CN204271254U - The accurate Yagi spark gap patch antenna array of L-band - Google Patents
The accurate Yagi spark gap patch antenna array of L-band Download PDFInfo
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- CN204271254U CN204271254U CN201420844355.4U CN201420844355U CN204271254U CN 204271254 U CN204271254 U CN 204271254U CN 201420844355 U CN201420844355 U CN 201420844355U CN 204271254 U CN204271254 U CN 204271254U
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Abstract
The utility model discloses the accurate Yagi spark gap patch antenna array of L-band, comprise the medium substrate of lower surface ground connection, also comprise and be arranged on medium substrate upper surface and about symmetrical between two four antenna elements, the microstrip lines of the barycenter of medium substrate, described antenna element comprises active paster, two reflection pasters, guides paster into; Wherein, microstrip line is connected with active paster respectively, and two reflection pasters are positioned at the same side of active paster, and active paster is at two reflection pasters and guide between paster.The utility model provides one at L-band, and gain is the high-gain aerial of 9.3dB, and this project organization is simple, and be easy to realize, cost is low; Accurate Yagi spark gap patch antenna design scheme is adopted at L-band, the optimal way of associated matrix array antenna, can realize higher than other accurate Yagi spark gap paster antenna gain, the feature more easily regulated, accurate Yagi spark gap patch antenna array uses FR4 sheet material to realize, and has cost low and reduce the features such as area.
Description
Technical field
The utility model relates to field of antenna, particularly the accurate Yagi spark gap patch antenna array of L-band.
Background technology
Antenna is the important component part of meteorological sounding system communication system.The effect of antenna receives electromagnetic wave by electromagnetic radiation to air or from air.So antenna also can be considered the signal coupler in radio-frequency (RF) transmit-receive circuit and air.The quality of antenna directly affects the performance of sonde equipment.The communication environments more complicated of Antenna Operation, more responsive on the impact of the environment such as temperature, landform aspect, can be subject to the various obstructions such as multipath transmisstion, reflection, diffraction when electromagnetic wave is propagated aloft, these have a certain impact all to the received signal.Due to long transmission distance, in receiving system, adopt directed high-gain reception antenna, require that reception antenna main beam aims at transmitting terminal.What meteorological sounding system communication system reception antenna generally adopted is four groups of Yagi spark gap a period of time antenna arrays or ground broad beam parabolic antenna.
Yagi antenna is a kind of typical directional antenna, is widely used in, in communication, radar and other radiotechnics equipment, being usually made up of an active a period of time, a reflector and several directors.The suitable adjustment length in a period of time and the distance between them just can improve frequency response and the radiation characteristic of antenna.But Yagi antenna can only realize end-fire radiation, and cannot installation coplanar with carrier surface, but in the practical application of radio communication, usually require that the main lobe wave beam of antenna is penetrated between direction and end-on direction on limit, i.e. accurate end-on direction, and antenna and the coplanar installation of carrier.The people such as John Huang are little based on microstrip antenna thin profile, volume, be easy to the carrier surface such as guided missile, satellite general character, and can realize the advantage of accurate end-fire, utilize microband paste Yagi antenna to achieve above-mentioned requirement.
1989, John Huang proposes microband paste Yagi antenna, by a reflection paster, an active paster and two guide into paster totally 4 square-shaped metal pasters be printed on one piece of dielectric-slab front, the dielectric-slab back side is metal ground plate, adopt coaxial feeding, antenna operation principle and yagi elements antenna similar, patch size is very close but reduce successively, material object is made through software emulation, test result shows that this antenna ratio of gains conventional microstrip antenna in the scope at 20 ° ~ 60 °, the elevation angle significantly improves, impedance bandwidth is than single card sheet also slightly broadening, there is accurate end-on direction figure.1991,4 microband paste Yagi antennas were organized battle array to improve gain again by John Huang side by side, are applied in the MSAT system of the U.S..2007, Gerald R. DeJean improved the structure that John Huang proposes, and by increasing the number of guiding paster into, adopting feed microstrip line, improve gain and the front to back ratio (F/ B) of antenna, but relative bandwidth being less.
Summary of the invention
Technical problem to be solved in the utility model is the accurate Yagi spark gap patch antenna array overcoming the deficiencies in the prior art and provide L-band, the utility model adopts the mode of array and first time adopts microband paste Yagi antenna as antenna element in L frequency range, and this antenna gain is high, structure simple and cost is low.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
According to the accurate Yagi spark gap patch antenna array of the L-band that the utility model proposes, comprise the medium substrate of lower surface ground connection, also comprise and be arranged on medium substrate upper surface and about symmetrical between two four antenna elements, the microstrip lines of the barycenter of medium substrate, described antenna element comprises active paster, two reflection pasters, guides paster into; Wherein, microstrip line is connected with active paster respectively, and two reflection pasters are positioned at the same side of active paster, and active paster is at two reflection pasters and guide between paster.
As the scheme that the accurate Yagi spark gap patch antenna array of L-band described in the utility model is optimized further, described active paster is square, reflects paster and guide paster into be rectangle.
