Array antenna and communication device

Abstract

The application discloses an array antenna and a communication device, which comprise a phase shifter and at least one broadband radiation array, the broadband radiation array comprising a main radiation column, a sub-radiation column arranged on one side of the main radiation column in a second direction and comprising at least one borrowed column unit, and a transmission line group, the main radiation column comprising a plurality of column units arranged along a first direction, the transmission line group comprising a main feeder connected with the phase shifter, a first sub-feeder connected between the main radiation column and the main feeder, and a second sub-feeder connected between the sub-radiation column and the main feeder, and a phase difference between the column units and the borrowed column unit is greater than 0° and less than 360°. According to the array antenna, the array antenna can be flexibly set according to requirements, the convergence width capability of the array antenna at different frequency bands can be realized to be different, the convergence width of the low-frequency working frequency band can be greatly converged, the convergence requirement of the convergence width of the high-frequency working frequency band is reduced, the convergence width of the array antenna can meet preset requirements, and the overall gain of the array antenna is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to an array antenna and a communication device. BACKGROUND

[0002] In the design of high-low frequency array, due to the influence of factors such as the width of the reflector plate, the aperture of the oscillator and the working frequency, the wave width often needs to be converged, and when the frequency band is wide, sometimes the wave width of the low frequency band is wider than that of the high frequency band, and we only need to converge the wave width of the low frequency band without affecting the wave width of the high frequency band.

[0003] Common methods for converging wave width include using a bridge to converge wave width, using a slope power division bridge to converge wave width, and using an L-shaped cross feed to converge wave width. These methods for converging wave width usually make the overall wave width converge, and cause beam deformation and gain reduction, which cannot meet the requirement of converging the wave width of the low frequency band (such as 1710-1880MHz) without affecting the wave width of the high frequency band (such as 2500-2690MHz). SUMMARY

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide an array antenna, which can adjust the phase difference between the first sub-feed line and the second sub-feed line by adjusting the length difference between the first sub-feed line and the second sub-feed line, and can be flexibly set according to requirements, so as to realize different convergence wave width capabilities of the wideband radiation array at different frequency bands, realize a large convergence of the wave width of the low frequency working frequency band while reducing the convergence amount of the wave width of the high frequency working frequency band, so that the wave width of the array antenna working frequency band can meet the preset requirements, and the overall gain of the array antenna is better.

[0005] The present application also provides a communication device with the above array antenna.

[0006] According to the array antenna of the first aspect of the present application, the array antenna comprises a phase shifter, at least one wideband radiation array, a main radiation column, a sub-radiation column and a transmission line group, the main radiation column comprises a plurality of column units arranged in a first direction, the sub-radiation column is arranged on one side of the main radiation column in a second direction and comprises at least one borrowed column unit, the transmission line group comprises a main feed line, a first sub-feed line and a second sub-feed line, both ends of the main feed line are respectively an input end and an output end, the input end is connected with the phase shifter, the first sub-feed line is connected between the main radiation column and the output end, and the second sub-feed line is connected between the sub-radiation column and the output end, wherein the phase difference between the column unit and the borrowed column unit is greater than 0° and less than 360°, and the first direction is perpendicular to the second direction.

[0007] According to the array antenna, by connecting the main radiation column and the auxiliary radiation column arranged side by side through the transmission line group, the wave width of the wideband radiation array can be converged when the wideband radiation array works in a low-frequency working frequency band, by setting the phase difference between the current column unit and the borrowed column unit to be greater than 0° and less than 360°, the phase difference between the current column unit and the borrowed column unit can be adjusted by adjusting the length difference between the first sub-feed line and the second sub-feed line, the wideband radiation array can be flexibly set according to requirements, the convergence of the wave width of the wideband radiation array in different frequency bands is different, the wave width of the low-frequency working frequency band is greatly converged, and the convergence requirement of the wave width of the high-frequency working frequency band is reduced, so that the wave width of the working frequency band of the array antenna can meet the preset requirements, the overall gain of the wideband radiation array is better, and the overall performance of the array antenna is improved.

