Dual-frequency dual-polarization omnidirectional antenna

Abstract

The invention is applicable to the technical field of antennas, and provides a dual-frequency dual-polarization omnidirectional antenna, which comprises a first omnidirectional array, a second omnidirectional array and a cylinder, the first omnidirectional array and the second omnidirectional array are arranged on the surface of the cylinder in a staggered manner, the first omnidirectional array comprises a first horizontal array and a first vertical array, and the second omnidirectional array comprises a second horizontal array and a second vertical array. Five first horizontal arrays which are arranged at equal intervals are arranged in the horizontal direction of the cylinder, at least five first vertical arrays which are arranged at equal intervals are arranged in the vertical direction of the cylinder, and each first horizontal array and each first vertical array are connected through a first power divider. The second omnidirectional array comprises second horizontal arrays and second vertical arrays, five second horizontal arrays are arranged in the horizontal direction of the cylinder at equal intervals, and at least five second vertical arrays are arranged in the vertical direction of the cylinder at equal intervals. And each second horizontal oscillator is connected with each second vertical oscillator through a second power divider. Therefore, the space utilization rate of the antenna is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of antennas, and particularly to a dual-band dual-polarization omnidirectional antenna. Background Art

[0002] With the rapid development of mobile communication and mobile data services, indoor call services and data traffic are growing rapidly in many countries and regions. Indoor signal coverage plays a crucial role in communication systems. In order to meet the development of indoor signal coverage systems, in recent years, with the development of communication systems, many time-division antennas have been developed, mainly to improve their frequency bandwidth, size and other indicators, and gradually develop from linear single polarization to linear dual polarization.

[0003] With the popularization of antenna technology and the development needs of data services, operators tend to use dual-polarization omnidirectional antennas more, and put forward indicators such as small size, wide frequency band, and high isolation for dual-polarization omnidirectional antennas. At present, dual-polarization omnidirectional antennas mainly use dual-polarization omnidirectional antennas implemented by ±45° polarization composition. However, the current dual-polarization antenna has a large structural size and low space utilization rate.

[0004] In summary, it is obvious that there are inconveniences and defects in the prior art in actual use, so it is necessary to improve. Summary of the Invention

[0005] Aiming at the above defects, the purpose of the present invention is to provide a dual-band dual-polarization omnidirectional antenna, which realizes the improvement of the space utilization rate of the antenna.

[0006] To achieve the above purpose, the present invention provides a dual-band dual-polarization omnidirectional antenna, including a first omnidirectional array, a second omnidirectional array and a cylinder. The first omnidirectional array and the second omnidirectional array are arranged on the surface of the cylinder in a staggered manner. The first omnidirectional array includes a first horizontal dipole and a first vertical dipole. Five of the first horizontal dipoles are arranged at equal intervals in a horizontal direction of the cylinder. The cylinder is provided with five columns of the first vertical dipoles in the vertical direction. At least five of the first vertical dipoles are arranged at equal intervals in each column of the vertical direction of the cylinder. Each of the first horizontal dipoles and each of the first vertical dipoles are connected by a first power divider. The second omnidirectional array includes a second horizontal dipole and a second vertical dipole. Five of the second horizontal dipoles are arranged at equal intervals in a horizontal direction of the cylinder. The cylinder is provided with five columns of the second vertical dipoles in the vertical direction. At least five of the second vertical dipoles are arranged at equal intervals in each column of the vertical direction of the cylinder. Each of the second horizontal dipoles and each of the second vertical dipoles are connected by a second power divider. The first horizontal dipole and the second horizontal dipole are arranged on the surface of the cylinder in a staggered manner. The first vertical dipole and the second vertical dipole are arranged on the surface of the cylinder in a staggered manner.

[0007] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, the spacing between two adjacent ones of the five first horizontal dipoles is an angle of 72 degrees, and the spacing between two adjacent ones of the five second horizontal dipoles is an angle of 72 degrees.

