CN101626112A - Broadband full-wave symmetrical element antenna - Google Patents
Broadband full-wave symmetrical element antenna Download PDFInfo
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- CN101626112A CN101626112A CN200810029381A CN200810029381A CN101626112A CN 101626112 A CN101626112 A CN 101626112A CN 200810029381 A CN200810029381 A CN 200810029381A CN 200810029381 A CN200810029381 A CN 200810029381A CN 101626112 A CN101626112 A CN 101626112A
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Abstract
A broadband full-wave symmetrical element antenna comprises a primary radiator and a balanced feed device, wherein the balanced feed device feeds the primary radiator, namely, the balanced feed device excites the primary radiator. The broadband full-wave symmetrical element antenna is characterized in that: the broadband full-wave symmetrical element antenna further comprises a secondary radiator which is taken as a parasitic element, wherein the secondary radiator is positioned over the primary radiator; the primary radiator is an excitation unit and has a length corresponding to a full wavelength of a low frequency range; and the secondary radiator is the parasitic element which is excited by the primary radiator and is electromagnetically coupled with the primary radiator. The broadband full-wave symmetrical element antenna avoids a defect that input impedance of a full-wave symmetrical radiator is too high; the primary radiator in a form of the full-wave symmetrical radiator is excited by adopting a coupling feed mode or a directly-welding feed mode, the excited primary radiator excites the passive secondary radiator which is the parasitic element over the primary radiator, and the primary radiator is electromagnetically coupled with the secondary radiator, so that the excitation unit which is the primary radiator in the full wavelength is resonated in the low frequency range of a working frequency, while the secondary radiator is resonated in a high frequency range of the working frequency. Compared with the prior art, the broadband full-wave symmetrical element antenna has the advantage that a standing-wave ratio exceeds by 50 percent relative to a bandwidth when the SWR is less than 1.5.
Description
[technical field]
The present invention relates to a kind of antenna.
[technical background]
The polynary public of turning to of mobile communications network has brought colourful service, and the epoch of multiple network technology co-existence arrive.
Net the development trend of fusion and the follow-up evolution of network in order to adapt to mobile communication more, avoid overlapping construction and invest, wish antenna broadband operation as far as possible.
According to China's TD-SCDMA network demand of operation soon at present, it is 1880～1920MHz/2010～2025MHz/2300～2400MHz that smart antenna requires operating frequency, and its relative bandwidth surpasses 22%; Digital communications network (DCN) communication frequency is 1710-1880MHz, personal communication service (PCS) communication frequency is 1850-1990MHz, Universal Mobile Telecommunications System (UMTS) communication frequency is 1920-2170MHz, China's time division duplex (TDD) communication frequency is 2300-2400MHz, and the main communication frequency of WiMAX is 2300-2700MHz.1710-2400MHz relative band width surpasses 33%, and up to the present 1710-2700MHz relative band width, does not find as yet in the prior art that the relative band width surpasses the mobile communication Bipolarization antenna for base station more than 25% near 45%.Therefore, seek the wide as far as possible antenna basic radiating element of a kind of relative bandwidth and become one of most critical technology that realizes the broadband array antenna.
[summary of the invention]
The object of the present invention is to provide a kind of broadband full-wave doublet antenna.
For achieving the above object, a kind of broadband full-wave doublet antenna of the present invention comprises main radiator, the balanced feeding device, the balanced feeding device promptly encourages main radiator to the main radiator feed, it is characterized in that: also comprise the inferior radiant body as parasitic element, described time radiant body is positioned at directly over the main radiator, and described main radiator is an exciting unit, the all-wave of the corresponding low-frequency range of length is long, inferior radiant body is a parasitic element, encouraged by main radiator, and the electromagnetic coupled effect takes place to each other.
Above-mentioned radiant body is fixed in insulating material directly over the antenna main radiator, the about 0.05-0.1 wavelength of relative altitude.
Above-mentioned balanced feeding device is made up of excitation heart yearn and balance Ba Lun two parts, and the excitation heart yearn of Compositional balance feeder equipment can be the coupling feed, also can be directly to weld feed.
Above-mentioned excitation heart yearn is positioned at balance Ba Lun inside, and excitation heart yearn and balance Ba Lun constitute a pair of microstrip transmission line, and the input and the feeding network of array antennas of described excitation heart yearn link.