[0008] According to some embodiments of the application, the entire working frequency band of the wideband radiation array can be divided into a plurality of sub-frequency bands, the plurality of sub-frequency bands include a first working frequency band and a second working frequency band, the first working frequency band is higher than the second working frequency band, and the phase difference between the current column unit and the borrowed column unit at the second working frequency band is greater than 0° and less than 360°; when the wideband radiation array works in the first working frequency band, the phase difference between the current column unit and the borrowed column unit at the first working frequency band is greater than or equal to 160° and less than or equal to 180°.

[0009] According to some embodiments of the application, the phase difference between the current column unit and the borrowed column unit at the first working frequency band is 180°.

[0010] According to some embodiments of the application, the borrowed column unit and the current column unit are arranged one by one in the second direction.

[0011] According to some embodiments of the application, the distance between two adjacent current column units in the first direction is a first distance, the first distance is greater than the length of the projection of the current column unit on the projection plane in the first direction, the normal of the projection plane is perpendicular to the first direction, and the normal of the projection plane is perpendicular to the second direction.

[0012] According to some optional embodiments of the application, the array antenna further comprises a power divider, the power divider has an input port, a first output port and a second output port, the main feed line is connected between the input port and the phase shifter, the first sub-feed line is connected to the first output port, the second sub-feed line is connected to the second output port, and the power divider is used for power distribution of the main radiation column and the auxiliary radiation column.

[0013] According to some optional embodiments of the present application, the wideband radiation arrays are multiple, the multiple wideband radiation arrays are arranged along the second direction, and two adjacent wideband radiation arrays are a first radiation array and a second radiation array respectively, the main radiation column of the first radiation array is arranged in the same column as the auxiliary radiation column of the second radiation array, and the auxiliary radiation column of the first radiation array is arranged in the same column as the main radiation column of the second radiation array.

[0014] In some optional embodiments of the present application, the main column units of the first radiation array and the main column units of the second radiation array are staggered in the second direction.

[0015] In some optional embodiments of the present application, the interval of two adjacent main column units in the first direction is a first interval, the interval of the main radiation column of the first radiation array and the auxiliary radiation column of the second radiation array in the first direction is a second interval, and the second interval is greater than or equal to the first interval.

[0016] According to the communication device of the second aspect of the embodiments of the present application, the array antenna of the first aspect of the embodiments of the present application is included.

[0017] According to the communication device of the present application, the array antenna can make the bandwidth of the array antenna in the working frequency band meet the preset requirements, make the overall gain of the array antenna better, and improve the overall performance of the communication device.

[0018] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0020] Figure 1 is a front view of an array antenna according to some embodiments of the present application;

[0021] Figure 2 is Figure 1 is a feeding network topology diagram of the array antenna in

[0022] Figure 3 is Figure 1 is a unit radiation surface current diagram of a main column unit and a borrowed column unit in the array antenna in

[0023] Figure 4 is a horizontal bandwidth comparison curve diagram of three kinds of radiation arrays;

[0024] Figure 5 is a gain versus contrast curve of the three radiation arrays;

[0025] Figure 6 is a horizontal pattern waveform of the radiation array with only the main radiation column;

[0026] Figure 7 is a horizontal pattern waveform of the wideband radiation array in Figure 1 .

[0027] Reference signs:

[0028] 100, array antenna;

[0029] 1, phase shifter; 11, output interface;

[0030] 2, wideband radiation array; 21, main radiation column; 211, column unit; 22, auxiliary radiation column; 221, borrowed column unit; 23, transmission line group; 231, main feeder; 232, first sub-feeder; 233, second sub-feeder;

[0031] 3, power divider; 31, input port; 32, first output port; 33, second output port. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0033] In the design of high-low frequency arrays, due to the influence of factors such as the width of the reflecting plate, the aperture of the oscillator, and the working frequency, the wave width often needs to be converged, and sometimes the wave width at the low frequency end is wider than the high frequency end, and the wave width at the high frequency end is within the required range. We only need to converge the wave width at the low frequency end without affecting the wave width at the high frequency end.

[0034] Existing related implementation schemes:

[0035] 1. Using bridge borrowed column to converge wave width: there are two types of existing bridges, one is a fixed power ratio bridge, such as a column and a borrowed column power ratio of 2:1, two column arrays pass through the bridge each borrowed column 1 oscillator, the borrowed column phase is usually 90°, adjust the power ratio of the column and the borrowed column, achieve the effect of converging wave width; however, using fixed power ratio bridge borrowed column to converge wave width, the overall wave width will be converged, and the horizontal pattern will be deformed.

