CN2924816Y - Dual-polarization antenna - Google Patents
Dual-polarization antenna Download PDFInfo
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- CN2924816Y CN2924816Y CN 200620124650 CN200620124650U CN2924816Y CN 2924816 Y CN2924816 Y CN 2924816Y CN 200620124650 CN200620124650 CN 200620124650 CN 200620124650 U CN200620124650 U CN 200620124650U CN 2924816 Y CN2924816 Y CN 2924816Y
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- antenna
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- radiant panel
- band line
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Abstract
The utility model discloses a dual-polarized antenna, which includes an excitation strip line, an open slot radiant panel, a reflective plate and a feed cable, a metal line of feed cable is connected with the excitation strip line, a shielding layer of feed cable is connected with the open slot radiant panel as a grounding terminal; the other metal line of feed cable is connected with the excitation strip line, and the shielding layer of feed cable is connected with the reflective plate as a grounding terminal. The utility model can greatly improve the polarized insulation of the antenna, effectively reduce the generated coupling effect of the feed cable in the antenna array and reduce the production costs of dual-polarized antenna.
Description
Technical field
The utility model relates to the antenna technical field of mobile radio system, relates in particular to a kind of dual polarized antenna.
Background technology
Antenna is an energy replacement equipment, is passive device, and it mainly acts on is radiation or receives radio wave, is electromagnetic wave with high frequency current transitions during radiation, converts electrical energy into electromagnetic energy; During reception electromagnetic wave is converted to high-frequency current, electromagnetic energy is converted to electric energy.The performance quality of antenna directly influences the covering and the service quality of mobile communications network, so antenna has very big effect in cordless communication network.
Along with the antenna for base station technology rapid development, the demand of network application is more and more higher to the performance requirement of antenna, and the performance index of described antenna have bandwidth, secondary lobe and front and back to compare etc.Two or more lobes are arranged in directional diagram usually, and wherein Zui Da lobe is called main lobe, and remaining is called secondary lobe.The front and back of antenna are than the quality that has shown that antenna suppresses back lobe, front and back are than the ratio of lobe maximum level before and after being exactly, wherein, preceding lobe is exactly the maximum signal of antenna pattern, and back lobe is exactly the maximum signal between the antenna pattern back side 150 degree and 210 degree.Than low antenna, the back lobe of antenna might produce area covered, causes the handoff relation confusion before and after selecting for use, produces dropped call.
In order to satisfy requirement such as is compared in bandwidth, secondary lobe and the front and back of antenna, a kind of flat plane antenna of the prior art is achieved in that described antenna is to adopt plane perforate coupling, the multilayer microstrip structure is constituted, the right-angled intersection seam is adopted in cracking of it, the back edge of antenna comprises the reflector of a metal, this reflector comprises the hollow structure of a box-like compartment, this compartment and emission sheet, corresponding quadrature slit to the feed element placement of checking the number, microwave energy is sent to each feed element by feeder line.The prior art can satisfy the performance requirement of bandwidth, secondary lobe and front and back ratio to antenna, and in addition, described prior art not only can be blocked the microwave propagation in the hollow metal structure, but also can avoid any the intercoupling between the quadrature slit.Wherein, described coupling is the operation that all can influence system when needing only element of update system.
Because the right-angled intersection seam is adopted in cracking of above-mentioned prior art midplane antenna, the connection that will cross one another of the radiating slot of two polarization, die and produce coupling effect between two polarization avoiding aerial array, and then reduced the polarization isolation of antenna, described polarization isolation is: suppose that from the power of a port input signal be P1, the power that receives same signal from the other end is P2, and the difference of P1 and P2 is the polarization isolation of antenna.The layout of the feeder line of flat plane antenna part is in the electromagnetic field couples radiation scope simultaneously, and the electromagnetic radiation meeting produces certain coupling effect to feeder line, and then influences antenna performance.In addition, the aerial array of the prior art adopts the multilayer microstrip structure to constitute, so cost is very high.Therefore, the polarization isolation of antenna is lower in the above-mentioned prior art, and feeder line meeting generation coupling effect in aerial array, and the manufacturing cost of antenna is higher simultaneously.
