High gain directional antenna equipment
By designing a high-gain directivity antenna device, using the combination of reflective substrate and directional array sheet, direct signal transmission and gain improvement in wireless communication are achieved, and the interference and signal instability of board antennas in wireless communication is solved, reducing the problem of interference and signal instability of board antennas in wireless communications is reduced. cost and avoid electromagnetic interference.
Patent Information
- Application Number
- CN201811588283.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-12-25
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2038-12-25
AI Technical Summary
The existing board antennas are prone to mutual interference due to insufficient coverage in wireless communications, and signal transmission is unstable in long-distance and multi-obstruction environments, which are prone to connection interruptions and data packet loss problems. Repeaters are needed to solve them. , and is susceptible to electromagnetic interference, increasing costs and installation complexity.
Design a high-gain directivity antenna device, including a reflective substrate, an antenna sheet and a directional array sheet. The antenna sheet and the directional array sheet are arranged on the grounded metal rod, the current transmitted through the feeder is converted into electromagnetic waves and emitted, and the directional array is used. The sheet adjusts the radiation angle of the electromagnetic waves, and the reflective substrate and the antenna sheet are arranged parallel to each other to enhance direction and avoid electromagnetic interference.
It realizes direct signal transmission between the antenna and the receiving endpoint to point, improves signal gain, reduces costs, avoids peripheral electromagnetic interference, and does not need to add supporting devices such as repeaters and network cables, which enhances signal directionality and stability.
Smart Images
Figure CN109494482B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of transmitting antennas, and in particular to a high-gain directional antenna device. Background Art
[0002] In recent years, as most wireless network products are designed to be thin, light, short and convenient, most wireless network products use plate-type antennas for wireless communication.
[0003] However, existing plate antennas are prone to overlapping and mutual interference with adjacent devices due to insufficient coverage. In addition, due to environmental influences, they are unable to directly transmit signals to the receiving end during long-distance and multi-obstacle transmission. Connection interruptions and data packet loss are prone to occur, resulting in product failures during use. This needs to be solved by adding repeaters. The addition of repeater equipment places high requirements on product use and installation and its applicable environment, increases costs, and is easily affected by electromagnetic interference.
[0004] In view of this, it is necessary to provide a high-gain directional antenna device that can solve the above-mentioned defects so as to realize point-to-point direct signal transmission between the antenna and the receiving end without adding supporting devices such as repeaters and network cables, thereby improving gain, reducing costs, and avoiding surrounding electromagnetic interference. Summary of the invention
[0005] The technical problem to be solved by the present invention is to provide a high-gain directional antenna device so as to realize point-to-point direct signal transmission between the antenna and the receiving end without adding supporting devices such as repeaters and network cables, thereby improving gain, reducing costs and avoiding surrounding electromagnetic interference.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a high-gain directional antenna device, which includes a reflective substrate, an antenna sheet and at least two directional array sheets, a grounded metal rod is arranged on the reflective substrate, the antenna sheet and the directional array sheet are both sleeved on the grounded metal rod, the antenna sheet is connected to a feeder and is arranged between the directional array sheet and the reflective substrate to convert the current transmitted by the feeder into electromagnetic waves and emit them, the directional array sheet is used to adjust the radiation angle of the electromagnetic waves, and the directional array sheet, the antenna sheet and the reflective substrate are all arranged parallel to each other and spaced apart.
[0007] A further technical solution is as follows: the directional array sheet is a metal sheet, which is larger than the antenna sheet so as to reflect the electromagnetic waves emitted by the antenna sheet.
[0008] A further technical solution is: the reflective substrate is larger than the antenna sheet so as to reflect the electromagnetic waves emitted by the antenna sheet.
[0009] A further technical solution is as follows: a through hole for allowing the feed line to pass through is provided on the reflective substrate, and the radius of the through hole is equal to the outer diameter of the feed line.
[0010] A further technical solution is as follows: the reflective substrate is a curved surface structure, and the grounding metal rod is vertically arranged at the center of the inner curved surface of the reflective substrate.
[0011] A further technical solution is: the antenna sheet is a circularly polarized antenna sheet.
[0012] A further technical solution is that a thread is formed on the surface of the grounded metal rod for the directional array sheet and the antenna sheet to move along the length direction thereof, so as to adjust the distance between the directional array sheet and the antenna sheet and the distance between the antenna sheet and the reflective substrate.
[0013] The beneficial technical effect of the present invention is that the high-gain directional antenna device realizes the reflection of electromagnetic waves obtained by current conversion by arranging an antenna plate connected to a feeder on a reflective substrate, and uses a directional array plate to adjust the radiation angle of the electromagnetic wave, thereby realizing directional emission of signals with strong directionality. There is no need to add supporting devices such as repeaters and network cables to realize point-to-point direct signal transmission between the antenna and the receiving end, thereby improving gain, reducing costs, and avoiding surrounding electromagnetic interference. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the high-gain directional antenna device of the present invention.
