CN109687171B - Antenna array and antenna - Google Patents
Antenna array and antenna Download PDFInfo
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- CN109687171B CN109687171B CN201811646806.2A CN201811646806A CN109687171B CN 109687171 B CN109687171 B CN 109687171B CN 201811646806 A CN201811646806 A CN 201811646806A CN 109687171 B CN109687171 B CN 109687171B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
Abstract
The invention relates to an antenna and an antenna array. An antenna array comprises a first array element and a first feed network which are used as first working units, a second array element and a second feed network which are used as second working units, and a third array element which is used as a multiplexing unit. The third column element comprises a circulator and at least one third radiation unit; the output end of the circulator is electrically connected with at least one third radiating unit through a feeder line; the first input end of the circulator is electrically connected with the first feed network; the second input end of the circulator is electrically connected with the second feed network. This antenna array can realize the used repeatedly of third radiating element through the circulator to reduce the quantity of radiating element, the cost is reduced, also makes the structural layout of antenna array more succinct, has optimized the size of antenna array, and then has promoted the performance of multifrequency antenna.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to an antenna array and an antenna.
Background
In the field of base station antennas, a multi-frequency multi-port antenna is an important technology for reducing capital investment, saving the space of a sky and saving the load on the top of a tower.
In order to meet the antenna gain and bandwidth criteria, the conventional multi-frequency and multi-port antenna usually adopts an improvement method of increasing the number of radiating elements.
The applicant found in the course of implementing the conventional technique that: by increasing the number of radiating elements to meet the antenna gain and bandwidth criteria, the cost of the antenna is increased.
Disclosure of Invention
Therefore, it is necessary to provide an antenna array and an antenna that can reduce the cost while satisfying the antenna gain and bandwidth index, in order to solve the problem in the conventional technology that the antenna cost is increased by increasing the number of radiating elements to satisfy the antenna gain and bandwidth index.
An antenna array, comprising: a first column element comprising at least one first radiating element; the first feed network is electrically connected with the at least one first radiating unit through a feed line; a second column element comprising at least one second radiating element; the second feed network is electrically connected with the at least one second radiation unit through a feed line; a third column element comprising a first circulator and at least one third radiating element; the output end of the first circulator is electrically connected with the at least one third radiating unit through a feeder line; the first input end of the first circulator is electrically connected with the first feed network; the second input end of the first circulator is electrically connected with the second feed network.
In one embodiment, the antenna array comprises a plurality of the third column elements; in each third row element, the first input end of the first circulator is electrically connected with the first feed network; the second input end of the first circulator is electrically connected with the second feed network.
In one embodiment, the first radiating elements in the first column element, the second radiating elements in the second column element, and the third radiating elements in the third column element are all arranged along a first direction and are respectively located in different rows or columns.
In one embodiment, in the first column element, along the first direction, the distance between two adjacent first radiation units is between 0.9 and 1.0 times of the wavelength corresponding to the central frequency point of the working frequency band of the first column element.
In one embodiment, in the second row element, along the second direction, the distance between two adjacent second radiation units is between 0.9 and 1.0 times of the wavelength corresponding to the central frequency point of the working frequency band of the second row element.
In one embodiment, the third radiating element comprises two pairs of orthogonally polarized dipoles; the output end of the first circulator is electrically connected with any pair of dipoles of the third radiating unit through a feeder line.
In one embodiment, the third radiating element is a ring oscillator or a cross oscillator comprising two pairs of orthogonally polarized dipoles.
In one embodiment, the standing wave of the first circulator is less than or equal to 1.3; the isolation of the first circulator is greater than 28 dB.
An antenna comprising an antenna array as described in any one of the embodiments above.
In one embodiment, the antenna further comprises: a fourth column of cells including at least one fourth radiating element; the fourth feed network is electrically connected with the at least one fourth radiation unit through a feed line; a fifth column element comprising at least one fifth radiating element; the fifth feed network is electrically connected with the at least one fifth radiating unit through a feed line; a first input end of the second circulator is electrically connected with the fourth feed network; a second input end of the second circulator is electrically connected with the fifth feed network; the output end of the second circulator is electrically connected with the other pair of dipoles of the third radiating unit through a feeder line.
