Multi-channel WIFI signal transceiver

Abstract

The present application relates to a multi-channel WIFI signal transceiver. The device includes more than two wireless hotspot devices, more than two bandpass filtering devices, more than two frequency shifting devices, more than two antenna switch devices and an antenna device. The wireless hotspot device, the bandpass filtering device, the frequency shifting device, the antenna switch device and the antenna device are connected in sequence. The antenna device includes at least two stacked antenna array layers, and the antenna array layer is connected to the antenna switch device. The frequency shifting device can move the high-frequency band signal to the low-frequency band. Since the low-frequency band signal has a longer wavelength and stronger penetration, the coverage range of the WIFI signal can be increased, and it is not blocked by obstacles such as buildings or trees, and is more suitable for bad weather. The wireless hotspot device, the bandpass filtering device, the frequency shifting device, the antenna switch device and the antenna array layer are all more than two, which can form a multi-input and multi-output signal transmission channel, thereby improving the reliability of the multi-channel WIFI signal transceiver.

Description

Technical Field

[0001] The present application relates to the field of wireless technology, and in particular to a multi-channel WIFI signal transceiver. Background Art

[0002] WIFI is a wireless LAN technology created based on the IEEE 802.11 standard, which improves the interoperability between wireless network products based on this standard. WIFI is a short-range wireless technology with advantages such as fast transmission speed, low transmission power and no need for wiring. It can meet the needs of personal and social informatization. In the case of weak signals, the bandwidth can be automatically adjusted to effectively ensure the stability and reliability of the network.

[0003] The coverage of WIFI signals transmitted by traditional WIFI signal transmission devices is limited. Users cannot receive WIFI signals in areas beyond the coverage of WIFI, which affects the normal use of users and has low reliability. Summary of the invention

[0004] Based on this, it is necessary to provide a multi-channel WIFI signal transceiver to address the problem of low reliability of traditional WIFI signal transmission devices.

[0005] A multi-channel WIFI signal transceiver comprises a wireless hotspot device, a bandpass filtering device, a frequency shifting device, an antenna switch device and an antenna device, wherein the wireless hotspot device is connected to the bandpass filtering device, the bandpass filtering device is connected to the frequency shifting device, the frequency shifting device is connected to the antenna switch device, the antenna switch device is connected to the antenna device, the antenna device comprises at least two stacked antenna array layers, the antenna array layers are connected to the antenna switch device; the number of the antenna switch devices is more than two, and each of the antenna switch devices is respectively connected to a corresponding antenna array layer, the number of the frequency shifting device, the bandpass filtering device and the wireless hotspot device is equal to the number of the antenna switch devices, and each of the frequency shifting devices is respectively connected to a corresponding bandpass filtering device, and each of the bandpass filtering devices is respectively connected to a corresponding wireless hotspot device.

[0006] The above-mentioned multi-channel WIFI signal transceiver device, the wireless hotspot device is used to generate WIFI signals, and the generated WIFI signals are sent to the frequency shifting device after being filtered by the bandpass filtering device. The frequency shifting device can realize the frequency shifting of the signal, and move the high-frequency band signal to the low-frequency band. The moved signal is then transmitted through the antenna switch device and the antenna device. Since the low-frequency band signal has a longer wavelength and stronger penetration, the coverage of the WIFI signal can be increased by moving the WIFI signal to the low-frequency band and then transmitting it through the antenna device, and it is not blocked by obstacles such as buildings or trees, and is more suitable for bad weather. The antenna device includes more than two stacked antenna array layers, the number of antenna switch devices is more than two, and each antenna switch device is respectively connected to the corresponding antenna array layer, the number of frequency shifting devices, bandpass filtering devices and wireless hotspot devices is equal to the number of antenna switch devices, which are all more than two, and each frequency shifting device is respectively connected to the corresponding bandpass filtering device, and each bandpass filtering device is respectively connected to the corresponding wireless hotspot device, which can form a multi-input and multi-output signal transmission channel, and improve the reliability of the multi-channel WIFI signal transceiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a structural diagram of a multi-channel WIFI signal transceiver in one embodiment;

[0008] Figure 2 It is a structural diagram of a multi-channel WIFI signal transceiver in another embodiment;

[0009] Figure 3 It is a structural diagram of a multi-channel WIFI signal transceiver in another embodiment;

[0010] Figure 4 is a structural diagram of an antenna device in one embodiment;

[0011] Figure 5 It is a structural diagram of a multi-channel WIFI signal transceiver in another embodiment;

