Interference antenna

Abstract

The embodiment of the utility model relates to the technical field of wireless communication, and discloses an interference antenna, which comprises an antenna cover, a bottom plate and at least three radiation oscillators, the antenna housing and the bottom plate are buckled to form an accommodating space for accommodating at least three radiation oscillators; the at least three radiation oscillators are of planar monopole inverted F structures; wherein the at least three radiation oscillators are mounted on one side, facing the antenna housing, of the bottom plate, and the at least three radiation oscillators are distributed in a circumferential equiangular manner. By arranging the three radiation oscillators with the planar monopole inverted F structures on the bottom plate, the embodiment of the utility model realizes wider antenna impedance bandwidth and supports broadband coverage, and the low profile and smaller size of the radiation oscillators facilitate hiding and vehicle-mounted installation.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of wireless communications, and in particular to an interference antenna. Background Art

[0002] A jamming antenna is a device specifically designed to interfere with radio signals. It emits radio noise or signals to intentionally disrupt or prevent normal wireless communications. With the rise of the low-altitude economy, the drone industry has experienced rapid growth, with drones widely used in public security, military, agriculture, transportation, and other fields. While the diversification of drone services has brought convenience to people's lives and production, it also presents challenges and potential safety hazards. Therefore, to prevent potential problems, avoid illegal operations, and ensure effective use and safety, it is necessary to use communication signal countermeasures to block the connection between drones and operators, thereby achieving effective management. Commonly used communication system jamming antennas utilize rod-shaped fiberglass omnidirectional antennas. Omnidirectional antennas are primarily constructed from dipoles, with multiple elements connected in series and fed along a central axis to achieve high gain. However, these jamming antennas have a narrow operating bandwidth, a limited elevation angle, and a rod-shaped design that makes them difficult to conceal or install on vehicles. Utility Model Content

[0003] In order to solve the problems of narrow working bandwidth, insufficient elevation angle and rod-shaped shape of existing jamming antennas that are not convenient for hiding and vehicle installation, an embodiment of the present invention provides a jamming antenna that overcomes the above problems or at least partially solves the above problems.

[0004] According to one aspect of an embodiment of the present utility model, there is provided an interference antenna, comprising an antenna cover, a base plate and at least three radiating elements; the antenna cover and the base plate are buckled together to form a receiving space for receiving at least three of the radiating elements; at least three of the radiating elements are planar monopole inverted F structures; wherein, at least three of the radiating elements are mounted on a side of the base plate facing the antenna cover, and at least three of the radiating elements are arranged in a circular equiangular distribution.

[0005] In an optional embodiment, the radiating oscillator includes a radiating element, a grounding structure and an angled feeding structure; the radiating element is used to transmit and receive signals in the first frequency band; the grounding structure is used to connect the radiating element and the base plate; the angled feeding structure is used to receive feed, one end of the angled feeding structure is connected to the radiating element, and the other end extends toward the base plate, and a protruding angled structure is provided at the end of the angled feeding structure facing the base plate.

[0006] In an optional manner, the radiation element is a flat plate structure made of metal material, and the flat plate structure is arranged perpendicular to the base plate.

[0007] In an optional manner, the length of the planar structure in a direction perpendicular to the bottom plate is set to one quarter of the wavelength corresponding to the first frequency band signal.

[0008] In an optional manner, the antenna cover is configured as a cylindrical structure with an open lower end, and the height of the cylindrical structure is greater than the length of the flat plate structure in a direction perpendicular to the base plate.

[0009] In an optional manner, the base plate is a solid circular structure made of metal material, which is used to reflect wireless signals.

[0010] In an optional manner, the diameter of the solid circle structure is set to half of the wavelength corresponding to the first frequency band signal.

[0011] In an optional manner, the interference antenna further includes a fixing member, and at least three of the radiation elements are respectively mounted on a side of the base plate facing the antenna cover through the fixing member; the fixing member is made of insulating material.

[0012] In an optional manner, the interference antenna further includes a mounting bracket, and the side of the base plate facing away from the antenna cover is fixedly connected to the mounting bracket.

[0013] In an optional manner, the operating frequency band of the interference antenna is 350-1200 MHz, and the radiation gain is 3-8 dB.

[0014] The embodiment of the utility model achieves a wider antenna impedance bandwidth and supports broadband coverage by arranging three planar monopole inverted-F structure radiating elements on the base plate. The planar monopole inverted-F structure radiating elements have a low profile and a small size, which is convenient for concealment and vehicle installation.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0017] Figure 1 A schematic diagram of the explosion structure of the jamming antenna provided by an embodiment of the present utility model is shown;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of a radiation oscillator provided in an embodiment of the present utility model is shown;

[0019] Figure 3 The figure shows a front view of the radiation vibrator provided by the embodiment of the present utility model.

