Resonant cavity antenna

Abstract

A resonant cavity antenna comprises a circuit substrate, a cable, a metal box body and a protective sleeve, the circuit substrate is provided with an upper surface and a lower surface which are opposite, the lower surface is provided with a plurality of radiation parts, one side of the metal box body is provided with an opening and is installed on the lower surface of the circuit substrate, and therefore a resonant cavity is formed. One end of the cable is connected to the circuit substrate and penetrates through the metal box body to extend outwards; and the protective sleeve wraps the outer side surface of the metal box body but does not wrap the lower surface of the metal box body and wraps the upper surface of the circuit substrate, so that the resonant cavity antenna presents an attractive appearance, and meanwhile, the transceiving efficiency of the resonant cavity antenna is not influenced.

Description

[Technical Field]

[0001] This utility model relates to a resonant cavity antenna. [Background Technology]

[0002] The applicant's earlier utility model CN219717262U1 disclosed an antenna comprising a substrate, a first radiator and a second radiator disposed on the upper surface of the substrate, and a metal housing. The metal housing has an opening on its bottom surface, and the bottom surface of the metal housing is mounted on the upper surface of the substrate and covers the first and second radiators, thereby forming a resonant cavity. However, in practical use, it is not aesthetically pleasing.

[0003] Therefore, it is necessary to provide an improved resonant cavity antenna. [Utility Model Content]

[0004] The main purpose of this invention is to provide a resonant cavity antenna with a flexible appearance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a resonant cavity antenna, comprising a circuit board, a cable, a metal housing, and a protective sleeve. The circuit board has opposing upper and lower surfaces, and the lower surface is provided with multiple radiating portions. One side of the metal housing is open and is mounted on the lower surface of the circuit board, thereby forming a resonant cavity. One end of the cable is connected to the circuit board and extends outward through the metal housing. The protective sleeve wraps around the outer surface of the metal housing but does not wrap around the lower surface of the metal housing, and covers the upper surface of the circuit board.

[0006] Compared with the prior art, the resonant cavity antenna of this utility model has an added protective sleeve on the outer surface, which can change the color of the metal box and present an aesthetically pleasing appearance, without affecting its transmission and reception efficiency. [Attached Image Description]

[0007] Figure 1 This is a three-dimensional view of the resonant cavity antenna of this utility model.

[0008] Figure 2 yes Figure 1 A three-dimensional view from another angle.

[0009] Figure 3 yes Figure 1 Partially exploded diagram.

[0010] Figure 4 yes Figure 1 The exploded diagram.

[0011] [Component Symbol Explanation]

[0012]

[0013]

[0014] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model.

Detailed Implementation Methods

[0015] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] Please refer to Figure 3-4 The resonant cavity antenna 100 of this utility model can be used in electronic devices such as computer mainframes. It includes a circuit board 10, a cable 11, a metal box 12, and a protective sleeve 13. The circuit board 10 has an upper surface 101 and a lower surface 102. The lower surface 102 is provided with a plurality of radiating parts 103 (only a simplified illustration is shown in the figure, for details please refer to CN219717262U cited in the background art). One side of the metal box 12 is open and is installed on the lower surface of the circuit board 10, thereby forming a resonant cavity. One end of the cable 11 is connected to the circuit board 10 and extends outward through the metal box 12. The protective sleeve 13 wraps around the outer surface of the metal box 12 but does not wrap around the lower surface of the metal box 12, and covers the upper surface of the circuit board. In this way, the antenna is covered except for the mounting surface, so that it presents an aesthetic appearance. Meanwhile, it also facilitates the later modification of the material or color of the protective sleeve 13 as needed. In this embodiment, the protective sleeve 13 can be made of Mylar, acetate cloth, or other similar products and is attached to the metal housing 12. Preferably, the protective sleeve 13 is integrally molded from materials such as silicone or silicone rubber, with a wall thickness of 0.3 mm and elasticity, and then fitted onto the metal housing 12 and the circuit board 10. The protective sleeve is preferably made of silicone, which has a simple molding process and can also control its wall thickness to the maximum extent, reducing the impact on signal transmission and reception.

