CN202712422U - Ultra wide-band antenna - Google Patents
Ultra wide-band antenna Download PDFInfo
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- CN202712422U CN202712422U CN 201220343562 CN201220343562U CN202712422U CN 202712422 U CN202712422 U CN 202712422U CN 201220343562 CN201220343562 CN 201220343562 CN 201220343562 U CN201220343562 U CN 201220343562U CN 202712422 U CN202712422 U CN 202712422U
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- uwb
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- radiation patch
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Abstract
The utility model discloses an ultra wide-band antenna, comprising a metal floor (1), a medium substrate (2), a radiation paster (3), a feed branch knot (4), a matching branch knot (5) and a microstrip line feed source (6). The radiation paster (3), the feed branch knot (4) and the matching branch knot (5) are all printed on the right surface of the medium substrate (2), are electrically connected with the microstrip line feed source (6) and show an axial symmetry structure; a T-shaped groove (7) is etched on the metal floor (1) to be as a radiation reflecting plate of the radiation paster (3), and a polarized hole (8) is etched at the central position of the radiation paster (3); the edge of the polarized hole (8) is equipped with two rectangular gaps (9, 10) orthogonal with each other, the point of intersection of the two gaps is overlapped with the central point of the polarized hole (8), and the microstrip line feed source (6) is placed at the edge of the medium substrate (2). The ultra wide-band antenna of the utility model can realize the ultra wide-band characteristics of four circular polarization belts, and can be applied to satellite communication.
Description
Technical field
The utility model belongs to antenna technical field, and particularly a kind of UWB (Ultra Wideband) Antenna can be used for worldwide interoperability for microwave access Wimax, WLAN (wireless local area network) WLAN, and superfrequency X radar and superfrequency Ku radar communicate.
Background technology
Microstrip antenna is simple in structure with it, low section, one dimension miniaturization and the characteristics such as easy of integration, satisfied trend and the requirement of modern wireless communication systems development, obtains using more and more widely.The quality of a wireless communication system depends on the aspects such as antenna, transmitter power, receiver sensitivity and signal processing, and antenna then plays critical effect.Compare with single system communication standard in the past, present marketer wishes that more different technical standards can be applied in the same antenna, and for the different communication code mode of diverse network using, this just requires antenna to have multiple performance.Super wideband multi-band circular polarized antenna has merged the characteristic of UWB (Ultra Wideband) Antenna and multi-band circular polarized antenna, has very high scientific research and is worth.The realization of UWB (Ultra Wideband) Antenna has made antenna cover all wave bands in certain range for wireless communication for system provides multiple communication channel, have satisfied the demand of the integrated and expanding communication capacity of antenna receiving-sending, and have simplified system configuration.Super wideband multi-band circular polarized antenna, the circular polarization Working mould in super wideband passband is realized a plurality of work bands is realized frequency and polarization multiplexing, can not only improve antenna performance, and can reduce to a great extent the cost of whole wireless communication system.Super wideband multi-band circular polarized antenna is widely used in the systems such as radar satellite, radio-frequency (RF) identification, navigation remote sensing, electronic reconnaissance and interference, mainly realizes polarization diversity, the polarization isolation of ground communication; The transmit-receive sharing of mobile station, satellite communication, frequency sharing, frequency agility, anti-multipath fading etc.Yet because many merits performance of antenna itself has caused the complicated of antenna structure.
Microstrip antenna can be divided into micro-strip paster antenna, microband travelling wave antenna and microstrip slot antenna three classes basically; Micro-strip paster antenna can be divided into rectangular microstrip antenna, Circular Microstrip Antennas, triangle, pentagon, ellipse and other possible geometric figure microstrip antennas by the difformity of paster; Be broadly divided into two classes by implementation method, i.e. the microstrip antenna that the microstrip antenna of single layer structure realization and stepped construction realize; Microstrip antenna feed mode also has multiple, and what application was maximum in the reality is coaxial feeding, feed microstrip line and three kinds of modes of aperture-coupled.