[0012] Figure 6 FIG. 4 is a structural diagram of a multi-channel WIFI signal transceiver in yet another embodiment. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is described more comprehensively below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0014] In one embodiment, see Figure 1, a multi-channel WIFI signal transceiver device is provided, including a wireless hotspot device 100, a bandpass filtering device 200, a frequency shifting device 300, an antenna switch device 400 and an antenna device 500, the wireless hotspot device 100 is connected to the bandpass filtering device 200, the bandpass filtering device 200 is connected to the frequency shifting device 300, the frequency shifting device 300 is connected to the antenna switch device 400, the antenna switch device 400 is connected to the antenna device 500, the antenna device 500 includes at least two stacked antenna array layers 510, the antenna array layer 510 is connected to the antenna switch device 400, the number of antenna switch devices 400 is more than two, and each antenna switch device 400 is respectively connected to a corresponding antenna array layer 510, the number of frequency shifting devices 300, bandpass filtering devices 200 and wireless hotspot devices 100 is equal to the number of antenna switch devices 400, and each frequency shifting device 300 is respectively connected to a corresponding bandpass filtering device 200, and each bandpass filtering device 200 is respectively connected to a corresponding wireless hotspot device 100. The wireless hotspot device 100 is used to generate a WIFI signal. The generated WIFI signal is filtered by the bandpass filter device 200 and then sent to the frequency shift device 300. The frequency shift device 300 can realize the frequency shift of the signal, shifting the high frequency band signal to the low frequency band, and the shifted signal is then transmitted through the antenna switch device 400 and the antenna device 500. Since the low frequency band signal has a longer wavelength and stronger penetration, the coverage of the WIFI signal can be increased by shifting the WIFI signal to the low frequency band and then transmitting it through the antenna device 500. It is not blocked by obstacles such as buildings or trees, is more suitable for bad weather, and has high reliability.

[0015] Specifically, the wireless hotspot device 100 mainly provides access from the multi-channel WIFI signal transceiver device to the wired local area network and from the wired local area network to the multi-channel WIFI signal transceiver device, and the wireless workstations within the coverage of the access point of the wireless hotspot device 100 can communicate with each other through it. When transmitting a WIFI signal, the wireless hotspot device 100 accesses the network for processing and then sends it to the bandpass filter device 200 in the form of a WIFI signal. The bandpass filter device 200 filters and then sends it to the frequency shifting device 300. The frequency shifting device 300 can realize the frequency shifting of the signal, shifting the high frequency band signal to the low frequency band, and the shifted signal is then transmitted through the antenna switch device 400 and the antenna device 500. When receiving WIFI signals, the antenna device 500 can sense the electromagnetic signal in the space and then send it to the antenna switch device 400. The antenna switch device 400 transmits the signal to the frequency shifting device 300. The frequency shifting device 300 can realize the frequency shifting of the signal, shifting the low-frequency band signal to the high-frequency band. The shifted signal is then transmitted to the bandpass filtering device 200 for filtering processing. The filtered signal is sent to the wireless hotspot device 100, so that the user can access the multi-channel WIFI signal transceiver device from the wired local area network through the wireless hotspot device 100.

[0016] The bandpass filter device 200 is mainly used to filter the signals passing through, allowing signals of a specific frequency band to pass through while shielding signals of other frequency bands. According to different actual needs, the bandpass filter device 200 with different structures can be used, so that the signals of the frequency bands retained and filtered out are also different, so as to have a wider range of applications.

[0017] The frequency shifting device 300 uses analog mixer technology to shift high-frequency signals to low-frequency signals or shift low-frequency signals to high-frequency signals. The structure of the frequency shifting device 300 is not unique. For example, an analog multiplier frequency converter or a transistor mixer may be used. It can be understood that the frequency shifting device 300 may also use other structures as long as the technicians in this field believe it can be implemented.

[0018] The number of frequency shifting devices 300, bandpass filtering devices 200 and wireless hotspot devices 100 is equal to the number of antenna switch devices 400, and each frequency shifting device 300 is respectively connected to a corresponding bandpass filtering device 200, and each bandpass filtering device 200 is respectively connected to a corresponding wireless hotspot device 100. In each signal channel, one antenna switch device 400 is correspondingly connected to one frequency shifting device 300, one bandpass filtering device 200 is correspondingly connected to one frequency shifting device 300, and one wireless hotspot device 100 is correspondingly connected to one bandpass filtering device 200, which can maintain the independence of signal transmission between each channel and avoid mutual interference of signals. The multi-channel WIFI signal transceiver includes multiple signal channels and has a wide range of applications.

[0019] The antenna switch device 400 can control the signal on and off between the antenna device 500 and the frequency shifting device 300. When the multi-channel WIFI signal transceiver device needs to work, the antenna switch device 400 is turned on, and the antenna device 500 and the frequency shifting device 300 can transmit signals normally. When the antenna switch device 400 is disconnected, the multi-channel WIFI signal transceiver device is in a standby state. The antenna device 500 is a carrier for receiving and sending signals. The antenna device 500 can sense electromagnetic signals in space and can also transmit signals to realize the transmission and reception of WIFI signals, which is convenient to use. The number of antenna switch devices 400 is more than two, and each antenna switch device 400 is respectively connected to a corresponding antenna array layer 510. Further, the number of antenna array layers 510 respectively connected to each antenna switch device 400 can be completely the same, partially the same, or completely different. Each antenna switch device 400 is connected to a corresponding antenna array layer 510 to form a signal transceiver channel, forming a multi-input and multi-output structure. In one embodiment, the numbers of antenna array layers 510 connected to each antenna switch device 400 are different from each other. For example, the number of antenna array layers 510 connected to each antenna switch device 400 can be increased sequentially, and the corresponding signal transceiver channel can be selected according to actual needs, thereby improving the operating convenience of the multi-channel WIFI signal transceiver device.

