CN102013571A - Double-sided elliptic gap paster dipole antenna used for vehicle-mounted digital television - Google Patents
Double-sided elliptic gap paster dipole antenna used for vehicle-mounted digital television Download PDFInfo
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- CN102013571A CN102013571A CN2010105054067A CN201010505406A CN102013571A CN 102013571 A CN102013571 A CN 102013571A CN 2010105054067 A CN2010105054067 A CN 2010105054067A CN 201010505406 A CN201010505406 A CN 201010505406A CN 102013571 A CN102013571 A CN 102013571A
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Abstract
The invention relates to a dipole antenna, in particular a double-sided elliptic gap paster dipole antenna used for a vehicle-mounted digital television. The double-sided elliptic gap paster dipole antenna used for the vehicle-mounted digital television has the advantages of large bandwidth, low return loss, good gain performance, omnidirectional radiation property and more received signal channels. The double-sided elliptic gap paster dipole antenna used for the vehicle-mounted digital television is provided with a medium substrate, two pairs of elliptic dipole pasters and a micro-strip feeder line, wherein the two pairs of dipole pasters are respectively located on two sides of the medium substrate and are coincident in position; a dipole arm is provided with a gap with a varying width; the gap is arranged symmetrically relative to an elliptic spindle; the gap becomes wider and wider from a feed end of an antenna signal to the tail end of the antenna; and the feeding is realized by using a micro-strip feeder line educed from the dipole paster.
Description
Technical field
The present invention relates to a kind of dipole antenna, especially relate to a kind of two-sided oval slot patch dipole antenna that is used for vehicle-mounted digital television.
Background technology
At present, along with developing rapidly of wireless mobile telecommunication technology, the vehicle-mounted digital television technology is progressively set up and is developed, and be subjected to the extensive concern of domestic and international industry gradually, as a kind of brand-new mass media, mainly by wireless transmission, it can be widely used in all kinds of public places such as bus, taxi, subway station, train and airport to the vehicle-mounted digital television technology.DVB tissue (digital video broadcasting industry organization) has been announced the DVB-H standard at the transmission system of receiving digital television in moving specially, this standard has not only overcome shortcomings such as the limitation that in the past adopts DVB-T standard reception terrestrial DTV in moving and power consumption are big, and become and be used in mobile device transmission specially and look audio frequency, the broadcast system of " point-to-multipoint " of content of multimedia, for receiving digital television in moving has been opened up a wide main road, Digital Television has fundamentally changed the traditional concept of simulated television like this, personal computer, communication tool (being 3C) merges ([13] C.M.Su veritably, L.C.Chou, C.I.Lin, and K.L.Wong, " Internal DTV receiving antenna for laptop application; " Microw.Opt.Technol.Lett., vol.44, pp.4-6, Jan.5,2005).The 32FW high definition television display of domestic group of Skyworth development is the strictness check by government broadcasting tv product quality supervision and test center on March 6th, 2004, becoming at present unique national authority department that passes through detects, the parameters performance index meet the relevant Digital Television of country fully and receive the digital TV in high resolution receiver of regulation, thereby have been born domestic first Digital Television.Therefore digital TV antenna will have very big development in from now on several years.
Antenna Design and manufacturing technology are one of core key technologies of vehicle-mounted digital television, every characteristic of antenna and form size, the service behaviour and the application of vehicle-mounted digital television system have been influenced dramatically, along with the develop rapidly of in-car TV technology, people have higher requirement at aspects such as broadband, miniaturization, anti-destructive, compatible with multiple networks to its antenna.Antenna has critical role in the vehicle-mounted digital television system, it is carried out deep research have important value and Practical significance.
