Multiband slot antenna

Abstract

The utility model discloses a multiband slot antenna, concretely relates to slot antenna technical field, including first antenna casing and second antenna casing, and the bottom between first antenna casing and second antenna casing is fixed through bolt, and the top of first antenna casing is equipped with a plurality of slots, and the inside of first antenna casing is provided with adjusting assembly, and adjusting assembly includes step motor, second screw rod, two sliding blocks, slide and a plurality of baffle, and step motor fixed mounting is in the inside of first antenna casing, and the output shaft end of step motor is fixedly connected with second screw rod. The utility model discloses first antenna casing adopts the metal material of high conductivity to make, and step motor work drives a plurality of baffle horizontal movement, and according to the demand adjustment a plurality of baffle's position, thereby can shield or expose part slot, and then can change the size of slot, and simple operation, convenient adjustment slot's size can realize multiband work.

Description

Technical Field

[0001] This utility model relates to the field of slot antenna technology, and more specifically, to multi-band slot antennas. Background Technology

[0002] A slot antenna is an antenna that radiates or receives electromagnetic waves by creating a slot (groove) of a specific shape and size on a conductive metal surface (such as a metal plate or metal pillar). A slot antenna mainly consists of a conductive metal carrier, a slot, and a feeding structure.

[0003] A search revealed that Chinese patent CN216597999U discloses a slot antenna. A fixing plate is connected to both ends of the slot antenna via a connecting block. The slot antenna can be reinforced on the object to be installed using bolts. The installation is simple and convenient, and the stability of the slot antenna is improved. The top plate with the antenna slot is fixed to the metal shell by fixing bolts, thus forming the body of the slot antenna. This makes the assembly of the slot antenna simpler and also facilitates the maintenance of the slot antenna.

[0004] When using the aforementioned slot antenna, it is inconvenient to adjust the size of the slot. Since the size of the slot directly determines the resonant frequency of the antenna, if the size is fixed, the antenna can only work in a single or narrow frequency band. When the application scenario requires switching frequencies (such as a communication system switching from 2GHz to 5GHz, or a radar needing to adapt to different target detection frequency bands), it is difficult to achieve frequency band adaptation by adjusting the size of the slot, and the antenna must be replaced, increasing the equipment cost. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-band slot antenna, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-band slotted antenna, comprising a first antenna housing and a second antenna housing, wherein the bottom end of the first antenna housing is fixed to the second antenna housing by bolts, and the top end of the first antenna housing has multiple slots, and an adjustment assembly is provided inside the first antenna housing, the adjustment assembly comprising a stepper motor, a second lead screw, two sliders, a slide rod and multiple baffles, the stepper motor is fixedly installed inside the first antenna housing, and the output shaft end of the stepper motor is fixedly connected to the second lead screw, both ends of the second lead screw are movably connected to the first antenna housing by bearings, one of the sliders is threadedly connected to the second lead screw, and the two sides of the multiple baffles are respectively fixedly connected to the two sliders.

[0007] Furthermore, both ends of the slide rod are fixedly connected to the first antenna housing, and another slider is movably sleeved on the slide rod.

[0008] It can be seen that the above technical solution is designed to facilitate limiting the rotation of the slider.

[0009] Furthermore, a cover plate is movably provided on the top of the first antenna housing, and a waterproof pad is fixedly adhered to the bottom end of the cover plate.

[0010] Furthermore, a support assembly is provided at the bottom of the second antenna housing, the support assembly including a base plate, three L-shaped plates, a first lead screw and a nut.

[0011] Furthermore, the top of the base plate is fixedly connected to the second antenna housing, one side of each of the three L-shaped plates is fixedly connected to the cover plate, the bottom end of the first lead screw passes through one of the L-shaped plates and is fixedly connected to the base plate, and the nut is movably sleeved on the first lead screw.

[0012] Furthermore, uprights are movably installed on the other two L-shaped plates, and the bottom ends of the two uprights are fixedly connected to the base plate.

[0013] It can be seen that the above technical solutions are designed to facilitate limiting the deflection of the cover plate.