[0008] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, a first plastic part is respectively connected between each first horizontal dipole, each first vertical dipole and the cylinder.

[0009] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, a second plastic part is respectively connected between each second horizontal dipole, each second vertical dipole and the cylinder.

[0010] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, the first horizontal dipole includes a first horizontal radiation surface and a first horizontal balun, and the first horizontal radiation surface is arranged above the first horizontal balun;

[0011] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, the first vertical radiation surface is arranged above the first vertical balun.

[0012] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, the second horizontal dipole includes a second horizontal radiation surface and a second horizontal balun, and the second horizontal radiation surface is arranged above the second horizontal balun;

[0013] The second vertical dipole includes a second vertical radiation surface and a second vertical balun, and the second vertical radiation surface is arranged above the second vertical balun.

[0014] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, the first power divider is provided with a first microstrip line, and the first horizontal balun and the first vertical balun are respectively connected to the first microstrip line of the first power divider;

[0015] The second power divider is provided with a second microstrip line, and the second horizontal balun and the second vertical balun are respectively connected to the second microstrip line of the second power divider.

[0016] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, the first power divider is a one - to - five first power divider, and the second power divider is a one - to - five second power divider.

[0017] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, the operating frequency band of the antenna is 2 * 690 - 960 MHz.

[0018] For the dual - band and dual - polarization omnidirectional antenna according to the present invention, the diameter range of the cylinder is 450 cm - 500 cm.

[0019] The present invention relates to a dual-band and dual-polarization omnidirectional antenna, which includes a first omnidirectional array, a second omnidirectional array and a cylinder. The first omnidirectional array and the second omnidirectional array are arranged offset on the surface of the cylinder. The first omnidirectional array includes five first horizontal dipoles arranged at an angular interval of 72 degrees in a horizontal direction of the cylinder and first vertical dipoles in five vertical columns of the cylinder. At least five first vertical dipoles are arranged at equal intervals in each vertical column of the cylinder. A first power divider connects each first horizontal dipole and each first vertical dipole to form the first omnidirectional array. The first omnidirectional array formed by the first horizontal dipoles and the first vertical dipoles is a first matrix of five rows and five columns. The second omnidirectional array includes five second horizontal dipoles arranged at an angular interval of 72 degrees in a horizontal direction of the cylinder and second vertical dipoles in five vertical columns of the cylinder. At least five second vertical dipoles are arranged at equal intervals in each vertical column of the cylinder. A second power divider connects each second horizontal dipole and each second vertical dipole to form the second omnidirectional array. The second omnidirectional array formed by the second horizontal dipoles and the second vertical dipoles is a second matrix of five rows and five columns. The first omnidirectional array and the second omnidirectional array act on two working frequency bands respectively, realizing dual-band and dual-polarization omnidirectionality in a small space. Thereby, the dual-band and dual-polarization omnidirectional antenna of the present invention improves the space utilization rate of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view structural schematic diagram of the dual-band and dual-polarization omnidirectional antenna provided by the present invention;

[0021] Figure 2 is a top view structural schematic diagram of the dual-band and dual-polarization omnidirectional antenna provided by the present invention;

