A miniaturized double-ridged horn antenna

Abstract

The utility model discloses a miniaturized double-ridged horn antenna, the antenna comprises a double-ridged horn antenna body in a mirror-symmetrical structure, the double ridges of the double-ridged horn antenna body are extended along the expansion section to the upper and lower walls of the double-ridged horn antenna body, respectively, and extension parts are provided, the double ridges of the double-ridged horn antenna body are respectively provided along the contraction section with waveguide feeding sections, and the waveguide feeding sections are installed on a support seat; the opposite surfaces of the two waveguide feeding sections are in a step-like symmetrical structure. By adopting a method of extending the double ridges to the upper and lower walls of the double-ridged horn antenna body at the opening of the double-ridged horn antenna body, it is beneficial for electromagnetic waves to have good radiation matching with air during the radiation process, and at the same time, in order to ensure that the antenna meets the low-frequency index under such a small size requirement, the rear end of the ridge is designed to be stepped in the waveguide feeding section, and at the same time, the waveguide feeding section and the waveguide back cover are not in direct contact, and a window is set in the waveguide feeding section, which further expands the low-frequency standing wave index of the antenna.

Description

Technical Field

[0001] The utility model belongs to the technical field of antennas and relates to a miniaturized double-ridged horn antenna. Background Art

[0002] The double-ridged horn antenna is a wideband antenna. The existing double-ridged horn antennas have a relatively wide bandwidth, but the corresponding antenna size is relatively large. Especially when it comes to low frequency bands, the size of the antenna will increase further. For example, the existing Chinese utility model patent with the publication number CN213692343U discloses a horn antenna, which includes a double-ridged horn antenna body, a metal plate, and a fixing. The double-ridged horn antenna body is a mirror-symmetrical structure. The metal plate is arranged in the opening direction of the double-ridged horn antenna body, and the plate surface of the metal plate faces the opening of the double-ridged horn antenna body. The fixing connects the double-ridged horn antenna body and the metal plate, which can increase the beam width of the horn antenna and improve the antenna performance. To this end, a miniaturized double-ridged horn antenna is provided on the premise of ensuring the antenna bandwidth. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a miniaturized double-ridged horn antenna, which can reduce the size of the antenna while ensuring the antenna bandwidth.

[0004] A miniaturized double-ridged horn antenna, the antenna comprising a double-ridged horn antenna body with a mirror-symmetrical structure, the double-ridged horn antenna body extending from the expansion section to the upper and lower walls of the double-ridged horn antenna body are respectively provided with extension parts, the double-ridged horn antenna body is respectively provided with waveguide feeding sections along the contraction section, and the waveguide feeding sections are installed on a support seat;

[0005] The opposite surfaces of the two waveguide feeding sections are in a step-like shape with a symmetrical structure.

[0006] Optionally, the support seat includes a fixed frame with openings at both ends, the fixed frame is a rectangular structure, the two waveguide feeding segments are installed on the inner circumference of the fixed frame through the first open end of the fixed frame, windows are respectively provided on opposite sides of the first open end of the fixed frame, the windows are located on opposite sides of the center of the waveguide feeding segment, and a waveguide back cover is installed at the second open end of the fixed frame.

[0007] Optionally, a port is provided on the periphery of the fixing frame, one end of the port passes through the outer surface of the fixing frame and one of the waveguide feeding segments, and extends to the centers of the two waveguide feeding segments.

[0008] Optionally, the waveguide feeding section and the waveguide back cover are installed with a gap.

[0009] Optionally, the extension portion is a truncated cone structure, and a center line of the extension portion is perpendicular to the double ridges of the double-ridged horn antenna body.

[0010] Optionally, the diameter of the antenna is less than 40 mm, and the length of the antenna is less than 40 mm.

[0011] The beneficial effects that the utility model can produce include:

[0012] The utility model provides a miniaturized double-ridged horn antenna, which extends double ridges to the upper and lower walls of the double-ridged horn antenna body at the opening of the double-ridged horn antenna body, thereby facilitating good radiation matching of electromagnetic waves with air during the radiation process. At the same time, in order to ensure that the antenna meets the low-frequency index under such a small size requirement, the rear end of the ridge is designed to be stepped in the waveguide feeding section, and the waveguide feeding section and the waveguide back cover are not in direct contact, and a window is set in the waveguide feeding section, which further expands the low-frequency standing wave index of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a miniaturized double-ridged horn antenna of the utility model;

[0014] Figure 2 For the utility model Figure 1 A cross-sectional view of

[0015] Figure 3 It is a schematic diagram of the standing wave of the antenna in the utility model;

[0016] Figure 4 It is a schematic diagram of the gain of the antenna in the utility model;

[0017] In the figure: 1. double-ridged horn antenna body, 2. extension part, 3. waveguide feeding section, 4. port, 5. fixing frame, 6. window, 7. waveguide back cover. DETAILED DESCRIPTION

[0018] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.