[0017] Please refer to Figure 2-4The resonant cavity antenna 100 further includes a mounting plate 14. The metal box 12 is rectangular and includes a bottom plate 121 opposite to the opening and four side plates 122 perpendicular to the bottom plate 121. The mounting plate 14 is parallel to the bottom plate 121 and protrudes laterally from the side plates 122. The mounting plate 14 has a mounting portion 141 at its far end away from the cable 11. Preferably, the mounting plate 14 is bent at the near end of the cable 11 to form an end plate 142 attached to the corresponding side plate 122. In this embodiment, the end plate 142 has a notch 143 near the bottom plate 121. The core of the cable 11 is connected to the feed point of the circuit board 10 and then extends outward through the notch 143. The protective sleeve 13 is integrally molded from silicone or silicone rubber material. It is fitted onto the side plate 122 and attached to the upper surface 101 of the mounting plate 14. Furthermore, the protective sleeve 13 has a slot 131 near the cable 11. Correspondingly, the mounting plate 14 has a bending part 144. After the protective sleeve 13 is fitted onto the metal box 12, the bending part 144 is embedded in the slot 131 to prevent the protective sleeve 13 from falling off.

[0018] Please refer to Figure 1 , 3 The other end of the cable 11 is connected to a coaxial connector 15 for feeding in and feeding out signals. A protective tube 151 is sleeved on the outside of the coaxial connector 15. In this embodiment, the coaxial connector 15 is an RF connector. The mounting plate 14 is further provided with a mounting hole 145. Fasteners can use the mounting hole 145 to install the resonant cavity antenna 100 to the electronic device. Correspondingly, the protective sleeve 13 is provided with a through hole 132, which is larger than the mounting hole 145, so that the mounting hole 145 is exposed in the through hole 132, which facilitates the replacement of the protective sleeve 13 later without disassembling the metal box 12.

[0019] The above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of this utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of this utility model should still fall within the scope of this utility model patent.

Claims

1. A resonant cavity antenna, comprising a circuit board, a cable, a metal housing, and a protective sleeve, wherein the circuit board has opposing upper and lower surfaces, the lower surface is provided with a plurality of radiating portions, the upper side of the metal housing is open and mounted on the lower surface of the circuit board, thereby forming a resonant cavity, one end of the cable is connected to the circuit board and extends outward through the metal housing; characterized in that: The protective sleeve wraps around the outer surface of the metal box but does not wrap around the lower surface of the metal box or the upper surface of the circuit board.

2. The resonant cavity antenna as described in claim 1, characterized in that: The protective sleeve is a Mylar or acetate cloth product and is attached to the metal box.

3. The resonant cavity antenna as described in claim 1, characterized in that: The protective sleeve is integrally molded from silicone or silicone rubber material, has elasticity, and is then fitted onto the metal box.

4. The resonant cavity antenna as described in claim 1, characterized in that: The resonant cavity antenna further includes a mounting plate. The metal box is rectangular and includes a bottom plate opposite to the opening and four side plates perpendicular to the bottom plate. The mounting plate is parallel to the bottom plate and protrudes laterally from the side plates.

5. The resonant cavity antenna as described in claim 4, characterized in that: The mounting plate has a mounting section at its far end, away from the cable.

6. The resonant cavity antenna as described in claim 5, characterized in that: The mounting plate is bent near the proximal end of the cable to form an end plate attached to the corresponding side plate, and the cable extends outward through an opening provided in the end plate.

7. The resonant cavity antenna as described in claim 6, characterized in that: The protective sleeve is integrally molded from silicone or silicone rubber material, and is fitted onto the side plate and attached to the upper surface of the mounting plate.

8. The resonant cavity antenna as described in claim 7, characterized in that: The opening is adjacent to the base plate.

9. The resonant cavity antenna as described in claim 1, characterized in that: The other end of the cable is connected to a coaxial connector.

10. The resonant cavity antenna as described in claim 9, characterized in that: The coaxial connector is fitted with a protective tube on its outer side.

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