Broadband compact type circular polarization probe

Abstract

The utility model discloses a broadband compact type circularly polarized probe, and relates to the technical field of circularly polarized antennas. The circular polarization probe comprises a feed part and a radiation part, a standard waveguide channel is formed in the feed part, a parallel waveguide channel is formed in the radiation part, the standard waveguide channel is communicated with the parallel waveguide channel, the length of the parallel waveguide channel is smaller than one wavelength, and the radiation part is communicated with the standard waveguide channel. And a slot is formed in the wide edge of the outer side port of the parallel waveguide channel. The circularly polarized probe is simple in structure, the space size and the use difficulty can be greatly reduced in practical application and array formation, and the practical processing and use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of circularly polarized antenna technology, and in particular to a broadband compact circularly polarized probe. Background Technology

[0002] A circularly polarized probe is an antenna structure used to receive or transmit circularly polarized electromagnetic wave signals. Obtaining a circularly polarized wave requires three conditions: a 90° spatial phase difference, a 90° transmission phase difference, and equal amplitude. In traditional waveguide structures, the electric field distribution is mainly concentrated in the x-direction, while the electric field in the y-direction is very weak, making it difficult to achieve a 90° spatial phase difference. Furthermore, traditional circularly polarized radiating structures require dual-port feeding, and the radiating structure itself is relatively complex, causing inconvenience in practical manufacturing and use. Especially when assembling arrays, traditional circularly polarized radiating structures occupy a large amount of space, making them unsuitable for confined spaces, and their relatively complex feeding structure results in high manufacturing costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to provide a broadband compact circular polarization probe with simple structure and low manufacturing cost.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a broadband compact circularly polarized probe, including a feeding part and a radiating part, wherein a standard waveguide channel is formed in the feeding part, and a parallel waveguide channel is formed in the radiating part. The standard waveguide channel is connected to the parallel waveguide channel. The length of the parallel waveguide channel is less than one wavelength, and a slot is formed on the wide side of the outer port of the parallel waveguide channel.

[0005] The beneficial effects of adopting the above technical solution are as follows: In this application, the parallel waveguide size of the radiating part is reduced to below one wavelength, and a narrow slot is opened on the wide side. Adjusting the slot depth and slot width can enhance the electric field in the y direction while keeping the electric field in the x direction unchanged. Through the above design, the circularly polarized probe structure is simplified, and the spatial size and usage difficulty can be greatly reduced in practical applications and arraying, thereby reducing actual processing and usage costs. Attached Figure Description

[0006] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0007] Figure 1 This is a schematic diagram of the structure of the circularly polarized probe according to the first embodiment of this utility model;

[0008] Figure 2 This is a schematic diagram of the structure of the circularly polarized probe according to the first embodiment of this utility model;

[0009] Figure 3This is a cross-sectional view of the circularly polarized probe according to the first embodiment of this utility model;

[0010] Figure 4 This is a schematic diagram of the structure of the circularly polarized probe according to the second embodiment of this utility model;

[0011] Figure 5 This is a schematic diagram of the structure of the circularly polarized probe according to the second embodiment of this utility model;

[0012] Figure 6 This is a cross-sectional view of the circularly polarized probe described in the second embodiment of this utility model;

[0013] Figure 7 This is a schematic diagram of the structure of the circularly polarized probe according to the third embodiment of this utility model;

[0014] Figure 8 This is a schematic diagram of the structure of the circularly polarized probe according to the third embodiment of this utility model;

[0015] Figure 9 This is a cross-sectional view of the circularly polarized probe described in the third embodiment of this utility model;

[0016] Figure 10 This is a schematic diagram of the structure of the circularly polarized probe according to the fourth embodiment of this utility model;

[0017] Figure 11 This is a schematic diagram of the structure of the circularly polarized probe according to the fourth embodiment of this utility model;

[0018] Figure 12 This is a cross-sectional view of the circularly polarized probe described in the fourth embodiment of this utility model;

[0019] The components are: 1. Power supply section; 1-1. Flange body; 1-2. Rectangular boss connection section; 1-3. Transition connection section; 1-4. Mounting hole; 1-5. Positioning hole; 2. Radiation section; 3. Standard waveguide channel; 4. Parallel waveguide channel; 5. Slot; 6. Standard waveguide interface; 7. Positioning pin. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] like Figures 1-12 As shown in the figure, this utility model embodiment discloses a broadband compact circularly polarized probe. Further, the circularly polarized probe is made of metal, preferably brass. The circularly polarized probe includes a feed section 1 and a radiating section 2. A standard waveguide channel 3 is formed within the feed section 1, and a parallel waveguide channel 4 is formed within the radiating section 2. The standard waveguide channel 3 and the parallel waveguide channel 4 are connected. The length of the parallel waveguide channel 4 is less than one wavelength (the wavelength is calculated with reference to the low frequency or center frequency of the operating frequency band), and a slot 5 is formed on the wide side of the outer port of the parallel waveguide channel 4.

