Multi-channel enhanced WIFI signal transceiver

Abstract

The present application relates to a multi-channel enhanced WIFI signal transceiver. The device includes a high-gain antenna device and two or more wireless hotspot devices, a bandpass filtering device, a frequency shifting device and an antenna switch device, which are connected in sequence and are equal in number. The high-gain antenna device includes a substrate and two or more dual-polarized logarithmic periodic antennas arranged on the substrate. The dual-polarized logarithmic periodic antenna adopts a cross-cross structure to realize the dual-polarization structure of two single-polarized antenna units, which can reduce the signal polarization loss. The F-B covering layer can form an F-B resonant cavity with the plane where the second end of the antenna body is located, thereby improving the radiation gain of the antenna. The high-gain antenna device is designed as a three-dimensional array structure, which can form a vertical plane beam, thereby improving the overall gain of the antenna. The WIFI signal can be moved to a low frequency band and then transmitted to increase the coverage of the WIFI signal. The multi-channel enhanced WIFI signal transceiver includes a multi-input and multi-output signal transmission channel, and has high reliability in use.

Description

Technical Field

[0001] The present application relates to the field of wireless technology, and in particular to a multi-channel enhanced 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 enhanced WIFI signal transceiver to address the problem of low reliability of traditional WIFI signal transmission devices.

[0005] A multi-channel enhanced WIFI signal transceiver, comprising a wireless hotspot device, a bandpass filtering device, a frequency shifting device, an antenna switch device and a high-gain antenna device, wherein the high-gain antenna device comprises a substrate and two or more dual-polarized logarithmic periodic antennas, each of which is arranged on the substrate; the number of the wireless hotspot device, the bandpass filtering device, the frequency shifting device and the antenna switch device is the same and is two or more, each of which is respectively connected to a corresponding wireless hotspot device and a frequency shifting device, and each of which is respectively connected to a corresponding frequency shifting device and a dual-polarized logarithmic periodic antenna; the dual-polarized logarithmic periodic antenna comprises:

[0006] The antenna body comprises four identical set lines arranged in sequence around a space axis, namely, a first set line, a second set line, a third set line, and a fourth set line, wherein the first set line is arranged opposite to the third set line, and the second set line is arranged opposite to the fourth set line, and the line between the midpoint of the first set line and the midpoint of the third set line is perpendicular to the line between the midpoint of the second set line and the midpoint of the fourth set line, and the foot of the perpendicular is perpendicular to the space axis, and the first set line, the second set line, the third set line, and the fourth set line all comprise a first end and a second end; a plurality of antenna elements are arranged on the first set line, and the antenna elements are alternately arranged at equal intervals on both sides of the first set line relative to the direction of the space axis from the first end to the second end of the first set line, and the closer the antenna element is to the second end of the first set line, the shorter the length is, and all antenna elements on the first set line are parallel to each other and are in the same plane; a plurality of antenna elements are also arranged on the second set line, the third set line, and the fourth set line, respectively, and the arrangement method is the same as that of the antenna element of the first set line;

[0007] An FB covering layer, wherein the FB covering layer is arranged at the first end of the antenna body, and a plane where the FB covering layer is located is perpendicular to the spatial axis;

[0008] The first coaxial line and the second coaxial line are respectively arranged on the first collective line and the second collective line, and include a coaxially arranged inner conductor, an insulating medium layer, and an outer conductor layer, wherein the insulating medium layer is arranged between the inner conductor and the outer conductor layer, and the outer conductor layers of the first coaxial line and the second coaxial line are respectively attached to the side of the first collective line and the second collective line away from the spatial axis;

[0009] The second ends of the first and second collective wires are further provided with a first through hole and a second through hole, respectively. The shapes and sizes of the first and second through holes are respectively adapted to the first coaxial line and the second coaxial line. The output ends of the first and second coaxial lines are respectively connected to the first and second through holes, and the inner conductors of the first and second coaxial lines pass through the first and second through holes, respectively, and are connected to the third and fourth collective wires.

[0010] The multi-channel enhanced WIFI signal transceiver device described above, the high-gain antenna device uses dual-polarized logarithmic periodic antennas to form an antenna array. The dual-polarized logarithmic periodic antenna uses a cross-cross structure to realize the dual-polarized structure of two single-polarized antenna units, which can reduce signal polarization loss and make the antenna gain excellent in both horizontal and vertical directions. An FB covering layer is set at the first end of the antenna body. The FB covering layer can form an FB resonant cavity with the plane where the second end of the antenna body is located. The electromagnetic waves radiated by the antenna body are superimposed in phase in the resonant cavity, thereby improving the radiation gain of the enhanced dual-polarized logarithmic periodic antenna. At the same time, the collective line of each antenna and the antenna elements arranged thereon can be disassembled and assembled in blocks, with a simple structure and easy to manufacture and install. The dual-polarized logarithmic periodic antenna is used to form an antenna array, and the high-gain antenna device is designed as a three-dimensional array structure, so that the high-gain antenna device can form a vertical plane beam, thereby improving the overall gain of the antenna. In addition, since the low-frequency 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 high-gain antenna device, and it is not blocked by obstacles such as buildings or trees, and is more suitable for bad weather. Each antenna switch device is respectively connected to a corresponding dual-polarization logarithmic periodic antenna, each frequency shifting device is respectively connected to a corresponding bandpass filtering device, and each bandpass filtering device is respectively connected to a corresponding wireless hotspot device, which can form and improve the reliability of the multi-channel enhanced WIFI signal transceiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural block diagram of a multi-channel enhanced WIFI signal transceiver in one embodiment;

