Flexible horn mouth structure for microwave detection

Abstract

The utility model relates to a flexible horn mouth structure for microwave detection. The flexible horn mouth structure comprises a first folding sheet (1), a second folding sheet (2), a third folding sheet (3) and a fourth folding sheet (4) which are connected in sequence, the first folding piece (1), the second folding piece (2), the third folding piece (3) and the fourth folding piece (4) are all in an isosceles trapezoid shape, the waist portion of the first folding piece (1) is connected with the waist portion of the second folding piece (2) through a first folding mark (5), the waist portion of the second folding piece (2) is connected with the waist portion of the third folding piece (3) through a second folding mark (6), and the waist portion of the third folding piece (3) is connected with the waist portion of the fourth folding piece (4) through a third folding mark (7). Compared with the prior art, the flexible horn mouth structure can be flatly laid and is easy to carry.

Description

Technical Field

[0001] This utility model relates to the field of microwave detection technology, and in particular to a flexible horn-shaped structure for microwave detection. Background Technology

[0002] In microwave testing, the horn antenna acts as a waveguide, emitting waveguide signals. From an impedance matching perspective, the antenna is essentially an impedance converter, transmitting signals from the transmission line to free space (377 ohms). A common microwave transmission line is the waveguide horn antenna, a widely used antenna due to its simple structure, wide bandwidth, high power capacity, and high gain. Horn antennas are frequently used as feed antennas in large-scale radio astronomy, satellite tracking, and communication applications.

[0003] A loudspeaker is essentially a gradient waveguide that increases the radiating aperture, resulting in higher gain. It is also simple to manufacture, has stable performance, and can produce a good radiation pattern even in harsh environments. For example, a common loudspeaker with an aperture of 78.81mm*58.38mm and an axial length of 37.47mm produces a waveguide aperture of 22.86mm*10.16mm.

[0004] To obtain other non-standard waveguide apertures, the aperture and axial length of the horn need to be changed during the actual testing process. Generally, users need to carry multiple horn ports to test waveguides at different frequencies. Utility Model Content

[0005] The purpose of this invention is to provide a flexible horn-shaped structure for microwave detection that can be laid flat and is easy to carry.

[0006] The objective of this utility model can be achieved through the following technical solution: a flexible horn-shaped structure for microwave detection, comprising a first folded piece, a second folded piece, a third folded piece, and a fourth folded piece connected in sequence;

[0007] The first, second, third, and fourth folded pieces are all isosceles trapezoids. The waists of the first and second folded pieces are connected by a first crease, the waists of the second and third folded pieces are connected by a second crease, and the waists of the third and fourth folded pieces are connected by a third crease.

[0008] Preferably, the first folded piece and the third folded piece are identical isosceles trapezoids, the second folded piece and the fourth folded piece are identical isosceles trapezoids, and the upper base (short base) of each isosceles trapezoid is located on the inward side, and the lower base (long base) is located on the outward side.

[0009] Preferably, the first folded piece, the second folded piece, the third folded piece, and the fourth folded piece can be folded together through the first fold, the second fold, and the third fold to form a pyramidal horn structure.

[0010] Preferably, the first folded piece has two first waist creases that are parallel to the two sides of the waist, and a first middle crease is provided between the two first waist creases;

[0011] The third fold piece has two third waist folds that are parallel to the two sides of the waist, and a third middle fold is provided between the two third waist folds.

[0012] The first folded piece, the second folded piece, the third folded piece, and the fourth folded piece can be folded together through the first crease, the second crease, the third crease, the first waist crease, the first middle crease, the third waist crease, and the third middle crease to form an E-shaped fan-shaped trumpet structure.

[0013] More preferably, the distance between the two first waist creases on the first fold piece and the corresponding side waist of the first fold piece is equal, and they intersect at the middle of the upper bottom, with the first middle crease passing through the intersection of the two first waist creases at the upper bottom;

[0014] The distance between the two third waist creases on the third fold piece and the corresponding side waist of the third fold piece is equal, and they intersect at the middle of the upper bottom. The third middle crease passes through the intersection of the two third waist creases at the upper bottom.