[0019] like Figure 1-Figure 2As shown, the utility model provides a miniaturized double-ridged horn antenna, the antenna includes a double-ridged horn antenna body 1 with a mirror-symmetrical structure, the double ridges of the double-ridged horn antenna body 1 are extended along the expansion section to the upper and lower walls of the double-ridged horn antenna body 1, and extension portions 2 are respectively provided, wherein the extension portion 2 is a truncated cone structure, and the center line of the extension portion 2 is perpendicular to the double ridges of the double-ridged horn antenna body 1, and the extension portion 2 is conducive to good radiation matching of electromagnetic waves with air during the radiation process. At the same time, in order to ensure that the antenna meets the low-frequency index under such a small size requirement, the double ridges of the double-ridged horn antenna body 1 are respectively provided with waveguide feeding sections 3 along the contraction section, and the opposite surfaces of the two waveguide feeding sections 3 are stepped with a symmetrical structure, and the waveguide feeding sections 3 are installed on a support seat. Specifically, the support seat includes a fixed frame 5 with openings at both ends, the fixed frame 5 is a rectangular structure, and the two waveguide feeding sections 3 are fixedly installed on the inner periphery of the fixed frame 5 through the first open end of the fixed frame 5. Windows 6 are respectively provided on the opposite sides of the first open end of the fixed frame 5, and the windows 6 are located on the opposite sides of the center of the waveguide feeding section 3. The second open end of the fixed frame 5 is installed with a waveguide back cover 7, and the waveguide feeding section 3 and the waveguide back cover 7 are installed with a gap, which can further expand the low-frequency standing wave index of the antenna. In the above, the outer periphery of the fixed frame 5 is provided with a port 4, one end of the port 4 passes through the outer surface of the fixed frame 5 and one of the waveguide feeding sections 3, and extends to the center of the two waveguide feeding sections 3, for connecting communication equipment.

[0020] In the above embodiment, an antenna with a diameter less than 40 mm and a length less than 40 mm is manufactured. Figure 3 As shown in the figure, the standing wave of the antenna is less than 2 in the frequency band 2-15GHz. After the bandwidth is extended, the standing wave is poor in the frequency band 15-19GHz. Figure 4 As shown, the gain of the antenna is greater than 1dB.

[0021] The above are only several embodiments of the utility model, and do not limit the utility model in any form. Although the utility model is disclosed as above in the preferred embodiments, it is not used to limit the utility model. Any technician familiar with this profession, without departing from the scope of the technical solution of the utility model, makes slight changes or modifications using the technical contents disclosed above, which are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A miniaturized double-ridged horn antenna, comprising a double-ridged horn antenna body (1) with a mirror-symmetrical structure, characterized in that: The double ridges of the double ridge horn antenna body (1) are extended along the expansion section to the upper and lower walls of the double ridge horn antenna body (1) and are respectively provided with extension parts (2); the double ridges of the double ridge horn antenna body (1) are respectively provided with waveguide feeding sections (3) along the contraction section; and the waveguide feeding sections (3) are installed on a support seat; The opposing surfaces of the two waveguide feeding sections (3) are in a step-like shape with a symmetrical structure.

2. A miniaturized double-ridged horn antenna according to claim 1, characterized in that: The support seat comprises a fixed frame (5) with openings at both ends, the fixed frame (5) being a rectangular structure, the two waveguide feeding sections (3) being mounted on the inner periphery of the fixed frame (5) via the first open end of the fixed frame (5), windows (6) being respectively provided on two opposite sides of the first open end of the fixed frame (5), the windows (6) being located on two opposite sides of the center of the waveguide feeding section (3), and a waveguide back cover (7) being mounted on the second open end of the fixed frame (5).

3. A miniaturized double-ridged horn antenna according to claim 2, characterized in that: A port (4) is provided on the outer periphery of the fixing frame (5), one end of the port (4) passes through the fixing frame (5) and one of the waveguide feeding sections (3), and extends to the centers of the two waveguide feeding sections (3).

4. A miniaturized double-ridged horn antenna according to claim 3, characterized in that: The waveguide feeding section (3) and the waveguide rear cover (7) are installed with a gap.

5. The miniaturized double-ridged horn antenna according to claim 1, characterized in that: The extension portion (2) is a truncated cone structure, and the center line of the extension portion (2) is perpendicular to the double ridges of the double-ridged horn antenna body (1).

6. The miniaturized double-ridged horn antenna according to claim 1, characterized in that: The diameter of the antenna is less than 40 mm, and the length of the antenna is less than 40 mm.

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