[0015] Figure 2 yes Figure 1 A top view of the high-gain directional antenna device shown. DETAILED DESCRIPTION
[0016] In order to enable those skilled in the art to more clearly understand the objectives, technical solutions and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0017] Reference Figure 1 and Figure 2 In this embodiment, the high-gain directional antenna device 10 is disposed outside the electronic device and is electrically connected to the internal circuit of the electronic device to achieve wireless communication of the electronic device. Figure 2The top view of the high-gain directional antenna device 10 is shown. To show its structure, the dotted line part represents the obscured parts. The high-gain directional antenna device 10 includes a reflective substrate 110, an antenna sheet 120 and at least two directional array sheets 130. A grounded metal rod 111 is arranged on the reflective substrate 110. The antenna sheet 120 and the directional array sheet 130 are both sleeved on the grounded metal rod 111. The antenna sheet 120 is connected to a feeder 140 to convert the current transmitted by the feeder 140 into electromagnetic waves and emit them. The antenna sheet 120 is arranged between the directional array sheet 130 and the reflective substrate 110. The directional array sheet 130 is used to adjust the radiation angle of the electromagnetic waves emitted by the antenna sheet 120. The directional array sheet 130, the antenna sheet 120 and the reflective substrate 110 are all arranged parallel to each other and spaced apart. Specifically, in this embodiment, the number of the directional array sheets 130 is two, namely a first directional array sheet 130a and a second directional array sheet 130b, and the antenna sheet 120, the first directional array sheet 130a and the second directional array sheet 130b are sequentially arranged on the reflective substrate 110 and sleeved on the grounded metal rod 111. Preferably, the antenna sheet 120 is a circularly polarized antenna sheet.
[0018] The grounding metal rod 111 represents a metal rod with one end grounded. Preferably, in this embodiment, a thread is formed on the surface of the grounding metal rod 111 for the direction array sheet 130 and the antenna sheet 120 to move along the length direction of the grounding metal rod 111, so as to adjust the distance between the direction array sheet 130 and the antenna sheet 120 and the distance between the antenna sheet 120 and the reflective substrate 110. The spacing distance between the antenna sheet 120 and the reflective substrate 110 can be set in proportion to the wavelength corresponding to the radiation frequency required by the user. By rotating the antenna sheet 120, the antenna sheet 120 can be moved along the thread of the grounding metal rod 111, thereby realizing movement along the length direction of the grounding metal rod 111 and adjusting the distance between the antenna sheet 120 and the reflective substrate 110. The directional array sheet 130 is used to adjust and control the lobe width of the electromagnetic wave, so as to adjust the radiation angle of the electromagnetic wave of the antenna sheet 120. The lobe width of the electromagnetic wave can be controlled by controlling the number of directional array sheets 130, so as to adjust the radiation angle. As the number of directional array sheets 130 increases, the radiation angle becomes smaller and the directivity becomes stronger. Preferably, the number of directional array sheets 130 is 2 to 5. The spacing distance between each directional array sheet 130 and the antenna sheet 120 is set in proportion to the wavelength corresponding to the radiation frequency of the electromagnetic wave required by the user. By rotating the directional array sheet 130, the directional array sheet 130 can be moved along the thread of the grounded metal rod 111, so as to move along the length direction of the grounded metal rod 111. The distance between the directional array sheet 130 and the antenna sheet 120 is adjusted, so as to adjust the radiation angle and frequency of the high-gain directional antenna device 10 according to the user's needs.
[0019] Preferably, in this embodiment, the directional array sheet 130 is a metal sheet and is grounded by connecting to the grounded metal rod 111, and its orthographic projection is larger than the orthographic projection of the antenna sheet 120, so as to more comprehensively and effectively reflect the electromagnetic waves of the corresponding frequency emitted by the antenna sheet 120 to the corresponding directional array sheet 130. The reflective substrate 110 is a metal plate and is grounded by connecting to the grounded metal rod 111, and its orthographic projection is larger than the orthographic projection of the antenna sheet 120, so as to effectively reflect the electromagnetic waves emitted by the antenna sheet 120 to the reflective substrate 110, thereby enhancing the directivity of the antenna device 10, reducing the interference of spatial noise on the antenna, and shielding the electromagnetic interference from the rear. Specifically, if the orthographic projection of the directional array sheet 130 is smaller than the orthographic projection of the reflective substrate 110, the reflective substrate 110 can reflect the electromagnetic waves radiated from the directional array sheet 130 to the reflective substrate 110, reduce the loss of electromagnetic waves, make the emission of electromagnetic waves more concentrated, and improve the gain and directivity. In this embodiment, the side of the directional array sheet 130 facing the antenna sheet 120 reflects the electromagnetic waves emitted by the antenna sheet 120, and the side of the directional array sheet 130 facing away from the antenna sheet 120 can generate electromagnetic waves that are opposite to the electromagnetic waves reflected by the directional array sheet 130. Since the frequencies of the two electromagnetic waves are the same, a resonance effect is generated, so that the electromagnetic waves are transmitted to the reflective substrate 110, and the reflective substrate 110 then reflects them to emit them.