The utility model content
The technical problems to be solved in the utility model provides a kind of dual polarized antenna, to increase substantially the antenna polarization isolation.
For solving the problems of the technologies described above, the utility model provides a kind of dual polarized antenna, and described dual polarized antenna is achieved in that
A kind of dual polarized antenna, described dual polarized antenna comprise two excitation band lines, the radiant panel that cracks, reflecting plate and two feeder cables,
Wherein, the metal wire of a feeder cable is connected with an excitation band line, and the screen of described feeder cable is connected as earth terminal with the radiant panel that cracks; The metal wire of another feeder cable is connected with another excitation band line, and the screen of described feeder cable is connected as earth terminal with reflecting plate.
Wherein, radiant panel and the reflecting plate insulation of cracking is connected.
Wherein, comprise on the radiant panel that cracks and cracking that described shape of cracking is a double T butt joint shape seam.
Wherein, the excitation band line is placed on the both sides of the radiant panel that cracks respectively.
Wherein, the excitation band line is placed on a side of the radiant panel that cracks simultaneously.
Wherein, feeder cable is received the reflecting plate back side and is formed feeder network.
Above technical scheme as can be seen, a kind of dual polarized antenna that the utility model provides has following beneficial effect:
At first, owing to the utility model employing two-way polarization and respectively in radiant panel and reflecting plate the mode of cracking as earth terminal, and then make polarization current can not flow to another road polarization from one tunnel polarization, adopt perforate coupled modes in plane to compare with aerial array in the prior art, the utility model can improve the polarization isolation of antenna significantly.
Further and since cracking between radiant panel and the reflecting plate in the utility model be insulation or do not have metal and connect, can guarantee further that no current passes through between the two-way polarization, thereby make the polarization isolation of antenna obtain further raising.
Further, because cracking in the utility model adopted double T butt joint shape seam mode, adopting right-angled intersection to crack with aerial array in the prior art compares, the cross of prior art cracks and can directly cause the two-way polarization to be intersected, and the utility model can guarantee that any radiating slot can not intersect, and then significantly reduce mutual coupling between the two-way polarization, from and increased the polarization isolation of antenna.Simultaneously, the mode because the employing of the dual polarized antenna in the utility model metallic plate cracks can make antenna have broader bandwidth like this, front and back are than big, and secondary lobe is low, characteristics such as gain height, and the high conformity of the directional diagram in broad frequency band, thereby improved the performance of antenna.
Further, because the excitation band line is placed on the both sides of the radiant panel that cracks respectively in the utility model, can reduces by two couplings between the excitation band line like this, and then improve the performance of antenna.
Further, form the feeder network mode owing in the utility model feeder cable is received the reflecting plate back side, can avoid the radiation fin of feeder cable and antenna like this and crack producing coupling between the radiant panel, and then can effectively reduce the coupling that feeder cable is subjected in aerial array, simultaneously also be difficult for causing the variation of antenna pattern, thereby improved the performance of antenna effectively.
At last, because the dual polarized antenna in the utility model adopts the metal manufacturing, adopt the little band design of multilayer with respect to antenna in the prior art, the utility model greatly reduces production cost.
Description of drawings
Fig. 1 excitation band line connection diagram that goes up of the present utility model;
Fig. 2 excitation band line connection diagram down of the present utility model;
Fig. 3 cellular construction figure of the present utility model.
Embodiment
The utility model provides a kind of dual polarized antenna, and described dual polarized antenna is a kind of antenna that adopts the metallic plate mode of cracking to design.Basic thought of the present utility model is: described dual polarized antenna comprises the excitation band line, the radiant panel that cracks, reflecting plate and feeder cable, the metal wire of one feeder cable is connected with an excitation band line, and the screen of described feeder cable is connected as earth terminal with the radiant panel that cracks; The metal wire of another feeder cable is connected with another excitation band line, and the screen of described feeder cable is connected as earth terminal with reflecting plate.
