A back-fed dual-ridged horn antenna

Abstract

The utility model discloses a back -feed type double ridge horn antenna relates to horn antenna technical field, including support mainboard, two horn extension subassembly, two horn extension subassembly symmetry set up in the both sides of support mainboard, the utility model discloses a back -feed type energy combines structure has been adopted, and the feed path does not need to pass through the extension horn aperture gradual change length to realize wide frequency band matching, only through the phase compensation of air cavity and feed back -turning combined cavity can realize the port matching in full bandwidth, can therefore effectively shorten horn overall length, reduces the overall size of antenna while satisfying wide frequency band matching requirement, that is, effectively realizes the solution to the shortcomings that the existing horn antenna is met wide flat band matching requirement and leads to the big size of antenna overall. In addition, the back -feed structure is arranged at the back of the horn opening end, does not block the radiation path, effectively avoids the directional diagram distortion problem of traditional front -feed structure, improves the radiation efficiency and directional diagram stability of antenna.

Description

Technical Field

[0001] This utility model relates to the field of horn antenna technology, and in particular to a back-feeded double-ridge horn antenna. Background Technology

[0002] Double-ridged horn antennas, with their advantages of wide operating bandwidth, high power capacity, and stable radiation pattern, are widely used in various fields such as broadband antenna measurement, target detection and identification, and electromagnetic compatibility testing. With the rapid development of electronic information technology, the industry has placed higher demands on antenna operating bandwidth, port matching characteristics, gain flatness, and overall structural compactness.

[0003] Existing traditional feedforward dual-ridge horn antennas typically have their feed structure positioned on the signal propagation path at the horn aperture. The feed components themselves can block radiated electromagnetic waves, easily causing pattern distortion and reducing the antenna's radiation efficiency. Furthermore, to meet wideband matching requirements, traditional structures often require extending the gradient length of the horn aperture section, resulting in a larger overall antenna size, making it difficult to adapt to applications with strict space constraints. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing horn antennas, which result in an excessively large overall antenna size due to the need to meet wide-bandgap matching requirements, and to propose a back-feeded double-ridge horn antenna.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A back-fed double-ridged horn antenna, comprising: Supports motherboard; Two speaker expansion components are symmetrically arranged on both sides of the supporting motherboard; Two supporting side plates are disposed at both ends of the supporting main board, and the supporting side plates and the speaker expansion assembly form an installation space on the supporting main board; A power supply connection assembly is disposed within an installation space, and the power supply connection assembly includes: Multiple connectors are disposed through the support motherboard and are arranged in parallel on the support motherboard. The connectors are used for antenna energy input. Multiple power supply pins are disposed in the connector and extend into the mounting space; Multiple mounting plates are arranged in parallel inside the two side plates; Multiple power supply left ridges are respectively disposed on one side of multiple mounting plates. One end of each power supply left ridge has a protrusion, and the other end descends and then rises to connect with the protrusion. Multiple power supply right ridges are respectively disposed on the other side of the multiple mounting plates. One end of each power supply right ridge is provided with a cavity, and the other end extends upward to connect with the cavity above it. The concave cavity and the protrusion form an air cavity between two adjacent mounting plates. The right feed ridge and the left feed ridge are provided with a feed return merging cavity between two adjacent mounting plates. The feed needle extends to the point where the air cavity and the feed return merging cavity communicate.

[0006] In one feasible embodiment, the speaker expansion component includes: Side plate, the side plate is disposed on one side of the support main board, the side plate is detachably connected to the support main board, and the two side plates are symmetrically arranged on both sides of the support main board; A speaker panel, which is connected to the two side panels, and the speaker panel is located on the side panels away from the main support plate; Among them, the two speaker plates in the two speaker expansion assemblies are in a horn-opening and closing shape on the two side plates.

[0007] In one feasible embodiment, the speaker expansion component further includes: Multiple connecting blocks are respectively connected to the outer side of the side plate and the horn plate. One end of each connecting block is attached to the outer side of the side plate and the outer side of the horn plate. The multiple connecting blocks are respectively connected to the side plate and the horn plate.

