Dual-polarized array antenna with adjustable directional diagram

Abstract

The utility model discloses a dual-polarized array antenna with an adjustable directional diagram. The dual-polarized array antenna comprises a reflecting plate, four dual-polarized antenna arrays and two one-to-four power dividers arranged on the reflecting plate, the dual-polarized antenna array comprises a substrate, a first polarized antenna and a second polarized antenna, wherein the first polarized antenna and the second polarized antenna are attached to two surfaces of the substrate; each of the first polarized antenna and the second polarized antenna comprises two centrosymmetric radiation arms and a coupling feed probe. Four output ports on each one-to-four power divider are respectively connected with four input ports (coupling feed probes) of four dual-polarized antenna arrays. In this way, the distances among the four dual-polarized antenna arrays can be changed, and different directional diagrams can be generated by different distances, so that the directional diagrams of the antenna can be regulated and controlled through flexible arrangement of the four dual-polarized antenna arrays.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna technical field especially relates to a directional diagram adjustable and controlled dual polarization array antenna. BACKGROUND

[0002] With the rapid development of information and communication field, the requirement of vehicle-mounted interconnection, intelligent house, consumer terminal to communication quality is higher and higher, and in wireless system, antenna is indispensable, miniaturization, high gain become the new requirement of antenna in 5G era. Because high gain antenna can greatly improve the communication distance in wireless system, the effect is very obvious. Therefore, the development trend of current antenna is high gain, how to realize the high gain of antenna is the problem that perplexes the development of antenna.

[0003] Therefore, the prior art has defects and needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a directional diagram adjustable and controlled dual polarization array antenna, realizes the high gain of antenna.

[0005] The utility model discloses a directional diagram adjustable and controlled dual polarization array antenna, including: the reflector, four dual polarization antenna array, set up two one four power divider on the reflector, the dual polarization antenna array includes: the substrate, the first polarization antenna, the second polarization antenna that adhere to the two faces of substrate, the first polarization antenna, second polarization antenna all include two center symmetry's radiation arm and a coupling feed probe, through the size of adjusting coupling feed probe size to adjust the capacitance between coupling feed probe and radiation arm, the signal of coupling feed probe is coupled on the radiation arm through the capacitance, then radiates energy through the radiation arm, the radiation arm and coupling feed probe of first polarization antenna, second polarization antenna are set up on the two faces of substrate respectively, and the coupling feed probe of first polarization antenna is set up between the two radiation arms of second polarization antenna, and the coupling feed probe of second polarization antenna is set up between the two radiation arms of first polarization antenna, one one four power divider is connected with the coupling feed probe of four first polarization antennas (generally adopts the coaxial line) electricity respectively, and another one four power divider is connected with the coupling feed probe of four second polarization antennas (generally adopts the coaxial line) electricity respectively. In the scheme, and the radiation arm and coupling feed probe in same polarization antenna are set up on the two faces of substrate respectively, coupling feed probe does not carry out direct connection with radiation arm, and feeds through the coupling feed mode. And the spacing between four dual polarization antenna array can change, and different spacing can produce different directional diagram, so that the directional diagram of antenna can be adjusted through the flexible arrangement of four dual polarization antenna array.

[0006] Further, the radiation arms are hollow right-angled triangles, and the non-right angles of two radiation arms on the same surface of the substrate are opposite.

[0007] Further, the hollow right-angled triangle is an isosceles triangle.

[0008] Further, the two radiation arms of the first polarized antenna are axially symmetrical to the two radiation arms of the second polarized antenna when the two radiation arms of the first polarized antenna are projected onto the surface of the two radiation arms of the second polarized antenna.

[0009] Further, the coupling feeding probe of the first polarized antenna is arranged on the back surface of one radiation arm of the first polarized antenna, and the coupling feeding probe of the second polarized antenna is arranged on the back surface of one radiation arm of the second polarized antenna.

[0010] Further, the coupling feeding probe of the first polarized antenna is perpendicular to and axially symmetrical to the coupling feeding probe of the second polarized antenna.

[0011] Further, the directions of all the dual-polarized antenna array elements are the same.

[0012] Further, the distance between the dual-polarized antenna array elements and the reflector is 1 / 6 wavelength-1 / 3 wavelength, preferably 1 / 5-1 / 4 wavelength.

[0013] With the above scheme, the utility model provides a kind of dual-polarized array antenna with adjustable directional diagram, four dual-polarized antenna array elements form an antenna array, the direction of four dual-polarized antenna array elements is completely identical, energy is divided into 4 by one-to-four power divider, is respectively linked on each direction consistent dual-polarized antenna array element by coaxial line, and high gain antenna is formed.Every one-to-four power divider is respectively connected four input ports (coupling feeding probe) of four dual-polarized antenna array elements by four output ports.This can make the spacing between four dual-polarized antenna array elements can be changed, and different spacings can produce different directional diagram, so that the directional diagram of antenna can be adjusted by the flexible arrangement of four dual-polarized antenna array elements. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is the structural schematic diagram of reflector and two one-to-four power dividers on reflector;

[0016] Figure 3 It is the front view of dual-polarized antenna array element;

[0017] Figure 4 It is the back view of dual-polarized antenna array element;

[0018] Figure 5 Gain pattern of an antenna composed of different spaced-apart dual-polarized antenna elements. DETAILED DESCRIPTION

[0019] The utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0020] Please refer to Figures 1-4 The utility model provides a direction diagram adjustable dual polarized array antenna, include: the reflector plate 10, four dual polarized antenna elements 20, two one four power dividers 11 set up on the reflector plate 10, the dual polarized antenna element 20 includes: substrate 12, the first polarized antenna, second polarized antenna composition attached on two faces of substrate 12, the first polarized antenna, second polarized antenna all include two center symmetry's radiation arm 13 and a coupling feed probe 14, through adjusting the size of coupling feed probe 14 to adjust the capacitance between coupling feed probe 14 and radiation arm 13, the signal of coupling feed probe 14 is coupled on radiation arm 13 through capacitance, then radiates energy through radiation arm 13, the radiation arm 13 and coupling feed probe 14 of first polarized antenna, second polarized antenna are set up on two faces of substrate 12 respectively, and the coupling feed probe 14 of first polarized antenna is set up between two radiation arms 13 of second polarized antenna, and the coupling feed probe 14 of second polarized antenna is set up between two radiation arms 13 of first polarized antenna, one one four power dividers are electrically connected (generally adopt coaxial line) with the coupling feed probe 14 of four first polarized antennas respectively, and another one four power dividers are electrically connected (generally adopt coaxial line) with the coupling feed probe 14 of four second polarized antennas respectively.

[0021] In the embodiment, the radiation arm 13 is a hollow right triangle, and the non-right angles of the two radiation arms 13 on the same face of the substrate 12 are opposite.

[0022] In the embodiment, the hollow right triangle is an isosceles triangle.

[0023] In the embodiment, when the two radiation arms 13 of the first polarized antenna are projected onto the faces of the two radiation arms 13 of the second polarized antenna, the two radiation arms 13 of the first polarized antenna are axially symmetrical with the two radiation arms 13 of the second polarized antenna.

[0024] In the embodiment, the coupling feed probe 14 of the first polarized antenna is arranged on the back face of one radiation arm 13 of the first polarized antenna, and the coupling feed probe 14 of the second polarized antenna is arranged on the back face of one radiation arm 13 of the second polarized antenna.

[0025] In the embodiment, the coupling feed probe 14 of the first polarized antenna is perpendicular to and axially symmetrical with the coupling feed probe 14 of the second polarized antenna.

[0026] In the embodiment, the directions of the four dual-polarized antenna arrays are the same.

[0027] The distance between the dual-polarized antenna arrays and the reflecting plate 10 is 1 / 6 wavelength-1 / 3 wavelength, preferably 1 / 5-1 / 4 wavelength.

[0028] As shown in FIG. 2, the four dual-polarized antenna arrays are arranged in a square shape. Figure 5 As the distance between the dual-polarized antenna arrays is from 30mm to 50mm, the gain is increased from 10dBi to 14.5dBi, and the 3dB beam width is from 36 degrees to 60 degrees. Therefore, when a large radiation angle is required, the distance between the dual-polarized antenna arrays can be reduced accordingly, and when a large gain is required, the distance between the dual-polarized antenna arrays can be increased accordingly.

[0029] In summary, the dual-polarized array antenna with adjustable directional diagram provided by the present application comprises four dual-polarized antenna arrays, which are combined into one antenna array, and the directions of the four dual-polarized antenna arrays are the same. The energy is divided into four parts by a 1:4 power divider, and the four parts of energy are respectively linked to the four dual-polarized antenna arrays with the same direction through coaxial lines, thereby forming a high-gain antenna. The four output ports of each 1:4 power divider are respectively connected to the four input ports (coupling feeding probes) of the four dual-polarized antenna arrays. In this way, the distance between the four dual-polarized antenna arrays can be changed, and different distances will produce different directional diagrams. Therefore, the directional diagram of the antenna can be adjusted by flexibly arranging the four dual-polarized antenna arrays.

[0030] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dual-polarized array antenna with steerable directional patterns, characterized in that, The application relates to a dual-polarized antenna array. The dual-polarized antenna array comprises a substrate, a first polarized antenna and a second polarized antenna attached to two surfaces of the substrate. The first polarized antenna and the second polarized antenna each comprise two center-symmetrical radiation arms and a coupling feeding probe; the size of the coupling feeding probe is adjusted to adjust the capacitance between the coupling feeding probe and the radiation arms, the signal of the coupling feeding probe is coupled on the radiation arms through the capacitance, and then the energy is radiated through the radiation arms; the radiation arms and the coupling feeding probe of the first polarized antenna and the second polarized antenna are arranged on the two surfaces of the substrate respectively, the coupling feeding probe of the first polarized antenna is arranged between the two radiation arms of the second polarized antenna, and the coupling feeding probe of the second polarized antenna is arranged between the two radiation arms of the first polarized antenna; one of the one-to-four power dividers is electrically connected with the coupling feeding probes of the four first polarized antennas respectively, and the other one-to-four power divider is electrically connected with the coupling feeding probes of the four second polarized antennas respectively. The radiation arms are hollow right-angled triangles, and the non-right angles of the two radiation arms on the same surface of the substrate are opposite.

2. The dual-polarized array antenna with steerable patterns of claim 1, wherein, The hollow right-angled triangle is an isosceles triangle.

3. The dual-polarized array antenna with steerable patterns of claim 2, wherein, When the two radiation arms of the first polarized antenna are projected onto the two radiation arms of the second polarized antenna, the two radiation arms of the first polarized antenna are axially symmetrical with the two radiation arms of the second polarized antenna.

4. The dual-polarized array antenna with steerable patterns of claim 1, wherein, The coupling feeding probe of the first polarized antenna is arranged on the back surface of one radiation arm of the first polarized antenna.

5. The dual-polarized array antenna with steerable patterns of claim 1, wherein, The coupling feeding probe of the second polarized antenna is arranged on the back surface of one radiation arm of the second polarized antenna. The coupling feeding probe of the first polarized antenna is perpendicular to the coupling feeding probe of the second polarized antenna and axially symmetrical.

6. The dual-polarized array antenna with steerable patterns of claim 5, wherein, The directions of all the dual-polarized antenna arrays are the same.

7. The dual-polarized array antenna with steerable patterns of claim 1, wherein, The distance between the dual-polarized antenna arrays is 1 / 6 wavelength-1 / 3 wavelength.

8. The dual-polarized array antenna with steerable patterns of claim 1, wherein, ​

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