In the antenna array, the third radiating element is electrically connected with the first feed network and the second feed network respectively through the first circulator. The circulator has the characteristics of isolating resistance and isolating electric signals. When the antenna array works, if a communication signal is contained in the first feed network, the communication signal enters the first radiation unit for gain amplification, and enters the third radiation unit for gain amplification through the first circulator. If the second feed network has communication signals, the communication signals enter the first radiation unit for gain amplification and enter the third radiation unit for gain amplification through the first circulator. This antenna array can realize the used repeatedly of third radiating element through the circulator to reduce the quantity of radiating element, the cost is reduced, also makes the structural layout of antenna array more succinct, has optimized the size of antenna array, and then has promoted the performance of multifrequency antenna.
Drawings
Fig. 1 is a schematic structural diagram of an antenna array according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an antenna array according to another embodiment of the present application.
FIG. 3 is a schematic representation of the standing wave characteristics of the first circulator in one embodiment of the present application.
FIG. 4 is a schematic illustration of isolation characteristics of a first circulator according to an embodiment of the present application.
Fig. 5 is an original bandwidth pattern of the antenna array in the conventional art.
Fig. 6 is a bandwidth pattern of an antenna array in an embodiment of the present application.
Fig. 7 is a graph of the original gain of the antenna array in the prior art.
Fig. 8 is a gain diagram of an antenna array in an embodiment of the present application.
Fig. 9 is a schematic structural diagram of an antenna according to an embodiment of the present application.
Fig. 10 is a schematic structural diagram of an antenna according to another embodiment of the present application.
Wherein, the meanings represented by the reference numerals of the figures are respectively as follows:
10. an antenna array;
110. a first column element;
112. a first radiation unit;
120. a second column element;
122. a second radiation unit;
130. a third column element;
132. a third radiation unit;
134. a first circulator;
136. a second circulator;
140. a fourth column element;
150. a fifth column element;
210. a first feed network;
220. a second feed network;
240. a fourth feed network;
250. a fifth feed network.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
The present application provides an antenna array 10 comprising a first column element 110 and a first feed network 210 as a first working unit, a second column element 120 and a second feed network 220 as a second working unit, and a third column element 130 as a multiplexing unit.
Specifically, as shown in fig. 1, the first column element 110 is formed by regularly arranging a plurality of first radiation elements 112, where the plurality of first radiation elements refers to one or more integers. In fig. 1, the first column element 110 includes two first radiating elements 112. The first radiating element 112 is a dual-polarized element comprising two pairs of orthogonally polarized dipoles. The first column element 110 should include at least one first radiating element 112.
The first feeding network 210 is electrically connected to each first radiating element 112 in the first column element 110 through a feeding line, so as to input an electrical signal into the first radiating element 112 through the feeding line. When the first feeding network 210 inputs an electrical signal into the first radiating elements 112, the first column element 110 operates, and each first radiating element 112 generates a radiated wave.
The second column element 120 is also formed by a plurality of second radiation elements 122 arranged regularly. Where several also refer to one or more integers. In fig. 1, the second column element 120 includes two second radiation elements 122. The second radiating element 122 is a dual-polarized element comprising two pairs of orthogonally polarized dipoles. The second column element 120 should include at least one second radiating element 122.
The second feeding network 220 is electrically connected to each second radiating element 122 in the second row element 120 through a feeding line, so as to input an electrical signal into the second radiating element 122 through the feeding line. When the second feeding network 220 inputs an electrical signal into the second radiation unit 122, the second column element 120 operates, and each second radiation unit 122 generates a radiation wave.
In order to enhance the gain and bandwidth index of the antenna array 10, the antenna array 10 of the present application further includes: and a third column element 130. The third column 130 includes a first circulator 134 and at least one third radiating element 132.
The first circulator 134 includes a first input terminal P2, a second input terminal P3, and an output terminal P1, which have characteristics of an isolator isolation resistance and an isolation electrical signal. When an electrical signal is input through one of the first input terminal P2 and the second input terminal P3 of the first circulator 134, the electrical signal may be output through the output terminal P1, and the other of the first input terminal P2 and the second input terminal P3 is not affected by the electrical signal.