[0020] The accompanying drawings in the specific implementation manner are as follows:

[0021] Antenna cover 110, base plate 120, radiating element 130, first radiating element 130a, second radiating element 130b, third radiating element 130c, radiating element 131, grounding structure 132, mounting plate 1321, angled feeding structure 133, fixing member 140, first fixing member 140a, second fixing member 140b, mounting bracket 150. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0023] See also Figure 1 , Figure 1 A schematic diagram of the exploded structure of the interference antenna provided by an embodiment of the present invention is shown, which includes an antenna cover 110, a base plate 120 and at least three radiating vibrators 130; the antenna cover 110 and the base plate 120 are buckled together to form a accommodating space for accommodating at least three of the radiating vibrators 130; at least three of the radiating vibrators 130 are all planar monopole inverted F structures; wherein, at least three of the radiating vibrators 130 are installed on the side of the base plate 120 facing the antenna cover 110, and at least three of the radiating vibrators 130 are arranged in a circular equiangular distribution.

[0024] In a specific embodiment of the present invention, the interference antenna includes three radiating elements 130, namely a first radiating element 130a, a second radiating element 130b and a third radiating element 130c. The first radiating element 130a, the second radiating element 130b and the third radiating element 130c are distributed at an equal angle of 120° around the circle.

[0025] The embodiment of the present invention achieves a wider antenna impedance bandwidth and supports broadband coverage by arranging three planar monopole inverted-F structure radiating elements 130 on the base plate 120. The planar monopole inverted-F structure radiating elements 130 have a low profile and a small size, which is convenient for concealment and vehicle installation.

[0026] In one specific implementation of the present invention, the jamming antenna operates in a frequency range of 350-1200 MHz, with a radiation gain of 3-8 dB. It is understood that different radiating elements 130 operate at different frequencies, and the present invention can adjust the specific operating frequency and radiation gain of the jamming antenna by combining different frequency ranges and numbers of radiating elements 130.

[0027] Among them, at least three radiating oscillators 130 have the same specifications, see Figure 2-Figure 3 , Figure 2 The figure shows a schematic diagram of the three-dimensional structure of the radiation vibrator provided by the embodiment of the utility model. Figure 3 A front view of a radiating element 130 provided in an embodiment of the present invention is shown. The radiating element 130 includes a radiating element 131, a grounding structure 132, and an angled feeding structure 133. In this embodiment of the present invention, the end of the radiating element 131 is bent toward the base plate 120 to form the grounding structure 132, and the feeding end of the middle section of the radiating element 131 extends toward the base plate 120 to form the angled feeding structure 133, thereby forming the planar monopole inverted-F structure.

[0028] Specifically, the radiating element 131 is used to transmit and receive signals in the first frequency band. The radiating element 131 is a flat plate structure made of a metal material, disposed perpendicularly to the base plate 120. The first frequency band signal is specifically configured by those skilled in the art based on actual application conditions. The length of the flat plate structure in a direction perpendicular to the base plate 120 is configured to be one-quarter of the wavelength corresponding to the first frequency band signal. In one specific embodiment, the length of the flat plate structure in a direction perpendicular to the base plate 120 is configured to be 106.8 mm. This embodiment of the utility model achieves broadband characteristics through the relatively wide flat plate structure of the radiating element 131.

[0029] The grounding structure 132 is used to connect the radiation element 131 and the bottom plate 120. In a specific implementation of the embodiment of the present utility model, as shown in FIG. Figure 2 As shown, one end of the grounding structure 132, near the base plate 120, is bent to form a mounting plate 1321 disposed parallel to the base plate 120. Mounting plate 1321 is provided with corresponding through-hole structures on the base plate 120, allowing mounting plate 1321 and base plate 120 to be fixedly connected via rivets or other fasteners, thereby grounding and securing the grounding structure 132. The design of the grounding structure 132 in this embodiment of the utility model not only achieves structural stability but also effectively reduces the low-frequency resonant frequency, enabling a compact radiating element 130 and reducing its profile.

[0030] The angled feed structure 133 is used to receive power. One end of the angled feed structure 133 is connected to the radiating element 131, and the other end extends toward the base plate 120. The end of the angled feed structure 133 facing the base plate 120 is provided with a protruding angled structure. The angled structure is tapered and does not directly contact the base plate 120. By designing the angled feed structure 133 at the feeding end of the radiating element 130, the embodiment of the present invention can broaden the impedance bandwidth.

[0031] In an embodiment of the present invention, a coaxial cable is used to feed the angled feeding structures 133 of at least three radiating oscillators 130 respectively. Specifically, the outer conductor of the coaxial cable is connected to the base plate 120, and the inner conductor of the coaxial cable is connected to the angled feeding structure 133 of the radiating oscillator 130; optionally, two rivet holes are provided at the angled feeding structure 133, and the coaxial cable is welded to the rivet holes of the angled feeding structure 133 through riveted copper sheets.

