CN102938501A - Broadband bidirectional microstrip antenna - Google Patents
Broadband bidirectional microstrip antenna Download PDFInfo
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- CN102938501A CN102938501A CN2012105287884A CN201210528788A CN102938501A CN 102938501 A CN102938501 A CN 102938501A CN 2012105287884 A CN2012105287884 A CN 2012105287884A CN 201210528788 A CN201210528788 A CN 201210528788A CN 102938501 A CN102938501 A CN 102938501A
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- parallelogram
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Abstract
The invention discloses a broadband bidirectional microstrip antenna, and relates to a microstrip antenna. The broadband bidirectional microstrip antenna is provided with a dielectric substrate, wherein two faces of the dielectric substrate are coated with copper, and a parallelogram-shaped oscillator with two L-shaped grooves are printed on the front side of the substrate, wherein the L-shaped grooves are in inverse symmetry relative to the central position; and the back side of the substrate is fully coated with copper. On the front side, the upper and lower sides of the parallelogram are respectively parallel to the upper and lower sides of the substrate, and the parallelogram is centrally placed on the substrate. The two L-shaped grooves are oppositely placed in inverse symmetry relative to the central point and respectively etched to the upper and lower sides of the parallelogram, one arm of each L-shaped groove is vertical to the upper and lower sides of the parallelogram while the other arm is parallel to the upper and lower sides of the parallelogram. The back side of the substrate is completely coated with copper so as to be used as a ground plane. A through hole is drilled from the central position of the front side parallelogram to the back side, and a 50ohm coaxial line connector is used for feeding the parallelogram-shaped oscillator from the back side via the through hole. The broadband bidirectional microstrip antenna is bidirectional, wide in frequency band, low in profile, high in gain, high in radiation efficiency and simple in structure.
Description
Technical field
The present invention relates to a kind of microstrip antenna, especially relate to a kind of DCS1800 communication protocol that can be used for Mobile communication direct base station, at the wide-band bidirectional microstrip antenna of parallelogram oscillator body fluting.
Background technology
The repeater is usually to adopt in the present mobile communication system, is used for improving the equipment that mobile communication covers range and message capacity.The repeater is applied in some special applications scenes usually, as stops up inside corridor, narrow street, tunnel, highway, and in these occasions, the General Requirements discharging-directly station antenna should have: bidirectional radiation, broadband, high gain characteristics.Simultaneously, in order further to reduce the volume of antenna equipment, require antenna will have low section characteristic.
At present, there has been the researcher of part to do research about the antenna with bidirectional radiation characteristic, proposed the antenna structure of multiple realization bidirectional characteristic.Common structure has: planar array antenna and two are directional antenna back-to-back
[1 ~ 3]The people such as LongshengLiu adopt six folded dipole collinear set battle arrays, have realized approximately 9.05dBi gain at two end-on directions.But the array antenna feed structure is complicated, and antenna area is larger
[1]X.Li, L.Yang, the people such as S.-X.Gong utilize dipole antenna to form the double frequency bilateral antenna that array has realized being operated in 2.4/5.8GHz, and on 2.4GHz and 5.8GHz frequency range, the direction coefficient of antenna on two end-fire directions reaches respectively 4.5～5.9dB and 6.1～8.9dB
[2]Also there is relevant document to propose to utilize individual antenna unit to realize the bidirectional radiation characteristic.The antenna structure of realizing the bidirectional radiation characteristic has: loop aerial, be nested in list (two) utmost point antenna of ground loop
[4 ~ 6]Liu Cong, the people such as Xue Fengzhang are nested in a monopole antenna on the ground plane of a U-shaped, have realized the bidirectional characteristic of antenna, in the gain of antenna on all working frequency points on two end-on directions all more than 4.8dBi.But these utilize individual antenna unit to realize that the antenna of bidirectional characteristic all is to adopt stereochemical structure, can't realize low section.The people such as H.Arai have really realized bidirectional radiation low profile antenna structure by the microstrip antenna of H shape ground plane and crank shape feed structure
[7]As add the passive paster of guiding in both sides, its end-fire gain can reach 5.71dBi
[8]But this grounding structure face needs H shape opening, and requiring during application has certain altitude from physics ground.