[0012] Figure 2 is a structural diagram of a high-gain antenna device in one embodiment;

[0013] Figure 3 A schematic diagram of the distribution of dual-polarized log-periodic antennas in one embodiment;

[0014] Figure 4 A schematic diagram of the distribution of dual-polarized log-periodic antennas in another embodiment;

[0015] Figure 5 A schematic diagram of the structure of a dual-polarized log-periodic antenna in an embodiment;

[0016] Figure 6 It is a partial schematic diagram of a coaxial line wire structure in one embodiment;

[0017] Figure 7 A cross-sectional view of a local direction of a dual-polarized log-periodic antenna in an embodiment;

[0018] Figure 8 A top view of a dual-polarized log-periodic antenna in one embodiment;

[0019] Fig. 9 A schematic diagram of the single-polarization structure of an antenna in an embodiment;

[0020] Fig.10 A schematic diagram of the structure of a dual-polarized log-periodic antenna in another embodiment;

[0021] Fig.11 It is a structural block diagram of a multi-channel enhanced WIFI signal transceiver in another embodiment;

[0022] Fig.12 This is a structural principle diagram of a multi-channel enhanced WIFI signal transceiver in one embodiment;

[0023] Fig.13 2 is a structural principle diagram of a multi-channel enhanced WIFI signal transceiver in another embodiment. DETAILED DESCRIPTION

[0024] 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.

[0025] In one embodiment, see Figure 1 and Figure 2 , a multi-channel enhanced WIFI signal transceiver is provided, comprising a wireless hotspot device 5, a bandpass filter device 4, a frequency shifting device 3, an antenna switch device 2 and a high-gain antenna device 1, wherein the high-gain antenna device 1 comprises a substrate 10 and two or more dual-polarized logarithmic periodic antennas 11, each of which is arranged on the substrate 10, and the number of wireless hotspot devices 5, bandpass filter devices 4, frequency shifting devices 3 and antenna switch devices 2 is the same and is two or more, each bandpass filter device 4 is respectively connected to the corresponding wireless hotspot device 5 and frequency shifting device 3, and each antenna switch device 2 is respectively connected to the corresponding frequency shifting device 3 and dual-polarized logarithmic periodic antenna 11. The wireless hotspot device 5 is used to generate a WIFI signal, and the generated WIFI signal is filtered by the bandpass filter device 4 and then sent to the frequency shifting device 3, and the frequency shifting device 3 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 2 and the high-gain antenna device 1. Since low-frequency signals have longer wavelengths and stronger penetration, moving the WIFI signal to the low-frequency band and then transmitting it through the high-gain antenna device 1 can increase the coverage of the WIFI signal, and it is not blocked by obstacles such as buildings or trees, is more adaptable to severe weather, and has high reliability.

[0026] Specifically, the wireless hotspot device 5 mainly provides access from the multi-channel enhanced WIFI signal transceiver device to the wired local area network and from the wired local area network to the multi-channel enhanced WIFI signal transceiver device, and the wireless workstations within the coverage of the wireless hotspot device 5 access point can communicate with each other through it. When transmitting WIFI signals, the wireless hotspot device 5 accesses the network for processing and then sends them to the bandpass filter device 4 in the form of WIFI signals. The bandpass filter device 4 sends them to the frequency shifting device 3 after filtering. The frequency shifting device 3 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 2 and the high gain antenna device 1. When receiving WIFI signals, the high-gain antenna device 1 can sense the electromagnetic signals in the space and then send them to the antenna switch device 2. The antenna switch device 2 transmits the signals to the frequency shifting device 3. The frequency shifting device 3 can realize the frequency shifting of the signals, shifting the low-frequency band signals to the high-frequency band. The shifted signals are then transmitted to the bandpass filter device 4 for filtering. The filtered signals are sent to the wireless hotspot device 5, so that the user can access the multi-channel enhanced WIFI signal transceiver device from the wired local area network through the wireless hotspot device 5.

[0027] The bandpass filter device 4 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, bandpass filter devices 4 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.

[0028] The frequency shifting device 3 uses analog mixer technology to shift the high-frequency band signal to the low-frequency band or the low-frequency band signal to the high-frequency band. The structure of the frequency shifting device 3 is not unique. For example, an analog multiplier frequency converter or a crystal triode mixer can be used. It can be understood that the frequency shifting device 3 can also adopt other structures as long as the technicians in this field think it can be realized. The antenna switch device 2 can control the signal on and off between the dual-polarized logarithmic periodic antenna 11 and the frequency shifting device 3. When the dual-polarized logarithmic periodic antenna 11 needs to work, the antenna switch device 2 is turned on, and the dual-polarized logarithmic periodic antenna 11 and the frequency shifting device 3 can transmit signals normally. When the antenna switch device 2 is disconnected, the dual-polarized logarithmic periodic antenna 11 is in standby mode. The dual-polarized logarithmic periodic antenna 11 is a carrier for receiving and sending signals. The dual-polarized logarithmic periodic antenna 11 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.