The polarization of so-called antenna, the electric field strength direction that forms when just being meant aerial radiation.When electric field strength direction during perpendicular to ground, this electric wave just is called vertically polarized wave; When the electric field strength direction was parallel to ground, this electric wave just was called horizontal polarized wave.Because the characteristic of electric wave, the signal that has determined horizontal polarization to propagate can produce polarization current at big ground surface when ground proximity, polarization current decays electric field signal rapidly because of being subjected to the earth impedance influences to produce heat energy, the perpendicular polarization mode then is difficult for producing polarization current, thereby avoided the significantly decay of energy, guaranteed the effect spread that has of signal.With regard to its mentality of designing, described dual polarized antenna generally is divided into vertical and horizontal polarization and ± 45 ° of polarization dual modes, and the latter is better than the former on the performance, and therefore most of employing at present is ± 45 ° of polarization modes.Dual polarized antenna has made up+45 ° and-45 ° of two antenna that the consequent pole direction is mutually orthogonal, and is operated in simultaneously under the transmission duplex pattern, has saved the antenna amount of each sub-district greatly; Be orthogonal polarization owing to ± 45 ° simultaneously, effectively guaranteed the good result of diversity reception.
The main effect of dual polarized antenna is radiation or receives radio wave, is electromagnetic wave with high frequency current transitions during radiation, converts electrical energy into electromagnetic energy; During reception electromagnetic wave is converted to high-frequency current, electromagnetic energy is converted to electric energy, so at every moment all there is electromagnetic field in dual polarized antenna.
By the loop of magnetic field induction, its electromagnetic field can represent that the gross area in this voltage source size and loop is directly proportional with voltage source.In order to reduce the coupling effect in magnetic field, must reduce the area in loop.When an electric field exists, between power supply and ground plane, can produce a current source, electric field can not be coupled between the circuit at circuit, and can be coupled between the earth connection at cabling.But,,, also can be coupled between the earth connection at cabling so electromagnetic field can be coupled between the circuit at circuit because electric field can follow it to produce for magnetic field.Use power supply and ground plane can reduce the inductance value of power distribution system,, then can reduce the voltage drop of circuit board if the characteristic impedance of power distribution system is reduced.In addition, when reducing characteristic impedance, the capacitance between power plane and the ground plane can increase, and this capacitance can make any inductive voltage value descend, the effect of uncoupling that Here it is, described uncoupling are exactly the operation that can not influence system by any way during update system.
In addition, when holding wire shuttles back and forth, will produce big loop area between element, and holding wire can produce electromagnetic interference to element, because the problem that the signal circuit area is produced is more than the problem that power distribution system produced.Reducing the simplest method of loop area at present is many earth connections of design, and all is connected to the earth point of base, earth point is connected on the metal structure usually.
In sum, in conjunction with the accompanying drawings embodiment of the present utility model is described in detail again below.
With reference to Fig. 1, Fig. 1 is the excitation band line connection diagram that goes up of the present utility model, last excitation band line 1 is placed on a side of the radiant panel 6 that cracks, and last excitation band line 1 is at radiation fin 8 and crack between the radiant panel 6, usually fix with ply-yarn drill, feeder cable 11 is connected with the end of last excitation band line 1, and wherein said end is to go up excitation band line distributing point 4, and last excitation band line earth point 9 is connected with the outer conductor of feeder cable 11.
With reference to Fig. 2, Fig. 2 is an excitation band line connection diagram down of the present utility model, following excitation band line 2 is placed on a side of the radiant panel 6 that cracks, and following excitation band line 2 is cracking between radiant panel 6 and the reflecting plate 7, usually fix with ply-yarn drill, feeder cable 12 is connected with following excitation band line distributing point 5, and last excitation band line earth point 9 is connected with the outer conductor of feeder cable 11.
