CN210958340U - Device for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist - Google Patents
Device for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist Download PDFInfo
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- CN210958340U CN210958340U CN201922006154.2U CN201922006154U CN210958340U CN 210958340 U CN210958340 U CN 210958340U CN 201922006154 U CN201922006154 U CN 201922006154U CN 210958340 U CN210958340 U CN 210958340U
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Abstract
The utility model relates to an equipment of reinforcing SNR when wiFi, 4G and WiMAX coexist, equipment includes wireless processing module and antenna be connected with a wave filter between wireless processing module and the antenna, the wave filter concatenates by a LC series circuit and a LC parallel circuit and constitutes, LC series circuit is used for the signal of filtering antenna received lower frequency, LC parallel circuit is used for the signal of filtering antenna received higher frequency. The utility model discloses can effectively reduce the manufacturing cost of product to it is adjustable to realize receiving and dispatching frequency.
Description
Technical Field
The utility model relates to a wireless communication technology field, in particular to equipment of reinforcing SNR when wiFi, 4G and WiMAX coexist.
Background
The transmission of wireless signals such as 4G, WIFI, WIMAX and the like in the same air medium can increase the noise of other wireless signals, reduce the signal-to-noise ratio of the signals, and finally show that the wireless transceiving rate is reduced.
One of the current common practices is to use a shielding case in the device to shield the transceiver circuitry or to use a modular band pass or low pass filter in the transceiver circuitry for filtering.
In the method, the use of the shielding case can obviously increase the processing procedure and difficulty of equipment, thereby causing the production cost of products to be sharply increased and being not beneficial to the heat dissipation of the transceiving circuit. On the other hand, because the parameters of the band-pass filter or the low-pass filter are fixed, the transceiving frequency of the transceiving circuit cannot be adjusted, so that the product is very inconvenient to repair and debug, and the production and maintenance cost of the product is directly increased.
SUMMERY OF THE UTILITY MODEL
Therefore, a device for enhancing the signal-to-noise ratio when WiFi, 4G and WiMAX coexist is needed, which can effectively reduce the production cost of the product and realize adjustable transceiving frequency.
In order to achieve the above purpose, the present invention adopts the following technical solutions.
The utility model provides a reinforcing SNR's equipment when wiFi, 4G and WiMAX coexist, equipment includes wireless processing module and antenna be connected with a wave filter between wireless processing module and the antenna, the wave filter concatenates by a LC series circuit and a LC parallel circuit and constitutes, LC series circuit is used for the signal of filtering antenna received lower frequency, LC parallel circuit is used for the signal of filtering antenna received higher frequency.
Preferably, the filter is disposed inside the antenna, and the antenna has a receiving circuit printed by a PCB board.
Preferably, the filter is arranged in parallel with the receiving circuit.
Preferably, the wireless processing module is a WIFI module.
Preferably, the LC series circuit includes a first capacitor and a first inductor, the first capacitor is an adjustable capacitor, and the first inductor is an adjustable inductor.
Preferably, the capacitance value of the first capacitor is 10pf, and the inductance value of the first inductor is 2.4 nh.
Preferably, the LC parallel circuit includes a second capacitor and a second inductor, the second capacitor is an adjustable capacitor, and the second inductor is an adjustable inductor.
Preferably, the capacitance value of the second capacitor is 0.5pf, and the inductance value of the second inductor is 1.5 nh.
Preferably, the device has at least two antennas, each antenna being provided with one of the filters in parallel.
Preferably, the device is a wireless router.
The utility model discloses a concatenate the wave filter of constituteing by a LC series circuit and a LC parallel circuit, the signal of the lower frequency of accessible LC series circuit filtering antenna received, through the signal of the higher frequency of LC parallel circuit filtering antenna received, in order to obtain the dominant frequency signal of needs, reach the effect at wiFi, reinforcing equipment SNR when 4G and WiMAX signal coexist, and this wave filter only comprises electric capacity and inductance, the component is with low costs, thereby can effectively reduce the manufacturing cost of product, the simplification produces the degree of difficulty. Meanwhile, if the LC series circuit and the LC parallel circuit adopt adjustable capacitors and inductors, the frequency required to be selected can be adjusted, so that the debugging of products when leaving a factory is greatly facilitated, and the production and adjustment efficiency of the products is improved.
Drawings
FIG. 1 is a schematic block diagram of an apparatus for enhancing SNR when WiFi, 4G and WiMAX coexist in an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a filter according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an apparatus for enhancing snr when WiFi, 4G and WiMAX coexist in an embodiment of the present invention.
Detailed Description
The following further description is made with reference to the drawings and specific embodiments.
As shown in fig. 1 to fig. 3, the present embodiment provides a device for enhancing a signal-to-noise ratio when WiFi, 4G and WiMAX coexist, where the device includes a wireless processing module and an antenna, a filter is connected between the wireless processing module and the antenna, the filter is formed by connecting an LC series circuit and an LC parallel circuit in series, the LC series circuit is configured to filter a lower-frequency signal received by the antenna, and the LC parallel circuit is configured to filter a higher-frequency signal received by the antenna.
As is well known, the frequency band of WIFI is 2.4GHZ or 5GHZ, the frequency band of 4G cellular signals is 1755-2655 MHz, and the frequency band of WiMAX signals is 2.3GHz, 2.5-2.7 GHz or 3.5 GHz.