At present, carried out a series of research work that relevant antenna is realized super wideband multi-band circular polarization characteristics both at home and abroad, and obtained some achievements.Adopt monopole antenna structures in the research more, realize the ultra broadband characteristic of antenna, method is simple, but the polarization mode of this antenna is generally linear polarization, the difficult multi-band circular polarization function that realizes antenna.Some researcher adopts feed or the multilayer dielectric substrate of a plurality of quadratures in antenna, realize the multi-band circular polarization characteristics, although this structure circular polarization is functional, but antenna is difficult to realize the ultra broadband characteristic, and itself increased the complexity of antenna and the coupling between different frequency range and polarization, caused the increase of antenna cost and debugging difficulty.What also some research was adopted is the multi-band circular polarized antenna that is made of the curve microstrip line, this version is irregular, can't determine its feed placement with numerical method, uncommon in practice, and structure relative complex, the main engineering experience of reality that relies on realizes its purpose, has been subject in actual applications certain restriction.Top the whole bag of tricks is because the deficiency that itself exists has limited its application in portable terminal and satellite communication field.
The utility model content
The utility model is for above problem, proposed a kind of simple in structure, UWB (Ultra Wideband) Antenna with four-tape circular polarization characteristics, to satisfy the demand of portable terminal and satellite communication system.
For achieving the above object, the utility model comprises:
Metal floor, square medium substrate, radiation patch, feed minor matters, coupling minor matters and microstrip line feed, described radiation patch is electrically connected with the microstrip line feed by feed minor matters and coupling minor matters, this radiation patch, feed minor matters and coupling minor matters all are printed on the front surface of square medium substrate, structure axisymmetricly, and described metal floor is etched with T-shaped groove, in order to realize the circular polarization of two wave bands in antenna low frequency place, it is characterized in that:
Be etched with the polarization hole on the center of described radiation patch, the edge in this polarization hole is provided with two mutually orthogonal rectangular apertures, and the intersection point in two slits overlaps with the central point in polarization hole.
Described radiating element is circle or rectangle or oval paster.
The polarization hole of etching circular or square or ellipsoidal structure on the described radiating element.
The length-width ratio of described metal floor is 3, as the radiation reflecting plate of radiation patch.
The radius of described circular radiation patch is 6mm-12mm.
The radius in described Circular Polarisation hole is adjustable in the 1.5mm-3mm scope.
Described two rectangular apertures are uneven in length, and width equates that length is value in the 8mm-15mm scope, and width is value in the 0.1mm-1mm scope.
Described microstrip line feed is placed on the edge of square medium substrate.
The dielectric constant of described square medium substrate is between 1-10.
Compared with prior art, the utlity model has following advantage:
1. the utility model is owing to be etched with two rectangular apertures in radiation patch, mutually orthogonal placement, and intersection point overlaps with the central point of radiation patch, by the path that electric current on the change radiation patch is flowed through, has reduced the area of the required radiation patch of antenna.
2. the utility model has increased the electrical length of electric current on the radiation patch, thereby has reduced the area of the required radiation patch of antenna owing to be etched with a polarization hole in radiation patch.
3. the utility model mates the feed that minor matters are regulated antenna owing to adopting, thereby has improved the impedance matching property in the working frequency range, has improved the radiation efficiency of antenna.
4. the utility model is because radiation patch, and feed minor matters and coupling minor matters all are printed on the front surface of medium substrate, and are simple in structure, and compact conformation is easy to process, is convenient to the microwave circuit of radio-frequency front-end integratedly, has reduced design cost and system complexity.
5. the utility model has formed the circular polarization of superfrequency X radar and two frequency ranges of superfrequency Ku radar owing to be etched with a polarization hole and two crossing rectangular aperture structures at radiating element, has realized wider circular polarization band.