Above-mentioned main radiator is made up of the single polarization symmetrical dipole, and balance Ba Lun is by being parallel to each other and the pair of metal cylinder of bottom short circuit is formed.
Above-mentioned main radiator is made up of mutually orthogonal dual polarization symmetrical dipole, and balance Ba Lun is by being parallel to each other and two pairs of metal cartridges of bottom short circuit are formed.
Above-mentioned balance Ba Lun and main radiator are designed to one on physical structure.
The present invention has evaded the too high defective of all-wave symmetrical dipole input impedance, adopt the coupling feeding classification or directly weld the main radiator that feeding classification encourages all-wave symmetrical dipole form, it is parasitic element that this main radiator of excited target encourages passive radiant body of its top again, the electromagnetic coupled effect takes place with time radiant body in main radiator to each other, its result makes that the long exciting unit of all-wave is the low-frequency range of main radiator resonance in operating frequency, and inferior radiant body resonance is in the high band of operating frequency.Compared with prior art, the invention has the advantages that: SWR＜1.5 o'clock, the standing-wave ratio relative bandwidth surpasses 50%.
[description of drawings]
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the vertical view of the embodiment of the invention one;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the B-B cutaway view of Fig. 2;
Fig. 5 is an actual measurement standing-wave ratio curve that polarization is corresponding of the embodiment of the invention one;
Fig. 6 is the corresponding actual measurement standing-wave ratio curve of another polarization of the embodiment of the invention one;
Fig. 7 is two actual measurement isolation curves that polarization is corresponding of the embodiment of the invention one.
Fig. 8 is the structural representation of the embodiment of the invention two;
Fig. 9 is the structural representation of the embodiment of the invention three;
Figure 10 is the structural representation of the embodiment of the invention four;
Figure 11 is the structural representation of the embodiment of the invention five;
[embodiment]
Referring to figs. 1 to Fig. 4, a kind of broadband full-wave doublet antenna of the present invention comprises main radiator 1, and balanced feeding device, balanced feeding device promptly encourage main radiator to main radiator 1 feed and as the inferior radiant body 3 of parasitic element.Described main radiator is an exciting unit, is made up of mutually orthogonal dual polarization symmetrical dipole, and the all-wave of the corresponding low-frequency range of length is long, and two arms of main radiator oscillator can equal length (also can unequal length).Described time radiant body 3 is the square sheet metal, is fixed in directly over the aerial radiation main body 1 with insulating material 5, and the about 0.05-0.1 wavelength of relative altitude is encouraged by main radiator, and main radiator with time radiant body the electromagnetic coupled effect takes place to each other.Above-mentioned balanced feeding device is made up of excitation heart yearn 6 and balance Ba Lun 4 two parts, and the excitation heart yearn is the coupling feed, and balance Ba Lun is by being parallel to each other and two pairs of metal cartridges of bottom short circuit are formed, and balance Ba Lun 4 and main radiator 1 are designed to one on physical structure.Present embodiment is provided with reflecting plate 2, balance Ba Lun is fixed on the reflecting plate 2 by the bottom, plays the effect of supporting main radiator 1, and balance Ba Lun bottom has hole 7, reflecting plate 2 corresponding sites also have hole, link so that the excitation heart yearn passes with feeding network of array antennas.
With reference to figure 5, Fig. 6 and Fig. 7, among the embodiment one, the thickness of aluminium alloy reflecting plate is 1.5mm, size is 150mm * 150mm, and the high 20mm in limit, the total length of main radiator are 160mm, inferior radiant body is of a size of 50mm * 50mm * 1mm, antenna places microwave dark room, uses the curve of network analyzer actual measurement to show, the standing-wave ratio of two polarization correspondences is respectively 55.4% and 51.5% less than 1.5 relative bandwidth; The corresponding isolation of two polarization in the 1500MHz-2600MHz frequency band range less than-30dB.
Embodiment two, and with reference to figure 8, a present embodiment and a last embodiment difference are the circle that is shaped as of time radiant body 3.
Embodiment three, and with reference to figure 9, present embodiment and previous embodiment difference are the cross that is shaped as of time radiant body 3.
