Patch antenna capable of improving cross polarization ratio

Abstract

The utility model discloses a patch antenna capable of improving a cross polarization ratio, which comprises an oscillator surface and a radiation arm arranged on the oscillator surface, and further comprises a folded edge which is arranged at the edge of the oscillator surface and is inclined back to one side of the radiation arm, and a chamfer part which is inclined back to one side of the radiation arm is arranged between two adjacent folded edges; by means of the structure, the condition of performance asymmetry of PR of horizontal scanning at + / -60 DEG C can be well improved, and very good practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the field of antennas, in particular to a patch antenna capable of improving a cross-polarization ratio. Background Art

[0002] In some plastic dipole antennas with a frequency band of 3600-4100MHz, the antenna adopts a two-point feeding method. When scanning horizontally at ±60°, the performance parameter of the cross-polarization ratio (CPR) is asymmetric in these two directions, and cannot simultaneously meet the requirement that the cross-polarization ratio performance in both directions of horizontal ±60° is ≥10dB; therefore, a patch antenna that can improve the cross-polarization ratio is urgently needed to solve the above problem. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a patch antenna capable of improving the cross-polarization ratio.

[0004] A technical solution adopted by an embodiment of the utility model to solve its technical problem is: a patch antenna capable of improving the cross-polarization ratio, comprising a dipole surface and a radiating arm arranged on the dipole surface, and also comprising a folded edge arranged at the edge of the dipole surface and inclined on the side facing away from the radiating arm, and a chamfered portion inclined on the side facing away from the radiating arm is arranged between two adjacent folded edges.

[0005] As one of the preferred embodiments of the present utility model, the angle α between the folded edge and the vibrator surface is set to 30-60°.

[0006] As one of the preferred embodiments of the present invention, the width D1 of the folded edge is set to 0.02-0.04λmm, where λ is the wavelength.

[0007] As one of the preferred embodiments of the present invention, the width D2 of the chamfered portion is set to 0.02-0.04λmm, where λ is the wavelength.

[0008] As one of the preferred embodiments of the utility model, a plurality of mounting holes for connecting pillars are arranged on the vibrator surface.

[0009] The beneficial effects of the utility model are as follows: a patch antenna capable of improving the cross-polarization ratio comprises a dipole surface and a radiating arm arranged on the dipole surface, and also comprises a folded edge arranged at the edge of the dipole surface and inclined on a side facing away from the radiating arm, and a chamfered portion inclined on a side facing away from the radiating arm is arranged between two adjacent folded edges; through the above structure, the performance asymmetry of horizontal scanning ±60° PR can be well improved, and the utility model has very good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0011] Figure 1 is a first structural schematic diagram of a patch antenna capable of improving the cross-polarization ratio;

[0012] Figure 2 is a second structural schematic diagram of a patch antenna capable of improving the cross-polarization ratio;

[0013] Figure 3 The CPR parameter diagram for the existing array antenna unit horizontally scanning ±60°;

[0014] Figure 4 This is a CPR parameter diagram of the array antenna unit of the present invention when horizontally scanning ±60°. DETAILED DESCRIPTION

[0015] 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.

[0016] In the description of the present utility model, the meaning of "more than" is 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 technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0017] 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.

[0018] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0019] Reference Figures 1 to 4 A patch antenna capable of improving the cross-polarization ratio comprises a dipole surface 10 and a radiation arm 20 arranged on the dipole surface 10, and further comprises a folded edge 30 arranged at the edge of the dipole surface 10 and inclined on a side facing away from the radiation arm 20, and a chamfered portion 40 inclined on a side facing away from the radiation arm 20 is arranged between two adjacent folded edges 30.

[0020] In the present invention, when the vibrator surface 10 is set to be a square and has a size of 0.3λ, a folded edge 30 is folded downward at each edge of the vibrator surface 10, and a chamfered portion 40 is provided at the connection between two adjacent folded edges 30, thereby forming a bent vibrator of the present invention, and then the bent vibrator is installed on the support of the plastic medium; Figure 3 , which is a CPR parameter diagram of an array antenna unit composed of a planar oscillator in the prior art horizontally scanning ±60°; refer to Figure 4 , is the CPR parameter diagram of the array antenna unit of the utility model when horizontally scanning ±60°, Figure 4 So in Figure 3 From the parameter diagram when the angle between the folded edge 30 and the vibrator surface 10 is 45°, the width D1 of the folded edge 30 is 2 mm, and the width D2 of the chamfered portion 40 is 3 mm on the basis of the planar vibrator, it can be seen that the performance asymmetry of the horizontal scanning ±60℃ PR of the patch antenna of the utility model is well improved.

[0021] In one embodiment, the angle α between the folded edge 30 and the vibrator surface 10 is set to 30-60°; preferably, the angle α between the folded edge 30 and the vibrator surface 10 is set to 45°.

[0022] In one embodiment, the width D1 of the folded edge 30 is set to 0.02-0.04λmm, where λ is the wavelength; preferably, the width D1 of the folded edge 30 is set to 2mm.

[0023] In one embodiment, the width D2 of the chamfered portion 40 is set to 0.02-0.04λmm, where λ is the wavelength; preferably, the width D2 of the chamfered portion 40 is set to 3mm.

[0024] The vibrator surface 10 is provided with a plurality of mounting holes 50 for connecting the pillars.

[0025] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A patch antenna capable of improving a cross-polarization ratio, comprising a dipole surface (10) and a radiating arm (20) arranged on the dipole surface (10), characterized in that: It also comprises a folded edge (30) arranged at the edge of the oscillator surface (10) and inclined on a side facing away from the radiation arm (20), and a chamfered portion (40) inclined on a side facing away from the radiation arm (20) is arranged between two adjacent folded edges (30).

2. A patch antenna capable of improving cross-polarization ratio according to claim 1, characterized in that: The included angle α between the folded edge (30) and the vibrator surface (10) is set to 30-60°.

3. A patch antenna capable of improving cross-polarization ratio according to claim 1, characterized in that: The width D1 of the folded edge (30) is set to 0.02-0.04λmm, where λ is the wavelength.

4. A patch antenna capable of improving cross-polarization ratio according to claim 1, characterized in that: The width D2 of the chamfered portion (40) is set to 0.02-0.04λmm, where λ is the wavelength.

5. The patch antenna capable of improving cross-polarization ratio according to claim 1, characterized in that: The vibrator surface (10) is provided with a plurality of mounting holes (50) for supporting column connection.

Images