Miniaturized six-high multi-port base station antenna

Abstract

The invention relates to the technical field of wireless communication, in particular to a miniaturized six-high multi-port base station antenna which comprises a reflecting plate, high-frequency radiation elements and four paths of high-frequency radiation antenna arrays composed of the high-frequency radiation elements, and isolating bars I arranged in the length direction of the arrays are arranged among the four paths of high-frequency radiation antenna arrays. The periphery of each high-frequency radiation element is provided with a second isolation strip, a third isolation strip is arranged between the adjacent high-frequency radiation elements in the same array, the third isolation strip is arranged between the second isolation strips on the periphery of the adjacent high-frequency radiation elements, and the first high-frequency radiation antenna array and the fourth high-frequency radiation antenna array are arranged on the two sides of the reflecting plate. The second high-frequency radiation antenna array and the third high-frequency radiation antenna array are arranged in the middle of the reflecting plate, and the four high-frequency radiation antenna arrays are arranged in a staggered mode. According to the six-high multi-port base station antenna, the requirement of a six-path high-frequency radiation antenna array is met by utilizing the four-path high-frequency radiation antenna array, the size of the antenna is effectively reduced, and the miniaturization of the antenna is realized.

Description

Technical Field

[0001] The invention relates to the technical field of wireless communication, and in particular to a miniaturized six-height multi-port base station antenna. Background Art

[0002] With the rapid development of mobile communication systems, antennas, as an important component, are also facing severe challenges. In recent years, the coexistence of multiple network standards has made site resources increasingly tight. Multi-port antennas can make full use of the internal space of the antenna and save costs. Therefore, multi-port antennas have gradually become a development trend.

[0003] At present, the design of high-frequency multi-port antennas generally adopts one or two low-frequency and two or more high-frequency linear arrays arranged side by side. Miniaturization is achieved by reducing the distance between the two linear arrays, and some special boundaries are used to reduce the mutual coupling between array elements. However, this layout will greatly reduce the performance of the antenna, because the reduction in spacing will lead to the intensification of the mutual coupling effect between the antenna array elements, thereby affecting indicators such as antenna gain, side lobes and antenna efficiency. Summary of the invention

[0004] In order to solve the problem that the existing antennas are miniaturized by reducing the array spacing, which easily leads to antenna performance degradation and aggravated mutual coupling effect, the present invention provides a miniaturized six-high multi-port base station antenna, which uses a reflector, a high-frequency radiating element, a circuit module composed of a phase shifting circuit and a power division circuit, and a four-way high-frequency radiating antenna array composed of a combining circuit and a high-frequency radiating element. The requirements of a six-way high-frequency radiating antenna array are achieved by using the four-way high-frequency radiating antenna array, effectively reducing the antenna size and realizing antenna miniaturization.

[0005] The present invention provides a miniaturized six-high multi-port base station antenna, comprising a reflector, a high-frequency radiation element arranged on the reflector, and a four-way high-frequency radiation antenna array composed of the high-frequency radiation elements, wherein the four-way high-frequency radiation antenna arrays are provided with a first isolation strip arranged along the length direction of the array, each high-frequency radiation element is provided with a second isolation strip around it, and adjacent high-frequency radiation elements in the same array are further provided with a third isolation strip, and the third isolation strip is arranged between the second isolation strips on the periphery of the adjacent high-frequency radiation elements. The four-way high-frequency radiation antenna array meets the requirements of the six-way high-frequency radiation antenna array, effectively reduces the size of the antenna, and realizes the miniaturization of the antenna.

[0006] Furthermore, the four-way high-frequency radiation antenna array is divided into high-frequency radiation antenna array 1, high-frequency radiation antenna array 2, high-frequency radiation antenna array 3 and high-frequency radiation antenna array 4, high-frequency radiation antenna array 1 and high-frequency radiation antenna array 4 are arranged on both sides of the reflector, high-frequency radiation antenna array 2 and high-frequency radiation antenna array 3 are arranged in the middle of the reflector, and the four-way high-frequency radiation antenna array is staggered, high-frequency radiation antenna array 1 and high-frequency radiation antenna array 3 are aligned, and high-frequency radiation antenna array 2 and high-frequency radiation antenna array 4 are aligned. There are many frequency bands for multi-port antennas, and the frequency bands need to be segmented in detail.