[0036] The second type is a slope power distribution bridge (for example, Jia Feifei, Liu Peitao, Xue Quan. A design method of a small-sized double-low-frequency 4T4R base station antenna array [J]. Journal of Nanjing University of Information Engineering (Natural Science Edition), 2019, 11 (1): 30-34). The slope power distribution bridge is an unequal power distribution bridge with a power distribution ratio changing with frequency. The bridge has different power responses at different frequency points, so that the convergence effects of the wave width at different frequency bands are different, and the convergence of the wave width in the entire working frequency band is realized. The use of the slope power distribution bridge to converge the wave width also makes the overall wave width converge, but the convergence degrees of different frequency bands are different, the wave width of a certain frequency band cannot be completely unaffected, and the horizontal pattern will also be deformed.

[0037] 2. L-type cross-feeding convergence wave width: the last element of each column is connected to the phase shifter of the opposite column to form L-type cross-feeding, which can make the overall wave width converge. However, the L-type cross-feeding convergence wave width also makes the overall wave width converge, but the convergence degrees of different frequency bands are different, the wave width of a certain frequency band cannot be completely unaffected, and there are adverse effects such as gain reduction.

[0038] The above three methods cannot meet the requirement that only the wave width of the low-frequency band (such as 1710-1880 MHz) converges without affecting the wave width of the high-frequency band (such as 2500-2690).

[0039] To solve the above technical problems, the array antenna 100 is provided.

[0040] Reference Figures 1-7 According to the array antenna 100 of the first aspect of the present application, the array antenna 100 comprises a phase shifter 1 and at least one wide-frequency radiation array 2. For example, the wide-frequency radiation array 2 can be one, two, three, four or more. For example, one phase shifter 1 is connected to one wide-frequency radiation array 2, and the phase shifter 1 can have a plurality of output interfaces 11, each output interface 11 being connected to a radiation element of one wide-frequency radiation array 2 or a radiation element of two wide-frequency radiation arrays 2.

[0041] It should be explained that, in the present application, the wide-frequency radiation array 2 refers to that the working frequency band of the radiation array can be divided into a plurality of sub-frequency bands.

[0042] Each wide-frequency radiation array 2 comprises a main radiation column 21, a sub-radiation column 22 and a transmission line group 23. The main radiation column 21 comprises a plurality of column elements 211 arranged along a first direction (for example, the e1 direction in the drawings). For example, the column elements 211 can be four, five, six, eight, ten, twelve or more. For example, in actual use of the array antenna 100, the first direction can be the vertical direction.

[0043] It should be explained that, in the present application, multiple means two or more than two.

[0044] The sub-radiation column 22 is arranged on one side of the main-radiation column 21 in the second direction (referring to the e2 direction in the drawing), and the sub-radiation column 22 includes at least one borrowed column unit 221. For example, the borrowed column unit 221 can have the same structure as the current column unit 211. For example, the borrowed column unit 221 can be one, two, three or more, and when the borrowed column unit 221 is multiple, the multiple borrowed column units 221 can be arranged at intervals along the first direction. For example, in actual use of the array antenna 100, the second direction can be the horizontal direction.

[0045] The transmission line group 23 includes a main feed line 231, a first sub-feed line 232 and a second sub-feed line 233. The two ends of the main feed line 231 are respectively an input end and an output end, the input end is connected with the phase shifter 1, and the first sub-feed line 232 is connected between the main-radiation column 21 and the output end. For example, the first sub-feed line 232 can be a coaxial line, a microstrip line or a strip line. The second sub-feed line 233 is connected between the sub-radiation column 22 and the output end. For example, the second sub-feed line 233 can be a coaxial line, a microstrip line or a strip line. Among them, the phase difference between the current column unit 211 and the borrowed column unit 221 is greater than 0° and less than 360°, and the first direction is perpendicular to the second direction. For example, the phase difference between the current column unit 211 and the borrowed column unit 221 can be 1°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, 190°, 200°, 210°, 220°, 230°, 240°, 250°, 260°, 270°, 280°, 290°, 300°, 310°, 320°, 330°, 340°, 350°, 359°.

