CN212810552U - Device for reducing antenna interference by radio electromagnetic wave - Google Patents
Device for reducing antenna interference by radio electromagnetic wave Download PDFInfo
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- CN212810552U CN212810552U CN201920464019.XU CN201920464019U CN212810552U CN 212810552 U CN212810552 U CN 212810552U CN 201920464019 U CN201920464019 U CN 201920464019U CN 212810552 U CN212810552 U CN 212810552U
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Abstract
A device for reducing the interference of the antenna by the wireless electromagnetic waves is characterized in that according to the wavelength of the electromagnetic waves, the antenna is surrounded by corresponding electromagnetic wave blocking materials, an electromagnetic wave inlet and an electromagnetic wave outlet are reserved, an electromagnetic wave selection cover is formed, the cover can select the intensity and/or the direction of the electromagnetic waves and/or the wavelength or the frequency of the electromagnetic waves, the electromagnetic waves with sufficient intensity and/or suitable direction and/or short wavelength can enter the cover and the antenna to communicate, and the interference of the electromagnetic waves outside the cover on the antenna inside the cover is reduced or eliminated. Under the condition of low cost, the device can well reduce the same frequency or adjacent frequency interference on the WIFI router, and can enable the network speed of mobile phone WIFI network access or computer network access to be more stable and faster.
Description
Technical Field
The invention relates to a device for reducing interference of an antenna by radio electromagnetic waves, and belongs to the field of radio signal interference prevention.
Background
At present, wireless WIFI signals are in a 2.4G frequency band and are often subjected to same-frequency or adjacent-frequency interference of different routers, so that the WIFI mobile phone is low in internet access speed and is often blocked. Although about 13 channels are divided in the 2.4G frequency band, because more and more households using WIFI are present and are far away from each other, so that the channels are still insufficient and often interfere with each other, it is more and more difficult to reduce frequency interference by setting different channels because too many users use routers nearby. In addition to routers, some other devices that operate using WIFI signals may also interfere with the WIFI antenna of the router. Although WIFI has a 5G frequency band, few supported devices and poor signal penetration are available.
Disclosure of Invention
In order to solve the problem that the WIFI router is frequently interfered by same-frequency or adjacent-frequency electromagnetic signals, a new method is adopted in the method.
The technical scheme adopted by the invention is as follows: according to the wavelength of the electromagnetic wave, the antenna is surrounded by the corresponding electromagnetic wave blocking material, and an electromagnetic wave inlet and an electromagnetic wave outlet are reserved to form an electromagnetic wave selection cover, the cover can select the intensity and/or the direction of the electromagnetic wave and/or the wavelength or the frequency of the electromagnetic wave, so that the electromagnetic wave with sufficient intensity and/or suitable direction and/or short wavelength can enter the cover and the antenna for communication, and the interference of the electromagnetic wave outside the cover on the antenna in the cover is reduced or eliminated. Specifically, a blocking and surrounding method with an electromagnetic wave (e.g., WIFI electromagnetic wave) inlet/outlet is adopted, the WIFI antenna or the whole router is surrounded by an electromagnetic wave blocking material (e.g., a metal aluminum mesh) to form a surrounding body surrounding the WIFI antenna, and one or more electromagnetic wave signal inlet/outlet (the size of which can be selected according to the wavelength of the electromagnetic wave) are reserved on the surrounding body, so that an electromagnetic wave selection cover (a wave selection cover) is formed, the cover can select the intensity and/or the direction of the electromagnetic wave and/or the wavelength or the frequency of the electromagnetic wave, so that the electromagnetic wave with sufficient intensity and/or suitable direction and/or short wavelength can enter the cover and the antenna for communication, and the interference of the electromagnetic wave with weak intensity outside the cover and incapable of linearly entering the signal inlet on the antenna inside the cover is reduced or eliminated. The electromagnetic wave selection cover is not frequency-selective, and mainly filters out electromagnetic waves which are weak in intensity and enter a signal inlet in a non-straight line in the propagation direction. For example, the signal inlet of the electromagnetic wave selection cover is north-facing, so that an interference signal transmitted from the south or the east cannot enter the signal inlet linearly, and under the condition that the intensity of the interference signal is weak, the interference signal is difficult to diffract and enter the north-facing signal inlet, and the interference signal is filtered. And the distance of the signal of the mobile phone is short, the signal intensity is enough, and electromagnetic waves have strong diffraction capability except direct radiation, so that the signal can be diffracted to enter the signal inlet and reach the WIFI router in the cover, and the communication can be normally carried out. The frequency is also selected, but not essential, because the signal inlet is always size limited, which limits the wavelength or frequency of the signal inlet. The material for blocking the electromagnetic waves used may be selected according to the wavelength of the electromagnetic waves generated by the antenna inside the casing, and metallic materials such as electrical conductors or magnetic conductors are generally used, but some non-metallic materials are also possible if the wavelength of the electromagnetic waves is very short, such as the nano-waves of visible light.
