CN109301459B - multi-frequency array antenna - Google Patents
multi-frequency array antenna Download PDFInfo
- Publication number
- CN109301459B CN109301459B CN201811267760.3A CN201811267760A CN109301459B CN 109301459 B CN109301459 B CN 109301459B CN 201811267760 A CN201811267760 A CN 201811267760A CN 109301459 B CN109301459 B CN 109301459B
- Authority
- CN
- China
- Prior art keywords
- frequency
- low
- array
- radiating
- frequency radiating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The application provides a multi-frequency array antenna, comprising: the low-frequency array comprises a first low-frequency radiating unit, a second low-frequency radiating unit and a third low-frequency radiating unit which are sequentially arranged from top to bottom along a reference longitudinal axis, the radiating arms of the first low-frequency radiating unit and the radiating arms of the third low-frequency radiating unit are annular, and the radiating arms of the second low-frequency radiating unit are non-annular; the first high-frequency array comprises a first high-frequency branch array formed by at least two first high-frequency radiating units which are arranged on one lateral side of the reference longitudinal axis; the second high-frequency array comprises a second high-frequency branch array formed by at least two second high-frequency radiating elements arranged on the other lateral side of the reference longitudinal axis. The multi-frequency array antenna has a simple and compact array structure, can realize the multiplexing of the space of the radiating units of the high-frequency array parts, can better realize the miniaturization of the multi-frequency antenna, and can also improve the electrical performance of the whole antenna system.
Description
Technical Field
The application relates to the technical field of mobile communication, in particular to a multi-frequency array antenna.
Background
With the rapid development of mobile communication technology and application, the implementation of 2G/3G/4G mobile communication network signal compatibility by adopting a multi-frequency array antenna has become the first choice for network construction in order to integrate antenna feed resources and improve the refinement level of antenna feed coverage.
The applicant of the present application discloses a multi-frequency array antenna in the chinese patent with application number of 201510160763.7, and innovatively proposes a spatial multiplexing technology, namely: the main body arrays and the low-frequency arrays of the high-frequency arrays are arranged on the same axis, and part of array units at one end of each high-frequency array are arranged on two sides of the axis in a mutually opposite mode.
However, the antenna technology has a limited space of high frequency space (for example, a three-frequency array antenna can only be used for multiplexing one space of high frequency space), which is for an antenna array operating in a higher frequency band (for example, 2.6GHz band), in order to ensure better main lobe gain and directivity, since the number of required high frequency radiating elements is large, in practical application, a large number of high frequency radiating elements are still required to be arranged in the upper half or the lower half of the antenna along the axial direction, so that the length of the antenna is greatly increased, and the transmission loss is increased due to the increase of the main feeder line for the high frequency radiating elements arranged in the upper half of the antenna, so that the antenna gain is reduced.
Therefore, the whole size of the existing multi-frequency array antenna is still larger. How to further reduce the size of the multi-frequency array antenna to meet the higher requirement of the 5G era for miniaturization of all non-5G antennas has become a technical problem to be solved in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a multi-frequency array antenna, which realizes the spatial multiplexing of all subarrays in a multi-frequency antenna system and further realizes the miniaturization of the antenna on the premise of ensuring better radiation performance of the antenna.
In order to solve the technical problems, the technical scheme adopted by the multi-frequency array antenna is as follows:
a multi-frequency array antenna comprising:
the low-frequency array comprises a first low-frequency radiation unit, a second low-frequency radiation unit and a third low-frequency radiation unit which are sequentially arranged from top to bottom along the direction of a reference longitudinal axis, the radiation arm of the first low-frequency radiation unit and the radiation arm of the third low-frequency radiation unit are annular, and the radiation arm of the second low-frequency radiation unit is non-annular;
the first high-frequency array comprises a first high-frequency main body array and a first high-frequency branch array which are sequentially arranged from top to bottom, the first high-frequency main body array comprises a plurality of first high-frequency radiating units which are arranged at intervals in the direction of the reference longitudinal axis above the second low-frequency radiating units, and the first high-frequency branch array comprises at least two first high-frequency radiating units which are arranged at one side of the transverse direction of the reference longitudinal axis;
the second high-frequency array comprises a second high-frequency branch array and a second high-frequency main body array which are sequentially arranged from top to bottom, the second high-frequency branch array comprises at least two second high-frequency radiating units which are eccentrically arranged on the other side of the transverse direction of the reference longitudinal axis, and the second high-frequency main body array comprises a plurality of second high-frequency radiating units which are arranged below the second low-frequency radiating units at intervals in the direction of the reference longitudinal axis.
Further, the two polarized radiation arms of the second low-frequency radiation unit are in any one shape of an orthogonal X shape and a cross shape;
alternatively, the radiating arm of the second low-frequency radiating element is in the form ofShape, "[ V-shape ]]"shape>And one of the first high-frequency radiating elements in the first high-frequency branch array and one of the second high-frequency radiating elements in the second high-frequency branch array are included in a setting range of the second low-frequency radiating elements.
