阅读说明：本技术 一种小型化四低频多端口基站天线 (Miniaturized four-low-frequency multi-port base station antenna ) 是由 丁勇 凌聪 姚春宏 于 2020-07-29 设计创作，主要内容包括：本发明涉及一种紧凑型四低超宽频基站天线,主要由反射板、低频辐射阵列、隔离条以及电桥组成。四组低频辐射阵列在反射板同一平面上,单独一列辐射单元呈等间距放置,并且在同一轴线上；第一辐射阵列与第二辐射阵列并排放置,第三辐射阵列与第四辐射阵列并排放置,第二辐射阵列与第三辐射阵列错位放置；四组阵列之间均设置有隔离条。该发明采用PCB振子,能有效降低产品重量,减小运输费用,方便安装；阵列与阵列之间设置隔离条,第二列与第三列辐射单元错位放置,可以有效减少天线阵列间的边界效应,还可以降低高频阵列与低频阵列的互耦性,并排两列部分辐射单元通过电桥相连接,能最大化地缩小天线尺寸,进而减小风阻,方便施工安装,降低生产成本。(The invention relates to a compact four-low ultra-wideband base station antenna which mainly comprises a reflecting plate, a low-frequency radiation array, a spacer and an electric bridge. Four groups of low-frequency radiation arrays are arranged on the same plane of the reflecting plate, and a single row of radiation units are arranged at equal intervals and are arranged on the same axis; the first radiation array and the second radiation array are arranged side by side, the third radiation array and the fourth radiation array are arranged side by side, and the second radiation array and the third radiation array are arranged in a staggered mode; and isolation strips are arranged between the four groups of arrays. The PCB vibrator is adopted, so that the weight of a product can be effectively reduced, the transportation cost is reduced, and the installation is convenient; the isolation strips are arranged between the arrays, the second row and the third row of radiating units are arranged in a staggered mode, the boundary effect between the antenna arrays can be effectively reduced, the cross coupling performance of the high-frequency array and the low-frequency array can be reduced, the two rows of radiating units are connected through the electric bridge, the size of the antenna can be reduced to the maximum extent, wind resistance is reduced, construction and installation are facilitated, and production cost is reduced.)

1. The utility model provides a four low frequency multiport base station antennas of miniaturization, includes reflecting plate, radiating element and electric bridge, its characterized in that: the reflecting plate is provided with a first radiation array, a second radiation array, a third radiation array and a fourth radiation array,

the first radiation array, the second radiation array, the third radiation array and the fourth radiation array are all composed of a plurality of radiation units, the radiation units in the same radiation array are coaxially arranged at equal intervals, the interval H1 is 0.68-0.73 lambda, wherein lambda is the central frequency wavelength of the working frequency band, the radiation units are connected through an electric bridge,

the first radiation array and the second radiation array are arranged side by side, the distance H2 between the first radiation array and the second radiation array is 0.44-0.46 lambda,

the third radiation array and the fourth radiation array are arranged side by side, the distance between the third radiation array and the fourth radiation array is H2,

the second radiation array and the third radiation array are arranged in a staggered and side-by-side mode, the distance H3 between the second radiation array and the third radiation array is 0.45-0.47 lambda,

the working frequency band of the radiation unit is 690-960 MHz.

2. A miniaturized four low frequency multi-port base station antenna according to claim 1, characterized in that: an isolation boundary is also included that reduces interference between adjacent radiating arrays.

3. A miniaturized four low frequency multi-port base station antenna according to claim 2, characterized in that: and isolation boundaries along the placing direction of the radiation units are arranged on two sides of the reflecting plate.

4. A miniaturized four low frequency multi-port base station antenna according to claim 1, characterized in that: the radiating element is a PCB square oscillator, and the size of a radiating surface is smaller than 1/3 lambda.

5. A miniaturized four low frequency multi-port base station antenna according to claim 1, characterized in that: the adjacent radiation units in the first radiation array and the adjacent radiation units in the second radiation array are connected through a bridge.

6. A miniaturized four low frequency multi-port base station antenna according to claim 1, characterized in that: the adjacent radiation units in the third radiation array and the adjacent radiation units in the fourth radiation array are connected through a bridge.

7. A miniaturized four low frequency multi-port base station antenna according to claim 1, characterized in that: the second radiating array is arranged side by side with the third radiating array offset H1/2.

8. A miniaturized four low frequency multi-port base station antenna according to claim 2 or 3, characterized in that: the height H4 of the isolation boundary is 40-50 mm.