Embodiment four, and with reference to Figure 10, present embodiment and previous embodiment difference are the square loop that is shaped as of time radiant body 3.
Embodiment five, and with reference to Figure 11, present embodiment and previous embodiment difference are the annulus that is shaped as of time radiant body 3.
The thickness of of the present invention radiant body, shape can not be subjected to the limitation of the foregoing description, can be in-line, rectangle, ellipse, pyramid type, straight-flanked ring, vesica piscis or other arbitrary shape.
Claims (9)
1, a kind of broadband full-wave doublet antenna, comprise main radiator, the balanced feeding device, the balanced feeding device promptly encourages main radiator to the main radiator feed, it is characterized in that: also comprise the inferior radiant body as parasitic element, described time radiant body is positioned at directly over the main radiator, described main radiator is an exciting unit, and the all-wave of the corresponding low-frequency range of length is long, and inferior radiant body is a parasitic element, encouraged by main radiator, the electromagnetic coupled effect takes place to each other.
2, a kind of broadband full-wave doublet antenna according to claim 1 is characterized in that: described radiant body is fixed in insulating material directly over the antenna main radiator, the about 0.05-0.1 wavelength of relative altitude.
3, a kind of broadband full-wave doublet antenna according to claim 1, it is characterized in that: described balanced feeding device is made up of excitation heart yearn and balance Ba Lun two parts, the excitation heart yearn of Compositional balance feeder equipment can be the coupling feed, also can be directly to weld feed.
4, a kind of broadband full-wave doublet antenna according to claim 3, it is characterized in that: described excitation heart yearn is positioned at balance Ba Lun inside, excitation heart yearn and balance Ba Lun constitute a pair of microstrip transmission line, and the input and the feeding network of array antennas of described excitation heart yearn link.
5, a kind of broadband full-wave doublet antenna according to claim 3, it is characterized in that: described main radiator is made up of the single polarization symmetrical dipole, and balance Ba Lun is by being parallel to each other and the pair of metal cylinder of bottom short circuit is formed.
6, a kind of broadband full-wave doublet antenna according to claim 3, it is characterized in that: described main radiator is made up of mutually orthogonal dual polarization symmetrical dipole, and balance Ba Lun is by being parallel to each other and two pairs of metal cartridges of bottom short circuit are formed.
7, a kind of broadband full-wave doublet antenna according to claim 3, it is characterized in that: balance Ba Lun and main radiator are designed to one on physical structure.
8, a kind of broadband full-wave doublet antenna according to claim 1 is characterized in that: two arms of main radiator oscillator can equal length or unequal length.
9, according to claim 1 or 3 or 4 described a kind of broadband full-wave doublet antennas, it is characterized in that: if described broadband full-wave doublet antenna is provided with reflecting plate, then described balance Ba Lun is fixed on the reflecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810029381A CN101626112A (en) | 2008-07-11 | 2008-07-11 | Broadband full-wave symmetrical element antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810029381A CN101626112A (en) | 2008-07-11 | 2008-07-11 | Broadband full-wave symmetrical element antenna |
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| CN101626112A true CN101626112A (en) | 2010-01-13 |
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| CN200810029381A Pending CN101626112A (en) | 2008-07-11 | 2008-07-11 | Broadband full-wave symmetrical element antenna |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013562A (en) * | 2010-09-29 | 2011-04-13 | 西安空间无线电技术研究所 | Broadband bipolarizing antenna |