[0046] It should be understood that the phase of the current column unit 211 and the phase of the borrowed column unit 221 are both sinusoidal changes, and the phase change period of the current column unit 211 and the borrowed column unit 221 is 360°, so when the phase difference between the current column unit 211 and the borrowed column unit 221 is greater than 360°, the phase difference can be equivalent to the phase difference after the corresponding period is subtracted. In 0°-360°. For example, when the phase difference between the current column unit 211 and the borrowed column unit 221 is 500°, the phase difference 500° can be equivalent to 140°; when the phase difference between the current column unit 211 and the borrowed column unit 221 is 800°, the phase difference 800° can be equivalent to 80°.

[0047] By setting the transmission line group 23 to connect the main radiation column 21 and the auxiliary radiation column 22 arranged side by side, and setting the phase difference between the main column unit 211 and the borrowed column unit 221 to be greater than 0° and less than 360°, the main radiation column 21 and the auxiliary radiation column 22 interact, and the wave width of the wideband radiation array 2 can be converged.

[0048] By setting the phase difference between the main column unit 211 and the borrowed column unit 221 to be greater than 0° and less than 360°, when the wideband radiation array 2 is working, the electromagnetic radiation emitted outward by the borrowed column unit 221 and the electromagnetic radiation emitted outward by the main column unit 211 can produce a certain amount of mutual cancellation in the horizontal direction, reducing the influence of the auxiliary radiation column 22 on the main radiation column 21 in this frequency band, so that the wave width of the wideband radiation array 2 in this frequency band is converged smaller or even the wave width of the wideband radiation array 2 in this frequency band does not change, realizing the different convergence wave width capabilities of the wideband radiation array 2 in different frequency bands.

[0049] Because when the phase difference between the main column unit 211 and the borrowed column unit 221 is 180°, the main column unit 211 and the borrowed column unit 221 generate opposite currents, and the electromagnetic radiation emitted outward by the borrowed column unit 221 can all participate in the cancellation of the electromagnetic radiation emitted outward by the main column unit 211, so that the influence of the borrowed column unit 221 on the main column unit 211 is smaller, therefore, when it is needed to converge the wave width of the wideband radiation array 2 in a certain frequency band by a large amplitude, the phase difference between the main column unit 211 and the borrowed column unit 221 in this frequency band can be set to be closer to 0°, that is, closer to 360°; when it is needed to converge the wave width of the wideband radiation array 2 in a certain frequency band by a small amplitude (or even avoid the wave width of the wideband radiation array 2 in a certain frequency band from being converged), the phase difference between the main column unit 211 and the borrowed column unit 221 in this frequency band can be set to be closer to 180°.

[0050] By setting the first sub-feed line 232 and the second sub-feed line 233 to be connected between the main radiation column 21 and the auxiliary radiation column 22 respectively, the phase difference between the main column unit 211 and the borrowed column unit 221 can be set by setting the first sub-feed line 232 and the second sub-feed line 233 with different lengths, wherein the phase corresponding to the length difference between the first sub-feed line 232 and the second sub-feed line 233 is the phase difference between the main column unit 211 and the borrowed column unit 221, which is simple in implementation and ingenious in design.

[0051] When it is required to optimize the horizontal beamwidth of the wideband radiation array 2 at a specific frequency band, the first sub-feed line 232 and the second sub-feed line 233 with different lengths can be selected according to the phases of the home column unit 211 and the borrowed column unit 221 at the specific frequency band, so as to adjust the phase difference between the home column unit 211 and the borrowed column unit 221 to a range in which the beamwidth can converge, narrow the beamwidth at the specific frequency band, reduce or eliminate the influence on the beamwidth at the normal frequency band, and achieve flexible selection and convenient optimization, thereby improving the optimization efficiency and reducing the optimization cost.