When the wireless signals of the three bands exist simultaneously, the communication device receives the wireless signals simultaneously, and if harmonic interference cannot be effectively processed, the signal-to-noise ratio of the received main frequency signal is reduced, so that the wireless transceiving rate is reduced. Therefore, in this embodiment, the filter formed by connecting the LC series circuit and the LC parallel circuit in series is used to filter signals other than the main frequency, the LC series circuit is used to filter harmonic signals with a frequency lower than that of the main frequency signal, and the LC parallel circuit is used to filter harmonic signals with a frequency higher than that of the main frequency signal, so as to obtain a relatively pure main frequency signal.
Further, the filter is arranged inside the antenna, the antenna is provided with a receiving circuit formed by printing a PCB, and the filter and the receiving circuit are arranged in parallel. By directly filtering the wireless signals received by the receiving circuit, the circuit structure can be simplified, and the response speed can be improved.
In this embodiment, the wireless processing module is a WIFI module, and the device is a wireless router. The functions and principles of the present invention will be described in detail below with reference to a wireless router as an example.
LC series circuit includes first electric capacity C1 and first inductance L1, first electric capacity C1 is adjustable electric capacity, first inductance L1 is adjustable inductance, makes the wave filter of this embodiment can realize adjustable filtering, conveniently debugs the product when product production, and the debugging space is great, can adapt to the frequency range of broad, realizes that receiving and dispatching frequency is adjustable.
Preferably, when the device is a wireless router, the capacitance value of the first capacitor is set to 10pf, the inductance value of the first inductor is set to 2.4nh, and the WIFI signal transceiving rate is high.
Similarly, the LC parallel circuit includes a second capacitor C2 and a second inductor L2, the second capacitor C2 is an adjustable capacitor, and the second inductor L2 is an adjustable inductor.
Preferably, when the device is a wireless router, the capacitance value of the second capacitor is 0.5pf, and the inductance value of the second inductor is 1.5nh, so that the device has better filtering performance and faster WIFI signal transceiving rate.
The device of this embodiment has at least two antennas, and each antenna all connects in parallel and is provided with one the filter, therefore, can be applicable to the equipment of many MIMO antennas.
After the filter is adopted, the function of flattening the wave crest can be realized for broadband noise. For narrow-band noise, it can be made narrower and the amplitude can be reduced to optimize the main frequency waveform and achieve the best transceiving state.
To sum up, the utility model discloses a concatenate the wave filter of constituteing by a LC series circuit and a LC parallel circuit, the signal of the lower frequency of accessible LC series circuit filtering antenna received, through the signal of the higher frequency of LC parallel circuit filtering antenna received to obtain the dominant frequency signal of needs, reach the effect at wiFi, reinforcing equipment SNR when 4G and WiMAX signal coexist, this wave filter only comprises electric capacity and inductance moreover, the component is with low costs, thereby can effectively reduce the manufacturing cost of product, simplify the production degree of difficulty. Meanwhile, if the LC series circuit and the LC parallel circuit adopt adjustable capacitors and inductors, the frequency required to be selected can be adjusted, so that the debugging of products when leaving a factory is greatly facilitated, and the production and adjustment efficiency of the products is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. A device for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist, the device comprises a wireless processing module and an antenna, and is characterized in that: a filter is connected between the wireless processing module and the antenna, the filter is formed by connecting an LC series circuit and an LC parallel circuit in series, the LC series circuit is used for filtering signals with lower frequency received by the antenna, and the LC parallel circuit is used for filtering signals with higher frequency received by the antenna.
2. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist according to claim 1 wherein: the filter is arranged in the antenna, and the antenna is provided with a receiving circuit formed by printing a PCB.
3. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist according to claim 2 wherein: the filter is arranged in parallel with the receiving circuit.
4. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist according to claim 1, 2 or 3 wherein: the wireless processing module is a WIFI module.
5. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist according to claim 1 wherein: the LC series circuit comprises a first capacitor and a first inductor, wherein the first capacitor is an adjustable capacitor, and the first inductor is an adjustable inductor.
6. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist according to claim 5 wherein: the capacitance value of the first capacitor is 10pf, and the inductance value of the first inductor is 2.4 nh.
7. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist according to claim 1 wherein: the LC parallel circuit comprises a second capacitor and a second inductor, the second capacitor is an adjustable capacitor, and the second inductor is an adjustable inductor.
8. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist according to claim 7 wherein: the capacitance value of the second capacitor is 0.5pf, and the inductance value of the second inductor is 1.5 nh.
9. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist as claimed in any one of claims 5 to 8, wherein: the device is provided with at least two antennas, and each antenna is provided with one filter in parallel.
10. The apparatus for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist according to claim 9 wherein: the device is a wireless router.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922006154.2U CN210958340U (en) | 2019-11-20 | 2019-11-20 | Device for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922006154.2U CN210958340U (en) | 2019-11-20 | 2019-11-20 | Device for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist |
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| CN210958340U true CN210958340U (en) | 2020-07-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768683A (en) * | 2019-11-20 | 2020-02-07 | 深圳市钮为通信技术有限公司 | Device for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768683A (en) * | 2019-11-20 | 2020-02-07 | 深圳市钮为通信技术有限公司 | Device for enhancing signal-to-noise ratio when WiFi, 4G and WiMAX coexist |
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Effective date of registration: 20210301 Address after: 518000 R & D room 2201, block a, building 7, Wanke Yuncheng phase I, Xingke 1st Street, Xili community, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN YOUHUA TECHNOLOGY Co.,Ltd. Address before: 518000 room 1203, entrepreneurship Park, Lishan road University Town, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN NIUWEI COMMUNICATION TECHNOLOGY Co.,Ltd. |