[0008] In one feasible solution, the air cavity and the power feed foldback merging cavity are vertically connected.

[0009] In one feasible embodiment, the mounting plate is connected to the supporting mainboard via the side plate.

[0010] In one feasible solution, the air cavity and the combined feeding return cavity have an aluminum alloy wall.

[0011] The beneficial effects of this utility model are as follows: This invention employs a back-feed foldback energy combining structure. The feed path does not require extending the horn aperture to achieve wideband matching; port matching across the entire bandwidth is achieved solely through phase compensation of the air cavity and the feed foldback combining cavity. Therefore, the overall horn length can be effectively shortened, reducing the overall antenna size while meeting wideband matching requirements. This effectively solves the problem of existing horn antennas having a large overall size due to the need to meet wideband matching requirements. Furthermore, the back-feed structure is located behind the horn aperture, preventing obstruction of the radiation path and effectively avoiding the pattern distortion problem of traditional front-feed structures, thus improving the antenna's radiation efficiency and pattern stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a feedback dual-ridge horn antenna provided in an embodiment of this utility model; Figure 2 This is an exploded view of the overall structure of a feedback dual-ridge horn antenna provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the air cavity structure in a feedback dual-ridge horn antenna provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the energy feedback of the feed needle in a rear-feeded double-ridged horn antenna provided in an embodiment of the present invention; Figure 5 This is an enlarged schematic diagram of the energy feedback of the feed needle in a rear-feed double-ridged horn antenna provided in an embodiment of this utility model.

[0013] The markings in the diagram are as follows: 1. Speaker expansion assembly; 11. Side panel; 12. Connecting block; 13. Speaker board; 2. Supports motherboard; 3. Support side panels; 4. Connecting power supply assembly; 41. Connector; 411. Power supply pin; 42. Mounting plate; 421. Power supply left ridge; 422. Power supply right ridge; 43. Power supply foldback merging cavity; 44. Air cavity. Detailed Implementation

[0014] 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 some embodiments of the present utility model, and not all embodiments. 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.