[0014] Furthermore, buffer pads are fixedly connected to both sides of the bottom edge of the base plate.

[0015] As can be seen, in the above technical solution, the two buffer pads can improve the stability of the base plate.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. In this utility model, the first antenna housing is made of a metal material with high conductivity. When electromagnetic waves are transmitted in the first antenna housing, strong electromagnetic coupling will be generated at the gap. The stepper motor drives the second lead screw to rotate, thereby driving multiple baffles to move horizontally. The position of multiple baffles can be adjusted according to the needs, so that part of the gap can be blocked or exposed, thereby changing the size of the gap. The operation is simple and the size of the gap can be easily adjusted. Multi-band operation can be realized.

[0018] 2. This utility model places the cover plate on top of the first antenna housing, and three L-shaped plates are respectively movably sleeved on the first lead screw and two uprights. By rotating the nut and making it contact one of the L-shaped plates, the cover plate is locked to the bottom plate. The cover plate can shield and protect multiple gaps, which can prevent external factors from damaging the antenna performance. At the same time, the waterproof pad can prevent external liquids from entering the gaps. The structure is simple and easy to use. Attached Figure Description

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the first antenna housing and the second antenna housing of this utility model;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the first antenna housing and adjustment component of this utility model;

[0023] Figure 4 This is a schematic diagram of the support component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the adjustment component structure of this utility model.

[0025] In the diagram: 1. First antenna housing; 2. Second antenna housing; 3. Cover plate; 4. Waterproof pad; 5. Support assembly; 6. Gap; 7. Adjustment assembly; 501. Base plate; 502. L-shaped plate; 503. First lead screw; 504. Nut; 505. Upright pole; 506. Buffer pad; 701. Stepper motor; 702. Second lead screw; 703. Slider; 704. Sliding rod; 705. Baffle. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Refer to the instruction manual appendix Figure 1-3The multi-band slotted antenna of this embodiment includes a first antenna housing 1 and a second antenna housing 2. The bottom end of the first antenna housing 1 is fixed to the second antenna housing 2 by bolts. The top end of the first antenna housing 1 has multiple slots 6. An adjustment assembly 7 is provided inside the first antenna housing 1. The adjustment assembly 7 includes a stepper motor 701, a second lead screw 702, two sliders 703, a slide bar 704, and multiple baffles 705. The stepper motor 701 is fixedly installed inside the first antenna housing 1, and the output shaft end of the stepper motor 701 is fixedly connected to the second lead screw 702. Both ends of the second lead screw 702 are movably connected to the first antenna housing 1 by bearings. One of the sliders 703 is threadedly connected to the second lead screw 702. The two sides of the multiple baffles 705 are respectively fixedly connected to the two sliders 703.

[0028] Furthermore, both ends of the slide rod 704 are fixedly connected to the first antenna housing 1, and another slider 703 is movably sleeved on the slide rod 704.

[0029] Furthermore, a cover plate 3 is movably provided on the top of the first antenna housing 1, and a waterproof pad 4 is fixedly bonded to the bottom of the cover plate 3. A support assembly 5 is provided at the bottom of the second antenna housing 2. The support assembly 5 includes a base plate 501, three L-shaped plates 502, a first lead screw 503, and a nut 504. The top of the base plate 501 is fixedly connected to the second antenna housing 2. One side of each of the three L-shaped plates 502 is fixedly connected to the cover plate 3. The bottom end of the first lead screw 503 passes through one of the L-shaped plates 502 and is fixedly connected to the base plate 501. The nut 504 is movably sleeved on the first lead screw 503. Uprights 505 are movably provided on the other two L-shaped plates 502, and the bottom ends of the two uprights 505 are fixedly connected to the base plate 501. Buffer pads 506 are fixedly connected to both sides of the bottom edge of the base plate 501.