[0029] The high-gain antenna device 1 includes a substrate 10 and two or more dual-polarized log-periodic antennas 11, and each dual-polarized log-periodic antenna 11 is disposed on the substrate 10. The material of the substrate 10 is not unique, and can be a metal plate or a plastic plate, etc. In this embodiment, the substrate 10 is a metal substrate to improve the reliability of antenna fixing. The frequency bands of different dual-polarized log-periodic antennas 10 can be the same or different. In this embodiment, the dual-polarized log-periodic antennas 10 of different frequency bands are cross-arranged on the substrate 10. Figure 3 As shown, the dual-polarized logarithmic periodic antenna 10 includes a band 1 antenna and a band 2 antenna, and the antennas of the two different frequency bands are cross-arranged. The specific structural dimensions of the dual-polarized logarithmic periodic antennas 10 of different frequency bands are also different, such as Figure 4 The figure shows a cross-type high-gain array diagram between dual-polarized log-periodic antennas 10 of different frequency bands, where the antenna of frequency band 1 is a low-frequency antenna with a higher height, and the antenna of frequency band 2 is a high-frequency antenna with a lower height. The dual-polarized log-periodic antennas of different frequency bands are placed crosswise, that is, the distance between the two dual-polarized log-periodic antenna units is increased, which indirectly increases the effective aperture area and improves the antenna gain.

[0030] like Figure 5 As shown, the dual-polarized logarithmic periodic antenna 10 includes an antenna body 110, an antenna element 120, a first coaxial line 130, a second coaxial line 140 and an FB covering layer 190. The antenna body 110 includes four identical collective lines, namely a first collective line 111, a second collective line 112, a third collective line 113 and a fourth collective line 114. The four collective lines are arranged in sequence around a spatial axis, wherein the first collective line 111 is arranged opposite to the third collective line 113, and the second collective line 112 is arranged opposite to the fourth collective line 114. At the same time, the line connecting the midpoint of the first collective line 111 and the midpoint of the third collective line 113 is perpendicular to the line connecting the midpoint of the second collective line 112 and the midpoint of the fourth collective line 114, and the foot is perpendicular to the spatial axis, that is, the four collective lines are not uneven, but are arranged to keep the length aligned, so that the antenna can keep the structure relatively symmetrical and stable as much as possible.

[0031] A plurality of antenna elements 120 are respectively arranged on the first collection line 111, the second collection line 112, the third collection line 113, and the fourth collection line 114. The antenna element 120 can be a metal strip or a metal rod, as well as metal parts of other shapes. For the convenience of description, the two ends of each collection line may be referred to as the top and the bottom, respectively. The plurality of antenna elements 120 on any collection line are alternately arranged at equal intervals in sequence from the bottom to the top of the collection line on both sides of the collection line relative to the spatial axis, that is, they are alternately arranged at equal intervals from the bottom to the top, one left and one right, and the closer to the top, the shorter the antenna element. At the same time, the plurality of antenna elements 120 on the same collection line are parallel to each other and are in the same plane.

[0032] The FB cover layer 190 is disposed at the first end of the antenna body 110 , and the plane where the FB cover layer 190 is located is perpendicular to the spatial axis. Specifically, the first end of the antenna body 110 is an end close to the second ends of the first, second, third and fourth wire collections 111 , 112 , 113 and 114 . When the second ends of the first set of wires 111, the second set of wires 112, the third set of wires 113 and the fourth set of wires 114 are on the same plane, any one of the second ends of the first set of wires 111, the second set of wires 112, the third set of wires 113 and the fourth set of wires 114 can be used as the first end of the antenna body 110. When the second ends of the first set of wires 111, the second set of wires 112, the third set of wires 113 and the fourth set of wires 114 are not on the same plane, the highest end among the second ends of the first set of wires 111, the second set of wires 112, the third set of wires 113 and the fourth set of wires 114 can be used as the first end of the antenna body 110. The FB covering layer 190 can be directly set on the first end of the antenna body 110, and can also be set on the first end of the antenna body 110 through a connecting member. The distance between the FB covering layer 190 and the first end of the antenna body 110 can be adjusted according to actual needs.

[0033] The FB covering layer 190 is not set in a unique manner. For example, it can be fixedly set at the first end of the antenna body 110 at the factory or during installation to keep the position fixed, so that the FB covering layer 190 and the antenna body 110 are structurally integrated, which can avoid interference factors during installation and improve working performance. It can also be set at the first end of the antenna body 110 through a connector. The type of connector is not unique, and it can be a foam connector or a connecting column, etc. Further, it can also be detachably fixed to the first end of the antenna body 110 through a connector. The FB covering layer 190 can be installed when needed without being removed, which is convenient to use. When the FB covering layer 190 is damaged and cannot be used, only the FB covering layer 190 can be replaced, which avoids the overall replacement of the enhanced dual-polarization log-periodic antenna and saves maintenance costs.

