New multi-channel WIFI transceiver

Abstract

The present application relates to a multi-channel novel WIFI transceiver. The device includes a high-gain antenna device and two or more wireless hotspot devices, a bandpass filter 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 Yagi antennas arranged on the substrate. The dual-polarized Yagi antenna can reduce the polarization loss of signal transmission by designing a new reflector and an active vibrator and adopting a dual-polarization structure. By setting a reflector disk, the dual-polarized active vibrator can sense the in-phase current on the reflector disk, thereby improving the overall gain of the antenna. The high-gain antenna device 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 novel WIFI 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 novel multi-channel WIFI 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 new multi-channel WIFI transceiver to address the problem of low reliability of traditional WIFI signal transmission devices.

[0005] A multi-channel novel WIFI transceiver comprises a wireless hotspot device, a bandpass filter device, a frequency shift 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 Yagi antennas, each of which is arranged on the substrate; the number of the wireless hotspot device, the bandpass filter device, the frequency shift 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 shift device, and each of which is respectively connected to a corresponding frequency shift device and a dual-polarized Yagi antenna; the dual-polarized Yagi antenna comprises a reflector, an antenna axial rod, a dual-polarized reflector, a dual-polarized active vibrator and a dual-polarized director;

[0006] The dual-polarization reflector, the dual-polarization active vibrator, the dual-polarization director and the reflection dish are sequentially arranged on the antenna axial rod; the dual-polarization reflector is arranged at the first end of the antenna axial rod, the dual-polarization director is arranged at the second end of the antenna axial rod, the reflection dish is spaced apart from the dual-polarization director and is far away from the first end of the antenna axial rod, and the plane where the reflection dish is located is perpendicular to the antenna axial rod;

[0007] The dual-polarization director comprises a first director and a second director arranged orthogonally, the first director and the second director comprise a plurality of metal pieces arranged on the axial rod of the antenna, each of the metal pieces is perpendicular to the axial rod of the antenna, the foot of the perpendicular coincides with the midpoint of the metal piece, the length of each metal piece is shorter than the metal piece adjacent to it and close to the dual-polarization active vibrator, and when the first director and the second director are orthogonally arranged to form the dual-polarization director, every two metal pieces with the same length remain orthogonal and are in the same plane;

[0008] The dual-polarization reflector comprises a first reflector and a second reflector arranged orthogonally, the first reflector and the second reflector respectively comprise a metal piece arranged on both sides of the antenna axial rod, the metal piece of the dual-polarization reflector is perpendicular to the antenna axial rod, the foot of the perpendicular coincides with the midpoint of the metal piece, the first reflector and the first director are in the same plane, the second reflector and the second director are in the same plane, and the length of the metal piece of the dual-polarization reflector is longer than the length of any metal piece of the dual-polarization director;

[0009] The dual-polarization active vibrator includes two orthogonally arranged single-polarization active vibrators, namely a first active vibrator and a second active vibrator. The first active vibrator and the second active vibrator are respectively composed of two L-shaped metal parts symmetrically arranged on both sides of the antenna axial rod. One arm of the L-shaped metal part is a connecting arm, which is attached to the antenna axial rod, and the port of the connecting arm is connected to the dual-polarization reflector. The other arm is a functional arm, and the length of the functional arm is longer than the length of the director and shorter than the length of the reflector. At the same time, the first active vibrator and the first reflector are in the same plane, and the second active vibrator and the second reflector are in the same plane.

[0010] The above-mentioned multi-channel new WIFI transceiver device, the dual-polarized Yagi antenna can reduce the polarization loss of signal transmission by designing a new reflector and active vibrator, and adopting a dual-polarized structure. By setting a reflector, the dual-polarized active vibrator can sense the in-phase current on the reflector, thereby improving the overall gain of the antenna. The high-gain antenna device adopts a dual-polarized Yagi antenna to form an antenna array, forming a three-dimensional array structure, so that the high-gain antenna device can form a vertical plane beam, which can improve the gain. In addition, since the low-frequency signal has a longer wavelength and stronger penetration, the WIFI signal can be moved to the low-frequency band and then transmitted through the high-gain antenna device to increase the coverage of the WIFI signal, and 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 the corresponding dual-polarized Yagi antenna, 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-channel signal transmission channel, reduce mutual interference between signals, and improve the reliability of the use of the multi-channel new WIFI transceiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural block diagram of a multi-channel novel WIFI 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 Yagi antennas in one embodiment;