With reference to Fig. 3, Fig. 3 is cellular construction figure of the present utility model, described cellular construction comprise excitation band line 1, down excitation band line 2, crack 3, the radiant panel 6 that cracks, reflecting plate 7, radiation fin 8, feeder cable 11 and feeder cable 12, usually will go up excitation band line 1 and following excitation band line 2 and be referred to as the excitation band line, feeder cable 11 and feeder cable 12 are referred to as feeder cable.Last excitation band line 1 and following excitation band line 2 are placed on the both sides of the radiant panel 6 that cracks respectively, last excitation band line 1 is at radiation fin 8 and crack between the radiant panel 6, following excitation band line 2 is cracking between radiant panel 6 and the reflecting plate 7, normally uses ply-yarn drill constant excitation band line.Feeder cable 11 vertically passes reflecting plate 7 and is connected with last excitation band line 1 with aperture on the radiant panel 6 that cracks, and the aperture that feeder cable 12 vertically passes on the reflecting plate 7 is connected with following excitation band line 2.In addition, columniform plastic support post passes radiation fin 8 simultaneously, the radiant panel 6 that cracks is connected with aperture on the reflecting plate 7, usually also be radiation fin 8, crack radiant panel 6 and reflecting plate 7 to be fixed with ply-yarn drill, radiation fin 8 is sides that are placed on the radiant panel 6 that cracks, and does not have annexation with other parts.Wherein, each parts of dual polarized antenna all adopt metal to make, and described metal is aluminium, copper etc., greatly reduces production cost like this.
Described feeder cable is used for last excitation band line 1 or following excitation band line 2 are carried out feed, specifically comprises inner wire, interior insulation, outer conductor and four parts of oversheath.Inner wire is a metal wire, and outer conductor is exactly a cylindrical conductor, also is screen usually, fills dielectric between inner wire and the outer conductor.Outer conductor all is a ground connection in the practical application, disturbs so to external world to have excellent shielding effect, so the better performances of the anti-electromagnetic interference of feeder cable.
Present embodiment is with radiant panel 6 ground connection of cracking with one tunnel polarization, another road polarization is with reflecting plate 7 ground connection, polarization current can not flow to the polarization of another road from one tunnel polarization like this, has avoided in the dual polarized antenna coupling between two polarization, thereby can improve the polarization isolation of antenna greatly.The polarization isolation of antenna is high more, just represents that the uncorrelated characteristic of signal is just good more, and signal is not just allowed to be subject to disturb more.
Wherein, crack no metal between radiant panel 6 and the reflecting plate 7 connects or insulation, can guarantee further that therefore no current passes through between the two-way polarization, thereby the polarization isolation of antenna also is improved further.The cracking on the radiant panel 6 of cracking 3 adopted 2 * 2 double T butt joint shape seam, cracks 3 distribution shape as shown in Figure 3
The shape seam.Crack and 3 adopt 2 * 2 double T butt joint shape seam can guarantee that any radiating slot can not intersect, significantly reduced the mutual coupling between the two-way polarization like this, increased the polarization isolation of dual polarized antenna.
In addition, antenna is to adopt the metallic plate design of cracking in the present embodiment, can make antenna have broader bandwidth like this, front and back are than big, and secondary lobe is low, characteristics such as gain height, and the high conformity of the directional diagram in broad frequency band, this antenna also can be widely used in multiple frequency range in addition.Antenna pattern is the figure that characterizes aerial radiation feature space angular relationship, as the transmitting antenna power or the formed figure of field intensity that radiate of direction from different perspectives.Usually the stereo directional figure that represents antenna with two orthogonal horizontal radiation patterns that comprise the greatest irradiation direction and height pattern.Different antennas has different directional diagrams, concentrates the degree of radiation and the sharp-pointed degree of directional diagram for representing their, below the notion of incoming direction parameter.