The third radiating element 132 is a dual-polarized element comprising two pairs of orthogonally polarized dipoles. The third column 130 comprises at least one third radiating element 132. In fig. 1, the third column 130 includes a third radiating element 132. When an electrical signal is inputted into the third column 130, the third radiating element 132 generates a radiation wave.
In the third row element 130, the output end P1 of the first circulator 134 is electrically connected to the third radiating element 132 through a feed line, so as to input an electrical signal into the third radiating element 132. The first input terminal P2 of the first circulator 134 is electrically connected to the first feeding network 210, and the second input terminal P3 is electrically connected to the second feeding network 220. When the antenna array 10 is in operation, if the first feeding network 210 inputs an electrical signal into the first column element 110, the electrical signal is simultaneously input to the third radiating element 132 through the first input end P2 and the output end P1 of the first circulator 134. At this time, the first radiation unit 112 and the third radiation unit 132 operate simultaneously to emit radiation waves. If the second feeding network 220 inputs an electrical signal into the second column element 120, the electrical signal may also be simultaneously input to the third radiating element 132 through the second input terminal P3 and the output terminal P1 of the first circulator 134. At this time, the second radiation unit 122 and the third radiation unit 132 operate simultaneously to emit radiation waves. This antenna array 10 can realize the used repeatedly of third radiating element 132 through the circulator to reduce the quantity of radiating element, the cost is reduced, also makes the structural layout of antenna array 10 more succinct, has optimized the size of antenna array 10, and then has promoted the performance of multifrequency antenna.
In a specific embodiment, the first circulator 134 of the antenna array 10 may be a three-port annular bridge.
In one embodiment, the antenna array 10 includes a plurality of third column elements 130. Several here refers to one or more integers.
When the antenna array 10 includes a third column 130, the structure is shown in fig. 1. The first input end P2 of the first circulator 134 in the third column 130 is electrically connected to the first feeding network 210, the second input end P3 is electrically connected to the second feeding network 220, and the output end P1 is electrically connected to the third radiating element 132.
When the antenna array 10 includes a plurality of third elements 130, each of the third elements 130 includes a first circulator 134 and a plurality of third radiating elements 132 electrically connected to the output end P1 of the first circulator 134. The first input end P2 of the first circulator 134 in each third column 130 is electrically connected to the first feeding network 210, and the second input end P3 of the first circulator 134 in each third column 130 is electrically connected to the second feeding network 220. Plural here means two or more.
The antenna array 10 may include a plurality of third columns 130 for multiplexing, thereby further improving the performance of the antenna array 10.
In one embodiment, as shown in fig. 1 or fig. 2, to satisfy the gain and bandwidth index of the antenna, when the first column element 110 is composed of a plurality of first radiation units 112, the plurality of first radiation units 112 in the first column element 110 are arranged along one direction. For convenience of description of the direction, the arrangement direction of the plurality of first radiation units 112 is named as a first direction. When the second column element 120 is composed of a plurality of second radiation elements 122, the second radiation elements 122 in the second column element 120 are also arranged in the first direction.
Meanwhile, the third radiation elements 132 constituting the third column element 130 are also arranged in the first direction. If the antenna array 10 includes a plurality of third columns 130, all of the third radiating elements 132 in the plurality of third columns 130 may also be arranged along the first direction. The first column element 110, the second column element 120 and the third column element 130 are located in different rows or different columns, in other words, the first column element 110, the second column element 120 and the third column element 130 are not arranged in a column, and the arrangement may be specifically as shown in fig. 1 or fig. 2.
In this embodiment, the first row of cells 110 and the second row of cells 120 are arranged along a second direction, which is perpendicular to the first direction. I.e. the first column element 110 and the second column element 120 are arranged side by side. Third column element 130 is arranged in a first direction relative to first column element 110 and second column element 120. In other words, the entire arrangement of the first radiation element 112 in the first column element 110 and the third radiation element 132 in the third column element 130 is along the first direction; the overall arrangement of second radiating element 122 in second column element 120 and third radiating element 132 in third column element 130 is also along the first direction.