[0034] The FB covering layer 190 is parallel to the plane where the second end of the antenna body 110 is located. Taking the antenna body 110 being set on the ground as an example, the FB covering layer 190 is the reflection surface 1, and the antenna floor is the reflection surface 2. The two planes constitute the FB resonant cavity (Fabry-Perot resonant cavity). The antenna body 110 is in the resonant cavity, and the electromagnetic waves radiated by the antenna vibrator 120 in the antenna body 110 are superimposed in phase in the resonant cavity, thereby improving the radiation gain of the enhanced dual-polarization logarithmic periodic antenna. The type of FB covering layer 190 is not unique. For example, the FB covering layer 190 can adopt a gradient dielectric constant covering layer. Using different dielectric constants at different positions of the covering layer can make the phase distribution curve more uniform and improve the quality of the electromagnetic waves radiated by the enhanced dual-polarization logarithmic periodic antenna. The size of the FB covering layer 190 is also not unique. In this embodiment, the thickness of the FB covering layer 190 matches one-fourth of the wavelength of the electromagnetic wave radiated by the antenna vibrator when propagating in the medium of the FB covering layer 190, and the effect of improving the gain is good. It can be understood that in other embodiments, the specific size of the FB covering layer 190 can be adjusted according to actual needs.

[0035] The first coaxial line 130 and the second coaxial line 140 are respectively disposed on the first set of lines 111 and the second set of lines 112. Figure 6 As shown, the first coaxial line 130 and the second coaxial line 140 both include a coaxially arranged inner conductor 131, an insulating medium layer 132 and an outer conductor layer 133, and the insulating medium layer 132 is arranged between the inner conductor 131 and the outer conductor layer 133 to ensure that they do not contact each other. When arranged, the outer conductor layers 133 of the first coaxial line 130 and the second coaxial line 140 are respectively attached to the outer sides of the first collective line 111 and the second collective line 112 away from the spatial axis to generate a potential difference.

[0036] See also Figure 7 The tops of the first collective line 111 and the second collective line 112 are respectively provided with a first through hole 150 and a second through hole 160. The shapes and sizes of the first through hole 150 and the second through hole 160 can be adapted to the first coaxial line 130 and the second coaxial line 140, and can also be larger or smaller than the cross-section of the coaxial line. The coaxial line arranged on the collective line can connect the output end to the through hole on the collective line where it is located. Furthermore, the inner conductor of the collective line connected to the through hole can continue to extend and pass through the through hole to be connected to the collective line opposite to the collective line where the coaxial line is located, so as to form a feeding structure. For example, the output end of the second coaxial line 140 arranged on the second collective line 112 is connected to the second through hole 160, and at the same time, the inner conductor of the output end of the second coaxial line 140 further extends through the second through hole 160 to be connected to the fourth coaxial line 114. The arrangement of the first collective line 111 and the first coaxial line 130 is the same, which will not be repeated here.

[0037] The number of FB covering layers 190 is more than two, and each FB covering layer 190 is stacked and arranged at the first end of the antenna body 110. Taking the first end of the antenna body 110 as the top of the antenna body 110, the second end of the antenna body 110 as the bottom of the antenna body 110, and the bottom of the antenna body 110 as the near-ground end as an example, stacking multiple FB covering layers 190 on the top of the antenna body 110 can make the number of electromagnetic waves radiated by the antenna vibrator 120 more when propagating in the cavity formed by the plane where the multiple FB covering layers 190 and the second end of the antenna body 110 are located, thereby further improving the radiation gain of the enhanced dual-polarization log-periodic antenna.

[0038] In one embodiment, the FB cover layer 190 includes a bottom plate and a patch, and the patch is arranged on a side of the bottom plate close to the antenna body 110. The bottom plate is a carrier for the patch, which can fix the position of the patch and ensure the normal operation of the patch. The patch is arranged on the bottom plate and forms a resonant cavity with the plane where the second end of the antenna body 110 is located. The number of patches is not unique. Generally speaking, the more patches there are, the smaller the size of the patches is. The specific selection can be made according to actual needs. When the number of FB cover layers 190 is more than two, each FB cover layer 190 is stacked, and the patches on each FB cover layer 190 are respectively arranged on the side of each bottom plate close to the antenna body 110. The setting direction of each FB cover layer 190 is the same, which is conducive to further improving the gain.

[0039] In one embodiment, the patch is a rectangular patch or a circular patch. The rectangular patch or the circular patch can be regularly arranged on the bottom plate, and the position and working parameters of the patch can be adjusted more conveniently, thereby improving the convenience of use of the enhanced dual-polarization log-periodic antenna.

[0040] In one embodiment, a cross-shaped slot is provided on one side of the patch close to the antenna body. The cross-shaped slot acts as a meander, which increases the equivalent inductance and significantly reduces the resonant frequency, thereby reducing the size of the FB cover layer 190 while ensuring the working performance. The stronger radiation generated by the cross-shaped slot is equivalent to increasing the loss resistance, thereby greatly improving the bandwidth.