[0020] Continue to refer to Figure 1 and Figure 2 In this embodiment, the reflective substrate 110 is provided with a through hole for allowing the feed line 140 to pass through, and the radius of the through hole is equal to the outer diameter of the feed line 140. Preferably, the reflective substrate 110 is a curved surface structure, and the grounding metal rod 111 is vertically arranged at the center of the inner curved surface of the reflective substrate 110 to play a supporting and fixing role and provide a voltage zero point. Specifically, the orthographic projections of the reflective substrate 110, the antenna sheet 120 and the directional array sheet 130 are all circular, and the reflective substrate 110 is a curved surface structure, and the grounding metal rod 111 is vertically arranged at the center of the inner curved surface of the reflective substrate 110, so that the antenna sheet 120 and the directional array sheet 130 are both arranged on the inner curved surface of the reflective substrate 110, so that the electromagnetic waves can be reflected more concentratedly.
[0021] Based on the above design, when working, the feed line transmits current to the antenna piece, the antenna piece converts the obtained current into electromagnetic waves and emits them, the reflective substrate reflects the electromagnetic waves emitted by the antenna piece, and the directional array piece reflects the electromagnetic waves emitted by the antenna piece. After the reflected electromagnetic waves pass through the antenna piece for a certain distance, they are canceled out, the phases of the electromagnetic waves coincide and superimpose, and are reflected through the reflective substrate to achieve gain improvement. At the same time, the side of the directional array piece facing away from the antenna piece generates an electromagnetic wave with a phase opposite to the electromagnetic wave reflected by it. Since the frequencies of the two electromagnetic waves are the same, a resonance effect is generated, so that the electromagnetic wave is transmitted to the reflective substrate, and the reflective substrate then reflects it to emit it.
[0022] To summarize, the high-gain directional antenna device realizes the reflection of electromagnetic waves obtained by current conversion by arranging an antenna plate connected to a feeder on a reflective substrate, and uses a directional array plate to adjust the radiation angle of the electromagnetic waves to realize directional emission of signals with strong directivity. There is no need to add supporting devices such as repeaters and network cables to realize point-to-point direct signal transmission between the antenna and the receiving end, thereby improving gain, reducing costs, and avoiding surrounding electromagnetic interference. Moreover, a thread is formed on the surface of the grounded metal rod for the directional array plate and the antenna plate to move along its length direction, so as to adjust the distance between the directional array plate and the antenna plate and the distance between the antenna plate and the reflective substrate, so as to adjust the radiation frequency of the antenna according to user needs.
[0023] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims should fall within the protection scope of the present invention.
Claims
1. A high-gain directional antenna device, characterized in that: The high-gain directional antenna device comprises: a reflective substrate, an antenna sheet and at least two directional array sheets, the reflective substrate is provided with a grounded metal rod, the antenna sheet and the directional array sheet are both sleeved on the grounded metal rod, the antenna sheet is connected with a feeder and is arranged between the directional array sheet and the reflective substrate to convert the current transmitted by the feeder into electromagnetic waves and emit them, the directional array sheet is used to adjust the radiation angle of the antenna, and the directional array sheet, the antenna sheet and the reflective substrate are all arranged parallel to each other and spaced apart; The directional array sheet is a metal sheet, which is larger than the antenna sheet so as to reflect the electromagnetic waves emitted by the antenna sheet; The reflective substrate is a curved surface structure, and the grounding metal rod is vertically arranged at the center of the inner curved surface of the reflective substrate; The antenna sheet is a circularly polarized antenna sheet; The surface of the grounding metal rod is formed with a screw thread for the directional array sheet and the antenna sheet to move along the length direction thereof, so as to adjust the distance between the directional array sheet and the antenna sheet and the distance between the antenna sheet and the reflective substrate.
2. The high-gain directional antenna device according to claim 1, characterized in that: The reflective substrate is larger than the antenna sheet so as to reflect electromagnetic waves emitted by the antenna sheet.
3. The high-gain directional antenna device according to claim 1, characterized in that: The reflective substrate is provided with a through hole for allowing the feed line to pass through, and the radius of the through hole is equal to the outer diameter of the feed line.