[0020] The antenna device 500 includes at least two stacked antenna array layers 510, which can add a longitudinal dimension on the basis of the two-dimensional antenna plane array layer, form beam synthesis at the far end of the radiation direction, so that the antenna device 500 has a higher gain. For example, when the number of antenna array layers 510 is two layers, the gain can be increased by 3dB in theory. When the number of antenna array layers 510 is three layers, the gain can be increased by 5dB in theory. When the number of antenna array layers 510 is more than three layers, a higher gain can be increased, so that the WIFI signal received and sent by the multi-channel WIFI signal transceiver device has a longer transmission distance, a larger coverage range, and high reliability. In addition, the antenna device 500 including at least two stacked antenna array layers 510 is a three-dimensional structure. The configuration of the three-dimensional structure can effectively improve the space utilization efficiency, enrich the configuration of the antenna device 500, and reduce costs.

[0021] In one embodiment, see Figure 2The multi-channel WIFI signal transceiver device also includes a control device 900 and a measuring device 800. The number of the measuring devices 800 is equal to the number of the wireless hotspot devices 100. Each measuring device 800 is connected to the corresponding wireless hotspot device 100. Each measuring device 800 is connected to the control device 900. The control device 900 is connected to the wireless hotspot device 100. The measuring device 800 is used to measure the connection signal of each wireless hotspot device 100, and the measurement result is sent to the control device 900. The control device 900 controls the output power of each wireless hotspot device 100 according to the measurement result.

[0022] Specifically, in a signal channel, a measuring device 800 is connected to a wireless hotspot device 100, and the measuring device 800 is used to measure the connection signal of the wireless hotspot device 100, and the measurement result is sent to the control device 900. Since the number of the measuring device 800 and the wireless hotspot device 100 is more than two, the multi-channel WIFI signal transceiver includes multiple signal transceiver channels, and the measuring device 800 in each signal channel measures the connection signal of the wireless hotspot device 100, and the measurement result is sent to the control device 900. After the control device 900 receives the measurement results of each channel, it controls the output power of the wireless hotspot device 100 in each signal channel according to the measurement results, for example, increasing the output power of some wireless hotspot devices 100, reducing the output power of some wireless hotspot devices 100, or maintaining the output power of some wireless hotspot devices 100 unchanged. The structure of the measuring device 800 is not unique, and different structures can correspond to different signal types, which can be adjusted according to actual needs as the basis for the control device 900 to control the output power of the wireless hotspot device 100. The type of control device 900 is not unique, for example, it can be CPLD (Complex Programmable Logic Device), FPGA (Field-Programmable Gate Array) or single-chip microcomputer. CPLD as the control device 900 has the advantages of flexible programming, high integration, wide application range and low design and manufacturing cost. FPGA as the control device 900 has low design cost and high working stability. Single-chip microcomputer has the advantages of small size, simple structure and high reliability. It can be understood that in other embodiments, the control device 900 can also use other devices as long as those skilled in the art believe that it can be implemented.

[0023] In one embodiment, the measurement result includes a received signal strength indicator value. The control device 700 is used to control the output power of the wireless hotspot device 100 according to the received signal strength indicator value and preset signal strength reference data.

[0024] Specifically, the received signal strength indicator value, namely the RSSI (Received Signal Strength Indicator) value, is the broadband received power on the received channel bandwidth, which can be used as one of the bases for evaluating the quality of the data connection. The preset signal strength reference data can be a preset upper limit value, a lower limit value or a reference range. Taking the preset signal strength reference data as a preset upper limit value as an example, when the received signal strength indicator value sent by the measuring device 800 exceeds the upper limit value, it is considered that there is reverse link interference in the data transmission channel. At this time, the control device 900 controls the wireless hotspot device 100 in the signal channel to reduce the output power to reduce the impact of signal interference and improve the reliability of signal transmission. It can be understood that in other embodiments, when the preset signal strength reference data is a preset lower limit value or a reference range, when the received signal strength indicator value sent by the measuring device 800 is lower than the preset lower limit value or exceeds the preset reference range, the control device 900 can make corresponding adjustments to the output power of the wireless hotspot device 100 to improve the working performance of the wireless hotspot device 100. When the measurement result includes a received signal strength indicator value, the corresponding measuring device 800 may be a chip of model CC2530, which has a high degree of integration and can obtain an accurate RSSI value.

[0025] In one embodiment, the measurement result includes a channel quality indicator value. The control device 900 is used to control the output power of the wireless hotspot device 100 according to the channel quality indicator value and preset channel quality reference data.