In one embodiment, in the first column element 110, along the first direction, the distance between two adjacent first radiation units 112 is between 0.9 times of wavelength and 1 time of wavelength corresponding to the central frequency point of the operating frequency band of the first column element 110. Specifically, when the first column element 110 is in operation, the electrical signals input into the first column element 110 by the first feeding network 210 generally have a certain frequency range. The middle value of the frequency range is the center frequency point of the working frequency band of the first column element 110. And obtaining the wavelength of the central frequency point according to the frequency of the central frequency point and the relationship between the frequency and the wavelength. Generally, to avoid the horizontal plane beam from being too narrow, the distance between two adjacent first radiation elements 112 in the first column element 110 may be between 0.9 and 1 times the wavelength corresponding to the central frequency point. Specifically, the distance may be 0.9 times of the wavelength corresponding to the center frequency point of the working frequency band of the first column element 110, may also be 1 time of the wavelength corresponding to the center frequency point of the working frequency band of the first column element 110, and may also be 0.95 times of the wavelength corresponding to the center frequency point of the working frequency band of the first column element 110. The arrangement of the distance can improve the coverage of the antenna, thereby meeting the requirement of the coverage of the antenna and improving the performance of the antenna array 10.
Similarly, in the second row element 120, along the first direction, the distance between two adjacent second radiation units 122 is between 0.9 times of wavelength and 1 time of wavelength corresponding to the central frequency point of the operating frequency band of the second row element 120. Specifically, when the second column 120 is in operation, the electrical signals input into the second column 120 by the second feeding network 220 also have a certain frequency range. The middle value of the frequency range is the center frequency point of the working frequency band of the second column element 120. And obtaining the wavelength of the central frequency point according to the frequency of the central frequency point and the relationship between the frequency and the wavelength. Generally, to avoid the horizontal plane beam from being too narrow, the distance between two adjacent second radiation elements 122 in the second column element 120 may be between 0.9 and 1 times the wavelength corresponding to the central frequency point. Specifically, the distance may be 0.9 times of the wavelength corresponding to the central frequency point of the working frequency band of the second column element 120, may also be 1 time of the wavelength corresponding to the central frequency point of the working frequency band of the second column element 120, and may also be 0.95 times of the wavelength corresponding to the central frequency point of the working frequency band of the second column element 120. The arrangement of the distance can improve the coverage of the antenna, thereby meeting the requirement of the coverage of the antenna and improving the performance of the antenna array 10.
It can be understood that, in order to further improve the coverage of the antenna, if allowed, the distances between all the third radiating elements 132 in the third columns 130 and the first radiating element 112 may also satisfy the range between 0.9 times of wavelength and 1 time of wavelength corresponding to the central frequency point of the operating frequency band of the first column 110; the distance between all the third radiating elements 132 in the third columns 130 and the second radiating element 122 can also satisfy the range from 0.9 times of wavelength to 1 time of wavelength corresponding to the central frequency point of the operating frequency band of the second column 120.
The antenna array 10 of the present application is described below in terms of a specific embodiment. As shown in fig. 2, an antenna array 10 is composed of dual-polarized antenna elements, a reflector plate, a feed network, a three-port annular bridge, a structure, and the like.
The dual-polarized antenna element, which is a radiating element, comprises a first radiating element 112 constituting a first column element 110, a second radiating element 122 constituting a second column element 120 and a third radiating element 132 constituting a third column element 130. The first column element 110 includes four first radiation elements 112, and the four first radiation elements 112 are arranged in a column direction. The second column element 120 includes four second radiation units 122, and the four second radiation units 122 are arranged in the column direction. The first column element 110 and the second column element 120 are arranged in a row direction. The third column 130 comprises a three-port annular bridge and a third radiating element 132. The third radiating element 132 is electrically connected to the output terminal P1 of the three-port annular bridge.