List of references:
[1]Longsheng?Liu,Zhijun?Zhang,Zijian?Tian,et?al.A?bidirectional?endfire?array?with?compactantenna?elements?for?coal/mine?tunnel?communication[J].IEEE?Antennas?and?WirelessPropagation?Letters,2012,11:342-345。
[2]X.Li,L.Yang,S.-X.Gong,et?al.Bidirectional?high?gain?antenna?for?WLAN?applications[J].Progress?in?Electromagnetics?Research?Letters,2009,6:99-106。
[3]J.Zhang,X.-M.Zhang,J.-S.Liu,et?al.Dual-band?bidirectional?high?gain?antenna?for?WLAN2.4/5.8GHz?applications[J].Electronics?Letters,2009,45(1):6-7。
[4] Liu Cong, Xue Fengzhang. a kind of broadband monopole antenna [J] for tunnel coverage. microwave journal, 2010,26 (6): 50-53.
[5]Jordi?Soler,Carles?Puente,Alberto?Puerto.A?dual-band?bidirectional?multilevel?monopoleantenna[J].Microwave?and?Optical?Technology?Letters,2002,34(6):445-448。
[6]K.Chawanonphithak,C.Phongcharoenpanich,S.Kosulvit,et?al.Characteristics?of?an?ellipticalring?antenna?excited?by?a?linear?electric?probe[J].International?Journal?of?Electronics,2007,94(10):973-984。
[7]T.Mukaiyama,H.Arai,Y.Ebine.Bi-directional?notch?and?crank-shaped?antenna[A].AsiaPacific?Microwave?Conference[C].1997.1:417-420。
[8]H.Arai,K.Kohzu,T.Mukaiyama.Bi-directional?notch?antenna?with?parasitic?elements?fortunnel?booster?system[A].Antennas?and?Propagation?Society?International?Symposium[C].1997.4:2218-2221。
Summary of the invention
The object of the present invention is to provide a kind of have bidirectional characteristic, broadband, low section, gain is high, radiation efficiency is high, simple in structure wide-band bidirectional microstrip antenna.
The present invention is provided with the double-side copper-applying medium substrate, is printed with parallelogram sturcutre oscillator with two L shaped grooves of relative center antisymmetry in substrate front side; All apply copper on the substrate reverse side.On the front, the upper bottom of parallelogram is parallel with the upper bottom of substrate respectively, and parallelogram is placed on the substrate between two parties.Two L shaped grooves are with respect to central point symmetrical placement in the other direction, two L shaped grooves are etched to respectively the up and down both sides of parallelogram, and a wherein arm of L shaped groove is vertical with the upper bottom of parallelogram, is vertical arm, the another one arm is parallel with the upper bottom of parallelogram, is transverse arm.Reverse side all applies copper as ground plane.Bore a through hole to reverse side from the center of front parallelogram, from the negative the parallelogram oscillator is carried out feed with the coaxial line joint of 50 Ω by through hole.
Described substrate is F4BK-2 double-side copper-applying medium substrate, and the length of substrate can be 110 ± 0.1mm, and width can be 70 ± 0.1mm, and thickness can be 3mm; Apply the relative dielectric constant ε of copper medium substrate
rCan be 4.3.
The length of side of described parallelogram sturcutre oscillator can be 87.9 ± 0.1mm, the wide 41.8 ± 0.1mm that can be, and upper bottom staggers apart from can be 7.7 ± 0.1mm.Two identical L shaped groove antisymmetry of shape size are placed.Vertical arm lengths of L shaped groove can be 34.5 ± 0.1mm, and vertically the arm width can be 2.7 ± 0.1mm, and transverse arm length can be 4.8 ± 0.1mm, and the transverse arm width can be 4.1 ± 0.1mm.