[0026] Specifically, the channel quality indicator value, namely the CQI (Channel Quality Indicator) value, is one of the measurement standards for the communication quality of the wireless channel, and corresponds to the signal-to-noise ratio of the channel, which means that the CQI is directly related to the network coverage. Generally speaking, the value range of CQI is 0 to 31. When the CQI value is 0, the channel quality is the worst, and when the CQI value is 31, the channel quality is the best. The common value is 12 to 24. The preset channel quality reference data can be a preset upper limit value, a lower limit value or a reference range. Taking the preset channel quality reference data as a preset upper limit value as an example, when the received signal strength indicator value sent by the measuring device 800 exceeds the upper limit value, it is considered that the signal quality transmitted in the data transmission channel is high. At this time, the control device 900 can control the wireless hotspot device 100 to appropriately reduce the output power to save the resource cost of the wireless hotspot device 100 and improve the reliability of the multi-channel WIFI signal transceiver.

[0027] In one embodiment, the measurement result includes an access load value. The control device 900 is used to control the output power of each wireless hotspot device 100 according to the access load value and preset access load reference data.

[0028] Specifically, under the action of the high-gain antenna device 500, the coverage of the WIFI signal increases, and the multi-channel WIFI signal transceiver includes multiple signal channels, which may cause the problem of unbalanced load of the wireless hotspot device 100. The measuring device 800 measures the load connected to the wireless hotspot device 100 in each signal channel to obtain the measurement result and sends it to the control device 900. The control device 900 is used to control the output power of each wireless hotspot device 100 according to the access load value and the preset access load reference data. The preset access load reference data may be a preset upper limit value, a lower limit value or a reference range. For example, when the preset access load reference data is a preset upper limit value, when the access load value sent by a certain measuring device 800 exceeds the upper limit value, it is considered that the load of the wireless hotspot device 100 in the data transmission channel is too large. At this time, the control device 900 controls the wireless hotspot device 100 to appropriately reduce the output power, and can also control the wireless hotspot devices 100 in other signal channels to appropriately increase the output power, thereby guiding some users of the heavily loaded wireless hotspot device 100 to the nearby relatively idle wireless hotspot devices 100 to achieve the effect of load balancing and increase the throughput of the network. Furthermore, when the access load of the wireless hotspot device 100 is not within a suitable range, the number of antenna array layers 510 used for access in the signal channel where the wireless hotspot device 100 is located can also be adjusted to adjust the signal coverage range of the multi-channel WIFI signal transceiver device, thereby achieving the effect of adjusting the access load of the wireless hotspot device 100.

[0029] In one embodiment, the measurement result includes the number of access users. The control device 900 is used to control the output power of each wireless hotspot device 100 according to the number of access users and preset reference data of the number of access users.

[0030] Specifically, the measuring device 800 measures the number of users accessing the wireless hotspot device 100 in each signal channel to obtain a measurement result and sends it to the control device 900. The control device 900 is used to control the output power of each wireless hotspot device 100 according to the number of access users and the preset reference data of the number of access users. The preset reference data of the number of access users can be a preset upper limit value, a lower limit value or a reference range. For example, when the preset reference data of the number of access users is a preset upper limit value, when the value of the number of access users sent by a certain measuring device 800 exceeds the upper limit value, it is considered that there are too many users accessing the wireless hotspot device 100 in the data transmission channel. At this time, the control device 900 controls the wireless hotspot device 100 to appropriately reduce the output power, and can also control the wireless hotspot devices 100 in other signal channels to appropriately increase the output power, so that some users of this wireless hotspot device 100 stay on the relatively idle nearby wireless hotspot devices 100, and guide users to stay evenly on each wireless hotspot device 100, so as to optimize network performance. Furthermore, when the number of users accessing the wireless hotspot device 100 is not within an appropriate range, the number of antenna array layers 510 accessed and used in the signal channel where the wireless hotspot device 100 is located can also be adjusted to adjust the signal coverage range of the multi-channel WIFI signal transceiver device, thereby achieving the effect of adjusting the number of users accessing the wireless hotspot device 100.

[0031] Further, the measurement result includes at least one of the received signal strength indicator value, channel quality indicator value, access load value and the number of access users. Taking the measurement result including the signal strength indicator value, channel quality indicator value, access load value and the number of access users as an example, the control device 900 is provided with corresponding signal strength reference data, channel quality reference data, access load reference data and access user number reference data. The measurement result is compared with the reference data of the corresponding signal type, and the control device 900 controls the output power of the wireless hotspot device 100 according to the comparison result. When the measurement result includes the signal strength indicator value, channel quality indicator value, access load value and the number of access users, further judgment rules can be set to determine the comparison priority of different types of signals. For example, priority or weight coefficients are set for different signal types. Specifically, taking the setting of weight coefficients as an example, the control device 900 can perform weighted summation according to different types of values ​​and corresponding weight coefficients, and compare the summation result with the preset reference data to control the output power of the wireless hotspot device 100.