Further, at least two second low-frequency radiating elements are provided, and each second low-frequency radiating element is arranged between the first low-frequency radiating element and the third low-frequency radiating element at intervals.
Further, in the plurality of first high-frequency radiating elements of the first high-frequency branch array, the space between two adjacent first high-frequency radiating elements is 0.3-0.5 times of the space between two adjacent second low-frequency radiating elements;
and in the plurality of second high-frequency radiating units of the second high-frequency branch array, the interval between two adjacent second high-frequency radiating units is 0.3-0.5 times of the interval between two adjacent second low-frequency radiating units.
Further, the interval between two adjacent second low-frequency radiation units is 0.5-1.0 times of the wavelength corresponding to the central frequency point of the working frequency range;
among the plurality of first high-frequency radiating units of the first high-frequency branch array, the interval between two adjacent first high-frequency radiating units is 0.5-1.0 times of the wavelength corresponding to the central frequency point of the working frequency range;
and in the plurality of second high-frequency radiating units of the second high-frequency branch array, the interval between two adjacent second high-frequency radiating units is 0.5-1.0 times of the wavelength corresponding to the central frequency point of the working frequency range.
Further, at least one of the low-frequency array, the first high-frequency main body array, the first high-frequency branch array, the second high-frequency main body array and the second high-frequency branch array is distributed in an S shape in the longitudinal direction.
Further, each first high-frequency radiating element of the first high-frequency branch array and each second high-frequency radiating element of the second high-frequency branch array are arranged in a one-to-one symmetry mode.
Further, the first high-frequency radiating unit is embedded in the first low-frequency radiating unit, and the second high-frequency radiating unit is embedded in the third low-frequency radiating unit.
Further, the multi-frequency array antenna comprises a plurality of low-frequency arrays which are arranged at intervals along the transverse direction, at least part of the low-frequency arrays are correspondingly provided with the first high-frequency array and the second high-frequency array, and the transverse distance between every two adjacent low-frequency arrays is 0.5λ -1.1λ.
Further, the working frequency band of the low-frequency array is 694-960 MHz, the working frequency band of the first high-frequency array is 1427-2690 MHz, and the working frequency band of the second high-frequency array is 1427-2690 MHz.
Based on the technical scheme, the multi-frequency array antenna disclosed by the application has the advantages that the first low-frequency radiating unit, the third low-frequency radiating unit and the second low-frequency radiating unit, wherein the radiating arms of the first low-frequency radiating unit and the third low-frequency radiating unit are annular, and the radiating arms of the second low-frequency radiating unit are non-annular, so that the low-frequency array is formed, wherein the first low-frequency radiating unit, the second low-frequency radiating unit and the third low-frequency radiating unit are sequentially arranged from top to bottom along the reference longitudinal axis, and compared with the prior art, the multi-frequency array antenna has at least the following advantages:
1. more first high-frequency radiating units and more second high-frequency radiating units can be respectively distributed on two lateral sides of the second low-frequency radiating unit, so that the multiplexing of the space of a plurality of radiating units is realized, the longitudinal length of the multi-frequency antenna is greatly shortened, and meanwhile, the convergence of half-power wave beam width of the horizontal plane of the directional pattern of the first high-frequency array and the second high-frequency array is better;
2. the space between the second low-frequency radiating element and the first low-frequency radiating element and the space between the second low-frequency radiating element and the third low-frequency radiating element can be relatively reduced compared with the existing low-frequency array which adopts annular low-frequency radiating elements, so that the longitudinal length of the antenna is further shortened;
3. by using the non-annular second low-frequency radiation unit, the condition that the radiation arms of the radiation units interfere on the front projection surface of the reflecting plate can be well avoided on the premise that the ratio of the corresponding wavelength of the central frequency point of the low-frequency array to the corresponding wavelength of the central frequency point of the high-frequency array is up to 2.5 times, and the signal interference between the low-frequency radiation units and the high-frequency radiation units is reduced to the greatest extent;
4. the partial first high-frequency radiating units of the first high-frequency array and the partial second high-frequency radiating units of the second high-frequency array are respectively arranged at two sides of the second low-frequency radiating units, so that the problem of asymmetric radiation boundaries can be better avoided, the overall array effect is further optimized, and the overall electrical performance of the multi-frequency array antenna is better;
5. when a plurality of second low-frequency radiating elements are arranged, the distance between two adjacent second low-frequency radiating elements, the distance between two adjacent first high-frequency radiating elements and the distance between two adjacent second high-frequency radiating elements are uncorrelated, namely the high-frequency distance and the low-frequency distance in a space multiplexing area are uncorrelated, so that the longitudinal length of the antenna can be further reduced in actual array.
In general, the multi-frequency array antenna has a simple and compact array structure, can better realize the miniaturization of the multi-frequency antenna, improves the electrical performance of the whole antenna system, and has wide application prospect.