[0015] Preferably, the second folded piece has two second waist creases that are parallel to the two sides of the waist, and a second middle crease is provided between the two second waist creases;

[0016] The fourth fold piece has two fourth waist folds that are parallel to the two sides of the waist, and a fourth middle fold is provided between the two fourth waist folds.

[0017] The first folded piece, the second folded piece, the third folded piece, and the fourth folded piece can be folded together through the first crease, the second crease, the third crease, the second waist crease, the second middle crease, the fourth waist crease, and the fourth middle crease to form an H-shaped fan-shaped trumpet structure.

[0018] More preferably, the distance between the two second waist creases on the second fold piece and the corresponding side waist of the second fold piece is equal, and they intersect at the middle of the upper bottom, and the second middle crease passes through the intersection of the two second waist creases at the upper bottom;

[0019] The distance between the two fourth waist creases on the fourth fold piece and the corresponding side waist of the fourth fold piece is equal, and they intersect at the middle of the upper bottom. The fourth middle crease passes through the intersection of the two fourth waist creases at the upper bottom.

[0020] Preferably, the first folded piece, the second folded piece, the third folded piece, and the fourth folded piece are folded to form a horn structure, and the small-diameter part of the horn structure is connected to a rectangular waveguide.

[0021] Preferably, the first folded piece, the second folded piece, the third folded piece, and the fourth folded piece are integrally formed, and the first crease, the second crease, and the third crease are obtained by stamping.

[0022] Preferably, the first crease, the second crease, and the third crease are of equal length to and coincide with the waist of the isosceles trapezoid.

[0023] Preferably, the first folded piece, the second folded piece, the third folded piece, and the fourth folded piece are made of one or an alloy of aluminum, silver, copper, zinc, nickel, and titanium.

[0024] More preferably, the first, second, third, and fourth folded sheets are made of aluminum or an aluminum-copper-zinc alloy. Aluminum and aluminum-copper-zinc alloys possess relatively soft metallic properties and excellent electrical conductivity. They are lightweight, have good sound absorption, high ductility, and low density. Furthermore, since they are non-magnetic, they do not generate additional magnetic fields and can be repeatedly used without concern for magnetization. Additionally, aluminum-copper-zinc materials exhibit certain shape memory properties, meaning they can be reshaped by external force to meet on-site structural requirements. After use, the structure can be restored to its original shape by heating due to the one-way shape memory effect. This property allows for repeated use. If cost is not a concern, more expensive nickel-titanium alloys can also be used.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The flexible flared mouth structure of this utility model can be laid flat and is easy to carry;

[0027] 2. The flexible flared mouth of this utility model can be laid flat when not in use, making it easy to carry; when in use, it is easy to fold and assemble, resulting in high efficiency.

[0028] 3. This utility model, through the design of fold lines, can guide users to fold and assemble it into a corresponding horn antenna. It has a simple structure, is easy to install, and has high reliability.

[0029] 4. This utility model allows users to carry multiple horn ports to test waveguides of different frequencies as needed, thereby improving work efficiency;

[0030] 5. The folding piece of this utility model is made of materials such as aluminum and silver, and has high replaceability and portability. Attached Figure Description

[0031] Figure 1This is a plan view of the flexible flared structure in Example 1;

[0032] Figure 2 This is a schematic diagram of the folded installation state of the flexible flared structure in Example 1;

[0033] Figure 3 This is a schematic diagram of the folded installation state of the flexible flared structure in Example 2;

[0034] Figure 4 This is a plan view of the flexible flared structure in Example 2;

[0035] Figure 5 This is a detailed view of the flexible flared structure in Example 2;

[0036] Figure 6 This is a side view of the flexible flared structure in Example 2;

[0037] Figure 7 This is a schematic diagram of the folded installation state of the flexible flared structure in Example 3;

[0038] Figure 8 This is a plan view of the flexible flared structure in Example 3;