[0032] In one embodiment, see Figure 3The bandpass filtering device 200 includes a first bandpass filter 210 and a second bandpass filter 220, the frequency shifting device 300 includes a transmitting channel frequency shifter 310 and a receiving channel frequency shifter 320, the first bandpass filter 210 is connected to the wireless hotspot device 100, the transmitting channel frequency shifter 310 is connected to the first bandpass filter 210, the antenna switch device 400 is connected to the transmitting channel frequency shifter 310, the second bandpass filter 220 is connected to the wireless hotspot device 100, the receiving channel frequency shifter 320 is connected to the second bandpass filter 220, and the antenna switch device 400 is connected to the receiving channel frequency shifter 320.

[0033] Specifically, the transmission and reception of WIFI signals in the multi-channel WIFI signal transceiver are transmitted through the signal transmission channel and the signal receiving channel respectively. The signal transmission channel includes the first bandpass filter 210 and the transmission channel frequency shifter 310, and the signal receiving channel includes the second bandpass filter 220 and the receiving channel frequency shifter 320. When transmitting a signal, the wireless hotspot device 100 generates a WIFI signal. The frequency of the signal generated at this time is generally high. After the high-frequency signal is transmitted to the first bandpass filter 210, only the signal of a specific frequency band is retained, and then transmitted to the first frequency shifter. The first frequency shifter shifts the signal of the specific frequency band to a low frequency band and then sends it to the antenna switch device 400. The antenna device 500 receives the signal transmitted by the antenna switch device 400 and radiates it into space, completing the transmission of the WIFI signal. Since the signal transmitted by the antenna device 500 is a low-frequency signal, it has strong penetration ability and a large signal coverage range. When receiving a signal, the antenna device 500 receives the electromagnetic signal in space and sends it to the second bandpass filter 220 via the antenna switch device 400. The second bandpass filter 220 filters out the noise in the signal and then sends it to the wireless hotspot device 100. The wireless hotspot device 100 processes the signal and completes the reception of the WIFI signal.

[0034] In this embodiment, taking the example that the number of antenna array layers 510 connected to each antenna switch device 400 increases in sequence, the number of antenna switch devices 400 is N, the first antenna switch device 400 is connected to two antenna array layers 510, the second antenna switch device 400 is connected to three antenna array layers 510, and so on, the Nth antenna switch device 400 is connected to N+1 antenna array layers 510. Taking the first antenna switch device 400 as an example, two antenna array layers 510 are connected to the antenna switch device 400, the antenna switch device 400 is sequentially connected to the transmission channel frequency shifter 310, the first bandpass filter 210 and the wireless hotspot device 100, and the antenna switch device 400 is also sequentially connected to the receiving channel frequency shifter 320, the second bandpass filter 220 and the wireless hotspot device 100, forming a signal transmission channel and a signal reception channel respectively. By independently configuring each antenna switch device 400 with a set of frequency shifting devices 300 and bandpass filtering devices 200, a multi-channel signal transmission channel and a signal receiving channel are formed, and a multi-beam configuration can be realized, thereby expanding the application scope of the multi-channel WIFI signal transceiver. Since the number of antenna array layers 510 connected to each antenna switch device 400 is different, the gain effect of each antenna switch device 400 is also different. Specifically, the more the number of antenna array layers 510, the higher the gain. In actual use, the corresponding number of antenna array layers 510 can be adjusted according to the requirements of signal strength and coverage, which is conducive to the rational use of resources and improves the reliability of the multi-channel WIFI signal transceiver.

[0035] The types of the first bandpass filter 210, the second bandpass filter 220, the transmission channel frequency shifter 310 and the reception channel frequency shifter 320 are not unique. In this embodiment, taking the high-frequency signal frequency of 2.4 GHz and the low-frequency signal frequency of 700 MHz as an example, the first bandpass filter 210 and the second bandpass filter 220 are both 2.4 GHz bandpass filters, which only allow signals with a frequency of 2.4 GHz to pass through and filter out signals of other frequencies to improve the quality of the transmission signal. The transmission channel frequency shifter 310 is a 2.4 GHz to 700 MHz frequency shifter, which converts the high-frequency signal with a frequency of 2.4 GHz into a low-frequency signal of 700 MHz and then transmits it through the antenna switch device 400 and the antenna device 500, which is conducive to improving the coverage of the signal. The receiving channel frequency shifter 320 is a 700MHz to 2.4GHz frequency shifter, which converts the low-frequency signal of 700MHz into a high-frequency signal of 2.4GHz and then sends it to the second bandpass filter 220. The second bandpass filter 220 filters out signals of other frequencies and only retains the signal of 2.4GHz and then sends it to the wireless hotspot device 100 for network conversion and sharing, which is conducive to improving the working performance of the WIFI signal. It can be understood that the frequency of the high-frequency band signal is not limited to 2.4GHz, but can also be 3.5GHz, 5.8GHz or other frequencies, and the frequency of the low-frequency band signal is not limited to 700MHz, but can also be 400MHz, 800MHz Hz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 3300MHz or other frequencies, as long as the technicians in this field think it can be realized. The transmission and reception of signals by different lines can reduce the mutual interference between the transmission channel and the receiving channel and improve the performance of signal transmission.

