Novel directional antenna

Abstract

A novel directional antenna comprises a radiator (1), a reflecting plate (3), a radiator (4) and a plastic shell (5). Wherein the radiator (1) is integrally fixed on the plastic shell (5), the radiator (4) is mounted at the bottom of the radiator (1), and the reflecting plate (3) is mounted at the bottom of the radiator (4). By reasonably planning the relative positions of the radiator and the directional antenna and the appearance of the radiator, the radiator can serve as a reflecting plate of the directional antenna, so that the cost is saved, and the size of the whole machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless terminals, in particular to a novel directional antenna. Background Art

[0002] In order to obtain higher gain and directivity, traditional directional antennas all require a reflector to concentrate the signal in a specific direction, so as to receive better signal strength and improve the product rate. However, the existing directional antennas have high costs, large overall dimensions, and there is still room for improvement. Summary of the Utility Model

[0003] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a novel directional antenna.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A novel directional antenna includes a radiator 1, a reflector 3, a heat sink 4 and a plastic housing 5; wherein, the radiator 1 is integrally fixed on the plastic housing 5, the heat sink 4 is installed at the bottom of the radiator 1, and the reflector 3 is installed at the bottom of the heat sink 4.

[0006] The utility model also has the following additional technical features:

[0007] As a further specific optimization of the technical solution of the utility model: the heat sink 4 is made of metal.

[0008] As a further specific optimization of the technical solution of the utility model: the distance between the heat sink 4 and the radiator 1 is 1 / 5 - 1 / 4 of the antenna radiation wavelength.

[0009] As a further specific optimization of the technical solution of the utility model: the projection area of the radiator 1 and the surface of the heat sink 4 are flat.

[0010] As a further specific optimization of the technical solution of the utility model: the area of the heat sink 4 is larger than the projection area of the radiator 1 on the heat sink 4.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] By reasonably planning the relative positions of the heat sink and the directional antenna, as well as the shape of the heat sink, the heat sink can act as a reflector of the directional antenna, thereby saving costs and reducing the overall dimensions. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a traditional directional antenna;

[0014] Figure 2It is a structural schematic diagram of the present utility model;

[0015] Figure 3 It is a simulation gain schematic diagram of a traditional directional antenna;

[0016] Figure 4 It is a simulation gain schematic diagram of the present utility model.

[0017] Explanation of reference numerals in the drawings: radiator 1, support structure 2, reflector 3, heat sink 4, and plastic housing 5. Detailed implementation manners

[0018] The exemplary embodiments disclosed by the present utility model will be described in more detail below with reference to the drawings.

[0019] The directional antenna of the traditional design (see Figure 1 ) includes a radiator 1, a support structure 2, a reflector 3, a heat sink 4, and a plastic housing 5; among them, the radiator 1, the support structure 2, and the reflector 3 are integrally fixed on the plastic housing 5; the heat sink 4 is installed at the bottom of the reflector 3.

[0020] The present utility model (see Figure 2 ) cancels the support structure 2 and the reflector 3, and only retains the radiator 1, the reflector 3, the heat sink 4, and the plastic housing 5; among them, the radiator 1 is integrally fixed on the plastic housing 5, the heat sink 4 is installed at the bottom of the radiator 1, and the reflector 3 is installed at the bottom of the heat sink 4.

[0021] The utility model saves costs and reduces the overall size of the machine by reasonably planning the relative positions of the heat sink and the directional antenna, as well as the shape of the heat sink, so that the heat sink can act as the reflector of the directional antenna.

[0022] Taking the directional antenna with a frequency of 3600 MHz as an example, the wavelength is about 83 mm, and one-quarter wavelength is 20.75 mm. The directional antenna in the traditional way is to fix the radiator and the support structure together and then integrally fix them on the plastic case or the heat sink (see Figure 1 ), and the gain calculated by simulation is about 8.66 dBi (see Figure 3 ). The directional antenna of this new design cancels the support structure and the reflector, and only has the radiator and the heat sink, which are fixed on the plastic housing (see Figure 2 ), and the simulated gain is about 8.2 dBi (see Figure 4 ), with a reduction of less than 0.5 dBi.

[0023] The detailed description of the embodiments of the present utility model provided in the drawings above is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model.

Claims

1. A novel directional antenna, characterized in that: It includes a radiator (1), a reflector (3), a heat sink (4) and a plastic housing (5); among them, the radiator (1) is integrally fixed on the plastic housing (5), the radiator (4) is installed at the bottom of the radiator (1), and the reflector (3) is installed at the bottom of the radiator (4).

2. The novel directional antenna according to claim 1, characterized in that: The radiator (4) is made of metal material.

3. A novel directional antenna according to claim 1, characterized in that: The distance between the radiator (4) and the radiator (1) is 1 / 5 - 1 / 4 of the antenna radiation wavelength.

4. A novel directional antenna according to claim 1, wherein: The projection area of the radiator (1) and the surface of the radiator (4) are flat.

5. A novel directional antenna according to claim 1, characterized in that: The area of the radiator (4) is larger than the projection area of the radiator (1) on the radiator (4).

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