Technical Field

The invention belongs to the technical field of base station antennas, and particularly relates to a miniaturized four-low-frequency multi-port base station antenna.

Background

With the deep construction of the LTE network, operators have made higher demands on mobile signal coverage. Since the communication network in China is relatively complex, a situation that a plurality of communication application standards coexist can be foreseen in the future. At present, for mobile network signal coverage in scenes such as venues, high-speed rail stations, and dense building areas, an operator needs to face not only the challenge of increasing network capacity demand, but also the problem of high operation cost in an environment where multiple network systems such as 2G, 3G, 4G, and 5G coexist.

At present, with the development of mobile communication, the resources of frequency spectrum are more and more tense, the industry and the telecommunication department opens the frequency spectrum, 700MHz is divided into radio and television, but most base station antennas in the market cannot support the 700MHz frequency band. Under the condition that iron tower resources are limited, a multiport ultra-wideband base station antenna is urgently needed to meet market demands. The performance of the base station antenna directly affects the quality of the whole communication system as the main component of mobile communication, and the lower the frequency band, the larger the size of the base station antenna, the weight of the base station antenna is increased, and the antenna installation is more difficult.

Under the background, the invention provides a miniaturized four-low-frequency multi-port base station antenna in order to meet the market demand and solve the problems that the lower frequency band, the larger the base station antenna size, the larger the weight and the more difficult the antenna installation.

Disclosure of Invention

In order to solve the problems that the size of a base station antenna with lower frequency band is larger, the weight is increased along with the larger base station antenna, and the antenna is more difficult to install, the invention discloses a miniaturized four-low-frequency multi-port base station antenna.

In order to achieve the purpose, the invention adopts the following technical scheme:

a miniaturized four-low-frequency multiport base station antenna comprises a reflecting plate, a radiating unit and an electric bridge, wherein a first radiating array, a second radiating array, a third radiating array and a fourth radiating array are arranged on the reflecting plate,

the first radiation array, the second radiation array, the third radiation array and the fourth radiation array are all composed of a plurality of radiation units, the radiation units in the same radiation array are coaxially arranged at equal intervals, the interval H1 is 0.68-0.73 lambda, wherein lambda is the central frequency wavelength of the working frequency band, the radiation units are connected through an electric bridge,

the first radiation array and the second radiation array are arranged side by side, the distance H2 between the first radiation array and the second radiation array is 0.44-0.46 lambda,

the third radiation array and the fourth radiation array are arranged side by side, the distance between the third radiation array and the fourth radiation array is H2,

the second radiation array and the third radiation array are arranged in a staggered and side-by-side mode, the distance H3 between the second radiation array and the third radiation array is 0.45-0.47 lambda,

the working frequency band of the radiation unit is 690-960 MHz.

Preferably, an isolation boundary is included to reduce interference between adjacent radiating arrays.

Preferably, both sides of the reflection plate are provided with isolation boundaries along the placement direction of the radiation units.

Preferably, the radiating element is a PCB square oscillator, and the radiating surface size is smaller than 1/3 λ.

Preferably, the adjacent radiation elements in the first radiation array and the adjacent radiation elements in the second radiation array are connected by a bridge.

Preferably, the adjacent radiation elements in the third radiation array and the adjacent radiation elements in the fourth radiation array are connected by a bridge.

Preferably, the second radiating array is positioned side-by-side with the third radiating array offset H1/2.

Preferably, the height H4 of the isolation boundary is 40-50 mm.

The invention has the following beneficial effects:

(1) according to the miniaturized four-low-frequency multi-port base station antenna, the size of the antenna is greatly reduced, the miniaturized and economical design trend is met, the manufacturing cost of the antenna is reduced, the frequency spectrum utilization rate of the antenna is improved, meanwhile, the antenna has good directional diagram coverage performance, the coverage range of mobile communication signals in outdoor environment is met, the antenna is suitable for the development trend of the antenna industry, and the requirements of the future market are met;

(2) according to the miniaturized four-low-frequency multi-port base station antenna, the small-size radiation unit is used, the width of the antenna is maximally reduced on the premise that radiation indexes are not reduced, the weight of the base station antenna can be effectively reduced by using the PCB radiation unit, the installation is convenient, the transportation cost is reduced, and the gain of a radiation array can be increased while the horizontal beam width is converged by adding the electric bridge;