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

[0015] Figure 5 A front view of the overall structure of a dual-polarized Yagi antenna in one embodiment;

[0016] Figure 6 A rear view of the overall structure of a dual-polarized Yagi antenna in one embodiment;

[0017] Figure 7 An exploded diagram of a dual-polarized Yagi antenna in one embodiment;

[0018] Figure 8 is a front view of a dual-polarized Yagi antenna after explosion in one embodiment;

[0019] Fig. 9 A schematic diagram of the structure of an active oscillator in one embodiment;

[0020] Fig.10 is a side view of a dual-polarized Yagi antenna in one embodiment;

[0021] Fig.11 A schematic diagram of the structure of a feeding structure in one direction in an embodiment;

[0022] Fig.12 is a schematic structural diagram of a feeding structure in another direction in an embodiment;

[0023] Fig.13 A front view of the overall structure of a dual-polarized Yagi antenna in another embodiment;

[0024] Fig.14 A rear view of the overall structure of a dual-polarized Yagi antenna in another embodiment;

[0025] Fig.15 It is a structural block diagram of a multi-channel novel WIFI transceiver in another embodiment;

[0026] Fig.16 This is a structural principle diagram of a multi-channel novel WIFI transceiver in one embodiment;

[0027] Fig.17 FIG. 1 is a structural principle diagram of a multi-channel novel WIFI transceiver in another embodiment. DETAILED DESCRIPTION

[0028] 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.

[0029] In one embodiment, see Figure 1 and Figure 2, a multi-channel novel WIFI 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 Yagi 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 Yagi 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.

[0030] Specifically, the wireless hotspot device 5 mainly provides access from the multi-channel new WIFI transceiver device to the wired local area network and from the wired local area network to the multi-channel new WIFI transceiver device. Wireless workstations within the coverage of the wireless hotspot device 5 access point can communicate with each other through it. When transmitting a WIFI signal, the wireless hotspot device 5 accesses the network for processing and then sends it to the bandpass filter device 4 in the form of a WIFI signal. The bandpass filter device 4 sends it to the frequency shift device 3 after filtering. The frequency shift device 3 can realize the frequency shift of the signal, shifting the high-frequency band signal to the low-frequency band. 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 users can access the multi-channel new WIFI transceiver device from the wired local area network through the wireless hotspot device 5.

[0031] 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.

[0032] The frequency shifting device 3 uses analog mixer technology to shift the high frequency band signal to the low frequency band or shift 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 use 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 Yagi antenna 11 and the frequency shifting device 3. When the dual-polarized Yagi antenna 11 needs to work, the antenna switch device 2 is turned on, and the dual-polarized Yagi antenna 11 and the frequency shifting device 3 can transmit signals normally. When the antenna switch device 2 is disconnected, the dual-polarized Yagi antenna 11 is in standby mode. The dual-polarized Yagi antenna 11 is a carrier for receiving and sending signals. The dual-polarized Yagi 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.

[0033] The high-gain antenna device 1 includes a substrate 10 and two or more dual-polarized Yagi antennas 11, and each dual-polarized Yagi antenna 11 is arranged on the substrate 10. The material of the substrate 10 is not unique, and can be a metal plate or a plastic plate. In this embodiment, the substrate 10 is a metal substrate to improve the reliability of antenna fixing. The frequency bands of different dual-polarized Yagi antennas 10 can be the same or different. In this embodiment, the dual-polarized Yagi antennas 10 of different frequency bands are cross-arranged on the substrate 10. Figure 3 As shown, the dual-polarized Yagi antenna 10 includes a band 1 antenna and a band 2 antenna, and the antennas of the two different frequency bands are arranged crosswise. The specific structural dimensions of the dual-polarized Yagi antennas 10 of different frequency bands are also different, such as Figure 4 The figure shows a cross-type high-gain array diagram of dual-polarized Yagi antennas 10 of different frequency bands. 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 Yagi antennas of different frequency bands are placed crosswise, that is, the distance between the two dual-polarized Yagi antenna units is increased, which indirectly increases the effective aperture area and improves the antenna gain.