Drawings
Fig. 1 is a schematic diagram of a first structure of a multi-frequency array antenna according to an embodiment of the present application;
fig. 2 is a schematic diagram of a second structure of a multi-frequency array antenna according to an embodiment of the present application;
fig. 3 is a schematic diagram of a third structure of a multi-frequency array antenna according to an embodiment of the present application;
fig. 4 is a schematic diagram of a fourth structure of a multi-frequency array antenna according to an embodiment of the present application;
fig. 5 is a schematic diagram of a fifth structure of a multi-frequency array antenna according to an embodiment of the present application;
fig. 6 is a schematic diagram of a sixth structure of a multi-frequency array antenna according to an embodiment of the present application;
fig. 7 is a schematic diagram of a seventh structure of a multi-frequency array antenna according to an embodiment of the present application;
fig. 8 is a schematic diagram of an eighth structure of a multi-frequency array antenna according to an embodiment of the present application;
fig. 9 is a schematic diagram of a ninth structure of a multi-frequency array antenna according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
It should be noted that, in the following embodiments, terms of directions such as up, down, top, bottom, and side are merely relative to each other or refer to a normal use state of a product, and should not be construed as limiting.
Referring to fig. 1, 3 and 4, in this embodiment, the multi-frequency array antenna is a three-frequency antenna, and includes a low-frequency array (not shown) and a first high-frequency array 200 and a second high-frequency array 300 fed by different feed networks, where the low-frequency array and the first high-frequency array 200 and the second high-frequency array 300 operate in different frequency ranges, and in this embodiment, the operating frequency range of the low-frequency array is 694-960 MHz, covering the 2G and 3G mobile communication frequency ranges in the current global range, the operating frequency range of the first high-frequency array 200 may be 1427-2690 MHz, the operating frequency range of the second high-frequency array 300 may be 1427-2690 MHz, and covering the 4G mobile communication frequency range in the current global range, such as the LTE system.
The above-mentioned low-frequency array includes first low-frequency radiating elements (specifically, three first low-frequency radiating elements, that is, 111, 112, 113 in this embodiment) sequentially arranged from top to bottom along the reference longitudinal axis a, second low-frequency radiating elements 121 and third low-frequency radiating elements (specifically, three third low-frequency radiating elements, that is, 131, 132, 133 in this embodiment), radiating arms of the first low-frequency radiating elements 111, 112, 113 and radiating arms of the third low-frequency radiating elements 131, 132, 133 are all ring-shaped, for example, may be ring-shaped in a circular shape, a rectangular shape, an elliptical shape, or a polygonal shape, and of course may be ring-shaped in a polygonal shape, which may be flexibly selected according to practical needs. The radiation arm of the second low frequency radiation unit 121 is non-annular.
In practical use, the radiation arm of the second low-frequency radiation unit 121 may preferably have any one of an orthogonal "x" shape (see fig. 1 to 5) and a "cross" shape (see fig. 6). It should be understood that the shape of the radiation arm of each low frequency radiation unit refers to a shape on the orthographic projection plane of the reflection plate.
The first high-frequency array 200 is composed of a plurality of first high-frequency radiating elements shown by each hollow square in the drawing (specifically, in the present embodiment, the first high-frequency array 200 includes eight first high-frequency radiating elements 211, 212, 213, 214, 215, 216, 217, 218). The first high-frequency array 200 specifically includes a first high-frequency main body array 200a and a first high-frequency branch array 200b that are sequentially arranged from top to bottom, wherein the first high-frequency main body array 200a includes a plurality of first high-frequency radiating elements (specifically, first high-frequency radiating elements 211, 212, 213, 214, 215 in this embodiment) that are arranged at intervals in the direction of the reference longitudinal axis a above the second low-frequency radiating element 121; the first high-frequency branch array 200b includes at least two first high-frequency radiating elements (specifically, first high-frequency radiating elements 216, 217, 218 in the present embodiment) provided on one lateral side of the second low-frequency radiating element 121;
the second high-frequency array 300 is composed of a plurality of first high-frequency radiating elements shown in each hatched box (in this embodiment, eight second high-frequency radiating elements 311, 312, 313, 314, 315, 316, 317, 318 are included, as shown in the hatched boxes). The second high-frequency array 300 specifically includes a second high-frequency branch array 300b and a second high-frequency main body array 300a that are sequentially arranged from top to bottom, wherein the second high-frequency main body array 300a includes a plurality of second high-frequency radiating elements (specifically, second high-frequency radiating elements 314, 315, 316, 317, 318) that are arranged at intervals in the direction of the reference longitudinal axis a below the second low-frequency radiating element 121; the second high-frequency branch array 300b includes at least two second high-frequency radiating elements (specifically, second high-frequency radiating elements 311, 312, 313 in this embodiment) provided on the other lateral side of the second low-frequency radiating element 121. The hollow boxes and boxes with cross lines are shown in the drawings only to distinguish the first high-frequency radiating elements from the second high-frequency radiating elements, and do not represent that the shapes of the first high-frequency radiating elements and the second high-frequency radiating elements can be only square, and the shapes of the first high-frequency radiating elements and the second high-frequency radiating elements are not limited in the embodiment of the present application.