[0039] Figure 9 This is a detailed view of the flexible flared structure in Example 3;

[0040] In the figure: 1-first folded piece, 11-first waist crease, 12-first middle crease, 2-second folded piece, 3-third folded piece, 31-third waist crease, 32-third middle crease, 4-fourth folded piece, 41-fourth waist crease, 42-fourth middle crease, 5-first crease, 6-second crease, 7-third crease, 8-rectangular waveguide. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] Example 1

[0045] A flexible horn-shaped structure for microwave detection, such as Figure 1 As shown, it includes a first folded piece 1, a second folded piece 2, a third folded piece 3, and a fourth folded piece 4.

[0046] The first fold piece 1, the second fold piece 2, the third fold piece 3, and the fourth fold piece 4 are all isosceles trapezoids and are connected sequentially by waist creases. Specifically, the first fold piece 1 and the second fold piece 2 are connected on one side of their waists by the first crease 5, the second fold piece 2 and the third fold piece 3 are connected on one side of their waists by the second crease 6, and the third fold piece 3 and the fourth fold piece 4 are connected on one side of their waists by the third crease 7.

[0047] In this embodiment, all folding pieces are made of aluminum, which is relatively soft and easy to fold.

[0048] When microwave testing is required, the first folded piece 1, the second folded piece 2, the third folded piece 3, and the fourth folded piece 4 are folded along the first crease 5, the second crease 6, and the third crease 7 to form a shape as shown. Figure 2 The pyramidal horn structure is shown, and then the small-diameter part of the pyramidal horn structure is fixed to the output end of the rectangular waveguide 8, ensuring that it is on the same axis as the rectangular waveguide 8. The rectangular waveguide opens at a certain angle in both electric and magnetic field directions to form a pyramidal horn antenna. During the detection process, the rectangular waveguide 8 acts as the transmitting end, continuously emitting microwaves.

[0049] Example 2

[0050] A flexible horn-shaped structure for microwave detection can be formed as follows: Figure 3 The E-plane sector-shaped horn antenna shown.

[0051] Specifically, such as Figure 4 As shown, it includes a first folded piece 1, a second folded piece 2, a third folded piece 3, and a fourth folded piece 4. Each of these pieces is an isosceles trapezoid and is connected sequentially via waist creases. The first folded piece 1 is connected to the second folded piece 2 on one side of its waist via a first crease 5; the second folded piece 2 is connected to the third folded piece 3 on one side of its waist via a second crease 6; and the third folded piece 3 is connected to the fourth folded piece 4 on one side of its waist via a third crease 7.

[0052] Furthermore, in this embodiment, the first folding piece 1 has two first waist creases 11 parallel to the two sides of the waist, the two first waist creases 11 are equidistant from the corresponding sides of the waist, and intersect at the middle of the upper bottom. A first middle crease 12 is provided between the two first waist creases 11, penetrating the upper and lower bottoms of the first folding piece 1 and passing through the intersection of the upper bottoms of the two first waist creases 11. The third folding piece 3 has two third waist creases 31 parallel to the two sides of the waist, the two third waist creases 31 are equidistant from the corresponding sides of the waist, and intersect at the middle of the upper bottom. A third middle crease 32 is provided between the two third waist creases 31, penetrating the upper and lower bottoms of the third folding piece 3 and passing through the intersection of the upper bottoms of the two third waist creases 31. All folding pieces are made of aluminum, which is relatively soft and easy to fold.

[0053] In this embodiment, the first folding piece 1 and the third folding piece 3 are divided into four pieces by creases. Taking the third folding piece 3 as an example, it includes four pieces a, b, c, and d. When in use, the aluminum pieces b and c can be folded together along the axis (third middle crease 32) and folded outwards.