[0007] Furthermore, the operating frequency bands of the high-frequency radiation antenna array two and the high-frequency radiation antenna array three are both 1710-2690 MHz, and the operating frequency bands of the high-frequency radiation antenna array one and the high-frequency radiation antenna array four are 1710-2170 MHz and 2300-2690 MHz.

[0008] Furthermore, the reflector includes a horizontal bottom plate and vertical plates arranged on both sides of the bottom plate. The length of the vertical plates is L and the height is H, and H is 0.2-0.3 times the corresponding wavelength of the high-frequency radiation antenna array.

[0009] Furthermore, the distance from the center of the high-frequency radiation element close to one side of the vertical plate to the vertical plate is A, and A is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element is located.

[0010] Furthermore, the distance from the center of the high-frequency radiation element to the second isolation strip is B, and B is 0.2-0.3 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element is located.

[0011] Furthermore, the distance from the center of the high-frequency radiation element to the isolation strip 1 is C, and C is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element is located.

[0012] Furthermore, the distance between the isolation strip 1 close to one side of the vertical plate and the vertical plate is D, and D is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array between the vertical plate and the isolation strip 1.

[0013] Furthermore, the high-frequency radiation antenna array 1, the high-frequency radiation antenna array 2, the high-frequency radiation antenna array 3 and the high-frequency radiation antenna array 4 are all composed of 12 high-frequency radiation elements arranged in sequence at equal intervals. For the beautification and performance requirements of the antenna, the arrays need to be arranged in sequence.

[0014] Furthermore, the high-frequency radiating elements are all high-frequency metal half-wave die-cast radiating elements, which include a high-frequency array, a plastic insulating base, a feed structure 1, a feed structure 2, supporting plastics and a square guide plate. The high-frequency array is vertically fixed to the horizontal bottom plate of the reflector through the plastic insulating base, and the feed structure 1 and the feed structure 2 are both arranged on the high-frequency array. A square guide plate is arranged above the high-frequency array through the supporting plastic. In order to achieve the high performance requirements of the antenna, various optimizations need to be made to the high-frequency radiating elements.

[0015] The beneficial effects of the present invention are: The present invention provides a miniaturized six-high multi-port base station antenna, in which two high-frequency radiation arrays are arranged in sequence in the middle of the reflector, and another two high-frequency radiation antenna arrays are distributed on both sides of the reflector. Through the combining technology and various isolation technologies, the two high-frequency radiation antenna arrays located on both sides of the reflector achieve the effect of a four-way high-frequency radiation antenna array, thereby achieving the goal of a six-way high-frequency radiation antenna array, effectively reducing the size of the antenna, ensuring the miniaturization of the antenna, and saving the overall cost of the antenna, which has strong competitiveness in future base station antennas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementations of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 is a top view of the six-high multi-port antenna; Figure 2 It is an exploded diagram of the high frequency radiation element; Figure 3 is a side view of the six-high multi-port antenna; Figure 4 It is the horizontal plane radiation pattern of the six-high multi-port antenna in the 1940MHz band; Figure 5 It is the horizontal plane radiation pattern of the six-high multi-port antenna in the 2200MHz band; Figure 6 It is the horizontal plane radiation pattern of the six-high multi-port antenna in the 2495MHz band; In the figure, 1. high-frequency radiating element, 11. high-frequency array, 12. plastic insulating base, 13. feeding structure one, 14. feeding structure two, 15. supporting plastic, 16. square guide plate, 2. reflecting plate, 3. isolation strip one, 4. isolation strip two, 5. isolation strip three, 10. high-frequency radiating antenna array one, 20. high-frequency radiating antenna array two, 30. high-frequency radiating antenna array three, 40. high-frequency radiating antenna array four. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] In order to achieve antenna miniaturization while ensuring the electrical performance of the antenna, a miniaturized six-high multi-port base station antenna is designed. Figure 1 As shown, it includes a reflector 2, a high-frequency radiation element 1 arranged on the reflector 2, and a four-way high-frequency radiation antenna array composed of the high-frequency radiation elements 1. The four-way high-frequency radiation antenna arrays are provided with isolation strips 1 3 arranged along the length direction of the array, and each high-frequency radiation element 1 is provided with isolation strips 2 4 around it. There are also isolation strips 3 5 between adjacent high-frequency radiation elements 1 in the same array, and the isolation strips 3 5 are arranged between the isolation strips 2 4 on the periphery of the adjacent high-frequency radiation elements 1. Among them, the isolation strips 1 3 are distributed between two of the four-way high-frequency radiation antenna arrays and are made of aluminum strips. The isolation strips 2 4 are distributed around each high-frequency radiation element, and are placed opposite to each other in pairs, and are made of aluminum strips. The isolation strips 3 5 are distributed in the middle of two high-frequency radiation elements, and are supported and placed by two plastic support rods, and are made of aluminum strips.