It should be understood that when the above-mentioned first high-frequency radiating elements 216, 217, 218 are provided on the left side of the second low-frequency radiating element 121, then the second high-frequency radiating elements 311, 312, 313 are provided on the right side of the second low-frequency radiating element 121; conversely, when the first high-frequency radiating elements 216, 217, 218 are disposed on the right side of the second low-frequency radiating element 121, then the second high-frequency radiating elements 311, 312, 313 are disposed on the left side of the second low-frequency radiating element 121; in practical use, the selection may be made as required, and is not limited herein. For convenience of explanation, in the present embodiment, the first high frequency radiating units 216, 217, 218 are located at the left side of the second low frequency radiating unit 121, which will be described below.
The first high-frequency radiating elements 216, 217, 218 disposed on the left side of the second low-frequency radiating element 121 may be disposed at intervals along the first longitudinal axis A1, and the second high-frequency radiating elements 311, 312, 313 disposed on the right side of the second low-frequency radiating element 121 may be disposed at intervals along the second longitudinal axis A2, and the longitudinal axes A1, A, A are preferably disposed parallel to each other to improve symmetry of the left and right boundaries. It should be noted that each of the reference longitudinal axes A1 and A, A is a dummy reference line, and in practical application, the reference longitudinal axis a is an axis symmetry line of the reflecting plate, that is, the reflecting plate is symmetrical about the reference longitudinal axis a.
The multi-frequency array antenna has at least the following advantages by using the first low-frequency radiating elements 111, 112, 113 and the third low-frequency radiating elements 131, 132, 133, which are annular in shape, of the radiating arms on the front projection surface of the reflecting plate, and the second low-frequency radiating element 121, which is orthogonal in shape of an x or a cross, of the radiating arms on the front projection surface of the reflecting plate, to form the low-frequency array:
1. three first high-frequency radiating units 216, 217, 218 and second high-frequency radiating units 311, 312, 313 can be respectively arranged on two lateral sides of the second low-frequency radiating unit 121, multiplexing of three high-frequency space spaces is achieved, the longitudinal length of the antenna is greatly shortened, and the directional pattern horizontal plane half-power beam width convergence of the first high-frequency array 200 and the second high-frequency array 300 can be better;
2. the space between the second low frequency radiating element 121 and the adjacent first low frequency radiating element 113 and the space between the second low frequency radiating element 121 and the adjacent third low frequency radiating element 131 can be relatively reduced compared with the space between the second low frequency radiating element 121 and the adjacent third low frequency radiating element 131, and the longitudinal length of the antenna is further shortened;
3. by using the second low-frequency radiating element 121 in the shape of an orthogonal x or a cross, on the premise that the ratio of the corresponding wavelength of the central frequency point of the low-frequency array to the corresponding wavelength of the central frequency point of the high-frequency array is up to 2.5 times, the condition that the radiating arms of all the radiating elements interfere on the orthographic projection surface of the reflecting plate is well avoided, and the signal interference between all the low-frequency radiating elements and the high-frequency radiating elements is reduced to the greatest extent;
4. the first high-frequency radiating units 216, 217, 218 of the first high-frequency array 200 and the second high-frequency radiating units 311, 312, 313 of the second high-frequency array 300 are respectively arranged at two sides of the second low-frequency radiating unit 121, so that the problem of asymmetric radiation boundaries can be well avoided, the overall array effect is further optimized, and the overall electrical performance of the multi-frequency array antenna is better.
The multi-frequency array antenna has a simple and compact array structure, can better realize the miniaturization of the multi-frequency antenna, improves the electrical performance of the whole antenna system, and has wide application prospect.