[0054] When microwave testing is required, the first folded piece 1, the second folded piece 2, the third folded piece 3, and the fourth folded piece 4 are folded together using the first crease 5, the second crease 6, the third crease 7, the first waist crease 11, the first middle crease 12, the third waist crease 31, and the third middle crease 32 to form the structure shown below. Figures 5-6 The E-plane sector-shaped horn structure is shown. The smaller diameter portion of the E-plane sector-shaped horn structure is then fixed to the output end of the rectangular waveguide 8, ensuring it is coaxial with the rectangular waveguide 8. The rectangular waveguide opens at a certain angle in the electric field direction, forming the E-plane sector-shaped horn antenna. During the testing process, the rectangular waveguide 8 acts as the transmitting end, continuously emitting microwaves.

[0055] Example 3

[0056] A flexible horn-shaped structure for microwave detection can be formed as follows: Figure 7 The H-plane sector-shaped horn antenna shown.

[0057] Specifically, such as Figure 8 As shown, it includes a first folded piece 1, a second folded piece 2, a third folded piece 3, and a fourth folded piece 4. Each of these pieces is an isosceles trapezoid and is connected sequentially via waist creases. The first folded piece 1 is connected to the second folded piece 2 on one side of its waist via a first crease 5; the second folded piece 2 is connected to the third folded piece 3 on one side of its waist via a second crease 6; and the third folded piece 3 is connected to the fourth folded piece 4 on one side of its waist via a third crease 7.

[0058] Furthermore, in this embodiment, the second folding piece 2 has two second waist creases 21 parallel to the two sides of the waist. The distance between the two second waist creases 21 and the corresponding side waist is the same, and they intersect at the middle of the upper bottom. A second middle crease 22 is provided between the two second waist creases 21, and the second middle crease 22 passes through the upper and lower bottoms of the second folding piece 2 and passes through the intersection point of the upper bottom of the two second waist creases 21. The fourth folding piece 4 has two fourth waist creases 41 parallel to the two sides of the waist. The distance between the two fourth waist creases 41 and the corresponding side waist is the same, and they intersect at the middle of the upper bottom. A fourth middle crease 42 is provided between the two fourth waist creases 41, and the fourth middle crease 42 passes through the upper and lower bottoms of the fourth folding piece 4 and passes through the intersection point of the upper bottom of the two fourth waist creases 41. All folding pieces are made of aluminum, which is relatively soft and easy to fold.

[0059] In this embodiment, the second folded piece 2 and the fourth folded piece 4 are divided into four pieces by fold lines. Taking the fourth folded piece 4 as an example, it includes four pieces: e, f, g, and h. When in use, the f-th and g-th aluminum pieces can be folded together along the axis (fourth middle fold line 42) and folded outwards.

[0060] When microwave testing is required, the first folded piece 1, the second folded piece 2, the third folded piece 3, and the fourth folded piece 4 are folded together using the first crease 5, the second crease 6, the third crease 7, the second waist crease 21, the second middle crease 22, the fourth waist crease 41, and the fourth middle crease 42 to form the structure shown below. Figure 9 The H-plane sector-shaped horn structure is shown. The smaller diameter portion of the H-plane sector-shaped horn structure is then fixed to the output end of the rectangular waveguide 8, ensuring it is coaxial with the rectangular waveguide 8. The rectangular waveguide opens at a certain angle in the magnetic field direction, forming the H-plane sector-shaped horn antenna. During the testing process, the rectangular waveguide 8 acts as the transmitting end, continuously emitting microwaves.

[0061] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A flexible horn-shaped structure for microwave detection, characterized in that, It includes a first folded piece (1), a second folded piece (2), a third folded piece (3), and a fourth folded piece (4) connected in sequence; The first folded piece (1), the second folded piece (2), the third folded piece (3) and the fourth folded piece (4) are all isosceles trapezoids. The waist of the first folded piece (1) and the second folded piece (2) are connected by the first crease (5), the waist of the second folded piece (2) and the third folded piece (3) are connected by the second crease (6), and the waist of the third folded piece (3) and the fourth folded piece (4) are connected by the third crease (7).