Desirable point source aerial radiation does not have directivity, radiation intensity equates on all directions, now compare as standard and actual antennas with desirable some source antenna, under identical radiant power, the ratio of the electric field strength that the electric field strength square that certain antenna results from certain point and desirable some source antenna produce in same point square is called the directivity parameter of this point.
Gain and directivity parameter all are to characterize the concentrated parameter of radiant power, but both are not quite similar, and gain defines under same power output condition, and directivity factor is undefined in same radiant power condition.Antenna gain just is meant under the condition that input power equates, the ratio of the field intensity that actual antennas and desirable radiating element produce in same point place, space square, the i.e. ratio of power.Antenna gain is to be used for weighing the ability of antenna towards a specific direction receiving and transmitting signal, and it is to select one of most important parameter of antenna for base station.Because the radiation intensity of antenna all directions is also unequal, the directivity parameter of antenna changes along with the different of point of observation with the gain meeting, but its variation tendency is consistent.Gain is general relevant with antenna pattern, and the major lobe of directional diagram is narrow more, and secondary lobe is more little, and gain is just high more.It is high more to gain under the identical condition, and the distance of radio wave propagation is far away more.
In view of the restriction of machining accuracy and the requirement of intensity, the width of excitation band line and thickness are all bigger, therefore will go up the both sides that excitation band line 1 and following excitation band line 2 are separately fixed at the radiant panel 6 that cracks, help reducing two couplings between the excitation band line like this, and then improve the performance of antenna.In addition, because the width and the thickness of feeder cable are all bigger, easy like this cause the radiation fin 8 of feeder cable and antenna and crack between the radiant panel 6 produce coupling, also cause simultaneously the variation of antenna pattern easily, have a strong impact on antenna performance, therefore feeder cable is received reflecting plate 7 back and formed feeder network, thereby make the utility model can effectively improve the performance of antenna.
From the above, be to adopt coaxial cable that the excitation band line is carried out feed in the present embodiment, except that coaxial cable, can also use symmetrical cable etc. that the excitation band line is carried out feed.In addition, the dual polarized antenna in the present embodiment be the excitation band line in the both sides of cracking radiant panel, crack and adopt double T butt joint shape seam, in addition, the excitation band line can also be simultaneously in a side of the radiant panel that cracks, and cracks can also adopt T shape to stitch or the seam of other shape.As also using the microstrip line mode under the situation about allowing in manufacturing cost, because micro belt line width and thickness are less, and be not easy to take place coupling effect, in aerial array, just microstrip line need not be fixed on the both sides of the radiant panel that cracks.
More than a kind of dual polarized antenna provided by the utility model is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (6)
1, a kind of dual polarized antenna is characterized in that, described dual polarized antenna comprises two excitation band lines, the radiant panel that cracks, reflecting plate and two feeder cables,
Wherein, the metal wire of a feeder cable is connected with an excitation band line, and the screen of described feeder cable is connected as earth terminal with the radiant panel that cracks; The metal wire of another feeder cable is connected with another excitation band line, and the screen of described feeder cable is connected as earth terminal with reflecting plate.
2, dual polarized antenna as claimed in claim 1 is characterized in that, insulation is connected the radiant panel that cracks with reflecting plate.
3, dual polarized antenna as claimed in claim 1 is characterized in that, comprises on the radiant panel that cracks and cracking, and described shape of cracking is a double T butt joint shape seam.
4, as claim 1,2 or 3 described dual polarized antennas, it is characterized in that the excitation band line is placed on the both sides of the radiant panel that cracks respectively.
As claim 1,2 or 3 described dual polarized antennas, it is characterized in that 5, the excitation band line is placed on a side of the radiant panel that cracks simultaneously.