6. the utility model can improve according to the actual requirements voluntarily, by changing size and the position of metal floor, radiating element, T-shaped groove, polarization hole and crossing rectangular aperture, regulate Radiation work point, impedance bandwidth and polarization bandwidth, satisfy different application demands, simplicity of design is flexible.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is the structural representation of the utility model embodiment 2;
Fig. 4 is the structural representation of the utility model embodiment 3;
Fig. 5 is return loss emulation and the measured curve figure of the utility model embodiment 1;
Fig. 6 is that the utility model embodiment 1 is at the axial ratio figure of 3.63GHz-3.69GHz;
Fig. 7 is that the utility model embodiment 1 is at the axial ratio figure of 5.18GHz-5.36GHz;
Fig. 8 is that the utility model embodiment 1 is at the axial ratio figure of 10.94GHz-11.05GHz;
Fig. 9 is that the utility model embodiment 1 is at the axial ratio figure of 15.125GHz-17.575GHz;
Figure 10 is that the utility model embodiment 1 is at the left-right-hand circular polarization directional diagram at 3.7GHz place;
Figure 11 is that the utility model embodiment 1 is at the left-right-hand circular polarization directional diagram at 5.1GHz place.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described further:
Embodiment 1:
Referring to Fig. 1 and Fig. 2, UWB (Ultra Wideband) Antenna of the present utility model, comprise: metal floor 1, square medium substrate 2, radiation patch 3, feed minor matters 4, coupling minor matters 5 and microstrip line feed 6, described radiation patch 3 is electrically connected with microstrip line feed 6 by feed minor matters 4 and coupling minor matters 5, and this radiation patch 3, feed minor matters 4 and coupling minor matters 5 all are printed on the front surface of medium substrate 2, axisymmetricly structure; Be etched with polarization hole 8 on the center of radiation patch 3, the intersection point that the edge in this polarization hole 8 is provided with two mutually orthogonal rectangular apertures 9 and 10, two slits overlaps with the central point in polarization hole 8; Microstrip line feed 6 is placed on the edge of medium substrate 2.
Described polarization hole 8 be shaped as circular port, the radius in this polarization hole 8 is made as R, R is adjustable in the 1.5mm-3mm scope, by changing the size of R, can regulate polarization working point and circular polarization bandwidth.When for example R was 2.2mm, antenna was realized circular polarization characteristics at 3.62GHz-3.68GHz in the 4.98GHz-5.22GHz, four frequency bands of 10.82GHz-10.92GHz and 15.15GHz-17.7GHz; When R was 2.3mm, antenna was realized circular polarization characteristics at 3.63GHz-3.69GHz in the 5.18GHz-5.36GHz, four frequency bands of 10.94GHz-11.05GHz and 15.125GHz-17.575GHz; When R was 2.4mm, antenna was realized circular polarization characteristics at 3.62GHz-3.77GHz in the 5.14GHz-5.34GHz, four frequency bands of 10.99GHz-11.11GHz and 14.675GHz-17.875GHz.In this example, the R value is 2.3mm.
Described two rectangular apertures 9 and 10 are uneven in length, and width equates that length is value in the 8mm-14mm scope, and width is value in the 0.1mm-1mm scope.In this example, the length of rectangular aperture 9 is 10mm, and width is 0.5mm, and the length of rectangular aperture 10 is 12mm, and width is 0.5mm, two slits 9 and 10 centers of circle placements that are centrosymmetric about polarization hole 8.
Described Circular Polarisation hole 8 and two rectangular apertures 9 and 10 have been realized the circular polarization of 10.94GHz-11.05GHz and 15.125GHz-17.575GHz frequency range jointly.
The length-width ratio value of described metal floor 1 is 3, and as the radiation reflecting plate of radiation patch 3, in this example, the length of metal floor 1 is 27mm, and wide is 9mm; Be etched with a T-shaped groove 7 on the metal floor 1, this T-shaped groove 7 comprises a vertical rectangular channel and a horizontal rectangular channel, vertically the length of rectangular channel is 4mm, wide is 0.6mm, laterally the length of rectangular channel is 6.9mm, wide is 1.3mm, has realized the circular polarization of 3.63GHz-3.69GHz and 5.18GHz-5.36GHz frequency range.