Referring to fig. 2 and 5, as a preferred embodiment of the present application, at least two second low frequency radiating elements are provided, and each second low frequency radiating element is disposed between the first low frequency radiating element and the third low frequency radiating element at intervals. In particular, in the present embodiment, the first high-frequency array 200 includes first high-frequency radiating elements 211, 212, 213, 214, 215, 216, 217, 218, 219, and 220; wherein the first high-frequency main body array 200a includes first high-frequency radiating elements 211, 212, 213, 214, and 215 disposed above the second low-frequency radiating element 121 along the reference longitudinal axis a; the first high-frequency branch array 200b includes first high-frequency radiating elements 216, 217, 218, 219, and 220 disposed offset to one lateral side of the second low-frequency radiating elements 121 and 122 along the first longitudinal axis A1. The second high-frequency array 300 includes second high-frequency radiating elements 311, 312, 313, 314, 315, 316, 317, 318, 319, and 320; wherein the second high-frequency branch array 300b includes second high-frequency radiating elements 311, 312, 313, 314, and 315 disposed at the other lateral side of the second low-frequency radiating elements 121, 122 along the second longitudinal axis A2, and the second high-frequency main body array 300a includes second high-frequency radiating elements 316, 317, 318, 319, and 320 disposed below the second low-frequency radiating element 122 along the reference longitudinal axis a; unlike the embodiment shown in fig. 1, the present embodiment is provided with two second low frequency radiating elements 121, 122, which further improves the spatial multiplexing rate, and makes it possible to make the spacing d2 between the adjacent two second low frequency radiating elements 121, 122 and the spacing d1 between the adjacent two first high frequency radiating elements and the spacing d3 between the adjacent two second high frequency radiating elements uncorrelated, i.e., uncorrelated, at the high and low frequency spacing of the spatial multiplexing region, so that the longitudinal length of the antenna can be further reduced at the time of actual grouping.
It should be understood that the number of the first low frequency radiating element, the second low frequency radiating element and the third low frequency radiating element may be set according to actual needs, and is not particularly limited.
Referring to fig. 2 and 5, as a preferred embodiment of the present application, among the first high-frequency radiating elements 216, 217, 218, 219 and 220 of the first high-frequency branch array 200b, a spacing d1 between adjacent two first high-frequency radiating elements is 0.3 to 0.5 times a spacing d2 between adjacent two second low-frequency radiating elements 121, 122; among the second high-frequency radiating elements 311, 312, 313, 314, and 315 of the second high-frequency branch array 300b, the interval d3 between two adjacent second high-frequency radiating elements is 0.3 to 0.5 times the interval d2 between two adjacent second low-frequency radiating elements 121, 122. The grating lobes can be well restrained by adopting the structure, and the radiation performance is further optimized.
When the low frequency array, the first high frequency array 200, and the second high frequency array 300 operate in the above specified operating frequency band range, the array structure between the radiation units may be determined as follows: the distance d2 between two adjacent second low-frequency radiation units 121, 122 is 0.5-1.0 times of the wavelength corresponding to the central frequency point of the working frequency range, and the distance d2 is more preferably 0.8 times; similarly, in the first high-frequency radiating elements 216, 217, 218, 219 and 220 of the first high-frequency branch array 200b, the interval d1 between two adjacent first high-frequency radiating elements is 0.5 to 1.0 times the wavelength corresponding to the center frequency point of the operating frequency band range, and the interval d1 is preferably also 0.8 times; similarly, in the second high-frequency radiating elements 311, 312, 313, 314 and 315 of the second high-frequency branch array 300b, the distance d3 between two adjacent second high-frequency radiating elements is 0.5 to 1.0 times the wavelength corresponding to the center frequency point of the operating frequency band range, and the distance d3 is preferably 0.8 times.
In practical applications, the intervals between the first rf radiating elements 216, 217, 218, 219, 220 may be adjusted to be approximately equidistant, and the intervals between the second rf radiating elements 311, 312, 313, 314, 315 may be adjusted to be approximately equidistant, which will be known to those skilled in the art, and thus will not be described in detail.
Referring to fig. 3 to 5, in some embodiments, at least one of the low frequency array, the first high frequency branch array 200b, the first high frequency body array 200a, the second high frequency branch array 300b, and the second high frequency body array 300a may be distributed in an "S" shape in a longitudinal direction. Specifically, among the first high-frequency radiating elements of the first high-frequency branch array 200b, a part of the first high-frequency radiating elements may be located on the first longitudinal axis A1, and the rest of the first high-frequency radiating elements may be located on the third longitudinal axis A3, where the third longitudinal axis A1 and the third longitudinal axis A3 are disposed at a lateral interval; of the second high-frequency radiating elements of the second high-frequency branch array 300b, a portion of the second high-frequency radiating elements may be located on the second longitudinal axis A2, and the remaining second high-frequency radiating elements may be located on the fourth longitudinal axis A4, with the second longitudinal axis A2 being laterally spaced from the fourth longitudinal axis A4. FIG. 3 illustrates one embodiment of the S-shaped distribution of the first high frequency branch array 200b and the second high frequency branch array 300b, specifically, the first high frequency radiating elements 216 and 218 are located on the third longitudinal axis A3, and the first high frequency radiating element 217 is located on the first longitudinal axis A1; the second high-frequency radiating elements 311 and 313 are located on the fourth longitudinal axis A4, and the second high-frequency radiating element 312 is located on the second longitudinal axis A2. Similarly, fig. 5 also shows an embodiment in which the first high-frequency branch arrays 200b and the second high-frequency branch arrays 300b are S-shaped, specifically, the first high-frequency radiating elements 216, 218, and 220 are located on the third longitudinal axis A3, and the first high-frequency radiating elements 217 and 219 are located on the first longitudinal axis A1, so that the first high-frequency branch arrays 200b are substantially S-shaped, in other words, the respective first high-frequency radiating elements of the first high-frequency branch arrays 200b are staggered in the longitudinal direction, rather than being linearly distributed; the second high-frequency radiating elements 311, 313 and 315 are located on the fourth longitudinal axis A4, and the first high-frequency radiating elements 312 and 314 are located on the second longitudinal axis A2 such that the second high-frequency branch arrays 300b are substantially S-shaped, in other words, the respective second high-frequency radiating elements of the second high-frequency branch arrays 300b are staggered in the longitudinal direction rather than being linearly distributed. Similarly, fig. 4 shows an embodiment in which the low frequency array is S-shaped, in particular, the first low frequency radiating elements 111, 112 and the third low frequency radiating elements 132 and 133 are each offset laterally by a distance with respect to the longitudinal axis a, so that the low frequency array is substantially S-shaped, rather than being straight. The array type can achieve better space multiplexing effect.