[0034] like Figure 5 and Figure 6As shown, the dual-polarization Yagi antenna 10 includes a reflection plate 400, a dual-polarization director 110, a dual-polarization active vibrator 120, a dual-polarization reflector 130 and an antenna axial rod 140. The dual-polarization director 110, the dual-polarization active vibrator 120, the dual-polarization reflector 130 and the reflection plate 400 are sequentially arranged on the antenna axial rod 140; and the dual-polarization reflector 130 is arranged at the first end of the antenna axial rod 140, the dual-polarization director 110 is arranged at the second end of the antenna axial rod 140, the reflection plate 400 is spaced apart from the dual-polarization director 110 and is away from the first end of the antenna axial rod 140, and the plane where the reflection plate 400 is located is perpendicular to the antenna axial rod 140.

[0035] Among them, the setting method of the reflector 400 is not unique. For example, it can be fixedly set at the first end of the antenna axis rod 140 when it leaves the factory or is installed to keep the position fixed, so that the reflector 400 and the antenna axis rod 140 are structurally integrated to improve the working performance. It can also be detachably fixed to the first end of the antenna axis rod 140, and the reflector 400 can be installed when needed without being disassembled, which is convenient to use. When the reflector 400 is damaged and cannot be used, only the reflector 400 can be replaced, avoiding the overall replacement of the dual-polarization Yagi antenna and saving maintenance costs. The reflector 400 can be regarded as a parasitic antenna vibrator. The dual-polarization active vibrator 120 can induce a same-phase current on the reflector 400. The reflector 400 and the dual-polarization active vibrator 120 are in the same direction, which can improve the gain of the dual-polarization Yagi antenna.

[0036] Further, in one embodiment, the reflector 400 is a circular disk, and the radius of the reflector 400 does not exceed the length of the dual-polarization reflector 130. The distance between the reflector 400 and the second end of the antenna axial rod 140 matches one-fourth of the wavelength of the dual-polarization active vibrator 120. In this case, the gain of the dual-polarization Yagi antenna is relatively high. The shape, size and distance between the reflector 400 and the second end of the antenna axial rod 140 are not unique. In this embodiment, the reflector is a circular disk, and the dual-polarization active vibrator 120 can induce a stable in-phase current on the circular disk. The radius of the reflector 400 does not exceed the length of the dual-polarization reflector 130. Specifically, in other embodiments, the radius of the reflector 400 can be between 0.5 and 1 times the length of the dual-polarization reflector, and the circular disk is about one-fourth of the wavelength away from the dual-polarization director. Taking the simulation results of the dual-polarization Yagi antenna operating in the 1.7-1.9 GHz frequency band as an example, the radius of the reflector 400 is set to about 27.8 mm, and the distance from the dual-polarization director is 40 mm, ultimately achieving a high gain of up to 11.4 dB.

[0037] It should be noted that Figure 5 Only the overall structure of the dual-polarized Yagi antenna is shown. Figure 3-8The specific structures of the dual-polarization director 110, the dual-polarization active oscillator 120 and the dual-polarization reflector 130 will be described in detail.

[0038] In one embodiment, Figure 5 As shown, the dual-polarized Yagi antenna further includes a reflector 300, which is disposed on a side of the dual-polarized reflector 130 away from the second end. Further, in one embodiment, the dual-polarized reflector 130 is disposed on the reflector 300. The reflector 300 is a metal flat plate having a rectangular, circular, regular polygonal shape, etc., and is used to enhance reflection and improve the front-to-back ratio of the antenna.

[0039] Furthermore, in one embodiment, although not shown in the figure, the dual-polarized Yagi antenna further includes a radome, which is a cavity structure with an opening at one end and a closed end, and the open end is fixed on the reflector 300. The dual-polarized Yagi antenna can be placed in the cavity structure of the radome to protect the antenna components. Furthermore, in other embodiments, the radome can be open at one end and a spherical lens structure at the other end, and the open end is fixed on the reflector 300. By making the other end of the radome into a spherical lens structure, the waveform radiated by the antenna can be corrected and compensated, and the uneven spherical wave can be corrected to a uniform spherical wave, which plays a role in correcting and compensating the waveform of the antenna and improving the gain of the antenna.

