CN103474787A - Dual-polarization planar-array satellite-television reception antenna - Google Patents
Dual-polarization planar-array satellite-television reception antenna Download PDFInfo
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- CN103474787A CN103474787A CN2013103253271A CN201310325327A CN103474787A CN 103474787 A CN103474787 A CN 103474787A CN 2013103253271 A CN2013103253271 A CN 2013103253271A CN 201310325327 A CN201310325327 A CN 201310325327A CN 103474787 A CN103474787 A CN 103474787A
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Abstract
The invention discloses a dual-polarization planar-array satellite-television reception antenna. A polarization direction of a polarization feed network I and a polarization direction of a polarization feed network II are mutually vertical. The polarization feed network I and the polarization feed network II are arranged in an upper plane and a lower plane respectively and combines radiation units into a 2*2 unit array antenna. The polarization feed network I and the polarization feed network II are arranged between the radiation units and the rearmost parts of the polarization feed network I and the polarization feed network II are bent at the back face of the 2*2 unit array antenna. Through compensation, the polarization feed network I and the polarization feed network II are identical in geometry length. Output ports of the polarization feed network I and the polarization feed network II are both arranged on the back face of the 2*2 unit array antenna. The two output ports are corresponding to two input ports of a dual-polarization radio-frequency head and are connected with the two input ports through microstrip lines respectively. The dual-polarization planar-array satellite-television reception antenna has excellent minor lobes and alternative polarization characteristics and comparatively high antenna efficiency and compensated dual-polarization synthetic networks are basically equal in geometry length so that the whole antenna obtains an excellent circular polarization axial ratio characteristic in a bandwidth.
Description
Technical field
The present invention relates to the reception technique field of satellite television, relate in particular to a kind of dual polarization planar array satellite television receiving antenna.
Background technology
Satellite television, as one of three kinds of transmission meanss of TV, all obtains a wide range of applications in countries in the world.Because historical reason, each area adopts operating frequency and polarization mode all to be not quite similar, Europe and the larger area of impact, Europe, for example Australia, Africa, the Middle East, Southeast Asia etc. all adopt the two-wire polarization, and the U.S., Russia, China's (live broadcasting satellite) adopts double-circle polarization.
Adopt dual polarization to be because can take full advantage of the frequency spectrum of planning, transmit more, the program of better quality.When adopting the linear polarization signal carrier, on the earth, the coupling polarization of different regions is relevant to the position of longitude and latitude and satellite.Therefore initial satellite earth antenna is dual-polarized mostly, reflector antenna, and the tuner of selection can be dual-polarized, and plate aerial is also dual-polarized, and for example the SR1000 of Raysat company, adopt micro-strip antenna array to realize dual polarization.In most cases, the user of fixed reception adopts reflector antenna more, and the coupling of linear polarization can realize by the rotation tuner.Vehicle mobile receiving adopts planar array antenna more.The price of early stage mobile-satellite television receiving antenna is very high, and its reason just is that the cost of manufacture of dual polarization flat plate array antenna is too high.When the mould of plastics moulding, the production technology of surface metalation is after the civilian goods field of antenna obtains extensive use, single circular polarization or single fixing slant-polarized antennas are all sold on market, but because the complexity of dual polarization design makes this product delay to emerge.Adopt with antenna aperture and be not complementary, much bigger waveguide network carries out feed to the loudspeaker of larger caliber, greatly reduce the design difficulty of dual polarized antenna, but also bring secondary lobe higher, cross polarization is poor, the problem that antenna efficiency is lower, the antenna gain of the actual acquisition of antenna that a special volume is very large but is not complementary.Make the zone that this antenna can only be stronger for signal, and more much bigger than similar single-polarized antenna volume.Although be used for the polarization coupling of the antenna of fixed reception, can lean on artificial rotation to realize, the switching between dual polarization can not also rely on artificial rotation, brings great inconvenience to the user like this.Therefore dual polarized antenna is only the key of watching the whole programs of satellite television.In automotive field, a broadband, substantially meet district from all parts of the world satellite television and watch the dual polarized antenna of demand, its size is substantially suitable with single polarization especially, and can simple extension, series of products meet the demand that the product of the demand in the strong and weak area of unlike signal could real satisfying the market.When adopting the mould of plastics moulding, the technique of surface metalation, when the cost of individual antenna also hangs down, could obtain the approval in market.