As the scheme that the accurate Yagi spark gap patch antenna array of L-band described in the utility model is optimized further, the length of described reflection paster is four times of width.
As the scheme that the accurate Yagi spark gap patch antenna array of L-band described in the utility model is optimized further, described in guide between paster and active paster at a distance of 0.04 wavelength.
As the scheme that the accurate Yagi spark gap patch antenna array of L-band described in the utility model is optimized further, at a distance of 0.03 wavelength between described reflection paster and active paster.
As the scheme that the accurate Yagi spark gap patch antenna array of L-band described in the utility model is optimized further, the impedance of described microstrip line is 100 ohm.
As the scheme that the accurate Yagi spark gap patch antenna array of L-band described in the utility model is optimized further, described in guide paster into and be of a size of 0.423 wavelength.
As the scheme that the accurate Yagi spark gap patch antenna array of L-band described in the utility model is optimized further, at a distance of 0.6 wavelength between described antenna element.
As the scheme that the accurate Yagi spark gap patch antenna array of L-band described in the utility model is optimized further, described medium substrate is FR4 dielectric-slab.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
(1) the utility model on the basis of Quasi-Yagi antenna, adopts the mode of array and used the scheme of the power transmission efficiency between antenna array and receiving polarization antenna to obtain best amplitude phase place to increase gain, and first time employing microband paste Yagi antenna designs high-gain aerial as antenna element in L frequency range;
(2) the utility model provides one at L-band, and gain is the high-gain aerial of 9.3dB, and this project organization is simple, and be easy to realize, cost is low;
(3) accurate Yagi spark gap patch antenna design scheme is adopted at L-band, the optimal way of associated matrix array antenna, can realize higher than other accurate Yagi spark gap paster antenna gain, the feature more easily regulated, accurate Yagi spark gap patch antenna array uses FR4 sheet material to realize, and has cost low and reduce the features such as area.
Accompanying drawing explanation
Fig. 1 is the structural representation of accurate Yagi spark gap patch antenna array.
Fig. 2 is accurate Yagi spark gap patch antenna array return loss s11.
Fig. 3 is accurate Yagi spark gap patch antenna array gain diagram.
Reference numeral in figure is interpreted as: 1-medium substrate, the active paster of 2-, and 3-reflects paster, and 4-guides paster into, 5-microstrip line, 6-excitation port.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
The structural representation of accurate Yagi spark gap patch antenna array as shown in Figure 1, the accurate Yagi spark gap patch antenna array of L-band, comprise the medium substrate 1 of lower surface ground connection, also comprise and be arranged on medium substrate 1 upper surface and about symmetrical between two four antenna elements, the microstrip line 5 of the barycenter of medium substrate 1, described antenna element comprises active paster 2, two reflection paster 3, guides paster 4 into; Wherein, microstrip line 5 is connected with active paster 2 respectively, and two reflection pasters 3 are positioned at the same side of active paster 2, and active paster 2 is at two reflection pasters 3 and guide between paster 4.
Described active paster 2 is square, reflect paster 3 and guide paster 4 into and be rectangle, the length of described reflection paster 3 is four times of width, describedly to guide between paster 4 and active paster 2 at a distance of 0.04 wavelength, at a distance of 0.03 wavelength between described reflection paster 3 and active paster 2, the impedance of described microstrip line 5 is 100 ohm, described in guide paster 4 into and be of a size of 0.423 wavelength, at a distance of 0.6 wavelength between described antenna element.Described medium substrate 1 is FR4 dielectric-slab.Plank size is 5mm*164mm*289mm, and medium substrate 1 lower surface is ground plate, upper surface etching metal patch.Active paster 2 by after feed to space radiation electromagnetic wave, make reflection paster 3, guide in paster 4 and produce induced current, also produce radiation.Adopt feed microstrip line mode, the feeding network corresponding according to the Optimum Excitation design obtained, by feeding network and antenna element composition entirety.It is antenna element feed that the excitation port 6 of 50 Ω connects coaxial line.Use the scheme of the power transmission efficiency between antenna array and receiving polarization antenna to obtain best amplitude phase place, designed corresponding feeding network, by feeding network and antenna element composition entirety.Antenna is printed on the FR4 dielectric-slab of 5mm*164mm*289mm, carries out feed by coaxial terminals.If need higher gain, radiating element only need be added again just passable.The length of microstrip line feeder line is regulated to cause the change of amplitude and the phase place inputted to realize accurate end-fire.
In an antenna element: active paster 2 value 0.47 wavelength, the depression of active paster 2 is used to the microstrip line of 100 ohm in succession.Guide paster 4 into and be of a size of 0.423 wavelength, the overall size of two reflection pasters 3 is 1.15 times of active paster 2, the negate of reflection paster 3 width penetrates 1/4 times of the length of paster 3, guide paster 4 into active paster 2 at a distance of 0.04 wavelength, reflection paster 3 is 0.03 wavelength at a distance of active paster 2, two reflection spacings of pasters 3 and active paster 2 cave in measure-alike be all 0.1 wavelength about.At a distance of 0.6 wavelength between antenna element and antenna element.Feeder line designs according to the amplitude phase place of each antenna element input power, the excitation port of 50 ohm out time the microstrip line of two 100 ohm, two microstrip line phase 180 degree.The impedance transformation line that the microstrip line of 100 ohm is further divided into two 100 ohm carries out impedance variation, is connected to the input port of 100 ohm at the microstrip line of connection 70.7 ohm.
