CN103236588A - Multi-polarization antenna system and antenna array with same - Google Patents
Multi-polarization antenna system and antenna array with same Download PDFInfo
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- CN103236588A CN103236588A CN2013101099753A CN201310109975A CN103236588A CN 103236588 A CN103236588 A CN 103236588A CN 2013101099753 A CN2013101099753 A CN 2013101099753A CN 201310109975 A CN201310109975 A CN 201310109975A CN 103236588 A CN103236588 A CN 103236588A
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Abstract
The invention discloses a multi-polarization antenna system and an antenna array with the same. The multi-polarization antenna system comprises a first linear polarization antenna and a second linear polarization antenna which are in polarization orthogonality relation and a polarization converting network. The polarization converting network comprises a first duplexer, a second duplexer and a 3dB 90-degree hybrid bridge. A common port of the first duplexer is connected with the first linear polarization antenna. A first shunt port and a second shunt port of the first duplexer are used for passing first frequency band signals and second frequency band signals respectively. A common port of the second duplexer is connected with the second linear polarization antenna. A first shunt port and a second shunt port of the second duplexer are used for passing first frequency band signals and second frequency band signals respectively. The second shunt port of the first duplexer and the second shunt port of the second duplexer are connected with a first pair-port of the hybrid bridge to allow the hybrid bridge to realize polarization conversion, between linear polarization and circular polarization, of the second frequency band signals between the first pair-port and a second pair-port of the hybrid bridge. The multi-polarization antenna system is capable of realizing polarization conversion, mitigating multi-path fading and eliminating polarization loss.
Description
[technical field]
The present invention relates to a kind of antenna that is applicable to mobile communication system, relate in particular to a kind of multi-polarization antenna system and adopt the aerial array of this system.
[background technology]
So far, moving communicating field adopts the linear polarized antenna of vertical line poliarizing antenna or employing+/-45 degree.In application, the former need dispose two slave antennas at each coverage sector, and needs between two slave antennas to keep at interval more than 10 working frequency range wavelength, and it is big to take up an area of the space, cause installing the tower resource be difficult to bear, so be mainly used in scene such as suburb at present; The latter, because there is the polarization loss of 3dB in theory in the linear polarization of+/-45 degree itself, can only select in descending Tx emission band+linear polarization of 45 degree or the linear polarization of-45 degree, cause great power dissipation, in the epoch of advocating energy-saving and emission-reduction, this defective is demanded urgently improving.
[summary of the invention]
An object of the present invention is to provide a kind of multi-polarization antenna system and adopt the aerial array of this system, so that antenna exists circular polarization and two kinds of polarization of linear polarization simultaneously, with the antagonism multipath fading with reduce power loss.
The present invention is achieved through the following technical solutions:
A kind of multi-polarization antenna system of the present invention, comprise first linear polarized antenna, be second linear polarized antenna and the polarization conversion network that polarization orthogonal concerns with first poliarizing antenna, this polarization conversion network comprises first duplexer and second duplexer and 3dB90 ° of mixed electrical bridge;
The common port of described first duplexer is connected with first linear polarized antenna, and its first fen terminal and second fen terminal are respectively applied to current first frequency band signals and second signal frequently;
The common port of described second duplexer is connected with second linear polarized antenna, and its first fen terminal and second fen terminal are respectively applied to current first frequency band signals and second frequency band signals;
Formed the first pair pole port of linear polarization respectively by first duplexer and second duplexer, first fen terminal separately;
Described first duplexer is connected with first pair of port of described mixed electrical bridge respectively with second duplexer, second fen terminal separately, will from its first pair of port, be converted to from the circularly polarized signal of second pair of port output by second frequency band signals of the linear polarization of feed-in by this mixed electrical bridge, formed the second couple polarization port of circular polarization respectively by described second pair of port.
Further, the working frequency range of described first linear polarized antenna and second linear polarized antenna is also contained other frequency band signals that is different from described first frequency band signals and second frequency band signals.
Preferable, described first frequency band signals and second frequency band signals belong to the different frequency sub-band of same mobile communication system frequency range, and wherein first frequency band signals is the reception frequency range of this system, and second frequency band signals is the transmit frequency band of this system.Perhaps, described first frequency band signals and second frequency band signals belong to the different frequency sub-band of same mobile communication system frequency range, and wherein first frequency band signals is the transmit frequency band of this system, and second frequency band signals is the reception frequency range of this system.