Summary of the invention
The object of the invention is exactly in order to make up the defect of prior art, and a kind of dual polarization planar array satellite television receiving antenna is provided.
The present invention is achieved by the following technical solutions:
A kind of dual polarization planar array satellite television receiving antenna, include dual polarized antenna and dual polarization tuner, described dual polarized antenna includes radiating element, two rectangular waveguide feed mouths that cross is arranged, polarization feeding network one and polarization feeding network two, described radiating element is the rectangular radiation loudspeaker, described rectangular waveguide feed mouth is to radiating element dual polarization feed, described polarization feeding network one is mutually vertical with the polarised direction of polarization feeding network two, polarization feeding network one and two is all synthetic with E-T structure, polarization feeding network one and two lays respectively at, be combined into 2 * 2 cell array antennas in lower two planes and by radiating element, described polarization feeding network one and two is between radiating element, polarization feeding network one and two decline curve the back side at 2 * 2 cell array antennas, by compensation, make polarization feeding network one and two geometrical lengths equate, polarization feeding network one and two delivery outlet are all at the back side of 2 * 2 cell array antennas, two delivery outlets are corresponding with two input ports of described dual polarization tuner, and by microstrip line, connect respectively.
Spacing between described polarization feeding network one and two is 2mm.
The length of side of described radiating element rectangular radiation loudspeaker is less than 1 λ.
Become 16 * 4 cell array antennas and 16 * unit 8 array antenna by copying with minute E-T textural association such as broadband of 2 * 2 cell array antennas, the synthetic E-T between unit adopts the level Four coupling, can guarantee that antenna has wider bandwidth.Bandwidth covers 10.95GHz-12.75GHz, can meet the requirement of watching of satellite television all over the world.
The double-deck comprise network of cross feed structure one feedback Unit one, 2 * 2 all passes through meticulously to be arranged, between radiating element.It is best that the secondary lobe of the array antenna of this design, cross polarization and antenna efficiency can reach.
Therefore the network of two polarization can make its geometrical length substantially suitable by compensation, and when two polarization constant amplitude feeds, during 90 ° of phase phasic differences, in above-mentioned whole frequency band, Circular polarization ratio is less than 1dB.
Because the waveguide comprise network takes full advantage of the space between unit, make its physical dimension of planar array antenna suitable with the aerial radiation actinal surface, therefore can by shoulder to shoulder or the front and rear panel mode combine this planar array antenna.After controlling mould size and kind, can, by a plurality of antenna plate of combination, obtain the high-gain satellite earth antenna.
Under same shell situation, obtain LNB and the LNA of double-circle polarization or two-wire polarization tracking by changing micro-band plate.Meet the multiple requesting of many plate combinations and serial antenna.
Advantage of the present invention is: the present invention has adopted the rectangular horn that is less than 1 λ, one feedback one of cross feed structure, therefore there is good secondary lobe, cross polarization characteristics, antenna efficiency is higher, geometrical length through the dual polarization comprise network of overcompensation is substantially suitable, and whole antenna has obtained good Circular polarization ratio characteristic in bandwidth.
The accompanying drawing explanation
The structure chart that Fig. 1 is 2 * 2 dual polarized antenna units.
The E-T that Fig. 2 is the level Four coupling.
The stationary wave characteristic that Fig. 3 is above-mentioned E-T.
The front elevation that Fig. 4 is 16 * 4 cell array antennas.
The reverse side figure that Fig. 5 is 16 * 4 cell array antennas.
The front elevation that Fig. 6 is 16 * unit 8 array antenna.
Fig. 7 is the stationary wave characteristic in 16 * unit 8 frequency band.
Fig. 8 is the Circular polarization ratio characteristic in 16 * unit 8 frequency band.
Fig. 9 is the gain characteristic in 16 * unit 8 frequency band.
The directional diagram that Figure 10 is 16 * unit 8 10.9GHz.