[0036] The working state switching of receiving or transmitting WIFI signals can also be realized by the antenna switch device 400, which includes a signal receiving circuit, a signal transmitting circuit and a switching switch. The switching switch is connected to the antenna device 500, and is connected to the receiving channel frequency shifter 320 through the signal receiving circuit, and is connected to the transmitting channel frequency shifter 310 through the signal transmitting circuit. When the switching switch is connected to the signal transmitting circuit, the antenna switch device 400 controls the antenna device 500 to be in the transmitting state. When the switching switch is connected to the signal receiving circuit, the antenna switch device 400 controls the antenna device 500 to be in the receiving state. When the switching switch is in the open circuit state, the antenna device 500 does not work and the device is in the shutdown state. The switching switch can be connected to the controller to switch the working state of the antenna device 500 between transmitting, receiving or shutdown according to the control signal sent by the controller, or the switching switch can also be manually controlled, and the user can manually switch the working state according to his own needs.

[0037] In one embodiment, see Figure 3 The multi-channel WIFI signal transceiver device also includes a third bandpass filter 610 , one end of the third bandpass filter 610 is connected to the transmission channel frequency shifter 310 , and the other end is connected to the antenna switch device 400 .

[0038] The type of the third bandpass filter 610 is not unique. For example, when the high-band signal frequency is 2.4 GHz and the low-band signal frequency is 700 MHz, the transmission channel frequency shifter 310 is a 2.4 GHz to 700 MHz frequency shifter, which can convert the high-frequency signal with a frequency of 2.4 GHz into a low-frequency signal with a frequency of 700 MHz and then send it to the third bandpass filter 610. The third bandpass filter 610 is a 700 MHz bandpass filter, which can ensure that the signal sent to the antenna switch device 400 only includes the low-frequency signal with a frequency of 700 MHz, thereby improving the purity of the signal. It can be understood that in other embodiments, the third bandpass filter 610 can also be a bandpass filter of other frequencies, which is determined by the frequency of the signal converted by the transmission channel frequency shifter 310 connected to the bandpass filter to ensure the frequency requirement of the signal.

[0039] In one embodiment, see Figure 3 The multi-channel WIFI signal transceiver device further includes a transmitting channel amplifier 710 and a receiving channel amplifier 720. One end of the transmitting channel amplifier 710 is connected to the transmitting channel frequency shifter 310, and the other end is connected to the third bandpass filter 610. One end of the receiving channel amplifier 720 is connected to the receiving channel frequency shifter 320, and the other end is connected to the antenna switch device 400. The transmitting channel amplifier 710 and the receiving channel amplifier 720 can amplify the signal to improve the reliability of signal transmission.

[0040] Specifically, the types of the transmitting channel amplifier 710 and the receiving channel amplifier 720 are not unique. For example, in this embodiment, the transmitting channel amplifier 710 is a power amplifier, and the receiving channel amplifier 720 is a low noise amplifier. When sending a WIFI signal, the wireless hotspot device 100 sends the signal to the power amplifier for power amplification, so that the output signal has a large enough power to meet the demand. The amplified signal is radiated into the space by the antenna device 500 through the antenna switch device 400, thereby realizing the sending of the WIFI signal. When receiving a WIFI signal, the antenna device 500 can sense the electromagnetic signal in the space and then send it to the antenna switch device 400. The antenna switch device 400 transmits the signal to the low noise amplifier for amplification. The amplified signal is sent to the wireless hotspot device 100 via the bandpass filter device 200 for demodulation to obtain the WIFI signal, thereby realizing the reception of the WIFI signal. It can be understood that in other embodiments, the transmitting channel amplifier 710 and the receiving channel amplifier 720 can also be other types of amplifiers, as long as those skilled in the art believe that it can be achieved.

[0041] In one embodiment, see Figure 4 The antenna array layer 510 includes a substrate 512 and an antenna array 514 disposed on the substrate 512, and the antenna array 514 is connected to the antenna switch device 400. Specifically, the substrate 512 is a carrier of the antenna array 514, which facilitates the arrangement of the antenna array 514 and can also provide a certain degree of protection for the antenna array 514. The spacing between the antenna array layers 510 is not unique, for example, it can be greater than or equal to 0.5λ, where λ is the wavelength of the center frequency of the antenna array 514. Setting a certain spacing between the antenna array layers 510 can reduce the mutual influence of the signals between the antenna array layers 510, thereby improving the working performance of the antenna device 500.