The radius value of described radiation patch 3 is 8.5mm; The dielectric constant of medium substrate 2 is 4.4, and the length of side is 27mm, and thickness is 1mm; The length of feed minor matters 4 is 6.5mm, and wide is 1.6mm; The length of coupling minor matters 5 is 3mm, and wide is 2mm.
Embodiment 2:
Referring to Fig. 3, UWB (Ultra Wideband) Antenna in the present embodiment, radiating element 3 is ellipse patch, ellipsoidal structure is adopted in the polarization hole 8 of etching on this radiating element 3, the major axis radius of oval radiation patch 3 is 8mm, minor axis radius is 4mm, the major axis radius of the radius in oval polarization hole 8 is 3mm, minor axis radius is 1.5mm, and the length of rectangular aperture 9 is 8mm, and width is 0.1mm, the length of rectangular aperture 10 is 10mm, width is 0.1mm, and the dielectric constant of medium substrate 2 is 1, and all the other structures are identical with embodiment 1.
Embodiment 3:
Referring to Fig. 4, the UWB (Ultra Wideband) Antenna in the present embodiment, radiating element 3 is rectangular patch, square structure is adopted in the polarization hole 8 of etching on this radiating element 3, the length of rectangular radiation patch 3 is 18mm, and wide is 9mm, and the length of side in square polarization hole 8 is 2.3mm, the length of rectangular aperture 9 is 12mm, width is 1mm, and the length of rectangular aperture 10 is 14mm, and width is 1mm, the dielectric constant of medium substrate 2 is 10, and is identical in all the other structures and the embodiment 1.
More than be that three instantiations of the present utility model do not consist of any restriction of the present utility model.
Case effect of the present utility model can further specify by following as a result figure:
Return loss to the utility model embodiment 1 is carried out emulation and measurement, its result as shown in Figure 5, by the emulation of Fig. 5 return loss with measure curve chart as seen, ultra-wideband antenna working frequency range of the present utility model covers 3.2GHz-20GHz, its bandwidth is 16.8GHz, and relative bandwidth is 145%.
To the utility model embodiment 1 respectively at 3.63GHz-3.69GHz, 5.18GHz-5.36GHz, 10.94GHz-11.05GHz and the axial ratio at 15.125GHz-17.575GHz place is carried out emulation, its result is respectively such as Fig. 6, Fig. 7, Fig. 8 and shown in Figure 9, and by the axial ratio figure of Fig. 6, Fig. 7, Fig. 8 and Fig. 9 as seen, the circular polarization relative bandwidth of the utility model in each frequency range is respectively 4%, 4.5%, 1%, 17.4%, realized wide polarization bandwidth.
The left-right-hand circular polarization directional diagram of the utility model embodiment 1 at 3.7GHz and 5.1GHz place carried out emulation, its result as shown in Figure 10 and Figure 11, by the directional diagram of Figure 10 and Figure 11 as seen, the utility model has been realized respectively left-hand circular polarization and right-handed circular polarization at 3.7GHz and 5.1GHz place, and its gain is for more than the 1.5dB.
Claims (9)
1. UWB (Ultra Wideband) Antenna, comprise metal floor (1), square medium substrate (2), radiation patch (3), feed minor matters (4), coupling minor matters (5) and microstrip line feed (6), described radiation patch (3) is electrically connected with microstrip line feed (6) by feed minor matters (4) and coupling minor matters (5), this radiation patch (3), feed minor matters (4) and coupling minor matters (5) all are printed on the front surface of square medium substrate (2), structure axisymmetricly, described metal floor (1) is etched with T-shaped groove (7), in order to realize the circular polarization of two wave bands in antenna low frequency place, it is characterized in that:
Be etched with polarization hole (8) on the center of described radiation patch (3), the edge in this polarization hole (8) is provided with two mutually orthogonal rectangular apertures (9) and (10), and the intersection point in two slits overlaps with the central point in polarization hole (8).