The directional diagram that Figure 11 is 16 * unit 8 11.2GHz.
The directional diagram that Figure 12 is 16 * unit 8 11.7GHz.
The directional diagram that Figure 13 is 16 * unit 8 12.2GHz.
The directional diagram that Figure 14 is 16 * unit 8 12.7GHz.
Embodiment
As shown in Figure 1, a kind of dual polarization planar array satellite television receiving antenna, include dual polarized antenna and dual polarization tuner, described dual polarized antenna includes radiating element, two rectangular waveguide feed mouths 2 that cross is arranged, polarization feeding network 1 and polarization feeding network 24, described radiating element is rectangular radiation loudspeaker 1, described rectangular waveguide feed mouth 2 is given radiating element dual polarization feed, described polarization feeding network 1 is mutually vertical with the polarised direction of polarization feeding network 24, polarization feeding network 1 and 24 is all synthetic with E-T structure, polarization feeding network one 3 and 24 lays respectively at, be combined into 2 * 2 cell array antennas in lower two planes and by radiating element, described polarization feeding network 1 and 24 is between radiating element, polarization feeding network 1 and 24 decline curve the back side at 2 * 2 cell array antennas, by compensation, make polarization feeding network one and two geometrical lengths equate, polarization feeding network 1 and 24 delivery outlet are all at the back side of 2 * 2 cell array antennas, two delivery outlets are corresponding with two input ports of described dual polarization tuner, and by microstrip line, connect respectively.
Spacing between described polarization feeding network 1 and 24 is 2mm.
The length of side of described radiating element rectangular radiation loudspeaker 1 is less than 1 λ.
Become 16 * 4 cell array antennas and 16 * unit 8 array antenna by copying with minute E-T textural association such as broadband of 2 * 2 cell array antennas, the synthetic E-T between unit adopts the level Four coupling, can guarantee that antenna has wider bandwidth.Bandwidth covers 10.95GHz-12.75GHz, can meet the requirement of watching of satellite television all over the world.
As shown in Figure 1.This is the tomograph of Unit 2 * 2, wherein 1 represents the radiation loudspeaker, and 2 represent cross double square waveguide feed mouth, for giving the dual-polarized feed of loudspeaker.3 represent the feeding network of one of them polarization, and polarised direction is parallel with the x axle, and 4 represent the feeding network of another one polarization, and polarised direction is parallel with the y axle.Two polarization separate from height, midfeather 2mm.Two polarization networks all be take the E-T two-in-one structure as basis, can find out because two polarization networks of integrated arrangement, whole space is compact, unit interval is crossed the young pathbreaker can't obtain superperformance, can bring graing lobe and larger cross polarization but unit interval surpasses 1 λ, reduce the efficiency of antenna.Considers that vehicle-mounted planar array antenna is restricted to vertical height, need reduce the height of mobile receiver aerial as far as possible, so spacing is selected the 23mm(horizontal direction) and the 22mm(vertical direction), the bore of single loudspeaker radiation unit is 19mm * 17.4mm.The broadside of synthetic waveguide is of a size of 17.2mm.Two-layer waveguide network adds that loudspeaker radiation unit gross thickness is 47.4mm.
Can combine above-mentioned Unit 2 * 2 by variety of way, we have combined 16 * 4 cell arrays, also has 16 * unit 8 array.These combination arrays are because the both direction unit number is all several powers of 2, therefore only need the E-T structure of decile, and, in order to expand bandwidth, it is necessary adopting many step coupling E-T structures, in Fig. 2,5 represent 4 step E-T structures, can obtain good bandwidth characteristic.Total standing wave of the combination of a plurality of like this E-T is just in tolerance interval.Fig. 3 is the stationary wave characteristic of E-T in frequency band of 4 step couplings, at our the bandwidth standing internal wave of demand, is less than 1.1.Also other compound mode can be arranged, for example 8 * 6, even 6 * 6 cellular arraies also can.Just need not decile E-T structure, equally can be by many step combination Bandwidths.