[0015] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0018] Reference Figures 1 to 5In this embodiment, to address the drawback of existing horn antennas having an excessively large overall size due to the need to meet wide-bandwidth matching requirements, this invention provides a rear-fed dual-ridge horn antenna. The horn antenna includes: two side plates 11, two horn plates 13, two supporting side plates 3, a supporting main plate 2, and a connecting feed assembly 4. The supporting main plate 2 is flat. The two side plates 11 are symmetrically arranged on both sides of the supporting main plate 2, and the two side plates 11 are detachably connected to the supporting main plate 2 via bolts. The two horn plates 13 are connected to the two side plates 11 respectively, and are located away from the supporting main plate 2. The two horn plates 13 are arranged in a horn-like opening and closing shape on the two side plates 11, forming a horn extension assembly 1. The horn plates 13 are used to increase the antenna gain and simultaneously narrow the beamwidth of the antenna's elevation plane. The connecting feed assembly 4 is disposed through the supporting main plate 2 and extends into the two side plates 11. The connecting feed assembly 4 is used for antenna energy feedback. Specifically, the connection feeding assembly 4 includes: multiple connectors 41, multiple feeding pins 411, multiple mounting plates 42, multiple left feeding ridges 421, and multiple right feeding ridges 422. The multiple connectors 41 are disposed through the main support plate 2, and are arranged parallel to each other on the main support plate 2. The connectors 41 are used for antenna energy input. The multiple feeding pins 411 are respectively disposed in the connectors 41, and extend into the interior of the two side plates 11. The multiple mounting plates 42 are arranged parallel to each other inside the two side plates 11. The multiple mounting plates 42 are respectively detachably connected to the two side plates 11 by bolts, and are connected to the main support plate 2 through the side plates 11. The multiple left feeding ridges 421 are respectively disposed on one side of the multiple mounting plates 42. One end of each left feeding ridge 421 has a protrusion (not shown in the figure), and the other end descends and then rises to connect with the protrusion. Multiple feed right ridges 422 are respectively disposed on the other side of multiple mounting plates 42. One end of each feed right ridge 422 has a recess (not shown in the figure), and the other end extends upward to connect with the recess above it. The recess and the protrusion form an air cavity 44 between two adjacent mounting plates 42. The feed right ridge 422 and the feed left ridge 421 form a feed return and merging cavity 43 between two adjacent mounting plates 42. The air cavity 44 and the feed return and merging cavity 43 are vertically distributed and connected. The feed needle 411 extends to the point where the air cavity 44 and the feed return and merging cavity 43 connect. That is, in this embodiment, as... Figure 4As shown, the feed needle 411 can be input to the connection point between the air cavity 44 and the feed foldback merging cavity 43 via connector 41. At this time, the feed needle 411 transmits antenna energy to the connection point between the air cavity 44 and the feed foldback merging cavity 43 for energy feedback. A portion of the energy from the feed needle 411 is directly fed back to the feed foldback merging cavity 43 (i.e., Figure 5 In path A), another portion of the energy is first fed back into the energy cavity, and then fed back through the air cavity 44 to the feed foldback and merging cavity 43 for energy merging (i.e., Figure 5 The energy from paths A and B is calibrated in phase within the feed foldback merging cavity 43 before being output to the opening of the horn extension component 1 for radiation. In this embodiment, by employing a back-feed foldback energy merging structure, the feed path does not need to extend the horn aperture gradient length to achieve wideband matching. Port matching across the entire bandwidth can be achieved solely through phase compensation of the air cavity 44 and the feed foldback merging cavity 43. Therefore, the overall length of the horn can be effectively shortened, reducing the overall antenna size while meeting wideband matching requirements. This effectively solves the problem of existing horn antennas having a large overall size due to the need to meet wideband matching requirements. Furthermore, the back-feed structure is located behind the horn opening, preventing obstruction of the radiation path and effectively avoiding the pattern distortion problem of traditional feedforward structures, thus improving the antenna's radiation efficiency and pattern stability. In a preferred embodiment, to ensure feeding performance, the length of the air cavity 44 is 1 / 4 wavelength of the center frequency, which can be adjusted according to actual conditions. Furthermore, the gap length between the left feed ridge 421 and the right feed ridge 422 at the connection point between the air cavity 44 and the feed foldback merging cavity 43 is 1 / 10 of the center frequency, which can be modified according to the actual situation. Secondly, the air cavity 44 and the feed foldback merging cavity 43 can be made of smooth aluminum alloy wall material, so that the input energy of the feed needle 411 is reflected by the air cavity 44 and the feed foldback merging cavity 43 and then superimposed forward and radiated out together.

[0019] Reference Figure 3As shown, in this embodiment, two supporting side plates 3 are respectively disposed at both ends of the supporting main board 2, and the two supporting side plates 3 are disposed between the two ends of the two side plates 11. The supporting side plates 3, supporting column plates, and side plates 11 together form an installation space (not shown in the figure) that can accommodate the mounting plate 42, the left feed ridge 421, and the right feed ridge 422. It should be noted that, in order to ensure normal antenna energy feeding, the two supporting side plates 3 are respectively provided with a left feed ridge 421 and a right feed ridge 422 on their adjacent sides. The left feed ridge 421 on one supporting side plate 3 and the right feed ridge 422 on the adjacent mounting plate 42 form a back-feedback energy merging structure, and the right feed ridge 422 on the other supporting side plate 3 and the left feed ridge 421 on the adjacent mounting plate 42 form a back-feedback energy merging structure, so as to ensure that the mounting plates 42 at both ends of the supporting main board 2 can also form a back-feedback energy merging structure. In addition, the supporting side plate 3 is used to reinforce the overall structure, preventing the side plate 11 from loosening or deforming during transportation and use, thus ensuring the stability of the antenna structure and further guaranteeing the consistency of the antenna's electrical performance. Those skilled in the art can adjust the size of the air cavity 44 and the gradient curve parameters of the left feed ridge 421 and the right feed ridge 422 according to the actual operating bandwidth requirements to adapt to different application scenarios.