[0052] For example, when it is required to greatly narrow the beamwidth at a low-frequency working frequency band and reduce the convergence amount of the beamwidth at a high-frequency working frequency band, the first sub-feed line 232 and the second sub-feed line 233 with different lengths can be selected, so that the wideband radiation array 2 has a stronger convergence ability of the beamwidth at the low-frequency working frequency band and a weaker convergence ability of the beamwidth at the high-frequency working frequency band, thereby meeting the requirement of greatly narrowing the beamwidth at the low-frequency working frequency band and reducing the convergence amount of the beamwidth at the high-frequency working frequency band, making the beamwidth of the wideband radiation array 2 at the entire working frequency band meet the preset requirement, and making the overall gain of the wideband radiation array 2 better, thereby improving the overall performance of the array antenna 100.

[0053] Compared with the L-shaped cross-feed beamwidth convergence scheme, the independent borrowed column unit 221 is arranged in the present application, so that the gain of the wideband radiation array 2 is not lost, and the overall gain of the wideband radiation array 2 is better.

[0054] According to the array antenna 100 of the present application, the transmission line group 23 is arranged to connect the parallelly arranged main radiation column 21 and the auxiliary radiation column 22, and the phase difference between the home column unit 211 and the borrowed column unit 221 is greater than 0° and less than 360°, so that the length difference between the first sub-feed line 232 and the second sub-feed line 233 is adjusted, the phase difference between the home column unit 211 and the borrowed column unit 221 is adjusted, and the convergence ability of the wideband radiation array 2 at different frequency bands is flexibly set according to the requirement, thereby meeting the requirement of greatly narrowing the beamwidth at a low-frequency working frequency band and reducing the convergence amount of the beamwidth at a high-frequency working frequency band, making the beamwidth of the wideband radiation array 2 at the entire working frequency band meet the preset requirement, making the overall gain of the wideband radiation array 2 better, and improving the overall performance of the array antenna 100.

[0055] According to some embodiments of the present application, the entire operating frequency band of the wideband radiation array 2 can be divided into a plurality of sub-frequency bands, the plurality of sub-frequency bands including a first operating frequency band and a second operating frequency band, the first operating frequency band being higher than the second operating frequency band, i.e., the first operating frequency band is a high-frequency operating frequency band, and the second operating frequency band is a low-frequency operating frequency band, the phase difference between the current column unit 211 and the borrowed column unit 221 at the second operating frequency band being greater than 0° and less than 360°; when the wideband radiation array 2 operates at the first operating frequency band, the phase difference between the current column unit 211 and the borrowed column unit 221 at the first operating frequency band is greater than or equal to 160° and less than or equal to 180°. For example, the phase difference between the current column unit 211 and the borrowed column unit 221 at the first operating frequency band can be 160°, 161°, 162°, 163°, 164°, 165°, 166°, 167°, 168°, 169°, 170°, 171°, 172°, 173°, 174°, 175°, 176°, 177°, 178°, 179°, 180°.

[0056] It should be explained that the second operating frequency band refers to the lowest frequency band in the plurality of sub-frequency bands, i.e., the second operating frequency band is always a low-frequency operating frequency band, and the first operating frequency band refers to the highest frequency band in the plurality of sub-frequency bands, i.e., the first operating frequency band is always a high-frequency operating frequency band.

[0057] By setting the phase difference between the current column unit 211 and the borrowed column unit 221 at the high-frequency operating frequency band to be greater than or equal to 160° and less than or equal to 180°, i.e., setting the phase difference between the current column unit 211 and the borrowed column unit 221 at the high-frequency operating frequency band to be close to 180°, the current column unit 211 and the borrowed column unit 221 can generate approximately opposite currents, the electromagnetic radiation emitted outward by the borrowed column unit 221 can participate in canceling the electromagnetic radiation emitted outward by the current column unit 211 in a larger amount, thereby more effectively reducing the influence of the auxiliary radiation column 22 on the main radiation column 21, making the wideband radiation array 2 have a smaller convergence of the wave width at the high-frequency operating frequency band or even making the wave width of the wideband radiation array 2 at the high-frequency operating frequency band not change, and making the wave width of the wideband radiation array 2 at the high-frequency operating frequency band can more reliably meet the preset requirements.