| CN102110875A (en) * | 2010-12-21 | 2011-06-29 | 东莞市晖速天线技术有限公司 | Mobile communication base station and wideband dual-polarization vibrator thereof |
| CN103401062A (en) * | 2013-08-13 | 2013-11-20 | 南京澳博阳射频技术有限公司 | Dual-polarized broadband radiating element used on TD-LTE intelligent antenna |
| CN103474755A (en) * | 2013-09-05 | 2013-12-25 | 广东博纬通信科技有限公司 | Dual-polarization broadband antenna oscillator unit and broadband antenna |
| CN103715519A (en) * | 2013-06-09 | 2014-04-09 | 京信通信技术(广州)有限公司 | Dual polarization array antenna and radiation units thereof |
| CN103828126A (en) * | 2011-09-22 | 2014-05-28 | 阿尔卡特朗讯 | Ultrabroadband antenna |
| CN103947041A (en) * | 2011-11-15 | 2014-07-23 | 阿尔卡特朗讯 | Wideband antenna |
| CN104167597A (en) * | 2014-08-21 | 2014-11-26 | 摩比天线技术（深圳）有限公司 | Radiation unit of TD-LTE intelligent antenna |
| CN104885301A (en) * | 2012-12-20 | 2015-09-02 | 迪尔公司 | Antenna for satellite navigation receiver |
| CN106207456A (en) * | 2016-08-22 | 2016-12-07 | 广东通宇通讯股份有限公司 | A kind of multifrequency antenna |
| CN112567574A (en) * | 2018-08-03 | 2021-03-26 | 劲通开曼有限公司 | Parasitic element for isolating orthogonal signal paths and creating additional resonance in dual-polarized antennas |
| CN112909583A (en) * | 2021-02-05 | 2021-06-04 | 武汉虹信科技发展有限责任公司 | Multi-system integrated antenna |
-
2008
- 2008-07-11 CN CN200810029381A patent/CN101626112A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013562A (en) * | 2010-09-29 | 2011-04-13 | 西安空间无线电技术研究所 | Broadband bipolarizing antenna |
| CN102110875A (en) * | 2010-12-21 | 2011-06-29 | 东莞市晖速天线技术有限公司 | Mobile communication base station and wideband dual-polarization vibrator thereof |
| CN102110875B (en) * | 2010-12-21 | 2013-12-18 | 东莞市晖速天线技术有限公司 | Mobile communication base station and wideband dual-polarization vibrator thereof |
| CN103828126A (en) * | 2011-09-22 | 2014-05-28 | 阿尔卡特朗讯 | Ultrabroadband antenna |
| CN103947041A (en) * | 2011-11-15 | 2014-07-23 | 阿尔卡特朗讯 | Wideband antenna |
| US9287617B2 (en) | 2011-11-15 | 2016-03-15 | Alcatel Lucent | Wideband antenna |
| CN103947041B (en) * | 2011-11-15 | 2016-10-05 | 阿尔卡特朗讯 | Broad-band antenna |
| CN104885301B (en) * | 2012-12-20 | 2018-04-27 | 迪尔公司 | antenna for satellite navigation receiver |
| CN104885301A (en) * | 2012-12-20 | 2015-09-02 | 迪尔公司 | Antenna for satellite navigation receiver |
| CN103715519A (en) * | 2013-06-09 | 2014-04-09 | 京信通信技术(广州)有限公司 | Dual polarization array antenna and radiation units thereof |
| CN103401062A (en) * | 2013-08-13 | 2013-11-20 | 南京澳博阳射频技术有限公司 | Dual-polarized broadband radiating element used on TD-LTE intelligent antenna |
| CN103474755A (en) * | 2013-09-05 | 2013-12-25 | 广东博纬通信科技有限公司 | Dual-polarization broadband antenna oscillator unit and broadband antenna |
| CN104167597A (en) * | 2014-08-21 | 2014-11-26 | 摩比天线技术（深圳）有限公司 | Radiation unit of TD-LTE intelligent antenna |
| CN106207456A (en) * | 2016-08-22 | 2016-12-07 | 广东通宇通讯股份有限公司 | A kind of multifrequency antenna |
| CN112567574A (en) * | 2018-08-03 | 2021-03-26 | 劲通开曼有限公司 | Parasitic element for isolating orthogonal signal paths and creating additional resonance in dual-polarized antennas |
| EP3830900A4 (en) * | 2018-08-03 | 2022-05-04 | Quintel Cayman Limited | Parasitic elements for isolating orthogonal signal paths and generating additional resonance in a dual-polarized antenna |
| CN112567574B (en) * | 2018-08-03 | 2022-05-10 | 劲通开曼有限公司 | Parasitic element for isolating orthogonal signal paths and creating additional resonance in dual-polarized antennas |
| CN112909583A (en) * | 2021-02-05 | 2021-06-04 | 武汉虹信科技发展有限责任公司 | Multi-system integrated antenna |
| CN112909583B (en) * | 2021-02-05 | 2023-07-04 | 中信科移动通信技术股份有限公司 | Multi-system fusion antenna |
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Application publication date: 20100113 |