Described first linear polarized antenna or second linear polarized antenna are the radiating curtain of being made up of a plurality of radiating elements.Perhaps, described first linear polarized antenna or second linear polarized antenna are single radiating element.
Concrete, second pair of port of described mixed electrical bridge forms left-hand circular polarization signal and right-handed circular polarization signal respectively, is polarization orthogonal each other.
Further, each one the polarization port that is used for current same frequency band signals in described first pair pole port and the second pair of polarization port is connected with second fen terminal with first fen terminal of the 3rd, the 4th duplexer respectively, forms linear polarization and the circularly polarized signal of mixing with the common port at the 3rd, the 4th duplexer.
Preferable, described first linear polarized antenna and second linear polarized antenna and polarization conversion network are assembled on the same metallic reflection plate jointly.
Optionally, described linear polarized antenna and polarization conversion network can split assembling, adopt transmission line to interconnect common formation multi-polarization antenna system each other.
A kind of multi-polarization antenna array of the present invention, it is arranged side by side by at least two as the described multi-polarization antenna system of last purpose and forms.
Compared with prior art, beneficial effect of the present invention is as follows: the present invention realizes the polarization conversion of signal by the polarization conversion network, make and not only have mutually orthogonal linear polarized antenna in the same antenna system, and have mutually orthogonal left-hand circular polarization and a right-handed circular polarization antenna, thereby, both can resist the mobile communication environment of multipath fading, can eliminate polarization loss by circular polarization again, equivalence has improved energy utilization ratio, has eliminated the waste of power.
[description of drawings]
Fig. 1 shows the principle schematic of multi-polarization antenna system of the present invention;
Fig. 2 shows the principle schematic of the multi-polarization antenna system of the present invention that further expands on the basis of Fig. 1;
Fig. 3 shows the dyadic array that adopts multi-polarization antenna system shown in Figure 2 to form;
Fig. 4 shows the four-element array that adopts multi-polarization antenna system shown in Figure 2 to form.
[embodiment]
Below in conjunction with accompanying drawing, the embodiment of the invention is elaborated.
See also of the present invention a kind of multi-polarization antenna system shown in Figure 1, it is applied to one or more mobile communication system frequency ranges, this antenna system mainly comprises the two large divisions, and first part 10 comprises first linear polarized antenna 11 and second linear polarized antenna 12, and second portion is polarization conversion network 20.
Described first linear polarized antenna 11 and second linear polarized antenna 12, all work in same mobile communication system frequency range, this mobile communication system frequency range comprises the first frequency range A and the second frequency range B signal of totally two frequency sub-band at least, one of the first frequency range A and second frequency range B receive frequency range, and another then is transmit frequency band.Both arrange first linear polarized antenna 11 and second linear polarized antenna 12 in the polarization orthogonal mode, to realize that signal is in the covering in space.Comparatively Guan Yong execution mode is, first linear polarized antenna 11 and second linear polarized antenna 12 both one of them can adopt+45 degree linear polarizations, and another then adopts-45 degree linear polarizations.Habitual selection as other is: one of first linear polarized antenna 11 and second linear polarized antenna 12 can adopt the linear polarization of 0 degree horizontal alignment, and another then adopts the vertical orientated linear polarization of 90 degree.Above-mentioned two kinds of habitual general character of selecting are to satisfy polarize between two linear polarized antennas orthogonal.
Described linear polarized antenna 11 or 12 all is made up of a linearly polarized radiation unit.Perhaps, described linear polarized antenna 11 or 12 all is made up of a plurality of line linearly polarized radiations unit with similar antenna element characteristic.At this moment, arbitrary linear polarized antenna 11 or 12 namely is the aerial array of forming along a plurality of radiating elements that a vertical axis direction is arranged.Described linear polarized antenna 11 and 12 each other near arranging, perhaps, can arrange same position in the horizontal direction, in order to save the occupation space resource in the horizontal direction in the horizontal direction.At this moment, linear polarized antenna 11 and 12 axis in the vertical arrangement direction overlap (Fig. 1 only illustrates a linearly polarized radiation unit for antenna 11 or 12, does not illustrate that a plurality of radiating elements that have a similar characteristic with this linearly polarized radiation unit being spaced the group battle array on the vertical axis direction) each other.
Except the above-mentioned specific mobile communication system frequency range that is constituted by the first frequency range a-signal and the second frequency range B signal, obviously, first linear polarized antenna 11 and second linear polarized antenna 12 can also be used for other mobile communication system frequency band signals that radiation is different from this specific mobile communication system frequency range.