Compare with existing printing discharging-directly station antenna, the present invention has following outstanding advantage and significant effect:
Have bidirectional radiation characteristic, broadband, low section, gain is high, simple in structure, production cost is low.Its relative bandwidth is that 5.8% liang of end-fire directive gain is about 4.3dBi, and in the working band of antenna, radiation field of aerial is the linear polarization with certain inclination angle.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the return loss performance figure of the embodiment of the invention.In Fig. 2, abscissa represents frequency Frequency (GHz), and ordinate represents feed port reflection coefficient S
11(dB), curve a represents simulation result simulation; Curve b represents measured result measure.
Fig. 3 is the yoz face directional diagram when frequency is 1.79GHz of the embodiment of the invention.
Fig. 4 is the yoz face directional diagram when frequency is 1.85GHz of the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Referring to Fig. 1, the present invention is provided with double-side copper-applying medium substrate 1, and the front of medium substrate is parallelogram oscillator body 2, L shaped groove 3.
Referring to Fig. 2, Fig. 2 has provided port reflection coefficient (dB) performance map of the embodiment of the invention.As can be seen from Figure 2, bandwidth of operation scope 1.776 ~ 1.865GHz of antenna-10dB, absolute bandwidth is 105MHz, relative bandwidth is about 5.8%.
Referring to Fig. 3 and 4, by Fig. 3 and 4 as seen, operating frequency be 1.79GHz and the time on the yoz plane, i.e. directional diagram on the E face has a bidirectional radiation characteristic the working band internal antenna is approximate, the greatest irradiation direction to+the z axle is the skew of radiation element normal direction.At 1.79GHz resonance frequency, the greatest irradiation direction be with radiation element to the direction that becomes 50 ° of angles, its gain is about 4.3dBi; At 1.85GHz resonance frequency, the greatest irradiation direction with+z axle clamp angle is 54 °, its gain is about 4.3dBi.
Claims (7)
1. the wide-band bidirectional microstrip antenna is characterized in that being provided with the double-side copper-applying medium substrate, is printed with parallelogram sturcutre oscillator with two L shaped grooves of relative center antisymmetry in substrate front side; All apply copper on the substrate reverse side; On the front, the upper bottom of parallelogram is parallel with the upper bottom of substrate respectively, and parallelogram is placed on the substrate between two parties; Two L shaped grooves are with respect to central point symmetrical placement in the other direction, two L shaped grooves are etched to respectively the up and down both sides of parallelogram, and a wherein arm of L shaped groove is vertical with the upper bottom of parallelogram, is vertical arm, another arm is parallel with the upper bottom of parallelogram, is transverse arm; Reverse side all applies copper as ground plane; Bore a through hole to reverse side from the center of front parallelogram, from the negative the parallelogram oscillator is carried out feed with the coaxial line joint of 50 Ω by through hole.
2. wide-band bidirectional microstrip antenna as claimed in claim 1 is characterized in that described substrate is F4BK-2 double-side copper-applying medium substrate.
3. wide-band bidirectional microstrip antenna as claimed in claim 2, the length that it is characterized in that described substrate is 110 ± 0.1mm, and width is 70 ± 0.1mm, and thickness is 3mm.
4. wide-band bidirectional microstrip antenna as claimed in claim 1 is characterized in that the relative dielectric constant ε of described deposited copper medium substrate
rBe 4.3.
5. wide-band bidirectional microstrip antenna as claimed in claim 1, the length of side that it is characterized in that described parallelogram sturcutre oscillator is 87.9 ± 0.1mm, and wide is 41.8 ± 0.1mm, and the upper bottom distance that staggers is 7.7 ± 0.1mm.
6. wide-band bidirectional microstrip antenna as claimed in claim 1 is characterized in that the L shaped groove antisymmetry placement that described two shape sizes are identical.