[0042] In one embodiment, the antenna array 514 is a dual-polarization planar array. The dual-polarization planar array includes a plurality of dual-polarization vibrators. Specifically, the arrangement of the dual-polarization vibrators is not unique. For example, they can be presented as a linear array along the X-axis direction and the Y-axis direction on the substrate 512. The setting of the dual-polarization planar array ensures sufficient isolation even if the vibrators in different polarization directions overlap, saving installation space and further reducing the size of the antenna device 500. It can be understood that in other embodiments, the dual-polarization vibrators can also be arranged on the substrate 512 in other arrangements, which can be determined according to specific needs. The antenna array layer 510 includes a substrate 512 and an antenna element arranged on the substrate 512. The antenna device 500 includes at least two stacked antenna array layers 510, so the antenna elements are arranged along the three directions of the X-axis, the Y-axis and the Z-axis to form a three-dimensional stereo array antenna structure, so that the antenna device 500 can form a vertical plane beam, thereby improving the overall gain of the antenna device 500. At the same time, the configuration of the three-dimensional structure can effectively improve the space utilization efficiency, enrich the configuration of the antenna device 500, and reduce costs.

[0043] In one embodiment, the substrate 512 is a metal substrate 512. The metal substrate 512 has high mechanical strength. Using the metal substrate 512 as a carrier of the antenna array 514 can improve the protection of the antenna array 514. The metal substrate 512 has the advantages of corrosion resistance, good heat dissipation, good processing performance, etc., with low processing difficulty and low manufacturing cost, and can effectively extend the service life of the antenna device 500. It can be understood that in other embodiments, the substrate 512 can also be a substrate 512 made of other materials, as long as those skilled in the art consider it feasible.

[0044] In one embodiment, the substrates 512 have the same size. Since each substrate 512 is stacked, using substrates 512 of the same size can reduce the difficulty of installation. Furthermore, the number of antenna arrays 514 arranged on each substrate 512 can also be equal, so that the workload of each antenna layer to achieve WIFI signal transmission and reception is basically balanced, and the complexity of signal processing can be reduced. It can be understood that in other embodiments, the size of each substrate 512 or the number of antenna arrays 514 arranged on each substrate 512 can also be different, which can be adjusted according to actual needs. Furthermore, the shape of the substrate 512 is not unique. For example, the substrate 512 can be rectangular, which is convenient for the antenna array 514 to be arranged in different ways, and it is also convenient to split or reorganize the substrate 512 during early installation or later processing, etc., to meet the different needs of different occasions, easy to use, and highly reliable.

[0045] In one embodiment, see Figure 4, each substrate 512 is connected by a connector 520. The connection of the substrate 512 by the connector 520 can play a good fixing role for each substrate 512. In addition, when the connector 520 and the substrate 512 are in a movable connection relationship, the connection of each substrate 512 by the connector 520 can facilitate the installation and disassembly of the substrate 512, and it is convenient to use. Specifically, the position of the connector 520 on the substrate 512 is not unique. For example, it can be set at the center of the substrate 512 to play a good fixing role, or it can be set at other positions of the substrate 512, which can be adjusted according to actual needs. It can be understood that in other embodiments, each substrate 512 can also be connected by other methods, such as bonding, etc., which is simple to operate and low in cost.

[0046] In one embodiment, the number of connectors 520 is more than two. The number of connectors 520 is not unique. For example, when the number of connectors 520 is two, the two connectors 520 can be respectively arranged at the two ends of a diagonal line of the substrate 512, which is conducive to the stability of the substrate 512. When the number of connectors 520 is three, the three connectors 520 can be arranged in a triangular shape to better fix the substrates 512. When the number of connectors 520 is four, the four connectors 520 can be respectively arranged at the four corners of the substrate 512 to ensure the firmness of the connection between the substrates 512. It can be understood that in other embodiments, the number of connectors 520 can also be 1, as long as the technicians in this field believe that the purpose of connecting the substrates 512 can be achieved. The material of the connector 520 is not unique. For example, a resin connector 520 can be used. The resin can be melted after being heated, which is convenient for plasticity and has a low cost. The use of a resin connector 520 can reduce the use cost of the multi-channel WIFI signal transceiver.

[0047] In order to better understand the above embodiment, two specific embodiments are explained in detail below. represents a dual polarized planar antenna array 514. In one embodiment, see Figure 5 , using a conventional WIFI AP (Access Point) (such as 2.4GHz), the frequency is moved to a lower frequency band (such as 700MHz) that is more suitable for large-scale coverage, and the signal is transmitted (received) through a three-dimensional antenna. In one embodiment, see Figure 6, using conventional WIFI AP (such as 2.4GHz), by moving the frequency to a low frequency band (such as 700MHz) that is more suitable for large-scale coverage, amplifying the signal at the same time, and then transmitting (receiving) it through a three-dimensional antenna. By forming a three-dimensional array of multi-layer antenna oscillators, the overall gain of the antenna is improved, and the good transmission characteristics of low-frequency signals are used to improve the coverage effect. The high gain characteristics of the three-dimensional array antenna are used to solve the current shortcoming of short WIFI transmission distance. By combining the advantages of three-dimensional antennas and low-frequency transmission, large-scale WIFI coverage can be achieved.