[0058] Referring to Figure 3According to some embodiments of the present application, the phase difference between the home column unit 211 and the borrowed column unit 221 in the first working frequency band is 180°. In this way, the home column unit 211 and the borrowed column unit 221 can always generate opposite currents in the high-frequency working frequency band, so that the electromagnetic radiation emitted by the borrowed column unit 221 can all participate in the cancellation of the electromagnetic radiation emitted by the home column unit 211, thereby more effectively reducing or even eliminating the influence of the secondary radiation column 22 on the primary radiation column 21, so that the wave width of the wide-frequency radiation array 2 in the high-frequency working frequency band converges less or even does not change, that is, it meets the requirement of converging the low-frequency end wave width while not affecting the high-frequency end wave width in the same working frequency band, so that the wave width of the wide-frequency radiation array 2 in the high-frequency working frequency band more reliably meets the preset requirement.

[0059] With reference to Figure 1 and Figure 2 According to some embodiments of the present application, the distance between two adjacent home column units 211 in the first direction is a first distance L1, and the first distance L1 is greater than the length D of the projection of the home column unit 211 on the projection surface in the first direction. The normal of the projection surface is perpendicular to the first direction, and the normal of the projection surface is perpendicular to the second direction, which can reduce the coupling interference between the two adjacent home column units 211 and improve the radiation performance of the wide-frequency radiation array 2.

[0060] With reference to Figure 1 and Figure 2 According to some embodiments of the present application, the borrowed column unit 221 is arranged opposite to the home column unit 211 in the second direction. In this way, the horizontal wave width of the wide-frequency radiation array 2 in the low-frequency working frequency band can be effectively converged, so that the horizontal wave width of the wide-frequency radiation array 2 in the low-frequency working frequency band can be reliably converged within the preset range, and the number of borrowed column units 221 can be reduced, thereby improving the overall performance of the wide-frequency radiation array 2.

[0061] Hereinafter, a wide-frequency radiation array 2 according to an embodiment of the present application will be described with reference to Figures 1-7

[0062] With reference to Figure 1 and Figure 2 ​The entire operating frequency band of the wideband radiation array 2 can be divided into multiple sub-frequency bands, the highest one of the multiple sub-frequency bands including the middle frequency band is a high-frequency operating frequency band, the lowest one of the multiple sub-frequency bands including the middle frequency band is a low-frequency operating frequency band, the high-frequency operating frequency band is 2500-2690 MHz, the low-frequency operating frequency band is 1710-1880 MHz, the multiple sub-frequency bands further include a middle operating frequency band with a frequency band of 1920-2170 MHz, the twelve home columns 211 are provided in the column, the two loan columns 221 are provided in the column, the two radiation units and the two ends of the twelve home columns 211 in the first direction are respectively arranged opposite to each other in the second direction, and the phase difference between the home columns 211 and the loan columns 221 in the high-frequency operating frequency band is 180°.

[0063] With reference to Figure 4 , Figure 4 is a horizontal wave width comparison curve diagram of three radiation arrays, wherein, the case 1 dotted line is the horizontal wave width of the radiation array provided with only the main radiation column 21, the wave width of the radiation array is wide in the 1710-1880 MHz frequency band, and the wave width in the 2500-2690 MHz frequency band is within the required range; the case 2 dot-and-dash line is the horizontal wave width of the wideband radiation array 2 with the same phase of the home columns 211 and the loan columns 221, the overall wave width of the radiation array is narrow, the wave width in the 1710-1880 MHz frequency band meets the requirements, but the wave width in the 2500-2690 MHz frequency band is excessively narrow, and is obviously narrow; the case 3 solid line is the horizontal wave width in the wideband radiation array 2 of the above-mentioned embodiment of the application, wherein, the phase difference between the home columns 211 and the loan columns 221 in the high-frequency operating frequency band is 180°, the wave width of the wideband radiation array 2 of the above-mentioned embodiment of the application in the 1710-1880 MHz frequency band is narrow and meets the requirements, and the wave width in the 2500-2690 MHz frequency band is basically unchanged, so that the wave width in the entire frequency band converges to the required range.