[0022] Figure 3 is the radiation pattern of the dual-band and dual-polarization omnidirectional antenna provided by the present invention in the horizontal and vertical planes. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] As Figures 1 - 2As shown in the figure, the present invention provides a dual-band dual-polarization omnidirectional antenna 100, which includes a first omnidirectional array 1, a second omnidirectional array 2, and a cylinder 3. The first omnidirectional array 1 and the second omnidirectional array 2 are arranged offset on the surface of the cylinder 3. The first omnidirectional array 1 includes a first horizontal dipole 11 and a first vertical dipole 12. Five of the first horizontal dipoles 11 are arranged at equal intervals in a horizontal direction of the cylinder 3. The distance between two adjacent ones of the five first horizontal dipoles 11 is an angle of 72 degrees. The cylinder 3 is provided with five columns of the first vertical dipoles 12 in the vertical direction. At least five of the first vertical dipoles 12 are arranged at equal intervals in each column in the vertical direction of the cylinder 3. The first omnidirectional array 1 formed by the first horizontal dipole 11 and the first vertical dipole 12 is a first matrix of five rows and five columns, that is, the first omnidirectional array 1 has a total of 25 dipoles. Of course, the number of the first vertical dipoles 12 in each column in the vertical direction of the cylinder 3 can be 5 to 10, and the number of the first vertical dipoles 12 in each column is set according to the requirements of different scenarios. Each of the first horizontal dipoles 11 and each of the first vertical dipoles 12 are connected by a first power divider; the second omnidirectional array 2 includes a second horizontal dipole 21 and a second vertical dipole 22. Five of the second horizontal dipoles 21 are arranged at equal intervals in a horizontal direction of the cylinder 3. The distance between two adjacent ones of the five second horizontal dipoles 21 is an angle of 72 degrees. The cylinder 3 is provided with five columns of the second vertical dipoles 22 in the vertical direction. At least five of the second vertical dipoles 22 are arranged at equal intervals in each column in the vertical direction of the cylinder 3. The second omnidirectional array 2 formed by the second horizontal dipole 21 and the second vertical dipole 22 is a second matrix of five rows and five columns, that is, the second omnidirectional array 2 has a total of 25 dipoles. Of course, the number of the second vertical dipoles 22 in each column in the vertical direction of the cylinder 3 can be 5 to 10, and the number of the second vertical dipoles 22 in each column is set according to the requirements of different scenarios. Each of the second horizontal dipoles 21 and each of the second vertical dipoles 22 are connected by a second power divider. The first horizontal dipole 11 and the second horizontal dipole 21 are arranged offset on the surface of the cylinder 3. The first vertical dipole 12 and the second vertical dipole 22 are arranged offset on the surface of the cylinder 3. The first omnidirectional array 1 and the second omnidirectional array 2 respectively act on two working frequency bands, and the two working frequency bands are also 2 * 690 - 960 MHz. The antenna 100 covers a 360-degree range, and the dual-band dual-polarization omnidirectionality of the antenna 100 is realized in a small space.

[0025] Thereby, the dual-band dual-polarization omnidirectional antenna 100 of the present invention realizes an improvement in the space utilization rate of the antenna.

[0026] Preferably, the spacing between two adjacent first horizontal dipoles 11 among the five first horizontal dipoles 11 is 72 degrees of angle. The five first horizontal dipoles 11 are evenly distributed on a horizontal plane of the cylinder 3, improving the working stability and coverage of the antenna 100. The spacing between two adjacent second horizontal dipoles 21 among the five second horizontal dipoles 21 is 72 degrees of angle. The five second horizontal dipoles 21 are evenly distributed on a horizontal plane of the cylinder 3, improving the working stability and coverage of the antenna 100.

[0027] Preferably, a first plastic part is respectively connected between each first horizontal dipole 11, each first vertical dipole 12 and the cylinder 3. The first plastic part fixes each first horizontal dipole 11 and each first vertical dipole 12 on the cylinder 3 respectively. The first plastic part supports each first horizontal dipole 11 and each first vertical dipole 12, and the structure of the antenna 100 is more stable.

[0028] Preferably, a second plastic part is respectively connected between each second horizontal dipole 21, each second vertical dipole 22 and the cylinder 3. The second plastic part fixes each second horizontal dipole 21 and each second vertical dipole 22 on the cylinder 3 respectively. The second plastic part supports each second horizontal dipole 21 and each second vertical dipole 22, and the structure of the antenna 100 is more stable.

[0029] Preferably, the first horizontal dipole 11 includes a first horizontal radiation surface and a first horizontal balun, and the first horizontal radiation surface is arranged above the first horizontal balun;

[0030] The first vertical dipole 12 includes a first vertical radiation surface and a first vertical balun, and the first vertical radiation surface is arranged above the first vertical balun.