The frequency range of the working frequency range commonly used of vehicle-mounted digital television system is 470～860MHz, one is very narrow for its bandwidth requirement, substantially belong to frequency work ([25] Yun-Wen Chi, Kin-Lu Wong, and Saou-Wen Su, " Broadband PrintedDipole Antenna With a Step-Shaped Feed Gap for DTV Signal Reception ", IEEETRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL.55, NO.11, pp.3354-3356, Nov, 2007).Antenna Design for the vehicle-mounted digital television system, receiving digital television in moving, because signal is to change with diverse geographic location, and the characteristic of channel is to do dynamically to change, this just requires antenna that the reliability of the dynamic characteristic variation of different channels is made real-time reflection, and antenna must guarantee certain bandwidth and gain in comprehensive scope in moving.For this meeting flat ([24] Zhao Huiping. a kind ofly be used for moving the Antenna Design that receives terrestrial DTV, western radio and television, Vol.5, Sup, 2004) design a kind of comprehensive cylinder helix microstrip antenna, it quarter-wave micro-strip resonantor in the shape of a spiral shape ground around having on the certain thickness hollow cylinder, its microband paste and floor constitute coaxial clyinder, volume ratio is shorter and smaller, can be conformal with any carrier (for example automobile), simultaneously can be designed to any specification (as 50 Ω, 75 Ω etc.) connect with coaxial cable, must matching network, and active electronic device can be installed in hollow inside.It is bigger that but this antenna takes up space, and bandwidth is also not ideal.
At present, generally be used for the wire antenna of vehicle-mounted digital television system antenna, its working band is narrow, can realize that the signal channel that receives is few.Along with the development of vehicle-mounted digital television technology, market can be good to signal gain, and the car antenna that bandwidth is big produces big demand.
Summary of the invention
The object of the present invention is to provide that a kind of bandwidth is big, return loss is low, gain performance is good, have the many two-sided oval slot patch dipole antennas that is used for vehicle-mounted digital television of signal channel of omnidirectional radiation characteristic, reception.
The present invention is provided with medium substrate, the 2 pairs of oval dipole pasters, microstrip feed line; The sub-paster of 2 electrode couples lays respectively on 2 faces of medium substrate and the position overlaps, the slit that has width gradual change on the dipole arm, the slit is symmetrical arranged with oval axis, the width in slit is become greatly to the antenna tail end gradually by the aerial signal feed side, and feed adopts by the microstrip feed line of drawing on the dipole paster and realizes.
The size of described medium substrate can be length 230mm, width 45mm, thickness 1.5 ± 0.05mm.
Described microstrip feed line can be and has the microstrip feed line that dipole paster abutting end is drawn, and the characteristic impedance of the microstrip feed line that feed is used can be 50 Ω.
Compare with the conventional wire antenna that is used for the vehicle-mounted digital television system, the present invention has following outstanding advantage and significant effect:
1) bandwidth is big, and working band is 504.5～618.1MHz, and its absolute bandwidth is 113.6MHz, and its relative bandwidth is 20.2%;
2) antenna return loss is little, radiance good, its return loss at center frequency point 552.6MHz place is-34.65dB, satisfy the technical standard requirement of vehicle-mounted digital television fully, can be implemented in and obtain multi-channel programme in the vehicle, and image and sound effect are good antenna.
3) have outstanding advantages such as size is little, simple in structure, cost is low, it is integrated to be easy to and can produce in batches.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 is the return loss (S of the embodiment of the invention
11) performance map.In Fig. 3, abscissa is frequency (MHz), and ordinate is return loss intensity (dB).
Fig. 4 is the E face directional diagram of the embodiment of the invention.
Fig. 5 is the H face directional diagram 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 and 2, the present invention is provided with 1,2 pair of medium substrate and covers copper dipole paster 2, the slit 3 on the oval dipole paster, and feed microstrip line 4.The sub-paster of 2 electrode couples lays respectively at the two sides of medium substrate, and the position overlaps.2 pairs of oval-shaped dipole pasters, total length is 226mm, the widest part is 35mm.Dipole single armed length is 111mm.Oval dipole paster has the slit of width gradual change, and the slit is about axial symmetry in the ellipse, and its width becomes big by the aerial signal feed side gradually to the antenna tail end.The distance of slit initiating terminal and aerial signal feed side is 28mm, and the distance of slit clearing end and antenna tail end is 2mm, and slit the widest part width is 4mm.By the microstrip feed line that the dipole antenna abutting end is drawn respectively, width is 4.5mm, and length is 30mm, with oval paster coupling part length be 18mm, extension is 12mm, the feeder line spacing is 4mm.