7. wide-band bidirectional microstrip antenna as claimed in claim 1, the vertical arm lengths that it is characterized in that described L shaped groove is 34.5 ± 0.1mm, and vertically the arm width is 2.7 ± 0.1mm, and transverse arm length is 4.8 ± 0.1mm, and the transverse arm width is 4.1 ± 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528788.4A CN102938501B (en) | 2012-12-10 | 2012-12-10 | Broadband bidirectional microstrip antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528788.4A CN102938501B (en) | 2012-12-10 | 2012-12-10 | Broadband bidirectional microstrip antenna |
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| Publication Number | Publication Date |
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| CN102938501A true CN102938501A (en) | 2013-02-20 |
| CN102938501B CN102938501B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210528788.4A Expired - Fee Related CN102938501B (en) | 2012-12-10 | 2012-12-10 | Broadband bidirectional microstrip antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701600A (en) * | 2013-12-06 | 2015-06-10 | 智易科技股份有限公司 | Antenna structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08204433A (en) * | 1995-01-25 | 1996-08-09 | Nippon Telegr & Teleph Corp <Ntt> | Bidirectional directivity printed board antenna |
| US5594455A (en) * | 1994-06-13 | 1997-01-14 | Nippon Telegraph & Telephone Corporation | Bidirectional printed antenna |
| US6469674B1 (en) * | 2001-05-17 | 2002-10-22 | James Stanley Podger | Double-lemniscate antenna element |
| CN2533634Y (en) * | 2001-09-05 | 2003-01-29 | 西安海天天线科技股份有限公司 | Broadband microstrip patch antenna |
| CN1705164A (en) * | 2004-06-01 | 2005-12-07 | 香港城市大学 | Broad band paster antenna with double L shaped probes |
| CN101710652A (en) * | 2008-11-05 | 2010-05-19 | 广东通宇通讯设备有限公司 | Integrated wide-band bilateral radiating antenna |
| CN102522628A (en) * | 2011-12-09 | 2012-06-27 | 清华大学 | High gain bidirectional end-fire antenna array applied to mine and tunnel |
| CN102683827A (en) * | 2012-06-07 | 2012-09-19 | 清华大学 | Bidirectional radiating antenna used in mine shafts and tunnels |
-
2012
- 2012-12-10 CN CN201210528788.4A patent/CN102938501B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5594455A (en) * | 1994-06-13 | 1997-01-14 | Nippon Telegraph & Telephone Corporation | Bidirectional printed antenna |
| JPH08204433A (en) * | 1995-01-25 | 1996-08-09 | Nippon Telegr & Teleph Corp <Ntt> | Bidirectional directivity printed board antenna |
| US6469674B1 (en) * | 2001-05-17 | 2002-10-22 | James Stanley Podger | Double-lemniscate antenna element |
| CN2533634Y (en) * | 2001-09-05 | 2003-01-29 | 西安海天天线科技股份有限公司 | Broadband microstrip patch antenna |
| CN1705164A (en) * | 2004-06-01 | 2005-12-07 | 香港城市大学 | Broad band paster antenna with double L shaped probes |
| CN101710652A (en) * | 2008-11-05 | 2010-05-19 | 广东通宇通讯设备有限公司 | Integrated wide-band bilateral radiating antenna |
| CN102522628A (en) * | 2011-12-09 | 2012-06-27 | 清华大学 | High gain bidirectional end-fire antenna array applied to mine and tunnel |
| CN102683827A (en) * | 2012-06-07 | 2012-09-19 | 清华大学 | Bidirectional radiating antenna used in mine shafts and tunnels |
Non-Patent Citations (1)
| Title |
|---|
| TOHRU MUKAIYAMA ET AL.: "Bi-directional Notch and Crank-shaped Antenna", 《ASIA PACIFIC MICROWAVE CONFERENCE》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701600A (en) * | 2013-12-06 | 2015-06-10 | 智易科技股份有限公司 | Antenna structure |
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| Publication number | Publication date |
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| CN102938501B (en) | 2014-09-03 |
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