The first, second and third columns 110, 120, 130 are arranged on the reflector plate to form the array. The first feed network 210 is electrically connected to a pair of polarized dipoles of all the first radiating elements 112 through a feed line and a connector. Meanwhile, the first feeding network 210 is electrically connected to the first input end P2 of the three-port annular bridge through a feeding line. The second feed network 220 is electrically connected to a pair of polarized dipoles of all the second radiating elements 122 through a feed line and a connector. Meanwhile, the second feeding network 220 is electrically connected to the second input end P3 of the three-port annular bridge through a feeding line. When the first feeding network 210 starts to deliver the electric signal, the electric signal is simultaneously inputted into the four first radiating elements 112 and is inputted into the third radiating element 132 through the three-port annular bridge. When the second feeding network 220 starts to deliver the electric signal, the electric signal is simultaneously inputted into the four second radiating elements 122 and is inputted into the third radiating element 132 through the three-port annular bridge.
In the first column element 110, the distance between the first radiation units 112 is 0.95 times of the wavelength corresponding to the central frequency point of the first feeding network 210. The distance between the second radiation units 122 is 0.93 times of the wavelength corresponding to the central frequency point of the second feeding network 220. The distance between the third radiating element 132 and the closest first radiating element 112 is between 0.9 and 1 times of the wavelength corresponding to the central frequency point of the first feed network 210; the distance between the third radiating element 132 and the nearest second radiating element 122 is also between 0.9 and 1 times of the wavelength corresponding to the central frequency point of the second feeding network 220.
In this embodiment, the three-port annular bridge has a dielectric constant of 4.4, a dielectric thickness of 0.93mm, and a microstrip line thickness of 0.035mm, and the whole perimeter is between 1 and 1.5 times of the wavelength corresponding to the central frequency point of the first feeding network 210 and the wavelength corresponding to the central frequency point of the second feeding network 220. Meanwhile, the microstrip line impedance of the three-port ring bridge is set to 50 Ω. The microstrip line impedance of the first input terminal P2, the second input terminal P3, and the output terminal P1 of the three-port ring bridge is also set to 50 Ω, and the length is set to 0.25 times the operating wavelength. Standing wave and isolation tests were performed on the three-port annular bridge, and the resulting test patterns were shown in fig. 3 and 4. Fig. 3 is a schematic view of the standing wave of the three-port annular bridge, from which it can be seen that the standing wave of the three-port annular bridge is 1.3 or less. Fig. 4 is an isolation diagram of the three-port annular bridge, from which it can be derived that the isolation of the three-port annular bridge is between 28dB and 38 dB. Therefore, the three-port annular bridge meets the requirement of port isolation.
The antenna array 10 without the third column element 130 was subjected to a bandwidth test and the resulting bandwidth pattern is shown in fig. 5. After adding the three-port annular bridge and one third radiating element 132, the antenna array 10 with the third column element 130 is subjected to a wave width test, and the resulting wave width pattern is shown in fig. 6. The different lines in fig. 5 and 6 represent the operating signals at the wavelengths corresponding to the different frequencies. As can be seen from the figure, the wave width of the antenna array 10 is obviously optimized by adding a third radiation element 132 as a multiplex.
The gain test is performed on the antenna array 10 without the third column 130, and the gain effect graph is shown in fig. 7. After adding the three-port annular bridge and one third radiating element 132, the gain test is performed on the antenna array 10 with the third column element 130 added, and the gain effect graph obtained is shown in fig. 8. The different lines in fig. 7 and 8 represent the operating signals at the wavelengths corresponding to the different frequencies. As can be seen from the figure, the gain effect of the antenna array 10 is obviously enhanced by adding one third radiation element 132 as a multiplex.
In another embodiment, the third radiating element 132 of the antenna array 10 may include two pairs of orthogonally polarized dipoles, and the output P1 of the first circulator 134 of the antenna array 10 is electrically connected to only one pair of dipoles of the third radiating element 132. In this embodiment, the third radiating element 132 is a ring-shaped element comprising two pairs of orthogonally polarized dipoles. In other embodiments, the third radiating element 132 may be a cross dipole comprising two pairs of orthogonally polarized dipoles. The ring-shaped oscillator and the cross-shaped oscillator are two kinds of dual-polarized oscillators commonly used in the field, and are not described in detail here.
The present application also provides an antenna comprising the antenna array 10 of any of the above embodiments.
