2006-03-24 | 2006-03-24 | Plane helical microstrip antenna for 3G system mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100463289C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271998B (en) * | 2008-04-25 | 2012-04-25 | 厦门大学 | Miniature folded dipole antenna with mirror-image structure for radio frequency recognition system |
| CN101304116B (en) * | 2008-06-27 | 2012-01-04 | 厦门大学 | Rectangle array photon band-gap ceramic plane helical dual-frequency-band antenna of radio frequency recognition system |
| CN101304117B (en) * | 2008-06-27 | 2012-02-01 | 厦门大学 | Fractal dual-frequency-band ceramic antenna for radio frequency recognition system |
| CN101304115B (en) * | 2008-06-27 | 2012-01-04 | 厦门大学 | Photon band-gap double-folding dipole dual frequency band antenna |
| CN101304114B (en) * | 2008-06-27 | 2012-02-15 | 厦门大学 | Fractal photon band-gap folding line microstrip antenna for ultra-broadband system |
| CN101383446B (en) * | 2008-10-21 | 2012-07-04 | 厦门大学 | Archimedes spiral antenna of graded dielectric constant with three frequency light quantum band-gap |
| CN102456947A (en) * | 2010-10-22 | 2012-05-16 | 北京协和航电科技有限公司 | Single-layer circularly symmetric GPS-BD (Global Position System-Big Dipper) dual-frequency microstrip antenna |
| CN104319461B (en) * | 2014-10-01 | 2017-12-22 | 广东工业大学 | Broadband multi-mode antenna for satellite navigation based on artificial electromagnetic medium |
| CN105161847B (en) * | 2015-08-19 | 2018-08-10 | 桂林电子科技大学 | Wide band high-gain circular polarized antenna |
| CN110544821A (en) * | 2018-05-28 | 2019-12-06 | 云南电网有限责任公司保山供电局 | Transmission line corona discharge detecting system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316796A (en) * | 2001-03-19 | 2001-10-10 | 东南大学 | Broad-band circularly polarized antenna integrated on plane |
| US20010033251A1 (en) * | 1999-02-17 | 2001-10-25 | Rudish Ronald M. | High efficiency broadband antenna |
| JP2003304113A (en) * | 2002-04-09 | 2003-10-24 | Denso Corp | Ground board and antenna device |
| CN1703805A (en) * | 2002-10-11 | 2005-11-30 | 汤姆森许可贸易公司 | Slot-type antennas adopting a photonic bandgap structure |
| CN1710747A (en) * | 2004-06-17 | 2005-12-21 | 上海无线电设备研究所 | Archimedian spiral antenna using photon band-gap as reflection chamber |
-
2006
- 2006-03-24 CN CNB2006100713714A patent/CN100463289C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010033251A1 (en) * | 1999-02-17 | 2001-10-25 | Rudish Ronald M. | High efficiency broadband antenna |
| CN1316796A (en) * | 2001-03-19 | 2001-10-10 | 东南大学 | Broad-band circularly polarized antenna integrated on plane |
| JP2003304113A (en) * | 2002-04-09 | 2003-10-24 | Denso Corp | Ground board and antenna device |
| CN1703805A (en) * | 2002-10-11 | 2005-11-30 | 汤姆森许可贸易公司 | Slot-type antennas adopting a photonic bandgap structure |
| CN1710747A (en) * | 2004-06-17 | 2005-12-21 | 上海无线电设备研究所 | Archimedian spiral antenna using photon band-gap as reflection chamber |
Non-Patent Citations (2)
| Title |
|---|
| 一种新颖的光子带隙平面螺旋天线. 徐琰，张谟杰.电波科学学报，第20卷第6期. 2005 |
| 一种新颖的光子带隙平面螺旋天线. 徐琰，张谟杰.电波科学学报，第20卷第6期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1838481A (en) | 2006-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100463289C (en) | Plane helical microstrip antenna for 3G system mobile terminal | |
| CN101752675B (en) | Double-frequency antenna and wireless communication device applying same | |
| CN100369323C (en) | Super broad band ladder-shape floor printing single pole antenna | |
| CN102064384A (en) | Ultra-wideband antenna | |
| CN101719593B (en) | Broadband multi-frequency omni-directional array antenna | |
| CN101752665A (en) | UWB (ultra wide band) antenna with band-stop characteristic | |
| CN103474762B (en) | Based on the broadband multiband printed antenna of two-sided parallel lines feed structure | |
| CN101394024B (en) | Ultra-wideband elliptical slot antenna having back chamber | |
| CN202121062U (en) | Compact single pole ultra-wideband antenna base on radiation paster | |
| CN1996662B (en) | Ultra-wide antenna with the base-integrated wave guide feedback structure | |
| CN108493588B (en) | Indoor base station and PIFA antenna thereof | |
| CN101777691B (en) | Slot printing monopole ultra-wideband antenna | |
| CN105161837A (en) | Small coplanar waveguide-fed broadband printed antenna | |
| CN202121063U (en) | Ultra wide band microstrip antenna based on complementary split ring resonator for realizing suppressing harmonic wave | |
| Malaisamy et al. | Design and analysis of 4× 4 MIMO antenna with DGS for WLAN applications | |
| CN101227028B (en) | Double frequency slit antenna of substrate integrated waveguide | |
| CN106532270B (en) | Resistance loaded miniaturized Vivaldi antenna for electromagnetic radiation measurement system | |
| CN101242028B (en) | Dual resistance belt ultra-broadband antenna based on non-symmetric stick line | |
| CN202142638U (en) | Ultra wide band band-rejection antenna based on complementary diffractive-ring resonator | |
| CN201178135Y (en) | Bi-frequency slit antenna of substrate integrated waveguide | |
| CN113178688B (en) | Hollow hexagram ultra-wideband antenna | |
| CN101494314B (en) | Antenna structure | |
| CN201167134Y (en) | Ultra-wideband printed antennae with double-stopband function | |
| CN204289699U (en) | A kind of wide-band slot antenna | |
| CN109638440B (en) | Metamaterial-based 5G communication miniaturized broadband MIMO antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 Termination date: 20130324 |