[0020] Reference Figure 1 and Figure 2 As shown, in this embodiment, to facilitate the connection and installation between the side plate 11 and the horn plate 13, multiple connecting blocks 12 are included. Multiple connecting blocks 12 are provided between the side plate 11 and the horn plate 13, and are respectively connected to the outer sides of the side plate 11 and the horn plate 13. One end of each connecting block 12 is attached to the outer side of the side plate 11, and the other end is attached to the outer side of the horn plate 13. The multiple connecting blocks 12 are respectively connected to the side plate 11 and the horn plate 13 by bolts. That is, in this embodiment, the side plate 11 and the horn plate 13 are first assembled into a single horn expansion assembly 1 using the connecting blocks 12. Then, the two horn expansion assemblies 1 are arranged in a mirror-symmetrical manner, forming a horn antenna structure with the supporting main board 2 and the supporting side plate 3. Preferably, after the side plate 11 and the horn plate 13 are connected and positioned using the connecting blocks 12, they are welded together to facilitate the connection and installation between the side plate 11 and the horn plate 13.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A back-fed double-ridged horn antenna, characterized in that, include: Supports motherboard; Two speaker expansion components are symmetrically arranged on both sides of the supporting motherboard; Two supporting side plates are disposed at both ends of the supporting main board, and the supporting side plates and the speaker expansion assembly form an installation space on the supporting main board; A power supply connection assembly is disposed within an installation space, and the power supply connection assembly includes: Multiple connectors are disposed through the support motherboard and are arranged in parallel on the support motherboard. The connectors are used for antenna energy input. Multiple power supply pins are disposed in the connector and extend into the mounting space; Multiple mounting plates are arranged in parallel inside the two side plates; Multiple power supply left ridges are respectively disposed on one side of multiple mounting plates. One end of each power supply left ridge has a protrusion, and the other end descends and then rises to connect with the protrusion. Multiple power supply right ridges are respectively disposed on the other side of the multiple mounting plates. One end of each power supply right ridge is provided with a cavity, and the other end extends upward to connect with the cavity above it. The concave cavity and the protrusion form an air cavity between two adjacent mounting plates. The right feed ridge and the left feed ridge are provided with a feed return merging cavity between two adjacent mounting plates. The feed needle extends to the point where the air cavity and the feed return merging cavity communicate.

2. The back-fed double-ridged horn antenna according to claim 1, characterized in that, The speaker expansion component includes: Side plate, the side plate is disposed on one side of the support main board, the side plate is detachably connected to the support main board, and the two side plates are symmetrically arranged on both sides of the support main board; A speaker panel, which is connected to the two side panels, and the speaker panel is located on the side panels away from the main support plate; Among them, the two speaker plates in the two speaker expansion assemblies are in a horn-opening and closing shape on the two side plates.

3. A back-feeded double-ridged horn antenna according to claim 2, characterized in that, The speaker expansion component also includes: Multiple connecting blocks are respectively connected to the outer side of the side plate and the horn plate. One end of each connecting block is attached to the outer side of the side plate and the outer side of the horn plate. The multiple connecting blocks are respectively connected to the side plate and the horn plate.

4. A back-fed double-ridged horn antenna according to claim 1, characterized in that, The air cavity and the power feed return and merging cavity are connected vertically.

5. A back-fed double-ridged horn antenna according to claim 2, characterized in that, The mounting plate is connected to the supporting main board via the side plate.

6. A back-fed double-ridged horn antenna according to claim 1, characterized in that, The air cavity and the combined feeding return cavity have aluminum alloy walls.

Images