In particular, the antenna comprises the antenna array 10 described above. The antenna array 10 comprises a first column element 110 and a first feed network 210 as a first working unit, a second column element 120 and a second feed network 220 as a second working unit, and a third column element 130 as a multiplexing unit. The first feeding network 210 is electrically connected to the first radiating elements 112 in the first column element 110 through feeding lines. The second feeding network 220 is electrically connected to the second radiating elements 122 in the second row element 120 through feeding lines. The third column 130 includes a first circulator 134 and a third radiating element 132. The output end P1 of the first circulator 134 is electrically connected to the third radiating element 132 through a feed line; the first input end P2 is electrically connected to the first feeding network 210; the second input terminal P3 is electrically connected to the second electrical network.
The antenna comprises the antenna array 10, and the third radiation unit 132 can be reused through the circulator, so that the number of the radiation units is reduced, the cost is reduced, the structural layout of the antenna is simpler, the size of the antenna array 10 is optimized, and the service performance of the multi-frequency antenna is improved.
In an embodiment, in the case that the third radiation element 132 of the antenna array 10 includes two pairs of dipoles with orthogonal polarizations, the antenna may further include: a fourth column 140 and a fourth feeding network 240 as a fourth working unit, a fifth column 150 and a fifth feeding network 250 as a fifth working unit, and a second circulator 136.
Specifically, in the antenna array 10, the first feeding network 210 feeds the first radiation elements 112 through the feeding lines, and simultaneously feeds the pair of dipoles of the third radiation element 132 through the first input end P2 and the output end P1 of the first circulator 134. The second feeding network 220 feeds each of the second radiating elements 122 through a feed line and simultaneously feeds the same pair of dipoles of the third radiating element 132 through the second input terminal P3 and the output terminal P1 of the first circulator 134. At this time, the other pair of dipoles of the third radiation unit 132 is idle.
Based on this, fourth column 140 and fourth feed network 240, fifth column 150 and fifth feed network 250, and second circulator 136 may be added. Wherein the fourth feeding network 240 feeds the fourth column element 140 through the feeding line and simultaneously feeds the other pair of dipoles of the third radiating element 132 through the first input terminal P2 and the output terminal P1 of the second circulator 136. The fifth feeding network 250 feeds the fifth column element 150 through a feed line and simultaneously feeds the other pair of dipoles of the third radiating element 132 through the second input terminal P3 and the output terminal P1 of the other circulator 134.
The parameters of the second circulator 136 may be the same as the parameters 134 of the first circulator, or different circulators may be selected according to different antenna array.
In the antenna, one third radiation unit 132 is simultaneously applied to four groups of working units, so that the third radiation unit 132 is multiplexed for multiple times. Therefore, the number of radiating elements under the same gain requirement is reduced, the cost is reduced, the structural layout of the antenna array 10 is simpler, the size of the antenna array 10 is optimized, and the use performance of the multi-frequency antenna is further improved.
In one embodiment, the third radiating element 132 of the antenna may be a ring-shaped element including two pairs of dipoles with orthogonal polarizations, or a cross-shaped element including two pairs of dipoles with orthogonal polarizations. Fig. 9 shows a case where the third radiation element 132 is a ring-shaped element. Fig. 10 shows a case where the third radiation element 132 is a cross-shaped element.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An antenna array, comprising:
a first column element comprising at least one first radiating element;
the first feed network is electrically connected with the at least one first radiating unit through a feed line;
a second column element comprising at least one second radiating element;
the second feed network is electrically connected with the at least one second radiation unit through a feed line;
a third column element comprising a first circulator and at least one third radiating element; the first circulator is a three-port annular bridge, and the output end of the first circulator is electrically connected with the at least one third radiating unit through a feeder line; the first input end of the first circulator is electrically connected with the first feed network; the second input end of the first circulator is electrically connected with the second feed network, and the first input end of the first circulator is electrically isolated from the second input end of the first circulator.
2. An antenna array according to claim 1, wherein the antenna array comprises a plurality of the third column elements; in each third row element, the first input end of the first circulator is electrically connected with the first feed network; the second input end of the first circulator is electrically connected with the second feed network.