Described polarization conversion network 20, it comprises first duplexer 21, second duplexer 22 and the 3dB90 ° of habitual translator of Chinese that mixed electrical bridge 25(3dB90 ° mixed electrical bridge is English 3dB90degree hybrid couplers, be called for short among the present invention " mixed electrical bridge ", thereby, among the present invention, the description of all relating to " mixed electrical bridge " is all and refers in particular to 3dB90 ° of mixed electrical bridge 25).
As everyone knows, duplexer has common port and two branch terminals, and the effect of duplexer mainly is that the signal that will transmit and receive is separated, and guarantee reception and emission operate as normal simultaneously, and the signal of reception and emission is in different frequency sub-band.The common port 31 of described first duplexer 21 is connected with the signal feed-in port of described first linear polarized antenna 11, and directly its first fen terminal 21a drawn formation one linear polarization port 41, for the described first frequency range a-signal, after it is up from first linear polarized antenna 11, isolate through first duplexer 21, and then directly arrive this linear polarization port 41 through its first fen terminal 21a.Otherwise, according to the principle of antenna receiving-sending reciprocity, be described by the contrary path, also can.Second fen terminal 21b of first duplexer 21 then is connected to described mixed electrical bridge 25 and carries out polarization conversion.In like manner, the common port 32 of described second duplexer 22 is connected with the signal feed-in port of described second linear polarized antenna 12, and directly its first fen terminal 22a drawn and form a linear polarization port 42, for the described second frequency range B signal, after it is up from second linear polarized antenna 12, isolate through second duplexer 22, and then directly arrive this linear polarization port 42 through its first fen terminal 22a, otherwise, according to the principle of antenna receiving-sending reciprocity, be described by the contrary path, also can.Second fen road port 22b of second duplexer 22 then is connected to described mixed electrical bridge 25 and carries out polarization conversion.
Described 3dB90 ° mixed electrical bridge 25, according to its well-known characteristics, it has the port of two pairs of I/O each other, the signal of any one input from the first pair of port 33,34 wherein, the two paths of signals that differs 90 ° in phase place, each output in its second pair of port respectively will be separated into.Therefore, first pair of port 33,34 of this mixed electrical bridge 25 is connected with each second minute road port 21b, a 22b of described first duplexer 21 and second duplexer 22 respectively, thus, the second frequency range B signal of two different linear polarizations closes the road with mixed electric bridge 25, and because the two paths of signals that closes in each port of exporting behind the road differs 90 degree in phase place, finally will form a left-hand circular polarization signal and a right-handed circular polarization signal respectively in second pair of port (43 or 44) of mixed electrical bridge 25, the polarization of this second pair of port is orthogonal.Also namely, this second pair of port drawn directly to form two circular polarization ports 43,44.
Be without loss of generality, illustrate the formation principle of circularly polarized signal with formula, as follows:
The linear polarization signal of antenna 11 arrives the port 33 of mixed electrical bridge 25, is made as E11.E11 is through behind the mixed electrical bridge, and the output in port 43 and 44 is respectively E43(11) and E44(11), have:
Similarly, the linear polarization signal of antenna 12 arrives 34, is made as E12.E12 is through behind the mixed electrical bridge, and the output in port 43 and 44 is respectively E43(12) and E44(12), have:
Because antenna 11 and 12 is sent linear polarization signal E11 and E12 simultaneously here, so, obtain to such an extent that synthetic output is at port 43 and 44:
According to Principle of Antenna, E11 and E12 only are that different and its polarization mode of polarization mode is the linear polarization signal of quadrature each other, and after their adopted the mode of phase difference 90 degree to superpose, the E43 that obtains (Σ) was circular polarization.This circular polarization can be left-hand circular polarization, can be right-handed circular polarization also, depends on the orientation of E11 and two linear polarizations of E12.Be without loss of generality for example: suppose that the linear polarization of E11 occurs in the X-direction of 0 degree, the linear polarization of E12 occurs in the Y direction of 90 degree, can determine that according to principle and above-mentioned formula E43 (Σ) is right-handed circular polarization.Similarly, change a kind of hypothesis, also can obtain left-hand circular polarization.
Similarly, E44 (Σ) also is circular polarization output, and according to principle, if current 43 ports are left-hand circular polarizations, then 44 ports are right-handed circular polarizations, and are orthogonal.Otherwise, as the same.