Fig. 2 is accurate Yagi spark gap patch antenna array return loss s11.Return loss at centre frequency 1670MHz place is about-31db, shows that this antenna match is good.
Fig. 3 is accurate Yagi spark gap patch antenna array gain diagram, and be as the criterion Yagi spark gap patch antenna array 2D gain diagram, and two line segments are the 2D gain diagram of xoz plane and xoy plane respectively.Simulation result shows that 3 ° of place's gains reach about 9.17 at 1670MHz place.And front and back ratio is about 33, there are good gain and front and back ratio.
In sum, the design of the accurate Yagi spark gap patch antenna array of L-band is verified, uses this scheme to can be generalized in engineer applied and goes.
Above embodiment is only and technological thought of the present utility model is described; protection range of the present utility model can not be limited for this reason; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection range.
Claims (9)
- The accurate Yagi spark gap patch antenna array of 1.L wave band, comprise the medium substrate of lower surface ground connection, it is characterized in that, also comprise and be arranged on medium substrate upper surface and about symmetrical between two four antenna elements, the microstrip lines of the barycenter of medium substrate, described antenna element comprises active paster, two reflection pasters, guides paster into; Wherein, microstrip line is connected with active paster respectively, and two reflection pasters are positioned at the same side of active paster, and active paster is at two reflection pasters and guide between paster.
- 2. the accurate Yagi spark gap patch antenna array of L-band according to claim 1, is characterized in that, described active paster is square, reflects paster and guide paster into be rectangle.
- 3. the accurate Yagi spark gap patch antenna array of L-band according to claim 2, is characterized in that, the length of described reflection paster is four times of width.
- 4. the accurate Yagi spark gap patch antenna array of L-band according to claim 1, is characterized in that, described in guide between paster and active paster at a distance of 0.04 wavelength.
- 5. the accurate Yagi spark gap patch antenna array of L-band according to claim 1, is characterized in that, at a distance of 0.03 wavelength between described reflection paster and active paster.
- 6. the accurate Yagi spark gap patch antenna array of L-band according to claim 1, is characterized in that, the impedance of described microstrip line is 100 ohm.
- 7. the accurate Yagi spark gap patch antenna array of L-band according to claim 1, is characterized in that, described in guide paster into and be of a size of 0.423 wavelength.
- 8. the accurate Yagi spark gap patch antenna array of L-band according to claim 1, is characterized in that, at a distance of 0.6 wavelength between described antenna element.
- 9. the accurate Yagi spark gap patch antenna array of L-band according to claim 1, is characterized in that, described medium substrate is FR4 dielectric-slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420844355.4U CN204271254U (en) | 2014-12-26 | 2014-12-26 | The accurate Yagi spark gap patch antenna array of L-band |
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| CN201420844355.4U CN204271254U (en) | 2014-12-26 | 2014-12-26 | The accurate Yagi spark gap patch antenna array of L-band |
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| CN204271254U true CN204271254U (en) | 2015-04-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252902A (en) * | 2016-09-28 | 2016-12-21 | 广东工业大学 | A kind of Compact type broadband end-fired array array antenna |
| CN107196054A (en) * | 2017-05-22 | 2017-09-22 | 王奕贝 | The Quasi-Yagi antenna of wireless communication system |
| CN107394360A (en) * | 2017-01-23 | 2017-11-24 | 华南理工大学 | A kind of microband paste yagi aerial of collection space ISM energy of electromagnetic fields |
| CN107453039A (en) * | 2017-07-03 | 2017-12-08 | 南京理工大学 | A kind of micro-strip yagi aerial |
| CN107516769A (en) * | 2017-09-28 | 2017-12-26 | 中国联合网络通信集团有限公司 | The antenna of antenna pattern restructural |
-
2014
- 2014-12-26 CN CN201420844355.4U patent/CN204271254U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252902A (en) * | 2016-09-28 | 2016-12-21 | 广东工业大学 | A kind of Compact type broadband end-fired array array antenna |
| CN106252902B (en) * | 2016-09-28 | 2023-03-24 | 广东工业大学 | Compact broadband end-fire array antenna |
| CN107394360A (en) * | 2017-01-23 | 2017-11-24 | 华南理工大学 | A kind of microband paste yagi aerial of collection space ISM energy of electromagnetic fields |
| CN107196054A (en) * | 2017-05-22 | 2017-09-22 | 王奕贝 | The Quasi-Yagi antenna of wireless communication system |
| CN107453039A (en) * | 2017-07-03 | 2017-12-08 | 南京理工大学 | A kind of micro-strip yagi aerial |
| CN107516769A (en) * | 2017-09-28 | 2017-12-26 | 中国联合网络通信集团有限公司 | The antenna of antenna pattern restructural |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20161226 |