[0019] The overall layout of the base station antenna uses combining technology and special isolation technology to make the four-way high-frequency radiating antenna array meet the requirements of a six-way high-frequency radiating antenna array, effectively reducing the antenna size, achieving antenna miniaturization, and saving the overall cost of the antenna; while ensuring the miniaturization of the antenna, the overall electrical performance of the antenna is maintained at a high level to meet market demand.

[0020] The four-way high-frequency radiation antenna array is divided into a high-frequency radiation antenna array one 10, a high-frequency radiation antenna array two 20, a high-frequency radiation antenna array three 30 and a high-frequency radiation antenna array four 40. The high-frequency radiation antenna array one 10 and the high-frequency radiation antenna array four 40 are arranged on both sides of the reflection plate 2, and the high-frequency radiation antenna array two 20 and the high-frequency radiation antenna array three 30 are arranged in the middle of the reflection plate 2. The four-way high-frequency radiation antenna array is staggered, and the high-frequency radiation antenna array one 10 and the high-frequency radiation antenna array three 30 are aligned, and the high-frequency radiation antenna array two 20 and the high-frequency radiation antenna array four 40 are aligned.

[0021] Among them, the high-frequency radiation antenna array 20 and the high-frequency radiation antenna array 30 each realize a high-frequency frequency band, and the working frequency bands are 1710-2690MHz, and the high-frequency radiation antenna array 10 and the high-frequency radiation antenna array 40 each realize two high-frequency frequency bands, and the working frequency bands are 1710-2170MHz and 2300-2690MHz respectively.

[0022] Through the combining technology and isolation technology, the high-frequency radiation antenna array 10 and the high-frequency radiation antenna array 40 located on both sides of the reflection plate 2 are arranged on the reflection plate 2 to achieve the effect of a four-way high-frequency radiation antenna array, thereby achieving the goal of a six-way high-frequency radiation antenna array as a whole.

[0023] like Figure 2 As shown, the high-frequency radiation antenna array 10, the high-frequency radiation antenna array 20, the high-frequency radiation antenna array 30 and the high-frequency radiation antenna array 40 are all composed of 12 high-frequency radiation elements 1 arranged in sequence at equal intervals. Specifically, the high-frequency radiation elements 1 are all high-frequency metal half-wave die-cast radiation elements, and the high-frequency radiation elements 1 include a high-frequency array 11, a plastic insulating base 12, a feed structure 13, a feed structure 2 14, a supporting plastic 15 and a square guide plate 16. The high-frequency array 11 is vertically fixed to the horizontal bottom plate of the reflection plate 2 through the plastic insulating base 12, and the feed structure 1 13 and the feed structure 2 14 are both arranged on the high-frequency array 11. A square guide plate 16 is arranged above the high-frequency array 11 through the supporting plastic 15. The length, width and height of the high-frequency array 11 are all 0.35-0.45 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array.

[0024] like Figure 3 As shown, the reflector 2 includes a horizontal bottom plate and vertical plates arranged on both sides of the bottom plate. The height of the vertical plates is H, and H is 0.2-0.3 times the corresponding wavelength of the high-frequency radiation antenna array.

[0025] The distance from the center of the high-frequency radiation element 1 close to the vertical plate to the vertical plate is A, which is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element 1 is located; the distance from the center of the high-frequency radiation element 1 to the isolation strip 4 is B, which is 0.2-0.3 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element 1 is located; the distance from the center of the high-frequency radiation element 1 to the isolation strip 3 is C, which is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element 1 is located; the distance from the isolation strip 3 close to the vertical plate and the vertical plate is D, which is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array between the vertical plate and the isolation strip 3.

[0026] like Figure 4-6 It can be seen that the miniaturized six-high multi-port base station antenna has an optimal horizontal radiation pattern in each frequency band and maintains a high performance level. It is an ideal base station antenna solution with high practical value.

[0027] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.