More than, signal that antenna 11 and 22 sends here is described in 43 and 44 output situation.According to antenna reciprocity theorem, port 43 can FD feed, then be sent to antenna 11 and 12, then can be by the automatically synthetic left-hand circular polarization signal of two orthogonal linear polarizations or a right-handed circular polarization signal in the space.Describing and analyzing is reciprocity and reversible, is omitted herein.In like manner, the signal of port 44 feed-ins also is so, just opposite the or title quadrature of situation of the rotation direction of the circular polarization that obtains in the space and 44 ports.
By above-mentioned announcement as can be known, this antenna system has two circular polarization ports 43,44 that second pair of port of a linear polarization port 41 that first fen terminal of first duplexer 21 draw, mixed electrical bridge 25 drawn, and first fen terminal 22a of second duplexer 22 linear polarization port 42 of drawing, wherein two linear polarization ports 41,42 polarization each other is mutually orthogonal, and two circular polarization ports 43,44 polarization each other is also mutually orthogonal.
Further, see also Fig. 2, on the basis of aforementioned announcement, in order to simplify the interconnect port of antenna system and base station system, strengthen practicality, by increasing by the 3rd duplexer 23, make its first fen terminal 23a and second fen terminal 23b respectively with second pair of port of first fen terminal 21a of described first duplexer 21 and described mixed electrical bridge 25 in one be connected, the first frequency range a-signal of linear polarization and the second frequency range B signal of circular polarization can be mixed into the output of one road signal in the common port 51 of the 3rd duplexer 23.In like manner, by increasing by the 4th duplexer 24, make its first fen terminal 24a and second fen terminal 24b be connected with in second pair of port of first fen terminal 22a of described second duplexer 22 and described mixed electrical bridge 25 another respectively, the first frequency range a-signal of linear polarization and the second frequency range B signal of circular polarization can be mixed into another road signal output in the common port 52 of the 4th duplexer 24.Thus, antenna system of the present invention just is reduced to and has the output that 4 different polarized signals are mixed into two ports (51 and 52).According to principle of reciprocity, also can analyze by driving in the wrong direction to two-way mixed signal (51 and 52) arrives antenna, form 4 different polarization in the space, be omitted herein.
Further, see also Fig. 3 and shown in Figure 4, based on Fig. 2 of the present invention and multi-polarization antenna system that above-mentioned corresponding record was disclosed, be that described first linear polarized antenna 11 and second linear polarized antenna 12 and second portion 50 are that described polarization conversion network 20 is done as a whole with the first 10 in each multi-polarization antenna system, form elementary cell parts, this parts integral body can be installed on the same metallic reflection plate (not shown), also can split, and (consult Fig. 1 to Fig. 4 by transmission line, wherein 31 and 32 are tie points of transmission line) connect into system with 10 and 50, form elementary cell parts.Two described elementary cell parts (consulting Fig. 3), three or four described elementary cell parts (consulting Fig. 4) are arranged in together side by side, each elementary cell parts has the port 51,52 of two mixed polarizations, a kind of novel multi-polarization antenna array further is provided, can be binary, ternary or quaternary even more polynary aerial array, be used for realizing the specific signal coverage effect.
In sum, multi-polarization antenna system of the present invention can be realized polarization conversion, make multiple polarization and be stored in the same antenna system, both can resist the mobile communication environment of multipath fading, can eliminate polarization loss by circular polarization again, equivalence has improved energy utilization ratio, has eliminated the waste of power.
It is pointed out that above embodiment only to be used for explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has been described in detail with reference to above-mentioned the present invention of each embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (11)
1. multi-polarization antenna system is characterized in that it comprises:
First linear polarized antenna (11), be second linear polarized antenna (12) that polarization orthogonal concerns with first poliarizing antenna (11), with polarization conversion network (20), this polarization conversion network (20) comprises first duplexer (21) and second duplexer (22) and 3dB90 ° of mixed electrical bridge (25);
The common port (31) of described first duplexer (21) is connected with first linear polarized antenna (11), its first minute terminal (21a) with second minute terminal (21b) be respectively applied to current first frequency range (A) signal and second frequency range (B) signal;
The common port (32) of described second duplexer (22) is connected with second linear polarized antenna (12), its first minute terminal (22a) with second minute terminal (22b) be respectively applied to current first frequency range (A) signal and second frequency range (B) signal;
(21a 22a) forms the first pair pole port (41,42) of linear polarization respectively by separately first fen terminal of first duplexer (21) and second duplexer (22);
Described first duplexer (21) and second duplexer (22), second fen terminal (21b separately, 22b) respectively with first pair of port (33 of described mixed electrical bridge (25), 34) be connected, with will be from its first pair of port (33 by this mixed electrical bridge, 34) second frequency range (B) signal of the linear polarization of feed-in is converted to from second pair of port (43 in, 44) Shu Chu circularly polarized signal is formed the second couple polarization port (43,44) of circular polarization respectively by described second pair of port.