2. The flexible horn-shaped structure for microwave detection according to claim 1, characterized in that, The first folded piece (1) and the third folded piece (3) are identical isosceles trapezoids, the second folded piece (2) and the fourth folded piece (4) are identical isosceles trapezoids, and the upper base of each isosceles trapezoid is located on the inward side, and the lower base is located on the outward side.

3. The flexible horn-shaped structure for microwave detection according to claim 1, characterized in that, The first folded piece (1), the second folded piece (2), the third folded piece (3) and the fourth folded piece (4) can be folded through the first crease (5), the second crease (6) and the third crease (7) to form a pyramidal trumpet structure.

4. The flexible horn-shaped structure for microwave detection according to claim 1, characterized in that, The first folding piece (1) has two first waist creases (11) that are parallel to the two sides of the waist respectively, and a first middle crease (12) is provided between the two first waist creases (11); The third fold piece (3) has two third waist folds (31) that are parallel to the two sides of the waist respectively, and a third middle fold (32) is provided between the two third waist folds (31). The first folded piece (1), the second folded piece (2), the third folded piece (3) and the fourth folded piece (4) can be folded through the first crease (5), the second crease (6), the third crease (7), the first waist crease (11), the first middle crease (12), the third waist crease (31) and the third middle crease (32) to form an E-shaped fan-shaped trumpet structure.

5. The flexible horn-shaped structure for microwave detection according to claim 4, characterized in that, The distance between the two first waist creases (11) on the first fold piece (1) and the corresponding side waist of the first fold piece (1) is equal, and they intersect at the middle of the upper bottom. The first middle crease (12) passes through the intersection of the two first waist creases (11) at the upper bottom. The distance between the two third waist creases (31) on the third fold piece (3) and the corresponding side waist of the third fold piece (3) is equal, and they intersect at the middle of the upper bottom. The third middle crease (32) passes through the intersection of the two third waist creases (31) at the upper bottom.

6. The flexible horn-shaped structure for microwave detection according to claim 1, characterized in that, The second fold piece (2) has two second waist creases (21) that are parallel to the two sides of the waist respectively, and a second middle crease (22) is provided between the two second waist creases (21); The fourth fold piece (4) has two fourth waist folds (41) that are parallel to the two sides of the waist respectively, and a fourth middle fold (42) is provided between the two fourth waist folds (41). The first folded piece (1), the second folded piece (2), the third folded piece (3) and the fourth folded piece (4) can be folded through the first crease (5), the second crease (6), the third crease (7), the second waist crease (21), the second middle crease (22), the fourth waist crease (41) and the fourth middle crease (42) to form an H-shaped fan-shaped trumpet structure.

7. The flexible horn-shaped structure for microwave detection according to claim 6, characterized in that, The distance between the two second waist creases (21) on the second fold piece (2) and the corresponding side waist of the second fold piece (2) is equal, and they intersect at the middle of the upper bottom. The second middle crease (22) passes through the intersection of the two second waist creases (21) at the upper bottom. The distance between the two fourth waist creases (41) on the fourth fold piece (4) and the corresponding side waist of the fourth fold piece (4) is equal, and they intersect at the middle of the upper bottom. The fourth middle crease (42) passes through the intersection of the two fourth waist creases (41) at the upper bottom.

8. The flexible horn-shaped structure for microwave detection according to claim 1, characterized in that, The first folded piece (1), the second folded piece (2), the third folded piece (3) and the fourth folded piece (4) are folded to form a horn structure, and the small-diameter part of the horn structure is connected to the rectangular waveguide (8).

9. The flexible horn-shaped structure for microwave detection according to claim 1, characterized in that, The first folded piece (1), the second folded piece (2), the third folded piece (3) and the fourth folded piece (4) are integrally formed, and the first crease (5), the second crease (6) and the third crease (7) are obtained by stamping.

10. The flexible horn-shaped structure for microwave detection according to claim 1, characterized in that, The first folded piece (1), the second folded piece (2), the third folded piece (3) and the fourth folded piece (4) are made of one or an alloy of aluminum, silver, copper, zinc, nickel and titanium.

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