If the spacing between the first low-frequency radiating element and the second low-frequency radiating element allows, a first high-frequency radiating element positioned on the reference longitudinal axis A can be further arranged between the first low-frequency radiating element and the second low-frequency radiating element which are adjacent in the longitudinal direction, so that the spacing space between the first low-frequency radiating element and the second low-frequency radiating element is fully utilized. Similarly, a second high-frequency radiation element lying on the reference longitudinal axis a can also be provided between a second low-frequency radiation element and a third low-frequency radiation element which are adjacent in the longitudinal direction.
Referring to fig. 7 to 9, in some embodiments, unlike fig. 1 to 6, the radiation arm of the second low frequency radiation unit 121 is formed on the front projection surface of the reflection plateShape (see FIG. 7), "[]"shape (refer to FIG. 9) or +.>Shape (refer to fig. 8). In the present embodiment, one first high-frequency radiating element 217 of the first high-frequency branch array 200b and one second high-frequency radiating element 312 of the second high-frequency branch array 300b are included in the setting range of the second low-frequency radiating element 121. The second low frequency radiating element with the shape can achieve similar array advantages as the cross-shaped second low frequency radiating element shown in fig. 1 to 6, and the foregoing description is specifically referred to and omitted herein.
Referring to fig. 1 to 9, in order to further improve the radiation performance of the antenna and reduce the difficulty of arranging the radiation elements, each first high-frequency radiation element of the first high-frequency branch array 200b and each second high-frequency radiation element of the second high-frequency branch array 300b are preferably arranged in a one-to-one symmetry.
Referring to fig. 1 to 9, as a preferred embodiment of the present application, each of the first low frequency radiating elements is embedded with a first high frequency radiating element, and each of the third low frequency radiating elements is embedded with a second high frequency radiating element. Compared with the traditional side by side adjacent technical scheme, the antenna has smaller width and frontal area, is beneficial to further reducing the size of the antenna and has better effect on further improving the electrical performance by adopting the high-frequency and low-frequency coaxial nesting scheme.
In practical application, the multi-frequency array antenna provided by the embodiment of the application may further include a plurality of rows of the low-frequency arrays arranged at intervals in a transverse direction, wherein at least a part of the low-frequency arrays are correspondingly provided with the first high-frequency array 200 and the second high-frequency array 300, and a transverse distance between two adjacent rows of the low-frequency arrays is 0.5λ -1.1λ. λ refers to the wavelength corresponding to the center operating frequency of the low frequency radiating elements of the two columns of low frequency arrays. The multi-frequency array antenna can be expanded into a four-frequency array antenna, a five-frequency array antenna and the like by the array form.
In some embodiments, according to the technical idea of the present application, the number of times of multiplexing the high-frequency space between the first high-frequency radiating element and the second high-frequency radiating element may be further increased in the direction of the reference longitudinal axis a, so that the multi-frequency array antenna provided by the embodiment of the present application is expanded into a four-frequency array antenna, a five-frequency array antenna, and the like.