The electromagnetic wave inlet and outlet can be made longer and made into a flared opening with the caliber increasing from inside to outside or a contracted opening with the caliber decreasing from inside to outside, so that the wave form of the electromagnetic wave signal is more favorably changed gradually without disorder, the interference signal is not easy to enter, and the transmission distance in the inlet and outlet direction is increased. In addition, a section of the inlet and the outlet of the electromagnetic wave can use the wave-absorbing technology or the wave-absorbing material of the electromagnetic wave, so that weak interference signals can be absorbed by the wave-absorbing material when entering the inlet and the outlet of the electromagnetic wave from the side direction, and the interference to the antenna is more difficult to enter from the inlet and the outlet of the electromagnetic wave. The larger the sphere degree of the electromagnetic wave selection cover (wave selection cover) occupied by the internal antenna is, the smaller the interference is, and in order to quantify the sphere degree of the electromagnetic wave selection cover (wave selection cover) occupied by the internal antenna is more than 2 pi (pi is the circumferential rate) or more than 50% of the sphere degree.
Unlike waveguides, one of the main essential features of waveguides of the present invention is to transmit electromagnetic waves inside the tube with minimized losses, while the present invention does not have this requirement, and the present invention preferably uses wave-absorbing materials or techniques that increase the losses of the electromagnetic waves, with better results.
The wave absorbing technology or material includes but is not limited to known technology and material, such as using metal surface with rough finish or metal surface with split or prick, or using ferrite wave absorbing material. In addition, the invention can also adopt the grounding of the electromagnetic wave selection cover (wave selection cover) to reduce the interference, and the grounding can be connected with the ground, and can also be connected with a simulated ground, such as a metal block.
The invention is to block or absorb most of interference signals with weak signals at a long distance, so that the interference signals can not interfere with an antenna in an electromagnetic wave selection cover (wave selection cover), and only the weak interference signals entering from an electromagnetic wave signal inlet and outlet in the forward direction can not be blocked and absorbed easily, but the weak signals are very few, so that the invention can well reduce the signal interference on the antenna.
Because the electromagnetic wave inlet and outlet direction signal facing the electromagnetic wave selection cover is stronger and better, the electromagnetic wave selection cover (the wave selection cover) can be arranged on the rotating shaft, the direction adjustment is convenient, the rotating shaft can be driven by the motor to rotate, and the motor can be controlled by a control circuit (such as a Central Processing Unit (CPU)) of the WIFI router according to a set program so as to control the rotating direction of the wave selection cover, so that a better effect is achieved.
The invention can also adopt a turning structure, so that electromagnetic wave signals can reach the antenna in the cover only by winding a bend through the turning structure after passing through the electromagnetic wave inlet and the electromagnetic wave outlet of the wave selection cover, thereby further reducing the interference of weak signals.
The WIFI router has the advantages that under the condition of low cost, the same frequency or adjacent frequency interference on the WIFI router can be well reduced, the network speed of mobile phone WIFI networking or computer networking can be more stable and faster, and the situations that the network speed is slowed down and the card is changed can be greatly reduced. The invention is actually tested, and the network speed is obviously changed more stably and faster.
The principle of the electromagnetic wave communication of the antenna is mostly the same, so the invention can be widely applied to the wide field of using the electromagnetic wave communication, such as mobile phone 4G communication, 5G communication and the like or the mobile communication of the next generation.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic view of the present invention, which is a cross-sectional view of an electromagnetic wave selection cover with a WIFI router installed therein.
Fig. 2 is a schematic perspective view of the present invention, in which the electromagnetic wave blocking layer is of a mesh structure, and the WIFI router is inside the mesh-shaped cover.
Description of reference numerals: in fig. 1, 1 an electromagnetic wave blocking layer, 2 an electromagnetic wave absorbing material layer, 3 an electromagnetic wave inlet and outlet, 4 a router, and 5 a WIFI antenna of the router.
In fig. 2, 1 is an electron wave blocking layer (metallic aluminum mesh), 4 is a router.