[0064] With reference to Figure 5 , Figure 5is a gain contrast curve of three kinds of radiation arrays, wherein, case1 dotted line is a gain curve of the radiation array provided with only the main radiation column 21, the radiation array is wide in the frequency band of 1710-1880 MHz, and the corresponding gain is low; case2 dot-dash line is a gain curve of the wideband radiation array 2 with the same phase of the self-column unit 211 and the borrowed-column unit 221, the radiation array is narrow in the whole wave width, and the corresponding gain is improved in the whole; case3 solid line is a gain curve of the wideband radiation array 2 in the above embodiment of the application, wherein, the phase difference between the self-column unit 211 and the borrowed-column unit 221 in the high-frequency working frequency band is 180°, the wideband radiation array 2 in the above embodiment of the application is narrow in the wave width of the frequency band of 1710-1880 MHz while the gain is improved, the wave width of the frequency band of 2500-2690 MHz is basically unchanged, and the gain is equivalent to the gain of the radiation array provided with only the main radiation column 21, which indicates that the wave width scheme of the wideband radiation array 2 in the above embodiment of the application will not cause the gain loss.

[0065] With reference to Figure 6 And Figure 7 It can be obviously seen that, compared with the radiation array provided with only the main radiation column 21, the wave width of the wideband radiation array 2 in the above embodiment of the application is narrow, and the directional diagram beam does not change obviously.

[0066] With reference to Figure 2 According to some optional embodiments of the application, the array antenna 100 further comprises: a power divider 3, the power divider 3 has an input port 31, a first output port 32 and a second output port 33, the main feeder 231 is connected between the input port 31 and the phase shifter 1, the first sub-feeder 232 is connected with the first output port 32, and the second sub-feeder 233 is connected with the second output port 33, and the power divider 3 is used for power distribution of the main radiation column 21 and the auxiliary radiation column 22. In this way, the power distribution of the self-column unit 211 and the borrowed-column unit 221 can be flexibly adjusted through the power divider 3, so that the influence of the borrowed-column unit 221 on the self-column unit 211 is adjusted, so that the array antenna 100 can adjust the wave width and the gain of the wideband radiation array 2 in the whole working frequency band through the power distribution and the size of the phase difference, realize the requirement of greatly converging the wave width of the low-frequency working frequency band and reducing the convergence amount of the wave width of the high-frequency working frequency band, so that the wave width of the wideband radiation array 2 in the whole working frequency band meets the preset requirement, so that the overall gain of the wideband radiation array 2 is good, and the overall performance of the array antenna 100 is improved.

[0067] With reference to Figure 1According to some optional embodiments of the present application, the plurality of broadband radiation arrays 2 are arranged along the second direction, for example, the plurality of broadband radiation arrays 2 can be two, four or six. Two adjacent broadband radiation arrays 2 are a first radiation array and a second radiation array, respectively, the main radiation column 21 of the first radiation array is arranged in the same column as the auxiliary radiation column 22 of the second radiation array, and the auxiliary radiation column 22 of the first radiation array is arranged in the same column as the main radiation column 21 of the second radiation array.

[0068] By arranging the main radiation column 21 and the auxiliary radiation column 22 of the two adjacent broadband radiation arrays 2 in the same column, the space not occupied by the auxiliary radiation column 22 in each column can be utilized, so that the overall structure of the two adjacent broadband radiation arrays 2 is more compact, the overall size of the two adjacent broadband radiation arrays 2 in the second direction is smaller, and the size of the array antenna 100 in the second direction is smaller.

[0069] With reference to Figure 1 In some optional embodiments of the present application, the main column units 211 of the first radiation array and the main column units 211 of the second radiation array are staggered in the second direction. This can reduce the coupling interference between the two adjacent main radiation columns 21, effectively guarantee the radiation performance of the two adjacent broadband radiation arrays 2, and guarantee the radiation performance of the array antenna 100. At the same time, this can make the spacing of the two adjacent main radiation columns 21 in the second direction closer, reduce the spacing of the two adjacent main radiation columns 21 in the second direction, and make the size of the array antenna 100 in the second direction smaller.

[0070] With reference to Figure 1 In some optional embodiments of the present application, the spacing of the two adjacent main column units 211 in the first direction is a first spacing L1, the spacing of the main radiation column 21 of the first radiation array and the auxiliary radiation column 22 of the second radiation array in the first direction is a second spacing L2, and the second spacing L2 is greater than or equal to the first spacing L1. This can reduce the coupling interference between the main radiation column 21 of the first radiation array and the auxiliary radiation column 22 of the second radiation array, so that the main radiation column 21 of the first radiation array can work reliably, effectively guarantee the radiation performance of the first radiation array, so that the auxiliary radiation column 22 of the second radiation array can work reliably, effectively guarantee the radiation performance of the second radiation array, thereby improve the reliability of the array antenna 100, and guarantee the radiation performance of the array antenna 100.