[0023] Furthermore, such as Figure 1 , Figure 4 , Figure 7 as well as Figure 10 As shown, the power supply unit 1 includes a flange body 1-1. A rectangular boss connecting portion 1-2 is formed on the end face of the flange body 1-1 near the radiating portion 2. A transition connecting portion 1-3 is formed on the rectangular boss connecting portion 1-2. The cross-section of the transition connecting portion 1-3 gradually decreases. The transition connecting portion 1-3 is used to connect with the radiating portion 2. A standard waveguide channel 3 is formed at the center of the flange body 1-1, the rectangular boss connecting portion 1-2, and the transition connecting portion 1-3. Standard waveguide interfaces 6 are formed at the inner and outer ends of the standard waveguide channel. Several mounting holes 1-4 and positioning holes 1-5 are formed along the outer periphery of the flange body 1-1. The power supply unit 2 has a rectangular structure. The inner end of the parallel waveguide channel 4 inside the power supply unit is connected to the inner port of the standard waveguide channel 3.

[0024] Furthermore, the specific shape of the slot 5 can be at least one of the following:

[0025] First, the slot 5 can be triangular, and the two opposite faces of the radiating aperture structure at the outer port of the parallel waveguide channel 4 overlap partially when projected vertically. Second, the slot 5 can also be fan-shaped, and the two opposite faces of the radiating aperture structure at the outer port of the parallel waveguide channel 4 overlap partially when projected vertically. Third, the slot 5 can also be circular, and the two opposite faces of the radiating aperture structure at the outer port of the parallel waveguide channel 4 overlap partially when projected vertically. Fourth, the slot 5 can also be irregularly shaped, and the two opposite faces of the radiating aperture structure at the outer port of the parallel waveguide channel 4 overlap partially when projected vertically. It should be noted that the specific shape of the slot 5 can also be other shapes, which will not be elaborated here.

[0026] In traditional waveguide structures, the electric field distribution is mainly concentrated in the x-direction, while the electric field in the y-direction is very weak, making it difficult to form a 90° spatial phase difference. To solve this problem, the size of the parallel waveguide in the radiating section is reduced to below one wavelength, and a narrow slot is created on the wide side. Adjusting the slot depth and width can enhance the electric field in the y-direction while keeping the electric field in the x-direction unchanged, thus achieving a satisfactory radiation state. Adjusting the shape and size of the slot can control the radiation state of the electromagnetic wave. Compared to traditional circularly polarized radiation structures, this probe structure is simpler, significantly reducing space requirements and ease of use in practical applications and arraying, thereby lowering actual manufacturing and operating costs.

Claims

1. A broadband compact circularly polarized probe, characterized in that, It includes a feeding section (1) and a radiating section (2). A standard waveguide channel (3) is formed in the feeding section (1), and a parallel waveguide channel (4) is formed in the radiating section (2). The standard waveguide channel (3) is connected to the parallel waveguide channel (4). The length of the parallel waveguide channel (4) is less than one wavelength, and a slot (5) is formed on the wide side of the outer port of the parallel waveguide channel (4).

2. The broadband compact circularly polarized probe as described in claim 1, characterized in that: The power supply unit (1) includes a flange body (1-1). A rectangular boss connection part (1-2) is formed on the end face of the flange body (1-1) near the radiating part (2). A transition connection part (1-3) is formed on the rectangular boss connection part (1-2). The cross-section of the transition connection part (1-3) gradually decreases. The transition connection part (1-3) is used to connect with the radiating part (2). A standard waveguide channel (3) is formed at the center of the flange body (1-1), the rectangular boss connection part (1-2), and the transition connection part (1-3). Standard waveguide interfaces (6) are formed at the inner and outer ends of the standard waveguide channel.

3. The broadband compact circularly polarized probe as described in claim 2, characterized in that: A plurality of mounting holes (1-4) and positioning holes (1-5) are formed along the outer periphery of the flange body (1-1).

4. The broadband compact circularly polarized probe as described in claim 1, characterized in that: The feed section (1) has a rectangular structure, and the inner end of the parallel waveguide channel (4) in the feed section is connected to the inner port of the standard waveguide channel (3).

5. The broadband compact circularly polarized probe as described in claim 1, characterized in that: The slot (5) is triangular, and the two opposite surfaces of the radiation port structure of the outer port of the parallel waveguide channel (4) overlap in a vertical projection.

6. The broadband compact circularly polarized probe as described in claim 1, characterized in that: The slot (5) is fan-shaped, and the two opposite surfaces of the radiation port structure of the fan-shaped slot along the outer port of the parallel waveguide channel (4) have a partial overlap when projected vertically.

7. The broadband compact circularly polarized probe as described in claim 1, characterized in that: The slot (5) is circular, and the two opposite surfaces of the radiation port structure of the outer port of the parallel waveguide channel (4) overlap in a vertical projection.

8. The broadband compact circularly polarized probe as described in claim 1, characterized in that: The slot (5) is irregular in shape, and the two opposite surfaces of the radiation port structure of the outer port of the parallel waveguide channel (4) overlap in a part when projected vertically.

Images