2. multi-polarization antenna system according to claim 1, it is characterized in that described first linear polarized antenna (11) is also contained other frequency band signals that is different from described first frequency range (A) signal and second frequency range (B) signal with the working frequency range of second linear polarized antenna (12).
3. multi-polarization antenna system according to claim 1, it is characterized in that, described first frequency range (A) signal and second frequency range (B) signal belong to the different frequency sub-band of same mobile communication system frequency range, wherein first frequency range (A) signal is the reception frequency range of this system, and second frequency range (B) signal is the transmit frequency band of this system.
4. multi-polarization antenna system according to claim 1, it is characterized in that, described first frequency range (A) signal and second frequency range (B) signal belong to the different frequency sub-band of same mobile communication system frequency range, wherein first frequency range (A) signal is the transmit frequency band of this system, and second frequency range (B) signal is the reception frequency range of this system.
5. multi-polarization antenna system according to claim 1 is characterized in that, described first linear polarized antenna (11) or second linear polarized antenna (12) are the radiating curtain of being made up of a plurality of radiating elements.
6. multi-polarization antenna system according to claim 1 is characterized in that, described first linear polarized antenna (11) or second linear polarized antenna (12) are single radiating element.
7. multi-polarization antenna system according to claim 1 is characterized in that, second pair of port (43,44) of described mixed electrical bridge (25) forms left-hand circular polarization signal and right-handed circular polarization signal respectively, and polarization orthogonal each other.
8. according to any described multi-polarization antenna system in the claim 1 to 7, it is characterized in that, described first pair pole port (41,42) with second pair of polarization port (43,44) each one the polarization port that is used for current same frequency band signals in respectively with first fen terminal (23a, 24a) of the 3rd, the 4th duplexer (23,24) and second minute terminal (23b, 24b) be connected, to form linear polarization and the circularly polarized signal of mixing at the common port (51,52) of the 3rd, the 4th duplexer (23,24).
9. according to any described multi-polarization antenna system in the claim 1 to 7, it is characterized in that described first linear polarized antenna (11) is assembled on the same metallic reflection plate jointly with second linear polarized antenna (12) and polarization conversion network.
10. according to any described multi-polarization antenna system in the claim 1 to 7, it is characterized in that described linear polarized antenna (11,12) splits assembling with the polarization conversion network, adopts transmission line to interconnect common formation multi-polarization antenna system each other.
11. a multi-polarization antenna array is characterized in that, it is arranged side by side as claim 9 or 10 described multi-polarization antenna systems by at least two and forms.
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| CN104092026A (en) * | 2014-06-30 | 2014-10-08 | 广东欧珀移动通信有限公司 | Antenna transmission device, mobile terminal and antenna design method |
| CN106058435A (en) * | 2016-07-12 | 2016-10-26 | 三维通信股份有限公司 | Wideband circular polarized antenna |
| CN109687171A (en) * | 2018-12-29 | 2019-04-26 | 京信通信技术(广州)有限公司 | Aerial array and antenna |
| CN113629408A (en) * | 2021-08-11 | 2021-11-09 | 维沃移动通信有限公司 | Antenna polarity switching method, antenna module and electronic equipment |
| CN115993581A (en) * | 2023-02-28 | 2023-04-21 | 成都雷电微力科技股份有限公司 | Multi-frequency multi-polarization millimeter wave phased array radar receiving front end |
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Effective date of registration: 20170204 Address after: 510663 Guangzhou, Guangzhou Science City, Shenzhou Road, No. 10, No. Patentee after: Comba Telecom Systems (China) Co., Ltd. Patentee after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Patentee after: Comba Telecom Systems (Guangzhou) Co., Ltd. Patentee after: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. Address before: 510663 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee before: Jingxin Communication Technology (Guangzhou) Co., Ltd. |
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Effective date of registration: 20200120 Address after: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Co-patentee before: Jingxin Communication Technology (Guangzhou) Co., Ltd. Patentee before: Jingxin Communication System (China) Co., Ltd. Co-patentee before: Jingxin Communication System (Guangzhou) Co., Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. |