Detailed Description
Fig. 1 is a schematic view of the present invention, in which an electromagnetic wave blocking layer 1 in the figure is made of metal aluminum or metal copper, an electromagnetic wave absorbing material 2 in the figure is made of ferrite wave absorbing material, in which 1 in the figure is made into a long cylindrical structure, two ends of the cylinder are open and are in a flared (bell mouth) shape, and 3 in the figure are electromagnetic wave inlet and outlet, so as to form an electromagnetic wave selecting cover (wave selecting cover), a 4-way router is placed in the middle position inside the cover, a WIFI antenna of a 5-way router in the figure is also inside the cover, when in use, because the router is inside the cover, because an interference signal with weak signal is mostly blocked by the blocking layer 1 when the interference signal does not enter the inlet and outlet of the 3-way electromagnetic wave, and a small part of the interference signal with weak signal is absorbed after encountering the electromagnetic wave absorbing material 2 when the interference signal enters the inlet and outlet of the 3-way electromagnetic wave, therefore, the same frequency or adjacent frequency interference on the router is reduced, and the signal of the WIFI router can still be well used because the distance is generally not very far when the router is used at home, the signal is stronger, the stronger signal has better diffraction capability and can round the inlet and outlet of the entering 3 electromagnetic waves.
The electromagnetic wave blocking layer in fig. 1 may also be a mesh cylinder made of aluminum or copper, as shown in fig. 2, two ends of the mesh cylinder are made into openings and flares (flares are not shown in fig. 2, flares are shown in fig. 1), and an antenna of the WIFI router or the router itself is placed in the mesh cylinder.
Claims (10)
1. An apparatus for reducing interference of an antenna with radio waves, comprising: according to the wavelength of the electromagnetic wave, the antenna is surrounded by the corresponding electromagnetic wave blocking material, and an electromagnetic wave inlet and an electromagnetic wave outlet are reserved to form an electromagnetic wave selection cover, the cover can select the intensity and/or the direction of the electromagnetic wave and/or the wavelength or the frequency of the electromagnetic wave, so that the electromagnetic wave with sufficient intensity and/or suitable direction and/or short wavelength can enter the cover and the antenna for communication, and the interference of the electromagnetic wave outside the cover on the antenna in the cover is reduced or eliminated.
2. The apparatus of claim 1, wherein the antenna is configured to reduce interference from electromagnetic waves: the electromagnetic wave blocking material used is an electrical and/or magnetic conductor.
3. The apparatus of claim 2, wherein the antenna is configured to reduce interference from electromagnetic waves: the electromagnetic wave is selected to cover a part or all of the parts, and wave absorbing technology is used in the cover and/or outside the cover, wherein the wave absorbing technology comprises the adoption of a wave absorbing structure and/or a wave absorbing material.
4. The apparatus of claim 1, wherein the antenna is configured to reduce interference from electromagnetic waves: the shape structure of the electromagnetic wave inlet and outlet is a flaring structure from small to large from the inside of the cover to the outside of the cover, or a necking structure with the caliber reduced from inside to outside.
5. The apparatus of claim 2, wherein the antenna is configured to reduce interference from electromagnetic waves: the electromagnetic wave selection cover adopts grounding to reduce interference, and the grounding can be connected with the ground and also can be connected with a simulated ground, such as a metal block.
6. The apparatus of claim 1, wherein the antenna is configured to reduce interference from electromagnetic waves: the antenna in the cover is a WIFI signal antenna or a mobile phone 4G or 5G signal antenna.
7. The apparatus of claim 1, wherein the antenna is configured to reduce interference from electromagnetic waves: the electromagnetic wave selection cover is directly or indirectly arranged on the rotating shaft.
8. The apparatus of claim 7, wherein the antenna is configured to reduce interference from electromagnetic waves: the rotating shaft can be driven by the motor to rotate, and the control circuit can control the motor according to a set program so as to control the rotating direction of the electromagnetic wave selection cover, thereby controlling the direction of a signal inlet and a signal outlet of the electromagnetic wave selection cover.
9. The apparatus of claim 1, wherein the antenna is configured to reduce interference from electromagnetic waves: a turning structure is arranged in the cover, and electromagnetic wave signals can reach the antenna in the cover only by winding a bend through the turning structure after passing through the electromagnetic wave inlet and outlet of the wave selection cover.
10. The apparatus of claim 3, wherein the antenna is configured to reduce interference from electromagnetic waves: the wave-absorbing technology adopts ferrite wave-absorbing materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464019.XU CN212810552U (en) | 2019-04-08 | 2019-04-08 | Device for reducing antenna interference by radio electromagnetic wave |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464019.XU CN212810552U (en) | 2019-04-08 | 2019-04-08 | Device for reducing antenna interference by radio electromagnetic wave |
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| CN212810552U true CN212810552U (en) | 2021-03-26 |
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| CN201920464019.XU Active CN212810552U (en) | 2019-04-08 | 2019-04-08 | Device for reducing antenna interference by radio electromagnetic wave |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180889A (en) * | 2019-04-08 | 2020-05-19 | 郭长来 | Device for reducing antenna interference by radio electromagnetic wave |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180889A (en) * | 2019-04-08 | 2020-05-19 | 郭长来 | Device for reducing antenna interference by radio electromagnetic wave |
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