[0030] The second antenna housing 2 is supported by a base plate 501 and fixed by bolts. The two buffer pads 506 improve the stability of the base plate 501. When not in use, the cover plate 3 is placed on top of the first antenna housing 1, and the three L-shaped plates 502 are respectively movably fitted onto the first lead screw 503 and the two uprights 505. The nut 504 is rotated and made to contact one of the L-shaped plates 502, thereby locking the cover plate 3 to the base plate 501. The cover plate 3 can shield and protect multiple gaps 6, avoiding damage to the antenna performance from external factors. At the same time, the waterproof pad 4 can prevent external liquids from entering the gaps 6. The structure is simple and easy to use. The cover plate 3 can be disassembled and replaced in the same way.

[0031] The usage method of this embodiment is as follows:

[0032] In use, the staff installs electronic components inside the second antenna housing 2. These components include chips for signal processing, a power supply module providing stable power, and circuit components for impedance matching. Together, they provide core support for the normal operation of the antenna. Then, the first antenna housing 1 and the second antenna housing 2 are fixed together with bolts. The first antenna housing 1 is made of a highly conductive metal material and forms a closed waveguide structure inside, which can efficiently guide the transmission of electromagnetic waves. When electromagnetic waves propagate inside the first antenna housing 1, strong electromagnetic coupling is generated at the gap 6, allowing the electromagnetic wave energy to escape outward through the gap 6. The signal is radiated outwards from the space to achieve the signal transmission function. The stepper motor 701 is started, and the stepper motor 701 drives the second lead screw 702 to rotate. Since one of the sliders 703 is threadedly connected to the second lead screw 702, and the other slider 703 cooperates with the slide rod 704 to restrict the rotation of multiple baffles 705, the second lead screw 702 can drive the two sliders 703 to move horizontally, thereby driving the multiple baffles 705 to move horizontally. The position of the multiple baffles 705 can be adjusted as needed to block or expose part of the gap 6, thereby changing the size of the gap 6. The operation is simple and the size of the gap 6 can be easily adjusted, and multi-frequency operation can be achieved.

[0033] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-band slot antenna, comprising a first antenna housing (1) and a second antenna housing (2), wherein the bottom end of the first antenna housing (1) is fixed to the second antenna housing (2) by bolts, characterized in that: The top of the first antenna housing (1) has multiple slits (6). An adjustment assembly (7) is provided inside the first antenna housing (1). The adjustment assembly (7) includes a stepper motor (701), a second lead screw (702), two sliders (703), a slide bar (704), and multiple baffles (705). The stepper motor (701) is fixedly installed inside the first antenna housing (1), and the output shaft end of the stepper motor (701) is fixedly connected to the second lead screw (702). Both ends of the second lead screw (702) are movably connected to the first antenna housing (1) through bearings. One of the sliders (703) is threadedly connected to the second lead screw (702). The two sides of the multiple baffles (705) are respectively fixedly connected to the two sliders (703).

2. The multi-band slot antenna according to claim 1, characterized in that: Both ends of the slide rod (704) are fixedly connected to the first antenna housing (1), and another slider (703) is movably sleeved on the slide rod (704).

3. The multi-band slot antenna according to claim 1, characterized in that: The top of the first antenna housing (1) is movably provided with a cover plate (3), and a waterproof pad (4) is fixedly bonded to the bottom of the cover plate (3).

4. The multi-band slot antenna according to claim 1, characterized in that: The bottom of the second antenna housing (2) is provided with a support assembly (5), which includes a base plate (501), three L-shaped plates (502), a first lead screw (503) and a nut (504).

5. The multi-band slot antenna according to claim 4, characterized in that: The top of the base plate (501) is fixedly connected to the second antenna housing (2), one side of each of the three L-shaped plates (502) is fixedly connected to the cover plate (3), the bottom end of the first lead screw (503) passes through one of the L-shaped plates (502) and is fixedly connected to the base plate (501), and the nut (504) is movably sleeved on the first lead screw (503).

6. The multi-band slot antenna according to claim 4, characterized in that: The other two L-shaped plates (502) are each movably provided with uprights (505), and the bottom ends of the two uprights (505) are fixedly connected to the base plate (501).

7. The multi-band slot antenna according to claim 4, characterized in that: A buffer pad (506) is fixedly connected to both sides of the bottom edge of the base plate (501).

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