[0041] In one embodiment, the dual-polarized log-periodic antenna 10 further includes a connector, and the FB cover layer 190 is fixedly disposed at the first end of the antenna body 110 through the connector. Specifically, the type of the connector is not unique, and it can be a foam connector or a connecting column, etc. Further, the FB cover layer 190 can also be detachably fixed to the first end of the antenna body 110 through the connector, and the FB cover layer 190 can be installed when needed without being removed, which is convenient to use, and when the FB cover layer 190 is damaged and cannot be used, only the FB cover layer 190 can be replaced, avoiding the overall replacement of the dual-polarized log-periodic antenna 10, saving maintenance costs.

[0042] In one embodiment, the dual-polarized log-periodic antenna 10 further includes a dielectric strip, which is disposed in an area formed by the first set of lines 111, the second set of lines 112, the third set of lines 113, and the fourth set of lines 114. The size of the dielectric strip is not unique. In this embodiment, the cross-sectional area of ​​the dielectric strip is equal to the cross-sectional area of ​​the area formed by the first set of lines 111, the second set of lines 112, the third set of lines 113, and the fourth set of lines 114, so that the dielectric strip is fixed well and the working stability is improved. The length of the dielectric strip can be equal to the distance between the antenna vibrators 120 at both ends of the same set of lines, and the material will not be wasted while ensuring the working effect. The dual-polarized log-periodic antenna 10 uses a quasi-periodic model, the vibrators are not crossed, the array elements are each pair of vibrators, and the four pairs of vibrators are dual-polarized. The length of each layer of vibrators is different, so as to achieve a wider bandwidth, and the array element spacing is also different. The Hansen-Woodyard end-fire condition is achieved by adding a dielectric strip in the middle of the feed assembly plate. The dielectric constants of the dielectric strips between each layer of oscillators are different, forming a strong end-fire array, thereby achieving the purpose of improving the gain of the antenna itself.

[0043] In one embodiment, see Fig.10 The dual-polarized log-periodic antenna 10 further includes more than two balanced-unbalanced transformers 101, each of which is connected to a different set of lines among the first set of lines 111, the second set of lines 112, the third set of lines 113, and the fourth set of lines 114. Fig.10Although the specific connection method between the antenna body 110 and the FB covering layer 190 is not shown, in fact, the antenna body 110 and the FB covering layer 190 can be connected by a connector. Specifically, in this embodiment, taking the dual-polarized log-periodic antenna 10 including a first balanced-unbalanced transformer and a second balanced-unbalanced transformer as an example, the port of the first balanced-unbalanced transformer is connected to the first collective line 111, and the port of the second balanced-unbalanced transformer is connected to the second collective line 112. Furthermore, the port of the balanced-unbalanced transformer connected to the collective line can be further extended to connect to the collective line opposite to the connected collective line to form a feeding structure. The connection relationship between other balanced-unbalanced transformers and collective lines can be deduced in turn, and will not be repeated here. Using more than two balanced-unbalanced transformers to form a feeding structure can achieve balanced feeding of the antenna element and improve the working performance of the dual-polarized log-periodic antenna 10.

[0044] In one embodiment, the shape of each set of wires constituting the antenna body 110 is a rectangular parallelepiped to facilitate the installation of components such as the antenna element and the coaxial line.

[0045] like Figure 5 and Figure 8 As shown, in one embodiment, the dual-polarized log-periodic antenna 10 further includes a third coaxial line 170 and a fourth coaxial line 180, which are respectively arranged on the third set line 113 and the fourth set line 114, and the third coaxial line 170 is symmetrical with the first coaxial line 130 about the aforementioned spatial axis, and the fourth coaxial line 180 is symmetrical with the second coaxial line 140 about the aforementioned spatial axis. In one embodiment, the third coaxial line 170 can also be equal in length to the first coaxial line 130, and the fourth coaxial line 180 can be equal in length to the second coaxial line 140. In another embodiment, the third coaxial line 170 is the same as the first coaxial line 130, and the fourth coaxial line 180 is the same as the second coaxial line 140. By providing a coaxial line symmetrical to the first coaxial line 130 and the second coaxial line 140, the structural symmetry of the dual-polarized log-periodic antenna 10 can be ensured, thereby ensuring the symmetry of the antenna radiation characteristics and improving the antenna performance.

[0046] like Fig. 9As shown, in one embodiment, the input impedance of the first antenna single-polarization structure composed of the first set line 111, the third set line 113, the first coaxial line 130, the third coaxial line 170, and the antenna vibrator arranged on the first set line 111 and the third set line 113 is 50 ohms. In addition, the input impedance of the second antenna single-polarization structure composed of the second set line 112, the fourth set line 114, the second coaxial line 140, the fourth coaxial line 180, and the antenna vibrator arranged on the second set line 112 and the fourth set line 114 is also 50 ohms. The dual-polarization log-periodic antenna 10 does not require an impedance transformer and can be directly fed by a 50-ohm coaxial line, which is convenient, stable, and has strong adaptability. Coaxial feeding is used for top feeding, and the coaxial feeding is closely connected to the set line. At the same time, coaxial feeding can also be performed at the bottom of the set line. Furthermore, in one embodiment, the first coaxial line 130 , the second coaxial line 140 , the third coaxial line 170 , and the fourth coaxial line 180 are all 50-ohm coaxial lines.

[0047] In one embodiment, the first through hole 150 is located closer to the top than the second through hole 160 so that the inner conductors of the first coaxial line 130 and the second coaxial line 140 do not overlap when connected to the third and fourth collective lines 113 and 114 respectively, thereby avoiding interference.