[0031] Preferably, the second horizontal dipole 21 includes a second horizontal radiation surface and a second horizontal balun, and the second horizontal radiation surface is arranged above the second horizontal balun;

[0032] The second vertical dipole 22 includes a second vertical radiation surface and a second vertical balun, and the second vertical radiation surface is arranged above the second vertical balun.

[0033] Preferably, the first power divider is provided with a first microstrip line. The first horizontal balun and the first vertical balun are respectively connected to the first microstrip line of the first power divider. The first horizontal dipole 11 and the first vertical dipole 12 are respectively fed through the first microstrip line on the first power divider;

[0034] The second power divider is provided with a second microstrip line. The second horizontal balun and the second vertical balun are respectively connected to the second microstrip line of the second power divider. The second horizontal dipole 21 and the second vertical dipole 22 are respectively fed through the second microstrip line on the second power divider.

[0035] Preferably, the first power divider is a one - to - five first power divider, and the second power divider is a one - to - five second power divider. After the one - to - five first power divider is connected to the five first horizontal dipoles 11 on a horizontal plane of the cylinder 3, the one - to - five first power divider is then connected to each column of the first vertical dipoles 12. The five - row and five - column first matrix formed by each first horizontal dipole 11 and each first vertical dipole 12 constitutes the first omnidirectional array 1. After the one - to - five second power divider is connected to the five second horizontal dipoles 21 on a horizontal plane of the cylinder 3, the one - to - five second power divider is then connected to each column of the second vertical dipoles 22. The five - row and five - column second matrix formed by each second horizontal dipole 21 and each second vertical dipole 22 constitutes the second omnidirectional array 2. The first omnidirectional array 1 and the second omnidirectional array 2 respectively act on two operating frequency bands to achieve dual - band and dual - polarization omnidirectionality of the antenna 100.

[0036] Preferably, the operating frequency band of the antenna 100 is 2 * 690~960 MHz, that is, the operating frequency band of the antenna 100 is a double octave of 690~960 MHz. The first omnidirectional array 1 and the second omnidirectional array 2 respectively act on two operating frequency bands. The antenna 100 covers a 360 - degree range, achieving dual - band and dual - polarization omnidirectionality of the antenna 100.

[0037] Preferably, the diameter range of the cylinder 3 is 450 cm~500 cm, which occupies a small space and realizes the dual - band and dual - polarization omnidirectionality of the antenna 100 in a small space.

[0038] Figure 3 The radiation patterns of the antenna 100 in the horizontal and vertical planes are given. The non - circularity of the antenna 100 is less than 3°, and the gain of the antenna 100 is greater than 10 dB, meeting the requirement that the antenna 100 covers a 360 - degree range.

[0039] In summary, the present invention relates to a dual-band dual-polarization omnidirectional antenna, which includes a first omnidirectional array, a second omnidirectional array, and a cylinder. The first omnidirectional array and the second omnidirectional array are arranged offset on the surface of the cylinder. The first omnidirectional array includes five first horizontal dipoles arranged at 72-degree angular intervals in a horizontal direction of the cylinder and first vertical dipoles in five vertical columns of the cylinder. At least five first vertical dipoles are arranged at equal intervals in each vertical column of the cylinder. A first power divider connects each first horizontal dipole and each first vertical dipole to form the first omnidirectional array. The first omnidirectional array formed by the first horizontal dipoles and the first vertical dipoles is a first matrix of five rows and five columns. The second omnidirectional array includes five second horizontal dipoles arranged at 72-degree angular intervals in a horizontal direction of the cylinder and second vertical dipoles in five vertical columns of the cylinder. At least five second vertical dipoles are arranged at equal intervals in each vertical column of the cylinder. A second power divider connects each second horizontal dipole and each second vertical dipole to form the second omnidirectional array. The second omnidirectional array formed by the second horizontal dipoles and the second vertical dipoles is a second matrix of five rows and five columns. The first omnidirectional array and the second omnidirectional array act on two working frequency bands respectively, realizing dual-band dual-polarization omnidirectionality in a small space. Thereby, the dual-band dual-polarization omnidirectional antenna of the present invention improves the space utilization rate of the antenna.