It should be noted that, in the multi-frequency array antenna according to the embodiment of the present application, when each of the first low-frequency radiating element, the second low-frequency radiating element, the third low-frequency radiating element, the first high-frequency radiating element, and the second high-frequency radiating element are disposed on the reflecting plate, it is required to satisfy: there is no interference between any two radiation units in the orthographic projection range on the reflecting plate at the physical position. The radiating elements are preferably dipoles, and the radiating arms are supported by balun elements having dipoles. Each radiating element can be in a three-dimensional structure arrangement form, or can adopt the existing planar printing radiating element (such as a microstrip oscillator), a patch oscillator, a half-wave oscillator and the like; or a combination of any of the above types of antenna elements. In addition, each radiating element preferably adopts a dual polarized radiating element to facilitate improving the stability of communication performance, and in particular, in this embodiment, the dual polarized radiating element may be a common ±45° polarized element, or may be a vertical/horizontal polarized element, which is not limited herein.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (9)
1. A multi-frequency array antenna, comprising:
the low-frequency array comprises a first low-frequency radiation unit, a second low-frequency radiation unit and a third low-frequency radiation unit which are sequentially arranged from top to bottom along the direction of a reference longitudinal axis, the radiation arm of the first low-frequency radiation unit and the radiation arm of the third low-frequency radiation unit are annular, and the radiation arm of the second low-frequency radiation unit is non-annular;
the first high-frequency array comprises a first high-frequency main body array and a first high-frequency branch array which are sequentially arranged from top to bottom, the first high-frequency main body array comprises a plurality of first high-frequency radiating units which are arranged at intervals in the direction of the reference longitudinal axis above the second low-frequency radiating units, and the first high-frequency branch array comprises at least two first high-frequency radiating units which are arranged at one side of the transverse direction of the reference longitudinal axis;
the second high-frequency array comprises a second high-frequency branch array and a second high-frequency main body array which are sequentially arranged from top to bottom, the second high-frequency branch array comprises at least two second high-frequency radiating units which are arranged on the other side of the transverse direction of the reference longitudinal axis in an offset mode, and the second high-frequency main body array comprises a plurality of second high-frequency radiating units which are arranged at intervals in the direction of the reference longitudinal axis below the second low-frequency radiating units;
the first high-frequency radiating unit is embedded in the first low-frequency radiating unit, and the second high-frequency radiating unit is embedded in the third low-frequency radiating unit.
2. The multi-frequency array antenna according to claim 1, wherein the two polarized radiation arms of the second low-frequency radiation unit are in any one of orthogonal "x" shape and "cross" shape;
alternatively, the radiating arm of the second low-frequency radiating element is in the form ofShape, "[ V-shape ]]"shape>And one of the first high-frequency radiating elements in the first high-frequency branch array and one of the second high-frequency radiating elements in the second high-frequency branch array are included in a setting range of the second low-frequency radiating elements.
3. The multiple frequency array antenna of claim 1, wherein there are at least two second low frequency radiating elements, each of the second low frequency radiating elements being disposed between the first low frequency radiating element and the third low frequency radiating element at intervals.
4. The multi-frequency array antenna according to claim 3, wherein a space between two adjacent first high-frequency radiating elements among the plurality of first high-frequency radiating elements of the first high-frequency branch array is 0.3 to 0.5 times a space between two adjacent second low-frequency radiating elements;
and in the plurality of second high-frequency radiating units of the second high-frequency branch array, the interval between two adjacent second high-frequency radiating units is 0.3-0.5 times of the interval between two adjacent second low-frequency radiating units.
5. The multi-frequency array antenna according to claim 3, wherein a space between two adjacent second low-frequency radiating elements is 0.5-1.0 times of a wavelength corresponding to a center frequency point of an operating frequency band range thereof;
among the plurality of first high-frequency radiating units of the first high-frequency branch array, the interval between two adjacent first high-frequency radiating units is 0.5-1.0 times of the wavelength corresponding to the central frequency point of the working frequency range;
and in the plurality of second high-frequency radiating units of the second high-frequency branch array, the interval between two adjacent second high-frequency radiating units is 0.5-1.0 times of the wavelength corresponding to the central frequency point of the working frequency range.
6. The multi-frequency array antenna according to claim 1, wherein at least one of the low-frequency array, the first high-frequency main body array, the first high-frequency branch array, the second high-frequency main body array, and the second high-frequency branch array is distributed in an "S" shape in a longitudinal direction.
7. The multi-frequency array antenna according to claim 1, wherein each of the first high-frequency radiating elements of the first high-frequency stub array and each of the second high-frequency radiating elements of the second high-frequency stub array are arranged in one-to-one symmetry.
8. The multi-frequency array antenna according to claim 1, wherein the multi-frequency array antenna comprises a plurality of columns of low-frequency arrays arranged at intervals in the transverse direction, the first high-frequency array and the second high-frequency array are correspondingly arranged in at least part of the low-frequency arrays, the transverse distance between two adjacent columns of the low-frequency arrays is 0.5λ -1.1λ, and λ is the wavelength corresponding to the central working frequency of the low-frequency radiating units of the low-frequency arrays of the two adjacent columns.