[0071] According to the communication device of the second aspect of the embodiments of the present application, the array antenna 100 according to the first aspect of the embodiments of the present application is included. For example, the communication device can be a base station.

[0072] According to the communication device, the array antenna 100 can meet the preset requirement for the beam width of the array antenna 100 in the whole working frequency band, the overall gain of the array antenna 100 is good, and the overall performance of the communication device is improved.

[0073] In the description of the present application, it should be understood that the relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0074] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0075] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0076] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An array antenna, characterized by The application relates to a wideband radiation array, which comprises: a phase shifter; at least one wideband radiation array, each of which comprises a main radiation column, a sub-radiation column and a transmission line group, the main radiation column comprises a plurality of main column units arranged along a first direction, the sub-radiation column is arranged on one side of the main radiation column in a second direction and comprises at least one borrowed column unit, and the transmission line group comprises a main feeder, a first sub-feeder and a second sub-feeder, two ends of the main feeder are respectively an input end and an output end, the input end is connected with the phase shifter, the first sub-feeder is connected between the main radiation column and the output end, and the second sub-feeder is connected between the sub-radiation column and the output end; wherein the first sub-feeder and the second sub-feeder have a line length difference, so that the main column units and the borrowed column units are arranged to have a phase difference, and the phase difference between the main column units and the borrowed column units is greater than 0 DEG and less than 360 DEG, and the first direction is perpendicular to the second direction.

2. The array antenna of claim 1, wherein, The entire working frequency band of the wideband radiation array can be divided into a plurality of sub-frequency bands, the plurality of sub-frequency bands comprise a first working frequency band and a second working frequency band, the first working frequency band is higher than the second working frequency band, when the wideband radiation array works at the second working frequency band, the phase difference between the main column units and the borrowed column units at the second working frequency band is greater than 0 DEG and less than 360 DEG, when the wideband radiation array works at the first working frequency band, the phase difference between the main column units and the borrowed column units at the first working frequency band is greater than or equal to 160 DEG and less than or equal to 180 DEG.

3. The array antenna of claim 2, wherein, When the wideband radiation array works at the first working frequency band, the phase difference between the main column units and the borrowed column units at the first working frequency band is 180 DEG.

4. The array antenna of claim 1, wherein, The borrowed column units and the main column units are arranged one by one in the second direction.

5. The array antenna of claim 1, wherein, The interval of two adjacent main column units in the first direction is a first interval, the first interval is greater than the length of the projection of the main column unit on the first direction on a projection plane, the normal of the projection plane is perpendicular to the first direction, and the normal of the projection plane is perpendicular to the second direction.

6. The array antenna of claim 1, wherein, Further comprising: a power divider, the power divider has an input port, a first output port and a second output port, the main feeder is connected between the input port and the phase shifter, the first sub-feeder is connected with the first output port, and the second sub-feeder is connected with the second output port, and the power divider is used for power distribution of the main radiation column and the sub-radiation column.

7. The array antenna according to any one of claims 1 to 6, characterized in that, The wideband radiation array is multiple, a plurality of wideband radiation arrays are arranged along the second direction, two adjacent wideband radiation arrays in the wideband radiation arrays are respectively a first radiation array and a second radiation array, the main radiation column of the first radiation array is arranged in the same column with the sub-radiation column of the second radiation array, and the sub-radiation column of the first radiation array is arranged in the same column with the main radiation column of the second radiation array.

8. The array antenna of claim 7, wherein, The main column units in the first radiation array and the main column units in the second radiation array are arranged staggeredly in the second direction.

9. The array antenna of claim 7, wherein, A pitch of two adjacent main columns in the first direction is a first pitch, and a pitch of the main radiation column of the first radiation array and the sub-radiation column of the second radiation array in the first direction is a second pitch, the second pitch being greater than or equal to the first pitch.

10. A communication device, comprising: Comprising: The array antenna according to any one of claims 1-9. The array antenna according to any one of claims 1-9.

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