(3) the invention discloses a miniaturized four-low-frequency multi-port base station antenna, which is an eight-port base station antenna with 690-960MHz full-port working frequency band in the first section in the market.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a schematic diagram of a bridge configuration of the present invention

FIG. 5 is a 690MHz band horizontal plane pattern of a base station antenna of the present invention;

FIG. 6 is a horizontal plane directional diagram of a 703MHz band of a base station antenna according to the present invention;

FIG. 7 is a 750MHz band horizontal plane pattern of a base station antenna of the present invention;

FIG. 8 is a 790MHz band horizontal plane pattern of a base station antenna of the present invention;

FIG. 9 is a base station antenna 820MHz band horizontal plane pattern of the present invention;

FIG. 10 is a horizontal plane pattern of 880MHz band of a base station antenna of the present invention;

FIG. 11 is a 920MHz band horizontal plane pattern of a base station antenna of the present invention;

FIG. 12 is a 960MHz band horizontal plane pattern of a base station antenna of the present invention;

in the figure: the radiation array comprises a reflector plate 1, an isolation boundary 2, a radiation unit 3, an electric bridge 4, a first radiation array 5, a second radiation array 6, a third radiation array 7 and a fourth radiation array 8.

Detailed Description

The present invention will now be described in further detail with reference to examples.

A miniaturized four-low-frequency multiport base station antenna is disclosed, as shown in FIG. 1-FIG. 3, a miniaturized four-low-frequency multiport base station antenna comprises a reflection plate 1, a radiation unit 3 and a bridge 4, wherein the reflection plate 1 is provided with a first radiation array 5, a second radiation array 6, a third radiation array 7 and a fourth radiation array 8, the first radiation array 5, the second radiation array 6, the third radiation array 7 and the fourth radiation array 8 are all composed of a plurality of radiation units 3, the radiation units 3 in the same radiation array are coaxially arranged at equal intervals, the interval H1 is 0.68-0.73 lambda, wherein lambda is the central frequency wavelength of an operating frequency band, the radiation units 3 are connected through the bridge 4, the first radiation array 5 and the second radiation array 6 are arranged side by side, the interval H2 of the first radiation array 5 and the second radiation array 6 is 0.44-0.46 lambda, the third radiation array 7 and the fourth radiation array 8 are arranged side by side, the distance between the third radiation array 7 and the fourth radiation array 8 is H2, the second radiation array 6 and the third radiation array 7 are disposed in parallel and staggered, the distance H3 between the second radiation array 6 and the third radiation array 7 is 0.45-0.47 λ, and the working frequency band of the radiation unit 3 is 690-960 MHz.

Wherein, the distance H1 is 0.68-0.73 lambda, the distance H2 is 0.44-0.46 lambda, and the distance H3 is 0.45-0.47 lambda, which can effectively ensure the radiation array to have good inhibition in the working frequency band of 690-960 MHz.

In this embodiment, the second radiating array 6 is positioned side-by-side with the third radiating array 7 offset by H1/2.

In this embodiment, the radiating element 3 is a PCB square oscillator, and the radiating surface size is smaller than 1/3 λ.

In a specific embodiment, the radiation unit further comprises an isolation boundary 2 for reducing interference between adjacent radiation arrays, and the two sides of the reflecting plate 1 are provided with the isolation boundaries 2 along the placement direction of the radiation units 3.

The isolation boundary 2 can reduce the interference between the two arrays and reduce the boundary effect and the coupling effect between the systems.

In one embodiment, the adjacent radiating elements 3 in the first radiating array 5 and the adjacent radiating elements 3 in the second radiating array 6 are connected by a bridge 4, and the adjacent radiating elements 3 in the third radiating array 7 and the adjacent radiating elements 3 in the fourth radiating array 8 are connected by a bridge 4. The connection mode is as shown in fig. 4, the first radiation element 3 of the first column of radiation array 5 is connected to B1, and the first radiation element 3 of the second column of radiation array 6 is connected to a 1; similarly, the third radiation array 7 and the fourth radiation array 8 and the longitudinal radiation unit 3 can also be connected through the bridge 4 in the above manner, if the number of the radiation array units is N, the number of the radiation unit connection bridges is between N/3 and N/2, and the actual connection number is an integer.

It can be seen from fig. 5-12 that, under the condition of smaller column spacing, the horizontal wave width still has good convergence, no obvious deformity, and the important radiation performances such as front-to-back ratio, gain and the like are also good. The antenna in the embodiment of the invention has better radiation performance in each frequency band, and is an ideal base station antenna solution with higher practical value.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.