[0040] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A dual-frequency dual-polarization omnidirectional antenna, characterized in that: The invention comprises a first omnidirectional array, a second omnidirectional array and a cylinder, wherein the first omnidirectional array and the second omnidirectional array are staggered on the surface of the cylinder, the first omnidirectional array comprises a first horizontal array and a first vertical array, five first horizontal arrays are arranged at equal intervals in a horizontal direction of the cylinder, the cylinder is provided with five columns of the first vertical arrays in a vertical direction, at least five first vertical arrays are arranged at equal intervals in each column of the cylinder in the vertical direction, each of the first horizontal arrays and each of the first vertical arrays are connected by a first power divider, the second omnidirectional array comprises a second horizontal array and a second vertical array, five second horizontal arrays are arranged at equal intervals in a horizontal direction of the cylinder, the cylinder is provided with five columns of the second vertical arrays in a vertical direction, at least five second vertical arrays are arranged at equal intervals in each column of the cylinder in the vertical direction, each of the second horizontal arrays and each of the second vertical arrays are connected by a second power divider, the first horizontal array and the second horizontal array are staggered on the surface of the cylinder, and the first vertical array and the second vertical array are staggered on the surface of the cylinder.

2. The dual-frequency dual-polarization omnidirectional antenna according to claim 1, characterized in that: The distance between two adjacent first horizontal arrays in the five first horizontal arrays is 72 degrees, and the distance between two adjacent second horizontal arrays in the five second horizontal arrays is 72 degrees.

3. The dual-frequency dual-polarization omnidirectional antenna according to claim 1, characterized in that: A first plastic part is respectively connected between each of the first horizontal arrays, each of the first vertical arrays and the cylinder.

4. The dual-frequency dual-polarization omnidirectional antenna according to claim 1, characterized in that: A second plastic piece is connected between each of the second horizontal arrays, each of the second vertical arrays and the cylinder respectively.

5. The dual-frequency dual-polarization omnidirectional antenna according to claim 1, characterized in that: The first horizontal array includes a first horizontal radiation surface and a first horizontal balun, wherein the first horizontal radiation surface is arranged above the first horizontal balun; The first vertical array includes a first vertical radiation surface and a first vertical balun, and the first vertical radiation surface is arranged above the first vertical balun.

6. The dual-frequency dual-polarization omnidirectional antenna according to claim 5, characterized in that: The second horizontal array includes a second horizontal radiation surface and a second horizontal balun, and the second horizontal radiation surface is arranged above the second horizontal balun; The second vertical array includes a second vertical radiation surface and a second vertical balun, and the second vertical radiation surface is arranged above the second vertical balun.

7. The dual-frequency dual-polarization omnidirectional antenna according to claim 6, characterized in that: The first power divider is provided with a first microstrip line, and the first horizontal balun and the first vertical balun are respectively connected to the first microstrip line of the first power divider; The second power divider is provided with a second microstrip line, and the second horizontal balun and the second vertical balun are respectively connected to the second microstrip line of the second power divider.

8. The dual-frequency dual-polarization omnidirectional antenna according to claim 1, characterized in that: The first power divider is a one-to-five first power divider, and the second power divider is a one-to-five second power divider.

9. The dual-frequency dual-polarization omnidirectional antenna according to claim 1, characterized in that: The working frequency band of the antenna is 2*690~960MHz.

10. The dual-frequency dual-polarization omnidirectional antenna according to any one of claims 1 to 9, characterized in that: The diameter of the cylinder ranges from 450 cm to 500 cm.

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