[0048] In one embodiment, see Fig.10 The high-gain antenna device may further include a reflector 102 disposed at the second end of the antenna body 110. Specifically, the second end of the antenna body 110 may be the near-ground end of the antenna body 110, i.e., the bottom end. By providing the reflector 102, the antenna backward beam may be converged and reflected through the reflector 102, thereby effectively improving the front-to-back ratio of the antenna, and also having a certain effect on improving the antenna gain and directivity, thereby improving the antenna performance.

[0049] In one embodiment, see Fig.11 The bandpass filtering device 4 includes a first bandpass filter 41 and a second bandpass filter 42, the frequency shifting device 3 includes a transmitting channel frequency shifter 31 and a receiving channel frequency shifter 32, the first bandpass filter 41 is connected to the wireless hotspot device 5, the transmitting channel frequency shifter 31 is connected to the first bandpass filter 41, the antenna switch device 2 is connected to the transmitting channel frequency shifter 31, the second bandpass filter 42 is connected to the wireless hotspot device 5, the receiving channel frequency shifter 32 is connected to the second bandpass filter 42, and the antenna switch device 2 is connected to the receiving channel frequency shifter 32.

[0050] Specifically, the transmission and reception of WIFI signals in the multi-channel enhanced WIFI signal transceiver are transmitted through the signal transmission channel and the signal receiving channel respectively. The signal transmission channel includes a first bandpass filter 41 and a transmission channel frequency shifter 31, and the signal receiving channel includes a second bandpass filter 42 and a receiving channel frequency shifter 32. When transmitting a signal, the wireless hotspot device 5 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 41, 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 2. The high-gain antenna device 1 receives the signal transmitted by the antenna switch device 2 and radiates it into space, completing the transmission of the WIFI signal. Since the signal transmitted by the high-gain antenna device 1 is a low-frequency signal, it has strong penetration ability and a large signal coverage range. When receiving a signal, the high-gain antenna device 1 receives the electromagnetic signal in space and sends it to the second bandpass filter 42 via the antenna switch device 2. The second bandpass filter 42 filters out the noise in the signal and then sends it to the wireless hotspot device 5. The wireless hotspot device 5 processes the signal and completes the reception of the WIFI signal.

[0051] In this embodiment, taking the example that the number of dual-polarized logarithmic periodic antennas 11 connected to each antenna switch device 2 increases in sequence, the number of antenna switch devices 2 is N, the first antenna switch device 2 is connected to two dual-polarized logarithmic periodic antennas 11, the second antenna switch device 2 is connected to three dual-polarized logarithmic periodic antennas 11, and so on, the Nth antenna switch device 2 is connected to N+1 dual-polarized logarithmic periodic antennas 11. Taking the first antenna switch device 2 as an example, two dual-polarized logarithmic periodic antennas 11 are connected to the antenna switch device 2, and the antenna switch device 2 is sequentially connected to the transmission channel frequency shifter 31, the first bandpass filter 41 and the wireless hotspot device 5, and the antenna switch device 2 is also sequentially connected to the receiving channel frequency shifter 32, the second bandpass filter 42 and the wireless hotspot device 5 to form a signal transmission channel and a signal receiving channel, respectively. By independently configuring each antenna switch device 2 with a set of frequency shifting devices 3 and bandpass filtering devices 4, 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 enhanced WIFI signal transceiver. Since the number of dual-polarized log-periodic antennas 11 connected to each antenna switch device 2 is different, the gain effect of each antenna switch device 2 is also different. Specifically, the more the number of dual-polarized log-periodic antennas 11, the higher the gain. In actual use, the corresponding number of dual-polarized log-periodic antennas 11 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 enhanced WIFI signal transceiver.

[0052] The types of the first bandpass filter 41, the second bandpass filter 42, the transmission channel frequency shifter 31 and the receiving channel frequency shifter 32 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 41 and the second bandpass filter 42 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 31 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 2 by the high-gain antenna device 1, which is beneficial to improve the coverage of the signal. The receiving channel frequency shifter 32 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 42. The second bandpass filter 42 filters out signals of other frequencies and only retains the signal of 2.4GHz, which is then sent to the wireless hotspot device 5 for network conversion and sharing, which is beneficial 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.

[0053] The working state switching of receiving or transmitting WIFI signals can also be realized by the antenna switch device 2, which includes a signal receiving circuit, a signal transmitting circuit and a switching switch. The switching switch is connected to the high-gain antenna device 1, and is connected to the receiving channel frequency shifter 32 through the signal receiving circuit, and is connected to the transmitting channel frequency shifter 31 through the signal transmitting circuit. When the switching switch is connected to the signal transmitting circuit, the antenna switch device 2 controls the high-gain antenna device 1 to be in the transmitting state. When the switching switch is connected to the signal receiving circuit, the antenna switch device 2 controls the high-gain antenna device 1 to be in the receiving state. When the switching switch is in the open circuit state, the high-gain antenna device 1 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 high-gain antenna device 1 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.

[0054] In one embodiment, see Fig.11 The multi-channel enhanced WIFI signal transceiver device also includes a third bandpass filter 61, one end of the third bandpass filter 61 is connected to the transmission channel frequency shifter 31, and the other end is connected to the antenna switch device 2. The type of the third bandpass filter 61 is not unique. Taking the high-frequency signal frequency of 2.4GHz and the low-frequency signal frequency of 700MHz as an example, the transmission channel frequency shifter 31 is a 2.4GHz to 700MHz frequency shifter, which can convert the high-frequency signal with a frequency of 2.4GHz into a low-frequency signal of 700MHz and then send it to the third bandpass filter 61. The third bandpass filter 61 is a 700MHz bandpass filter, which can ensure that the signal sent to the antenna switch device 2 only includes a low-frequency signal with a frequency of 700MHz, thereby improving the purity of the signal. It can be understood that in other embodiments, the third bandpass filter 61 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 31 connected to the bandpass filter to ensure the frequency requirement of the signal.

[0055] In one embodiment, see Fig.11 The multi-channel enhanced WIFI signal transceiver device also includes a transmitting channel amplifier 71 and a receiving channel amplifier 72. One end of the transmitting channel amplifier 71 is connected to the transmitting channel frequency shifter 31, and the other end is connected to the third bandpass filter 61. One end of the receiving channel amplifier 72 is connected to the receiving channel frequency shifter 32, and the other end is connected to the antenna switch device 2. The transmitting channel amplifier 71 and the receiving channel amplifier 72 can amplify the signal to improve the reliability of signal transmission.

[0056] Specifically, the types of the transmitting channel amplifier 71 and the receiving channel amplifier 72 are not unique. For example, in this embodiment, the transmitting channel amplifier 71 is a power amplifier, and the receiving channel amplifier 72 is a low noise amplifier. When sending a WIFI signal, the wireless hotspot device 5 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 high-gain antenna device 1 through the antenna switch device 2, thereby realizing the sending of the WIFI signal. When receiving a WIFI signal, the high-gain antenna device 1 can sense the electromagnetic signal in the space and then send it to the antenna switch device 2. The antenna switch device 2 transmits the signal to the low-noise amplifier for amplification. The amplified signal is sent to the wireless hotspot device 5 via the bandpass filter device 4 for demodulation to obtain a WIFI signal, thereby realizing the reception of the WIFI signal. It can be understood that in other embodiments, the transmitting channel amplifier 71 and the receiving channel amplifier 72 can also be other types of amplifiers, as long as those skilled in the art believe that it can be achieved.

[0057] In order to better understand the above embodiment, two specific embodiments are explained in detail below. represents a dual-polarized log-periodic antenna 11. In one embodiment, see Fig.12 , using a conventional WIFI AP (Access Point) (such as 2.4 GHz), the frequency is moved to a lower frequency band (such as 700 MHz) that is more suitable for large-scale coverage, and the signal is transmitted (received) through the dual-polarized logarithmic periodic antenna 11. In one embodiment, see Fig.13 , using a conventional WIFI AP (such as 2.4GHz), the frequency is moved to a low frequency band (such as 700MHz) that is more suitable for large-scale coverage, and the signal is amplified at the same time, and then transmitted (received) through the dual-polarized logarithmic periodic antenna 11. The dual-polarized logarithmic periodic antenna 11 is used to improve the overall gain of the antenna, and the good transmission characteristics of low-frequency signals are used to improve the coverage effect. The high gain characteristics of the dual-polarized logarithmic periodic antenna are used to solve the current disadvantage of short WIFI transmission distance. The advantages of the dual-polarized logarithmic periodic antenna and low-frequency band transmission are combined to achieve large-scale WIFI coverage.

[0058] The multi-channel enhanced WIFI signal transceiver device, the high-gain antenna device uses a dual-polarized logarithmic periodic antenna to form an antenna array. The dual-polarized logarithmic periodic antenna uses a cross-cross structure to realize the dual-polarized structure of two single-polarized antenna units, which can reduce the signal polarization loss and make the antenna gain excellent in both horizontal and vertical directions. The antenna vibrator can induce the same-phase current on the reflector to improve the gain. At the same time, the collective line of each antenna and the antenna element arranged thereon can be disassembled and assembled in blocks, with a simple structure and easy to manufacture and install. The antenna array is composed of dual-polarized logarithmic periodic antennas, and the high-gain antenna device is designed as a three-dimensional array structure, so that the high-gain antenna device can form a vertical plane beam, thereby improving the overall gain of the antenna. In addition, since the low-frequency 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 high-gain antenna device, and it is not blocked by obstacles such as buildings or trees, and is more suitable for bad weather. Each antenna switch device is respectively connected to a corresponding dual-polarization log-periodic antenna, each frequency shifting device is respectively connected to a corresponding bandpass filtering device, and each bandpass filtering device is respectively connected to a corresponding wireless hotspot device, thereby forming a multi-input and multi-output signal transmission channel and improving the reliability of the multi-channel enhanced WIFI signal transceiver.

[0059] 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.

[0060] 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 enhanced 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 a high-gain antenna device, wherein the high-gain antenna device includes a substrate and two or more dual-polarized log-periodic antennas, and each of the dual-polarized log-periodic antennas is arranged on the substrate; the number of the wireless hotspot device, the bandpass filtering device, the frequency shifting device and the antenna switch device is the same and is two or more, each of the bandpass filtering devices is respectively connected to the corresponding wireless hotspot device and the frequency shifting device, and each of the antenna switch devices is respectively connected to the corresponding frequency shifting device and the dual-polarized log-periodic antenna; The dual-polarized log-periodic antenna comprises: The antenna body comprises four identical set lines arranged in sequence around a space axis, namely, a first set line, a second set line, a third set line, and a fourth set line, wherein the first set line is arranged opposite to the third set line, and the second set line is arranged opposite to the fourth set line, and the line between the midpoint of the first set line and the midpoint of the third set line is perpendicular to the line between the midpoint of the second set line and the midpoint of the fourth set line, and the foot of the perpendicular is perpendicular to the space axis, and the first set line, the second set line, the third set line, and the fourth set line all comprise a first end and a second end; a plurality of antenna elements are arranged on the first set line, and the antenna elements are alternately arranged at equal intervals on both sides of the first set line relative to the direction of the space axis from the first end to the second end of the first set line, and the closer the antenna element is to the second end of the first set line, the shorter the length is, and all antenna elements on the first set line are parallel to each other and are in the same plane; a plurality of antenna elements are also arranged on the second set line, the third set line, and the fourth set line, respectively, and the arrangement method is the same as that of the antenna element of the first set line; An FB covering layer, wherein the FB covering layer is arranged at the first end of the antenna body, the plane where the FB covering layer is located is perpendicular to the spatial axis, the FB covering layer is parallel to the plane where the second end of the antenna body is located, and the FB covering layer adopts a gradient dielectric constant covering layer; The number of the FB covering layers is more than two, and each of the FB covering layers is stacked and arranged at the first end of the antenna body; the FB covering layer includes a bottom plate and a patch, and the patch is arranged on a side of the bottom plate close to the antenna body; the patch is a rectangular patch or a circular patch, and a cross-shaped groove is opened on a side of the patch close to the antenna body; The FB covering layer is parallel to the plane where the second end of the antenna body is located. When the antenna body is set on the ground, the FB covering layer is the reflection surface 1, the floor is the reflection surface 2, and the two planes constitute the FB resonance cavity; the antenna body is in the FB resonance cavity, and the electromagnetic waves radiated by the antenna element in the antenna body are superimposed in phase in the FB resonance cavity; The thickness of the FB covering layer matches a quarter of the wavelength of the electromagnetic wave radiated by the antenna element when propagating in the medium of the FB covering layer; The first coaxial line and the second coaxial line are respectively arranged on the first collective line and the second collective line, and include a coaxially arranged inner conductor, an insulating medium layer, and an outer conductor layer, wherein the insulating medium layer is arranged between the inner conductor and the outer conductor layer, and the outer conductor layers of the first coaxial line and the second coaxial line are respectively attached to the side of the first collective line and the second collective line away from the spatial axis; The second ends of the first and second collective wires are further provided with a first through hole and a second through hole, respectively. The shapes and sizes of the first and second through holes are respectively adapted to the first coaxial line and the second coaxial line. The output ends of the first and second coaxial lines are respectively connected to the first and second through holes, and the inner conductors of the first and second coaxial lines pass through the first and second through holes, respectively, and are connected to the third and fourth collective wires.

2. The multi-channel enhanced WIFI signal transceiver according to claim 1, characterized in that: Dual-polarization log-periodic antennas of different frequency bands are cross-arranged on the substrate.

3. The multi-channel enhanced WIFI signal transceiver according to claim 1, characterized in that: The dual-polarized log-periodic antenna further includes a dielectric strip, and the dielectric strip is disposed in a region surrounded by the first set of lines, the second set of lines, the third set of lines, and the fourth set of lines.

4. The multi-channel enhanced WIFI signal transceiver according to claim 1, characterized in that: The dual-polarized log-periodic antenna further includes more than two balanced-unbalanced transformers, each of which is respectively connected to a different set of lines among the first set of lines, the second set of lines, the third set of lines, and the fourth set of lines.

5. The multi-channel enhanced WIFI signal transceiver according to claim 1, characterized in that: The dual-polarized log-periodic antenna also includes: A third coaxial line, disposed on the third set line, and symmetrical with the first coaxial line about the space axis; The fourth coaxial line is arranged on the fourth set line and is symmetrical with the second coaxial line about the space axis.

6. The multi-channel enhanced WIFI signal transceiver according to claim 5, characterized in that: The input impedance of the first antenna single-polarization structure composed of the first set of lines, the third set of lines, and the first coaxial line, the third coaxial line, and the antenna element arranged on the first set of lines and the third set of lines, and the input impedance of the second antenna single-polarization structure composed of the second set of lines, the fourth set of lines, and the second coaxial line, the fourth coaxial line, and the antenna element arranged on the second set of lines and the fourth set of lines are both 50 ohms, and the wires of the first coaxial line, the second coaxial line, the third coaxial line, and the fourth coaxial line are 50 ohm coaxial lines.

7. The multi-channel enhanced WIFI signal transceiver according to claim 5, characterized in that: The dual-polarization log-periodic antenna further includes a reflector, which is disposed at the second end of the antenna body.

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