A high back lobe suppression horn antenna

Abstract

This invention provides a high backlobe suppression horn antenna, comprising a horn antenna cavity with a choke slot. The horn antenna cavity is installed within a reflector cavity to form a high backlobe suppression horn antenna. This invention uses a simple cabin structure as the reflector cavity, which is more suitable for horn antennas compared to complex cavity structures, and can be assembled with an radome, exhibiting high installation adaptability.

Description

Technical Field

[0001] This application relates to an antenna, and more particularly to a high back lobe suppression horn antenna. Background Technology

[0002] An antenna is a transducer that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium, or vice versa. A high backlobe suppression antenna is an antenna that effectively reduces the backlobe radiation level and enhances the directivity of the main lobe, thereby reducing the reception and transmission of interference signals from non-target directions.

[0003] With the continuous improvement of technology and the rapid development of the communications industry, the requirements for high backlobe suppression antennas are becoming increasingly stringent. Current high backlobe suppression antennas generally achieve suppression through choke slots and reflectors. However, in wideband scenarios, the backlobe suppression effect fluctuates significantly with frequency, making it difficult to stably adapt to multi-band communications. Furthermore, some designs are complex, easily leading to poor impedance matching and introducing additional insertion losses, thus reducing signal transmission efficiency and antenna performance stability. Utility Model Content

[0004] The purpose of this application is to provide a high backlobe suppression horn antenna that stably achieves high backlobe suppression across a wide bandwidth, making the antenna adaptable to multi-band communication scenarios. It also simplifies the structural layout and improves antenna installation adaptability.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] This application provides a high backlobe suppression horn antenna, including a horn antenna cavity with a choke slot. The horn antenna cavity is installed in a reflective cavity to form a high backlobe suppression horn antenna.

[0007] The horn antenna cavity is integrally machined from 6061 aluminum alloy and is fastened to the reflector cavity with screws.

[0008] The choke slot is formed along the edge of the horn opening of the horn antenna cavity.

[0009] The horn opening of the horn antenna cavity is rectangular.

[0010] The reflective cavity adopts a cylindrical structure with an open front end and a closed rear end.

[0011] The rear end of the reflective cavity is sealed by a sealing plate, and an RF connector is installed on the back of the sealing plate.

[0012] The back of the sealing plate is also provided with mounting holes.

[0013] The back of the sealing plate is also provided with reinforcing ribs to increase the strength of the reflective cavity.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This invention employs a combined design of a choke groove and a reflective cavity.

[0016] When electromagnetic waves are transmitted through the horn radiator, the choke slot blocks the unwanted current in the outer arm, initially suppressing the back lobe; the backscattered electromagnetic waves enter the reflecting cavity, are reflected and interfered with by the cavity wall, further weakening the back lobe energy. Simultaneously, the horn radiator...

[0017] The aperture, choke slot size, and reflector cavity size parameters are optimized based on wideband matching requirements to ensure good impedance matching of the antenna in multiple frequency bands, reduce loss, and achieve high back lobe suppression and efficient signal transmission in the 2.7-4GHz range.

[0018] The reflector cavity adopts a simple cabin structure and is connected to the horn radiator through positioning mounting parts, thereby ensuring assembly accuracy. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the back of an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] like Figure 1 and Figure 2 As shown, the purpose of this application is to provide a high backlobe suppression horn antenna, including a horn antenna cavity 1, on which a choke slot 2 is provided, and the horn antenna cavity 1 is installed in a reflector cavity 3 to form a high backlobe suppression horn antenna.

[0025] The horn antenna cavity 1 is integrally machined from 6061 aluminum alloy and is fastened to the reflector cavity 3 with screws.

[0026] The choke slot 2 is formed along the edge of the horn opening of the horn antenna cavity 1.

[0027] The horn opening of the horn antenna cavity 1 is rectangular.

[0028] The reflective cavity 3 adopts a cylindrical structure with an open front end and a closed rear end.

[0029] The rear end of the reflective cavity 3 is sealed by a sealing plate, and an RF connector 4 is installed on the back of the sealing plate.

[0030] The back of the sealing plate is also provided with mounting holes.

[0031] The back of the sealing plate is also provided with reinforcing ribs 5 to increase the strength of the reflective cavity.

[0032] In practical use, the antenna is fixed to the device in use, and the power generating device is connected to the antenna through the RF connector 4 to radiate a highly directional, low-interference signal of 2.7-4GHz.

[0033] This invention employs a combined design of a choke groove and a reflective cavity.

[0034] When electromagnetic waves are transmitted through the horn radiator, the choke slot blocks the unwanted current in the outer arm, initially suppressing the back lobe; the backscattered electromagnetic waves enter the reflecting cavity, are reflected and interfered with by the cavity wall, further weakening the back lobe energy. Simultaneously, the horn radiator...

[0035] The aperture, choke slot size, and reflector cavity size parameters are optimized based on wideband matching requirements to ensure good impedance matching of the antenna in multiple frequency bands, reduce loss, and achieve high back lobe suppression and efficient signal transmission in the 2.7-4GHz range.

[0036] The reflector cavity adopts a simple cabin structure and is connected to the horn radiator through positioning mounting parts, thereby ensuring assembly accuracy.

[0037] This utility model of a high backlobe suppression horn antenna achieves stable high backlobe suppression across a wide frequency band through the synergistic effect of the choke slot and the reflector cavity, making it suitable for multi-band communication scenarios. It uses a simple cabin structure as the reflector cavity, which is more suitable for horn antennas compared to complex cavity structures, and can be assembled with an antenna cover, exhibiting high installation adaptability.

[0038] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A high backlobe suppression horn antenna, characterized in that, It includes a horn antenna cavity, on which a choke slot is provided, and the horn antenna cavity is installed in a reflective cavity to form a high back lobe suppression horn antenna.

2. The high backlobe suppression horn antenna according to claim 1, characterized in that, The horn antenna cavity is integrally machined from 6061 aluminum alloy and is fastened to the reflector cavity with screws.

3. The high backlobe suppression horn antenna according to claim 1, characterized in that, The choke slot is formed along the edge of the horn opening of the horn antenna cavity.

4. A high backlobe suppression horn antenna according to claim 1, characterized in that, The horn opening of the horn antenna cavity is rectangular.

5. A high backlobe suppression horn antenna according to claim 1, characterized in that, The reflective cavity adopts a cylindrical structure with an open front end and a closed rear end.

6. A high backlobe suppression horn antenna according to claim 5, characterized in that, The rear end of the reflective cavity is sealed by a sealing plate, and an RF connector is installed on the back of the sealing plate.

7. A high backlobe suppression horn antenna according to claim 6, characterized in that, The back of the sealing plate is also provided with mounting holes.

8. A high backlobe suppression horn antenna according to claim 7, characterized in that, The back of the sealing plate is also provided with reinforcing ribs to increase the strength of the reflective cavity.

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