6, dual polarized antenna as claimed in claim 1 is characterized in that, feeder cable is received the reflecting plate back side and formed feeder network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124650 CN2924816Y (en) | 2006-07-10 | 2006-07-10 | Dual-polarization antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124650 CN2924816Y (en) | 2006-07-10 | 2006-07-10 | Dual-polarization antenna |
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| CN2924816Y true CN2924816Y (en) | 2007-07-18 |
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| CN 200620124650 Expired - Fee Related CN2924816Y (en) | 2006-07-10 | 2006-07-10 | Dual-polarization antenna |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103531919A (en) * | 2012-07-05 | 2014-01-22 | 中国电信股份有限公司 | Four-polarized antenna oscillator, four-polarized antenna and four-polarized multi-antenna array |
| CN107453044A (en) * | 2017-07-25 | 2017-12-08 | 重庆邮电大学 | A kind of dual polarization micro-base station mimo antenna unit |
| CN109286063A (en) * | 2018-09-28 | 2019-01-29 | 深圳国人通信股份有限公司 | A kind of dual polarization plane radiating element |
| CN110380202A (en) * | 2019-07-05 | 2019-10-25 | 上海安费诺永亿通讯电子有限公司 | A kind of low cost low section broadband Massive mimo antenna unit |
| CN110957576A (en) * | 2019-12-25 | 2020-04-03 | 电子科技大学 | Ultra-low profile microstrip laminated dual-polarized base station antenna and array |
| CN113519090A (en) * | 2019-03-14 | 2021-10-19 | 华为技术有限公司 | Feeding method and feeding structure for antenna element |
-
2006
- 2006-07-10 CN CN 200620124650 patent/CN2924816Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531919A (en) * | 2012-07-05 | 2014-01-22 | 中国电信股份有限公司 | Four-polarized antenna oscillator, four-polarized antenna and four-polarized multi-antenna array |
| US9698494B2 (en) | 2012-07-05 | 2017-07-04 | China Telecom Corporation Limited | Quadri-polarized antenna radiator, quadri-polarized antenna and quadri-polarized multi-antenna array |
| 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 |
| CN107453044A (en) * | 2017-07-25 | 2017-12-08 | 重庆邮电大学 | A kind of dual polarization micro-base station mimo antenna unit |
| CN109286063A (en) * | 2018-09-28 | 2019-01-29 | 深圳国人通信股份有限公司 | A kind of dual polarization plane radiating element |
| CN113519090A (en) * | 2019-03-14 | 2021-10-19 | 华为技术有限公司 | Feeding method and feeding structure for antenna element |
| CN110380202A (en) * | 2019-07-05 | 2019-10-25 | 上海安费诺永亿通讯电子有限公司 | A kind of low cost low section broadband Massive mimo antenna unit |
| CN110380202B (en) * | 2019-07-05 | 2021-06-08 | 上海安费诺永亿通讯电子有限公司 | Low-cost low-profile broadband Massive MIMO antenna unit |
| CN110957576A (en) * | 2019-12-25 | 2020-04-03 | 电子科技大学 | Ultra-low profile microstrip laminated dual-polarized base station antenna and array |
| CN110957576B (en) * | 2019-12-25 | 2021-01-26 | 电子科技大学 | Ultra-low profile microstrip laminated dual-polarized base station antenna and array |
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| ASS | Succession or assignment of patent right |
Owner name: HUAWEI ANSETT ELECTRONICS CO., LTD., SHENZHEN CITY Free format text: FORMER OWNER: HUAWEI TECHNOLOGY CO., LTD. Effective date: 20091030 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091030 Address after: Building 2, B District, Bantian HUAWEI base, Longgang District, Guangdong, Shenzhen, 518129 Patentee after: Shenzhen Huawei Anjiexin Electrical Co., Ltd. Address before: Bantian HUAWEI headquarters office building, Longgang District, Guangdong City, Shenzhen Province, China: 518129 Patentee before: Huawei Technologies Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20140710 |
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| EXPY | Termination of patent right or utility model |