2. a kind of UWB (Ultra Wideband) Antenna according to claim 1 is characterized in that radiating element (3) is circle or rectangle or oval paster.
3. UWB (Ultra Wideband) Antenna according to claim 1, the hole (8) that it is characterized in that polarizing is circular or square or ellipsoidal structure.
4. UWB (Ultra Wideband) Antenna according to claim 1, the length-width ratio that it is characterized in that metal floor (1) is 3, as the radiation reflecting plate of radiation patch (3).
5. UWB (Ultra Wideband) Antenna according to claim 2, the radius that it is characterized in that circular radiation patch (3) is 4mm-9mm.
6. UWB (Ultra Wideband) Antenna according to claim 3 is characterized in that the radius in Circular Polarisation hole (8) is adjustable in the 1.5mm-3mm scope.
7. UWB (Ultra Wideband) Antenna according to claim 1 is characterized in that two rectangular apertures (9,10) are uneven in length, and width equates that length is value in the 8mm-14mm scope, and width is value in the 0.1mm-1mm scope.
8. UWB (Ultra Wideband) Antenna according to claim 1 is characterized in that microstrip line feed (6) is placed on the edge of square medium substrate (2).
9. UWB (Ultra Wideband) Antenna according to claim 1 is characterized in that the dielectric constant of square medium substrate (2) is between 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220343562 CN202712422U (en) | 2012-07-16 | 2012-07-16 | Ultra wide-band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220343562 CN202712422U (en) | 2012-07-16 | 2012-07-16 | Ultra wide-band antenna |
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| CN202712422U true CN202712422U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220343562 Expired - Fee Related CN202712422U (en) | 2012-07-16 | 2012-07-16 | Ultra wide-band antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610908A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Ultra wide band four-tape circularly polarized antenna |
| WO2016119740A1 (en) * | 2015-01-30 | 2016-08-04 | 深圳光启高等理工研究院 | Antenna, antenna system and communication device |
| CN106876943A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of new dual-attenuation UWB antennas |
| CN106876912A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of ultra-wideband antenna based on U-type groove and double J-type grooves |
| CN106876941A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of precipitous ultra wide band resistance antenna of stopband |
| CN106876939A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of precipitous dual-attenuation ultra-wideband antenna of stopband |
| CN106876940A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of new dual-attenuation UWB antennas |
| CN106876942A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of precipitous UWB antennas of new stopband |
| CN112018510A (en) * | 2019-05-31 | 2020-12-01 | 杭州海康威视数字技术股份有限公司 | Ultra-wideband antenna |
-
2012
- 2012-07-16 CN CN 201220343562 patent/CN202712422U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610908A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Ultra wide band four-tape circularly polarized antenna |
| WO2016119740A1 (en) * | 2015-01-30 | 2016-08-04 | 深圳光启高等理工研究院 | Antenna, antenna system and communication device |
| CN106876912A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of ultra-wideband antenna based on U-type groove and double J-type grooves |
| CN106876943A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of new dual-attenuation UWB antennas |
| CN106876941A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of precipitous ultra wide band resistance antenna of stopband |
| CN106876939A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of precipitous dual-attenuation ultra-wideband antenna of stopband |
| CN106876940A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of new dual-attenuation UWB antennas |
| CN106876942A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of precipitous UWB antennas of new stopband |
| CN112018510A (en) * | 2019-05-31 | 2020-12-01 | 杭州海康威视数字技术股份有限公司 | Ultra-wideband antenna |
| CN112018510B (en) * | 2019-05-31 | 2023-02-03 | 杭州海康威视数字技术股份有限公司 | Ultra-wideband antenna |
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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 |
Granted publication date: 20130130 Termination date: 20180716 |
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| CF01 | Termination of patent right due to non-payment of annual fee |