[0032] The base plate 120 is a solid circular structure made of metal, with a diameter set to half the wavelength corresponding to the first frequency band signal. The base plate 120 is used to reflect wireless signals. In one specific implementation of the present invention, the base plate 120 is made of aluminum. In this embodiment of the present invention, due to the reflection effect of the base plate 120, the beam of each radiating element 130 itself exhibits an upward-warping effect, specifically, achieving a coverage elevation angle of 20-40 degrees.

[0033] The radome 110 is configured as a cylindrical structure with an open lower end. The height of the cylindrical structure is greater than the length of the flat plate structure in a direction perpendicular to the base plate 120. The radome 110 is used to protect the internal radiating elements 130. It is understood that the radome 110 described in this embodiment of the utility model is not limited to a cylindrical structure. Any shape of radome 110 is applicable to this solution as long as it can completely cover each radiating element 130.

[0034] The interference antenna further includes a fixing member 140, through which at least three of the radiating elements 130 are respectively mounted on the side of the base plate 120 facing the radome, and the fixing member 140 is made of an insulating material. In a specific implementation of the embodiment of the present invention, the fixing member 140 is made of plastic and includes a first fixing member 140a and a second fixing member 140b, respectively provided on either side of the flat structure of the radiating element 130. Correspondingly, the radiating element 130 is provided with two through-hole structures for fixed connection of the first fixing member 140a and the second fixing member 140b.

[0035] In an optional embodiment, the jamming antenna further includes a mounting bracket 150, which is fixedly connected to the side of the base plate 120 facing away from the radome 110. The mounting bracket 150 is used to be fixedly connected to a device such as a car to securely mount the jamming antenna. The embodiment of the present invention facilitates the installation of the jamming antenna by providing the mounting bracket 150 on the base plate 120.

[0036] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present invention should have the common meanings understood by those skilled in the art to which the embodiments of the present invention belong.

[0037] In the description of the embodiments of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 should not be understood as a limitation on the embodiments of the present invention.

[0038] In addition, the technical terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of the technical features indicated. In the description of the embodiments of the present invention, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0039] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0040] In the description of this embodiment, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An interference antenna, characterized in that: The interference antenna includes a radome, a bottom plate and at least three radiating elements; the radome and the bottom plate are buckled together to form a receiving space for accommodating the at least three radiating elements; the at least three radiating elements are all planar monopole inverted F structures; Among them, at least three of the radiation vibrators are installed on the side of the bottom plate facing the antenna cover, and the at least three radiation vibrators are arranged in a circumferentially equiangular distribution.

2. The jamming antenna according to claim 1, characterized in that The radiating element includes a radiating element, a grounding structure and an angled feeding structure; The radiating element is used to transmit and receive signals in a first frequency band; The grounding structure is used to connect the radiating element and the bottom plate; The angled feeding structure is used to receive feeding, one end of the angled feeding structure is connected to the radiating element, and the other end extends toward the base plate, and a protruding angled structure is provided at the end of the angled feeding structure facing the base plate.

3. The jamming antenna according to claim 2, characterized in that The radiation element is a flat plate structure made of metal material, and the flat plate structure is arranged perpendicular to the bottom plate.

4. The jamming antenna according to claim 3, characterized in that The length of the flat plate structure in a direction perpendicular to the bottom plate is set to be one quarter of the wavelength corresponding to the first frequency band signal.

5. The jamming antenna according to claim 3, characterized in that: The antenna cover is configured as a cylindrical structure with an open lower end, and the height of the cylindrical structure is greater than the length of the flat plate structure in a direction perpendicular to the bottom plate.

6. The jamming antenna according to claim 2, characterized in that: The bottom plate is a solid circular structure made of metal material and is used to reflect wireless signals.

7. The jamming antenna according to claim 6, characterized in that: The diameter of the solid circle structure is set to half of the wavelength corresponding to the first frequency band signal.

8. The jamming antenna according to any one of claims 1 to 7, characterized in that: The interference antenna further includes a fixing member, through which at least three of the radiation elements are respectively mounted on a side of the base plate facing the antenna cover; the fixing member is made of insulating material.

9. The jamming antenna according to any one of claims 1 to 7, characterized in that: The interference antenna also includes a mounting bracket, and the side of the base plate facing away from the antenna cover is fixedly connected to the mounting bracket.

10. The jamming antenna according to any one of claims 1 to 7, characterized in that: The operating frequency band of the interference antenna is 350-1200 MHz, and the radiation gain is 3-8 dB.

Images