[0040] Furthermore, in one embodiment, the surface of the antenna cover is coated with a left-handed material, wherein the surface of the antenna cover refers to the inner surface of the antenna cover, and the left-handed material is a material of an artificial periodic structure in which both the dielectric constant and the magnetic permeability are negative, wherein the electric field component, the magnetic field component and the wave vector of the propagating electromagnetic wave satisfy the left-hand rule, and the phase velocity and the group velocity are in opposite directions, and many peculiar physical and optical phenomena that do not exist in nature can be presented, which mainly has a negative refraction characteristic, and by coating the left-handed material on the antenna cover, it can play a role in energy convergence.

[0041] It should be noted that Figure 5 The coaxial feed line 500 is also shown in the figure, and the coaxial feed line 500 will be explained in detail later in this article. Figure 6 for Figure 5 The corresponding rear view, Figure 6 The dual polarized Yagi antenna in Figure 5 The overall structure of the dual-polarized Yagi antenna provided is the same, so no further discussion will be given here. Figure 6 Provide specific and detailed explanation.

[0042] For the convenience of description, the two ends of the antenna axial rod (i.e., the first end and the second end) may be referred to as end A and end B respectively, where end A represents the second end and end B represents the first end. The dual-polarization director 110 is disposed at end A, and the dual-polarization reflector 130 is disposed at end B. In one embodiment, Figure 7 as well as Figure 8 As shown, the dual-polarization director 110, the dual-polarization active vibrator 120 and the dual-polarization reflector 130 are relatively independent and are sequentially arranged on the antenna axial rod (not shown). It should be noted that in the dual-polarization Yagi antenna, the number of dual-polarization directors 110 can be multiple, and the lengths are different. The lengths of different dual-polarization directors 110 gradually become shorter in the direction from the A end to the B end, for example Figure 7 as well as Figure 8 Four dual-polarization directors 110 are shown in the figure, and the dual-polarization reflector 130 is the longest, the dual-polarization director 110 is slightly shorter than the dual-polarization reflector 130, and the dual-polarization active vibrator 120 is the shortest.

[0043] like Figure 7 as well as Figure 8 As shown, the dual-polarization director 110 includes a first director and a second director arranged orthogonally, the first director and the second director are the same, and are composed of a plurality of metal parts arranged on the antenna axial rod (not shown), the metal parts here can be metal rods or metal strips, the metal parts are perpendicular to the antenna axial rod, and the foot of the vertical part coincides with the midpoint of the metal parts, so that the two ends of the metal parts are symmetrically arranged on the antenna axial rod. At the same time, the length relationship between the plurality of metal parts is: the lengths of the metal parts are different, and the length of each metal part is shorter than the metal part adjacent to it and close to the dual-polarization active vibrator, that is, along the direction from the B end to the A end, the length of the metal parts becomes shorter in sequence; or it can also be along the direction from the B end to the A end, the metal parts are divided into a plurality of groups, the lengths of the plurality of metal parts in each group are the same, but the length of each group of metal parts is shorter than the length of the group of metal parts adjacent to it and close to the B end. At the same time, when the first director and the second director are orthogonally combined into a dual-polarization director, the metal pieces with the same length also remain orthogonal and are in the same plane, that is, the metal pieces with the same length form a cross shape as shown in the figure and are arranged on the antenna axial rod.

[0044] The dual-polarization reflector 130 includes a first reflector and a second reflector arranged orthogonally. The first reflector is the same as the second reflector, and each is composed of a metal piece arranged on the antenna axial rod. The metal piece is perpendicular to the antenna axial rod, and the foot of the perpendicular coincides with the midpoint of the metal piece, so that the two ends of the metal piece are symmetrically arranged on the antenna axial rod, and the first reflector and the second reflector are in the same plane. The length of the metal piece of the dual-polarization reflector 130 is longer than the length of any metal piece of the dual-polarization director 110.