[0048] The above-mentioned multi-channel WIFI signal transceiver device, the wireless hotspot device is used to generate WIFI signals, and the generated WIFI signals are sent to the frequency shifting device after being filtered by the bandpass filtering device. The frequency shifting device can realize the frequency shifting of the signal, and move the high-frequency band signal to the low-frequency band. The moved signal is then transmitted through the antenna switch device and the antenna device. Since the low-frequency band signal has a longer wavelength and stronger penetration, the coverage of the WIFI signal can be increased by moving the WIFI signal to the low-frequency band and then transmitting it through the antenna device, and it is not blocked by obstacles such as buildings or trees, and is more suitable for bad weather. The antenna device includes more than two stacked antenna array layers, the number of antenna switch devices is more than two, and each antenna switch device is respectively connected to the corresponding antenna array layer, the number of frequency shifting devices, bandpass filtering devices and wireless hotspot devices is equal to the number of antenna switch devices, which are all more than two, and each frequency shifting device is respectively connected to the corresponding bandpass filtering device, and each bandpass filtering device is respectively connected to the corresponding wireless hotspot device, which can form a multi-input and multi-output signal transmission channel, and improve the reliability of the multi-channel WIFI signal transceiver.

[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A multi-channel WIFI signal transceiver, characterized in that: It includes a wireless hotspot device, a bandpass filtering device, a frequency shifting device, an antenna switch device and an antenna device, wherein the wireless hotspot device is connected to the bandpass filtering device, the bandpass filtering device is connected to the frequency shifting device, the frequency shifting device is connected to the antenna switch device, the antenna switch device is connected to the antenna device, the antenna device includes at least two stacked antenna array layers, and the antenna array layers are connected to the antenna switch device; the number of the antenna switch devices is more than two, and each of the antenna switch devices is respectively connected to a corresponding antenna array layer, and each of the antenna switch devices is connected to a corresponding antenna array layer to form a signal receiving and transmitting channel; the number of the frequency shifting devices, the bandpass filtering devices and the wireless hotspot devices is equal to the number of the antenna switch devices, and each of the frequency shifting devices is respectively connected to a corresponding bandpass filtering device, and each of the bandpass filtering devices is respectively connected to a corresponding wireless hotspot device.

2. The device according to claim 1, characterized in that It also includes a control device and a measuring device, the number of the measuring devices is equal to the number of the wireless hotspot devices, each of the measuring devices is connected to a corresponding wireless hotspot device, each of the measuring devices is connected to the control device, and the control device is connected to the wireless hotspot device; the measuring device is used to measure the connection signal of each of the wireless hotspot devices, obtain the measurement result and send it to the control device, and the control device controls the output power of each of the wireless hotspot devices according to the measurement result.

3. The device according to claim 2, characterized in that The measurement result includes a received signal strength indication value; the control device is used to control the output power of each of the wireless hotspot devices according to the received signal strength indication value and preset signal strength reference data.

4. The device according to claim 2, characterized in that The measurement result includes a channel quality indication value; the control device is used to control the output power of each of the wireless hotspot devices according to the channel quality indication value and preset channel quality reference data.

5. The device according to claim 2, characterized in that The measurement result includes an access load value; the control device is used to control the output power of each of the wireless hotspot devices according to the access load value and preset access load reference data.

6. The device according to claim 2, characterized in that The measurement result includes the number of access users; the control device is used to control the output power of each of the wireless hotspot devices according to the number of access users and preset reference data of the number of access users.

7. The device according to claim 1, characterized in that The bandpass filtering device includes a first bandpass filter and a second bandpass filter, and the frequency shifting device includes a transmitting channel frequency shifter and a receiving channel frequency shifter. The first bandpass filter is connected to the wireless hotspot device, the transmitting channel frequency shifter is connected to the first bandpass filter, the antenna switch device is connected to the transmitting channel frequency shifter, the second bandpass filter is connected to the wireless hotspot device, the receiving channel frequency shifter is connected to the second bandpass filter, and the antenna switch device is connected to the receiving channel frequency shifter.

8. The device according to claim 7, characterized in that It also includes a third band-pass filter, one end of which is connected to the transmission channel frequency shifter, and the other end of which is connected to the antenna switch device.

9. The device according to claim 8, characterized in that It also includes a transmitting channel amplifier and a receiving channel amplifier, one end of the transmitting channel amplifier is connected to the transmitting channel frequency shifter, and the other end is connected to the third bandpass filter, and one end of the receiving channel amplifier is connected to the receiving channel frequency shifter, and the other end is connected to the antenna switch device.

10. The device according to claim 1, characterized in that The antenna array layer includes a substrate and an antenna array arranged on the substrate, and the antenna array is connected to the antenna switch device.

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