As shown in Fig. 4 ~ Fig. 6.Can add by copying of Unit 2 * 2 minute E-T acquisition 16 * 4 and 16 * unit 8 aerial arrays such as broadband.Wherein 6 is comprise networks of a kind of polarization, 3 and E-T structure 5 in Unit 2 * 2 adds that main transmission waveguide (17.2mm * 4.1mm) forms, because the vertical cell number is less, before left and right two parts are synthetic, also need one E-90 ° curved, afterwards this layer network also need one H-90 ° curved, make the back side of waveguide delivery outlet towards antenna.When 7---another one polarization comprise network is in the end also curved after same direction by one H-90 °, and two waveguide mouths will be in one plane, at a distance of nearer, conveniently with the dual polarization tuner, is connected.8 is exactly the delivery outlet of the comprise network 6 of x polarization, the delivery outlet of the comprise network 7 of the 9th, y polarization.
10 is comprise networks of 16 * unit 8 array y polarization, the 12nd, and its delivery outlet; 11 is comprise networks of 16 * unit 8 array x polarization, the 13rd, and its delivery outlet.Can find out when unit number is 16 * 8, network 11 in the end one-level E-T is all straight main transmission waveguide before, network 10 is many one E-90 ° curved, therefore for the length of compensating network 11, make itself and network 10 substantially suitable on physical dimension, in the end compensated one section waveguide length.Two output port 12 and 13 caliber size and spacing be 9 and 8 consistent with 16 * 4 cell arrays all.The overall dimension of last 16 * unit 8 array is: 367mm * 174.4mm * 50.9mm.The increase of thickness aspect is because therefore one section transition straight wave guide of last H-90 of lower floor's network ° of curved needs has increased a small stair in the part that connects tuner.
Two delivery outlets are of a size of 17.2mm * 4.1mm, both at a distance of the 27.32mm(centre symmetry line to centre symmetry line).Tuner has two input ports of same size, corresponding with the antenna delivery outlet.By microstrip coupled, finally in tuner, synthesized, polarization conversion and polarization tracking, the tuner dual output, the layout of down-conversion can according to circumstances be determined.Tuner is of a size of 100mm * 55mm * 15mm.
Can carry out many plates Combination Design on 16 * unit 8 array basis, can adopt the front and rear panel mode shoulder to shoulder, also can both use, realize the combination of 4 plate aerials.First LNA(and tuner structure consistent size) amplify, transfer to the right and left (dual polarization one on a left side, on the right side) with cable, then combine respectively and synthesize.The front and rear panel mixer need to consider to compensate the path length difference of front and rear panel, will consider especially to carry out elevation angle machinery while sweeping when two plates, and the variation of path length difference, only have actual compensation path length difference, guarantee synthetic validity in whole bandwidth.The design of front and rear panel can reduce the height of mobile-satellite television antenna, by the SR1000 of Raysat, is adopted the earliest.But header board may block rear plate, the excessive compound direction figure that affects again the high elevation angle of front and rear panel spacing, the compensation of path length difference has also increased difficulty, so the selection of the spacing of front and rear panel need to consider.The front and rear panel level interval 348.8mm(30 degree elevation angle is unobstructed) time, when the emulation elevation angle 20 is spent, gain is about 36.48dB, and when at this moment the elevation angle 70 is spent, secondary lobe is higher.During spacing 320mm, 20 degree elevation angle simulated gain 36dB, during spacing 300mm, 20 degree elevation angle simulated gain 35.8dB, gain and the secondary lobe at two kinds of situation 70 degree elevations angle all are improved.As can be seen from the above analysis, (two shoulder to shoulder in four plate combinations, the two plates combinations in front and back) can realize higher gain in the situation that the portable antenna height is no more than 20cm, roughly be equivalent to the gain of the offset-fed reflecting surface of diameter 60cm, can only have for satellite EIRP the situation of 43-44dBW, receive satellite television.This watches that the good-looking program on relatively remote satellite brings possibility to some areas.
Fig. 7 ~ Figure 14 has provided the standing wave of 16 * unit 8, Circular polarization ratio, the directional diagram of gain characteristic and five frequencies.