9. The multi-frequency array antenna according to any one of claims 1 to 8, wherein the low-frequency array has an operating frequency range of 694 to 960MHz, the first high-frequency array has an operating frequency range of 1427 to 2690MHz, and the second high-frequency array has an operating frequency range of 1427 to 2690MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267760.3A CN109301459B (en) | 2018-10-29 | 2018-10-29 | multi-frequency array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267760.3A CN109301459B (en) | 2018-10-29 | 2018-10-29 | multi-frequency array antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109301459A CN109301459A (en) | 2019-02-01 |
| CN109301459B true CN109301459B (en) | 2023-10-03 |
Family
ID=65158210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811267760.3A Active CN109301459B (en) | 2018-10-29 | 2018-10-29 | multi-frequency array antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109301459B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265795B (en) * | 2019-07-02 | 2024-02-27 | 京信通信技术(广州)有限公司 | Multi-frequency narrow beam antenna |
| CN112397885A (en) * | 2020-10-28 | 2021-02-23 | 广东盛路通信科技股份有限公司 | High-low frequency array antenna |
| CN112736470B (en) * | 2020-12-01 | 2023-08-25 | 中信科移动通信技术股份有限公司 | Multi-frequency array antenna and base station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094715A (en) * | 2012-01-13 | 2013-05-08 | 京信通信系统（中国）有限公司 | Antenna control system and multi-frequency shared antenna |
| CN106129601A (en) * | 2016-08-31 | 2016-11-16 | 广东通宇通讯股份有限公司 | Antenna for base station |
| CN107611611A (en) * | 2017-08-11 | 2018-01-19 | 广东博纬通信科技有限公司 | One kind miniaturization ultra-wideband multisystem array antenna |
| CN209001145U (en) * | 2018-10-29 | 2019-06-18 | 京信通信系统（中国）有限公司 | Multi-frequency array antenna |
-
2018
- 2018-10-29 CN CN201811267760.3A patent/CN109301459B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094715A (en) * | 2012-01-13 | 2013-05-08 | 京信通信系统（中国）有限公司 | Antenna control system and multi-frequency shared antenna |
| CN106129601A (en) * | 2016-08-31 | 2016-11-16 | 广东通宇通讯股份有限公司 | Antenna for base station |
| CN107611611A (en) * | 2017-08-11 | 2018-01-19 | 广东博纬通信科技有限公司 | One kind miniaturization ultra-wideband multisystem array antenna |
| CN209001145U (en) * | 2018-10-29 | 2019-06-18 | 京信通信系统（中国）有限公司 | Multi-frequency array antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109301459A (en) | 2019-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3619770B1 (en) | Multi-band base station antennas having crossed-dipole radiating elements | |
| CN110858679B (en) | Multiband base station antenna with broadband decoupling radiating element and related radiating element | |
| US11909121B2 (en) | Radiating elements having angled feed stalks and base station antennas including same | |
| US20200127389A1 (en) | Antennas including multi-resonance cross-dipole radiating elements and related radiating elements | |
| EP3304645B1 (en) | A simplified multi-band multi-beam base-station antenna architecture and its implementation | |
| US9711853B2 (en) | Broadband low-beam-coupling dual-beam phased array | |
| CN111244625B (en) | Dual-frequency dual-polarized antenna and radiating unit | |
| KR101672502B1 (en) | Dual-polarized, omnidirectional antenna | |
| CN103762425A (en) | Double-frequency double-circular polarization common-caliber antenna array for two-dimensional phase control scanning | |
| CN111786081A (en) | Multiband base station antenna with integrated array | |
| CN109301459B (en) | multi-frequency array antenna | |
| WO2008148569A2 (en) | Dual-polarized radiating element, dual-band dual-polarized antenna assembly and dual-polarized antenna array | |
| US12088017B2 (en) | Radiating element, antenna assembly and base station antenna | |
| AU2014213078A1 (en) | An antenna arrangement and a base station | |
| CN106252903B (en) | Dual-frequency two-beam antenna array and dual-frequency two-beam antenna | |
| CN112242603A (en) | Base station antenna with multiband beamformer array and related method of operation | |
| US20230299505A1 (en) | High performance folded dipole for multiband antennas | |
| AU2014211633A1 (en) | An antenna arrangement and a base station | |
| CN210430093U (en) | Antenna assembly for beamforming antenna and base station antenna | |
| CN113451755A (en) | Stealth radiating element with asymmetric dipole radiator and multiband base station antenna comprising such radiating element | |
| CN110534883B (en) | Broadband low-profile dual-polarized antenna adopting double-aperture coupling excitation | |
| CN112768878A (en) | Antenna assembly for beamforming antenna and base station antenna | |
| CN112133999A (en) | Base station antenna | |
| US20230006367A1 (en) | BASE STATION ANTENNAS INCLUDING SLANT +/- 45º AND H/V CROSS-DIPOLE RADIATING ELEMENTS THAT OPERATE IN THE SAME FREQUENCY BAND | |
| CN209766628U (en) | Base station antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200728 Address after: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Applicant after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Address before: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Applicant before: COMBA TELECOM SYSTEMS (CHINA) Ltd. Applicant before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Applicant before: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Applicant before: TIANJIN COMBA TELECOM SYSTEMS Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230804 Address after: 510730, No. 6, Jin Lu, Guangzhou economic and Technological Development Zone, Guangdong, Guangzhou Applicant after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Applicant after: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Address before: 510730, No. 6, Jin Lu, Guangzhou economic and Technological Development Zone, Guangdong, Guangzhou Applicant before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |