Single-beam dual-circular-polarization extensible antenna

Abstract

The utility model discloses a single-beam dual-circular-polarization extensible antenna, which comprises an antenna sub-array, the antenna sub-array comprises 16 antenna units and 4 multifunctional chips, the 16 antenna units are distributed in an array to form a 4 * 4 array element, the four multifunctional chips comprise two first chips used for controlling left-hand circular polarization / right-hand circular polarization work and two second chips used for controlling right-hand circular polarization / left-hand circular polarization work. Wherein one first chip is electrically connected with the eight antenna units respectively, and the other first chip is electrically connected with the other eight antenna units respectively; wherein one second chip is electrically connected with the eight antenna units respectively, and the other second chip is electrically connected with the other eight antenna units respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a single-beam dual-circular polarization expandable antenna. Background Art

[0002] When Anokiwave's AWMF-0197 multifunctional chip is used in the K-band satellite communication receiving phased array antenna, the antenna and R component are designed in an integrated manner. The traditional method generally adopts the whole array design. Taking the 1344 antenna array as an example, there are 1344 antenna units and 336 multifunctional chips. The plan view is as shown in the attached manual. Figure 1 As shown, the 1344 antenna array is a dual-feed circular polarization form, each multifunctional chip has 8 channels to feed four antenna units, and when the antenna array performs left or right circular polarization, all multifunctional chips are in working state, and the power consumption is large; and as shown in the attached manual Figure 2 As shown, since the antenna unit and the multifunctional chip are fed by direct feeding, it is necessary to switch between left-hand and right-hand circular polarization working modes by controlling the phase difference of the two feeding channels of the multifunctional chip, which is not reliable and fast enough. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a single-beam dual circular polarization expandable antenna with reduced power consumption and more reliable and convenient control.

[0004] According to the single-beam dual circular polarization expandable antenna of the embodiment of the utility model, the antenna subarray includes 16 antenna units and 4 multifunctional chips, the 16 antenna units are arrayed to form a 4x4 array element, the 4 multifunctional chips include 2 first chips for controlling left-hand circular polarization / right-hand circular polarization and 2 second chips for controlling right-hand circular polarization / left-hand circular polarization; one of the first chips is electrically connected to 8 of the antenna units, and another of the first chips is electrically connected to the remaining 8 of the antenna units; one of the second chips is electrically connected to 8 of the antenna units, and another of the second chips is electrically connected to the remaining 8 of the antenna units.

[0005] According to some embodiments of the present invention, one of the first chips is arranged between the first two rows of antenna units of the 4x4 array element and is electrically connected to the first two rows of antenna units, respectively, and another of the first chips is arranged between the last two rows of antenna units of the 4x4 array element and is electrically connected to the last two rows of antenna units, respectively; one of the second chips is arranged between the first two columns of antenna units of the 4x4 array element and is electrically connected to the first two columns of antenna units, respectively, and another of the second chips is arranged between the last two columns of antenna units of the 4x4 array element and is electrically connected to the last two columns of antenna units, respectively.

[0006] According to some embodiments of the present invention, the two first chips are located on a vertical center line of the 4x4 array element, and the two second chips are located on a horizontal center line of the 4x4 array element.

[0007] According to some embodiments of the present invention, four antenna subarrays are combined to form an 8x8 array element, and the 8x8 array element is provided with an external interface for subarray expansion.

[0008] According to some embodiments of the present invention, the external interface includes a low-frequency connector and a radio frequency connector.

[0009] According to some embodiments of the present invention, the external interface is arranged at the center position of the 8x8 array element.

[0010] According to some embodiments of the present invention, 21 of the 8x8 array elements are spliced ​​and expanded through the external interface to form 1344 array elements.

[0011] According to some embodiments of the present invention, the feeding network of the antenna unit includes two feeding points, and the two feeding points form coupled feeding to form a high-order mode, thereby widening the antenna impedance bandwidth.

[0012] According to some embodiments of the present invention, the feeding network includes a branch line directional coupler, and the branch line directional coupler is respectively connected to the two feeding points to achieve a broadband phase difference of 90°.

[0013] According to some embodiments of the present invention, the branch line directional coupler is a 3dB branch line directional coupler.

[0014] The single-beam dual circular polarization expandable antenna according to the embodiment of the utility model has at least the following beneficial effects: first, when left-hand circular polarization or right-hand circular polarization is required, the multifunctional chips actually working are two first chips for controlling left-hand circular polarization or right-hand circular polarization, and the other two second chips for controlling right-hand circular polarization or left-hand circular polarization are in a silent state, which can save half of the power consumption and has obvious advantages in low-power application environments, and the first chip and the second chip are controlled separately, which is more reliable and convenient; secondly, the antenna subarray is the smallest subarray, which can work alone or be used for array expansion.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings;

[0017] Figure 1 It is a schematic diagram of the existing 1344 antenna array;

[0018] Figure 2 is a schematic diagram of the existing sub-array;

[0019] Figure 3 is a schematic diagram of an antenna subarray of a single-beam dual circularly polarized scalable antenna;

[0020] Figure 4 It is a plan view of an 8x8 array element of a single-beam dual circularly polarized scalable antenna;

[0021] Figure 5 It is a three-dimensional schematic diagram of the 8x8 array element of the single-beam dual circular polarization scalable antenna;

[0022] Figure 6 It is a schematic diagram of 1344 array elements of a single-beam dual circularly polarized scalable antenna;

[0023] Figure 7 It is a three-dimensional structural diagram of the feeding network of the antenna unit of the single-beam dual circularly polarized expandable antenna. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] Reference Figures 3 to 7The utility model discloses a single-beam dual circular polarization expandable antenna, comprising an antenna subarray 100, the antenna subarray 100 comprises 16 antenna units 1 and 4 multifunctional chips 2, the 16 antenna units 1 are arranged in an array to form a 4x4 array element, the 4 multifunctional chips 2 comprise 2 first chips 9 for controlling left-hand circular polarization / right-hand circular polarization and 2 second chips 10 for controlling right-hand circular polarization / left-hand circular polarization; one of the first chips 9 is electrically connected to 8 antenna units 1 respectively, and another first chip 9 is electrically connected to the remaining 8 antenna units 1 respectively; one of the second chips 10 is electrically connected to 8 antenna units 1 respectively, and another second chip 10 is electrically connected to the remaining 8 antenna units 1 respectively. When left-hand circular polarization or right-hand circular polarization is required, the multifunctional chips 2 that actually work are two first chips 9 for controlling left-hand circular polarization or right-hand circular polarization. Correspondingly, the other two second chips 10 for controlling right-hand circular polarization or left-hand circular polarization are in a silent state, which can save half of the power consumption and has obvious advantages in low-power application environments. In addition, the first chip 9 and the second chip 10 are controlled separately, which is more reliable and convenient. Secondly, the antenna subarray 100 is the smallest subarray, which can work alone or be used for array expansion.

[0028] like Figure 3 As shown, in the antenna subarray 100, a first chip 9 is arranged between the first two rows of antenna units 1 of the 4x4 array element and is electrically connected to the first two rows (8) of antenna units 1 respectively, another first chip 9 is arranged between the last two rows of antenna units 1 of the 4x4 array element and is electrically connected to the last two rows (8) of antenna units 1 respectively; a second chip 10 is arranged between the first two columns of antenna units 1 of the 4x4 array element and is electrically connected to the first two columns (8) of antenna units 1 respectively, another second chip 10 is arranged between the last two columns of antenna units 1 of the 4x4 array element and is electrically connected to the last two columns (8) of antenna units 1 respectively. Preferably, the two first chips 9 are located on the vertical center line of the 4x4 array element, and the two second chips 10 are located on the horizontal center line of the 4x4 array element, so that the multifunctional chip 2 is connected to the antenna unit 1 through the adapter cable, so that the routing of the adapter cable is as equal as possible.

[0029] like Figure 4 As shown, in some embodiments, four antenna subarrays 100 are combined to form an 8x8 array element 200, and the 8x8 array element 200 includes a left-hand circular polarization unit 3 and a right-hand circular polarization unit 4, wherein the left-hand circular polarization unit 3 includes 16 antenna units 1 and 4 first chips 9 capable of controlling left-hand circular polarization, and the right-hand circular polarization unit 4 includes 16 antenna units 1 and 4 second chips 10 capable of controlling right-hand circular polarization. The 8x8 array element 200 is provided with an external interface for subarray expansion. Figure 5The external interface generally includes a low-frequency connector 5 and a radio frequency connector 6. The external interface is arranged at the center of the 8x8 array element 200, which saves space and facilitates expansion.

[0030] like Figure 6 As shown, in some embodiments, 21 8x8 array elements 200 are spliced ​​and expanded through an external interface to form 1344 array elements 300. When the 1344 array elements 300 are working in left-hand circular polarization or right-hand circular polarization, the multifunctional chip 2 that actually works is the first chip 9 for controlling left-hand circular polarization or right-hand circular polarization, and correspondingly, the remaining second chips 10 for controlling right-hand circular polarization or left-hand circular polarization are in a silent state, which can save half of the power consumption.

[0031] like Figure 7 As shown, the feeding network of the antenna unit 1 includes two feeding points 7 and a 3dB branch line directional coupler 8. The branch line directional coupler 8 is respectively connected to the two feeding points to form coupled feeding to form a high-order mode and achieve a 90° broadband phase difference, which can broaden the antenna impedance bandwidth while also achieving switching between left-handed and right-handed circular polarization.

[0032] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0033] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A single-beam dual circular polarization expandable antenna, characterized in that: include: An antenna subarray (100), the antenna subarray (100) comprising 16 antenna units (1) and 4 multifunctional chips (2), the 16 antenna units (1) being arranged in an array to form a 4x4 array element, the 4 multifunctional chips (2) comprising 2 first chips (9) for controlling left-hand circular polarization / right-hand circular polarization operation and 2 second chips (10) for controlling right-hand circular polarization / left-hand circular polarization operation; one of the first chips (9) is electrically connected to 8 of the antenna units (1), and another of the first chips (9) is electrically connected to the remaining 8 of the antenna units (1); one of the second chips (10) is electrically connected to 8 of the antenna units (1), and another of the second chips (10) is electrically connected to the remaining 8 of the antenna units (1).

2. The single-beam dual circular polarization expandable antenna according to claim 1, characterized in that: One of the first chips (9) is arranged between the first two rows of antenna units (1) of the 4x4 array element and is electrically connected to the first two rows of antenna units (1), and another of the first chips (9) is arranged between the last two rows of antenna units (1) of the 4x4 array element and is electrically connected to the last two rows of antenna units (1); one of the second chips (10) is arranged between the first two columns of antenna units (1) of the 4x4 array element and is electrically connected to the first two columns of antenna units (1), and another of the second chips (10) is arranged between the last two columns of antenna units (1) of the 4x4 array element and is electrically connected to the last two columns of antenna units (1).

3. The single-beam dual circular polarization expandable antenna according to claim 2, characterized in that: The two first chips (9) are located on the vertical center line of the 4x4 array element, and the two second chips (10) are located on the horizontal center line of the 4x4 array element.

4. The single-beam dual circular polarization expandable antenna according to claim 1, characterized in that: Four antenna sub-arrays (100) are assembled to form an 8x8 array element (200), and the 8x8 array element (200) is provided with an external interface for sub-array expansion.

5. The single-beam dual circular polarization expandable antenna according to claim 4, characterized in that: The external interface comprises a low-frequency connector (5) and a radio frequency connector (6).

6. The single-beam dual circular polarization expandable antenna according to claim 4, characterized in that: The external interface is arranged at the center of the 8x8 array element (200).

7. The single-beam dual circular polarization expandable antenna according to claim 4, characterized in that: 21 of the 8x8 array elements (200) are combined and expanded through the external interface to form 1344 array elements (300).

8. The single-beam dual circular polarization expandable antenna according to claim 1, characterized in that: The feeding network of the antenna unit (1) comprises two feeding points (7), and the two feeding points form coupled feeding to form a high-order mode, thereby widening the antenna impedance bandwidth.

9. The single-beam dual circular polarization expandable antenna according to claim 8, characterized in that: The feeding network comprises a branch line directional coupler (8), and the branch line directional coupler (8) is respectively connected to the two feeding points to achieve a broadband phase difference of 90°.

10. The single-beam dual circular polarization expandable antenna according to claim 9, characterized in that: The branch line directional coupler (8) is a 3dB branch line directional coupler.

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