3. An antenna array according to claim 2, wherein the first radiating element in the first column element, the second radiating element in the second column element and the third radiating element in the third column element are all arranged along the first direction and are respectively located in different rows or columns.
4. An antenna array according to claim 3, wherein in the first column element, along the first direction, the distance between two adjacent first radiation units is between 0.9 and 1.0 times of the wavelength corresponding to the central frequency point of the working frequency band of the first column element.
5. An antenna array according to claim 3, wherein in the second row of elements, along the first direction, the distance between two adjacent second radiation units is between 0.9 and 1.0 times of the wavelength corresponding to the central frequency point of the working frequency band of the second row of elements.
6. An antenna array according to any one of claims 1 to 5, wherein the third radiating element comprises two pairs of orthogonally polarised dipoles; the output end of the first circulator is electrically connected with any pair of dipoles of the third radiating unit through a feeder line.
7. An antenna array according to claim 6, wherein the third radiating element is a ring element or a cross element comprising two pairs of orthogonally polarized dipoles.
8. An antenna array according to claim 7, wherein the standing wave of the first circulator is less than or equal to 1.3; the isolation of the first circulator is greater than 28 dB.
9. An antenna comprising at least one antenna array according to any one of claims 1 to 8.
10. The antenna of claim 9, wherein the third radiating element of the antenna array comprises two pairs of orthogonally polarized dipoles; the output end of the first circulator of the antenna array is electrically connected with any pair of dipoles of the third radiation unit through a feeder line, and the antenna further comprises:
a fourth column of cells including at least one fourth radiating element;
the fourth feed network is electrically connected with the at least one fourth radiation unit through a feed line;
a fifth column element comprising at least one fifth radiating element;
the fifth feed network is electrically connected with the at least one fifth radiating unit through a feed line;
a second circulator, a first input end of the second circulator being electrically connected to the fourth feed network; a second input end of the second circulator is electrically connected with the fifth feed network; the output end of the second circulator is electrically connected with the other pair of dipoles of the third radiating unit through a feeder line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646806.2A CN109687171B (en) | 2018-12-29 | 2018-12-29 | Antenna array and antenna |
Applications Claiming Priority (1)
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| CN102694275A (en) * | 2012-05-24 | 2012-09-26 | 华为技术有限公司 | Antenna array and antenna |
| CN103618125A (en) * | 2013-11-20 | 2014-03-05 | 中国电子科技集团公司第四十一研究所 | Broadband high-power low-loss circular power allocation synthesizer |
| CN206461086U (en) * | 2017-01-09 | 2017-09-01 | 罗森伯格技术（昆山）有限公司 | A kind of base station antenna system |
| CN108232450A (en) * | 2018-01-11 | 2018-06-29 | 江苏亨鑫科技有限公司 | A kind of miniature antenna |
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| JP2004104383A (en) * | 2002-09-09 | 2004-04-02 | Kobe Steel Ltd | Antenna device |
| CN101465473B (en) * | 2007-12-20 | 2013-04-10 | 京信通信系统（中国）有限公司 | Multisystem covolume antenna |
| KR101494956B1 (en) * | 2013-02-08 | 2015-02-23 | 주식회사 에이스테크놀로지 | Array antenna optimized for a base station communication system |
| CN103236588B (en) * | 2013-03-29 | 2015-04-15 | 京信通信技术(广州)有限公司 | Multi-polarization antenna system and antenna array with same |
| CN205453686U (en) * | 2015-12-17 | 2016-08-10 | 京信通信技术(广州)有限公司 | Multimode is antenna receiving and dispatching link altogether |
| CN105703053B (en) * | 2016-01-06 | 2018-11-20 | 广东欧珀移动通信有限公司 | A kind of antenna switching method and terminal |
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| CN102694275A (en) * | 2012-05-24 | 2012-09-26 | 华为技术有限公司 | Antenna array and antenna |
| CN103618125A (en) * | 2013-11-20 | 2014-03-05 | 中国电子科技集团公司第四十一研究所 | Broadband high-power low-loss circular power allocation synthesizer |
| CN206461086U (en) * | 2017-01-09 | 2017-09-01 | 罗森伯格技术（昆山）有限公司 | A kind of base station antenna system |
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