The scale error of present embodiment to the situation that influences of antenna performance referring to table 1.
Table 1
Annotate: data are existing certain redundant in the table 1, and certain relevance is arranged between each parameter, and what provide is equalization characteristic.
Fig. 3 provides the return loss (S of the embodiment of the invention
11) performance map.Obviously be better than conventional microstrip antenna, satisfy the requirement of Digital Television fully antenna.Can see by Fig. 3, the present embodiment working band is 504.5～618.1MHz, the return loss at its center frequency point 552.6MHz place is-34.65dB, its absolute bandwidth is 113.6MHz, its relative bandwidth is 20.2%, obviously be better than conventional microstrip antenna, satisfy the requirement of Digital Television fully antenna.
From the H face of antenna and E face directional diagram as can be seen, antenna has the omnidirectional radiation characteristic.
Describedly have the dipole paster in slit and the size in slit can be selected according to the actual needs.
Claims (4)
1. the two-sided oval slot patch dipole antenna that is used for vehicle-mounted digital television is characterized in that being provided with medium substrate, the 2 pairs of oval dipole pasters, microstrip feed line; The sub-paster of 2 electrode couples lays respectively on 2 faces of medium substrate and the position overlaps, and has the slit of width gradual change on the dipole arm, and the slit is symmetrical arranged with oval axis, the width in slit by the aerial signal feed side to antenna.
2. the two-sided oval slot patch dipole antenna that is used for vehicle-mounted digital television as claimed in claim 1 is characterized in that described medium substrate is of a size of length 230mm, width 45mm, thickness 1.5 ± 0.05mm.
3. the two-sided oval slot patch dipole antenna that is used for vehicle-mounted digital television as claimed in claim 1 is characterized in that described microstrip feed line, for having the microstrip feed line that dipole paster abutting end is drawn.
4. the two-sided oval slot patch dipole antenna that is used for vehicle-mounted digital television as claimed in claim 1, the characteristic impedance that it is characterized in that the microstrip feed line that feed is used is 50 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105054067A CN102013571A (en) | 2010-10-13 | 2010-10-13 | Double-sided elliptic gap paster dipole antenna used for vehicle-mounted digital television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105054067A CN102013571A (en) | 2010-10-13 | 2010-10-13 | Double-sided elliptic gap paster dipole antenna used for vehicle-mounted digital television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102013571A true CN102013571A (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105054067A Pending CN102013571A (en) | 2010-10-13 | 2010-10-13 | Double-sided elliptic gap paster dipole antenna used for vehicle-mounted digital television |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216901A (en) * | 2017-07-04 | 2019-01-15 | 智易科技股份有限公司 | Dipole antenna |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1639908A (en) * | 2002-07-15 | 2005-07-13 | 弗拉克托斯股份有限公司 | Antenna unit one or more holes |
| US20060119529A1 (en) * | 2004-12-03 | 2006-06-08 | Dragan Krupezevic | Ultra wideband antenna |
-
2010
- 2010-10-13 CN CN2010105054067A patent/CN102013571A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1639908A (en) * | 2002-07-15 | 2005-07-13 | 弗拉克托斯股份有限公司 | Antenna unit one or more holes |
| US20060119529A1 (en) * | 2004-12-03 | 2006-06-08 | Dragan Krupezevic | Ultra wideband antenna |
Non-Patent Citations (2)
| Title |
|---|
| 王发家: "超宽带天线设计与研究", 《中国优秀硕士学位论文全文数据库》, no. 12, 15 December 2008 (2008-12-15) * |
| 蒋芹 等: "一种新型宽带印刷天线", 《微波学报》, vol. 17, no. 3, 30 September 2001 (2001-09-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216901A (en) * | 2017-07-04 | 2019-01-15 | 智易科技股份有限公司 | Dipole antenna |
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Application publication date: 20110413 |