Claims (4)
1. a dual polarization planar array satellite television receiving antenna, it is characterized in that: include dual polarized antenna and dual polarization tuner, described dual polarized antenna includes radiating element, two rectangular waveguide feed mouths that cross is arranged, polarization feeding network one and polarization feeding network two, described radiating element is the rectangular radiation loudspeaker, described rectangular waveguide feed mouth is to radiating element dual polarization feed, described polarization feeding network one is mutually vertical with the polarised direction of polarization feeding network two, polarization feeding network one and two is all synthetic with E-T structure, polarization feeding network one and two lays respectively at, be combined into 2 * 2 cell array antennas in lower two planes and by radiating element, described polarization feeding network one and two is between radiating element, polarization feeding network one and two decline curve the back side at 2 * 2 cell array antennas, by compensation, make polarization feeding network one and two geometrical lengths equate, polarization feeding network one and two delivery outlet are all at the back side of 2 * 2 cell array antennas, two delivery outlets are corresponding with two input ports of described dual polarization tuner, and by microstrip line, connect respectively.
2. dual polarization planar array satellite television receiving antenna according to claim 1, it is characterized in that: the spacing between described polarization feeding network one and two is 2mm.
3. dual polarization planar array satellite television receiving antenna according to claim 1, it is characterized in that: the length of side of described radiating element rectangular radiation loudspeaker is less than 1 λ.
4. dual polarization planar array satellite television receiving antenna according to claim 1 is characterized in that: by copying with minute E-T textural association such as broadband of 2 * 2 cell array antennas, become 16 * 4 cell array antennas and 16 * unit 8 array antenna.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106207439A (en) * | 2016-09-08 | 2016-12-07 | 中国电子科技集团公司第五十四研究所 | A kind of dual circularly polarized antenna unit and array antenna |
| CN108183318A (en) * | 2017-12-28 | 2018-06-19 | 航天恒星空间技术应用有限公司 | A kind of compact double-circle polarization waveguide array antenna and its feed method |
| CN110337758A (en) * | 2016-12-02 | 2019-10-15 | 凯瑟琳欧洲股份公司 | Dual polarization horn radiator |
| WO2022105166A1 (en) * | 2020-11-17 | 2022-05-27 | 广东纳睿雷达科技股份有限公司 | Dual-polarization array antenna |
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| CN101083359A (en) * | 2007-07-10 | 2007-12-05 | 中国电子科技集团公司第五十四研究所 | Process for manufacturing high gain dual-linear polarization or dual-circle polarization waveguide array antennas |
| CN102064380A (en) * | 2010-10-26 | 2011-05-18 | 李峰 | Waveguide flat array antenna |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101083359A (en) * | 2007-07-10 | 2007-12-05 | 中国电子科技集团公司第五十四研究所 | Process for manufacturing high gain dual-linear polarization or dual-circle polarization waveguide array antennas |
| CN102064380A (en) * | 2010-10-26 | 2011-05-18 | 李峰 | Waveguide flat array antenna |
Non-Patent Citations (1)
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| 宋长宏等: "C 波段双极化低旁瓣阵列天线", 《微波学报》, 31 August 2012 (2012-08-31), pages 35 - 38 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207439A (en) * | 2016-09-08 | 2016-12-07 | 中国电子科技集团公司第五十四研究所 | A kind of dual circularly polarized antenna unit and array antenna |
| CN106207439B (en) * | 2016-09-08 | 2023-03-24 | 中国电子科技集团公司第五十四研究所 | Double-circular-polarization antenna unit and array antenna |
| CN110337758A (en) * | 2016-12-02 | 2019-10-15 | 凯瑟琳欧洲股份公司 | Dual polarization horn radiator |
| US11196178B2 (en) | 2016-12-02 | 2021-12-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Dual-polarized horn radiator |
| CN108183318A (en) * | 2017-12-28 | 2018-06-19 | 航天恒星空间技术应用有限公司 | A kind of compact double-circle polarization waveguide array antenna and its feed method |
| WO2022105166A1 (en) * | 2020-11-17 | 2022-05-27 | 广东纳睿雷达科技股份有限公司 | Dual-polarization array antenna |
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