Claims

1. A miniaturized six-high multi-port base station antenna, characterized in that: It comprises a reflection plate (2), a high-frequency radiation element (1) arranged on the reflection plate (2), and a four-way high-frequency radiation antenna array composed of the high-frequency radiation elements (1). Isolation strips (3) are arranged along the length direction of the arrays between the four high-frequency radiation antenna arrays, and isolation strips (4) are arranged around each high-frequency radiation element (1). Isolation strips (5) are also arranged between adjacent high-frequency radiation elements (1) in the same array, and the isolation strips (5) are arranged between the isolation strips (4) on the periphery of adjacent high-frequency radiation elements (1).

2. A miniaturized six-height multi-port base station antenna according to claim 1, characterized in that: The four high-frequency radiation antenna arrays are divided into a high-frequency radiation antenna array one (10), a high-frequency radiation antenna array two (20), a high-frequency radiation antenna array three (30) and a high-frequency radiation antenna array four (40), The high-frequency radiation antenna array one (10) and the high-frequency radiation antenna array four (40) are arranged on both sides of the reflection plate (2), and the high-frequency radiation antenna array two (20) and the high-frequency radiation antenna array three (30) are arranged in the middle of the reflection plate (2). The four high-frequency radiation antenna arrays are arranged in a staggered manner, the high-frequency radiation antenna array one (10) is aligned with the high-frequency radiation antenna array three (30), and the high-frequency radiation antenna array two (20) is aligned with the high-frequency radiation antenna array four (40).

3. A miniaturized six-height multi-port base station antenna according to claim 2, characterized in that: The operating frequency bands of the high frequency radiation antenna array two (20) and the high frequency radiation antenna array three (30) are both 1710-2690 MHz, and the operating frequency bands of the high frequency radiation antenna array one (10) and the high frequency radiation antenna array four (40) are 1710-2170 MHz and 2300-2690 MHz.

4. The miniaturized six-height multi-port base station antenna according to claim 2, characterized in that: The reflector (2) comprises a horizontal bottom plate and vertical plates arranged on both sides of the bottom plate, wherein the height of the vertical plates is H, and H is 0.2-0.3 times the corresponding wavelength of the high-frequency radiation antenna array.

5. The miniaturized six-height multi-port base station antenna according to claim 4, characterized in that: The distance from the center of the high-frequency radiation element (1) close to one side of the vertical plate to the vertical plate is A, and A is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element (1) is located.

6. The miniaturized six-height multi-port base station antenna according to claim 5, characterized in that: The distance from the center of the high-frequency radiation element (1) to the second isolation strip (4) is B, and B is 0.2-0.3 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element (1) is located.

7. The miniaturized six-height multi-port base station antenna according to claim 6, characterized in that: The distance from the center of the high-frequency radiation element (1) to the isolation strip 1 (3) is C, and C is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array in the column where the high-frequency radiation element (1) is located.

8. The miniaturized six-height multi-port base station antenna according to claim 7, characterized in that: The distance between the isolation strip 1 (3) close to one side of the vertical plate and the vertical plate is D, and D is 0.4-0.6 times the wavelength corresponding to the center frequency of the high-frequency radiation antenna array between the vertical plate and the isolation strip 1 (3).

9. The miniaturized six-height multi-port base station antenna according to claim 4, characterized in that: The high-frequency radiation antenna array one (10), the high-frequency radiation antenna array two (20), the high-frequency radiation antenna array three (30) and the high-frequency radiation antenna array four (40) are each composed of 12 high-frequency radiation elements (1) arranged in sequence at equal intervals.

10. According to the miniaturized six-high multi-port base station antenna of claim 9, the high-frequency radiating elements (1) are all high-frequency metal half-wave die-cast radiating elements, and the high-frequency radiating elements (1) include a high-frequency array (11), a plastic insulating base (12), a feed structure one (13), a feed structure two (14), a supporting plastic (15) and a square guide plate (16). The high-frequency array (11) is vertically fixed to the horizontal bottom plate of the reflector (2) through the plastic insulating base (12), the feed structure one (13) and the feed structure two (14) are both arranged on the high-frequency array (11), and a square guide plate (16) is arranged above the high-frequency array (11) through the supporting plastic (15), and the length, width and height of the high-frequency array (11) are all 0.35-0.45 times the wavelength corresponding to the center frequency of the high-frequency radiating antenna array.

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