[0045] like Fig. 9As shown, the dual-polarization active vibrator 120 includes two identical single-polarization active vibrators arranged orthogonally, namely, the first active vibrator and the second active vibrator, which are respectively composed of two L-shaped metal pieces symmetrically arranged on both sides of the antenna axial rod, one arm of the L-shaped metal piece is a connecting arm 121, which is attached to the antenna axial rod, and the port 122 on the connecting arm 121 is connected to the corresponding metal piece of the dual-polarization reflector 130, that is, one L-shaped metal piece of the first active vibrator is connected to the metal piece on one side of the first reflector, and the other L-shaped metal piece of the first active vibrator is connected to the metal piece on the other side of the first reflector, and the second active vibrator is also connected. This is not repeated, and the length of the connecting arm 121 can be adjusted according to actual needs such as the wavelength of the signal received and transmitted by the antenna. The other arm of the L-shaped metal piece is a functional arm 123, and the sum of the lengths of the two functional arms of the active vibrator arranged on both sides of the antenna axial rod is greater than the length of any metal piece of the dual-polarization director 101, and less than the length of the metal piece of the dual-polarization reflector 130. The angle between the connecting arm 121 and the functional arm 123 of the L-shaped metal piece can be adjusted according to actual signal receiving and sending requirements. In one embodiment, the angle between the connecting arm 121 and the functional arm 123 of the L-shaped metal piece is 90°.

[0046] See also Fig.10 The relationship between the dual-polarization director 110, the dual-polarization active vibrator 120 and the dual-polarization reflector 130 also includes: the first active vibrator, the first reflector and the first director are in the same plane, the second active vibrator, the second reflector and the second director are in the same plane, and the view of the entire antenna from end A to end B is roughly a cross shape.

[0047] See also Fig.11 and Fig.12 In one embodiment, a feeding structure 200 is provided on the first active vibrator and the second active vibrator of the dual-polarization active vibrator 130, including a metal protrusion 201, a coaxial line 202, a support member 203 and a metal shell 204. The metal protrusion 201 is used as a feeding point and is arranged on one of the functional arms 123a of the single-polarization active vibrator for receiving feeding. The port at one end of the coaxial line 202 is connected to the metal protrusion 201 for transmitting current to the active vibrator to drive the antenna to work. The support member 203 is coated on the outside of the coaxial line 202 for isolating the coaxial line 202 from the external environment. At the same time, in one embodiment, the material of the support member is polytetrafluoroethylene, which further plays an insulating role. The metal shell 204 is arranged outside the support member 203, and a part of the metal shell 204 is embedded in another functional arm 123b where the metal protrusion 201 is not arranged, for grounding the metal shell, so that the coaxial line 202 and the metal shell 204 form a potential difference.

[0048] In one embodiment, the dual-polarized Yagi antenna further includes a feed input component, which is connected to a feed structure on the first active element and a feed structure on the second active element. The feed input component is used to input feed to the dual-polarized reflector, the dual-polarized active element and the dual-polarized director in the dual-polarized Yagi antenna, so that the dual-polarized Yagi antenna can receive feed and work normally.

[0049] Further, in one embodiment, the feed input assembly is disposed at the first end of the antenna axial rod. It is understood that in other embodiments, the feed input assembly may also be disposed at the second end of the antenna axial rod.

[0050] Further, in one embodiment, reference may be made to Figure 5 and Figure 6 The feed input assembly includes a coaxial feed line 500, and the coaxial feed line 500 connects the feed structure on the first active vibrator and the feed structure on the second active vibrator, wherein the dual-polarization active vibrator 120 includes the first active vibrator and the second active vibrator. The coaxial feed line 500 can be a 50-ohm coaxial line, and correspondingly, the input impedance of the dual-polarization Yagi antenna is 50 ohms. By using the coaxial feed line 500 to provide feeding to the feeding structure of the first active vibrator and the second active vibrator, there is no need to use an impedance transformer, thereby saving feeding costs.

[0051] In another embodiment, reference may be made to Fig.13 and Fig.14 , Fig.13 and Figure 5 The difference lies in the different structures of the feed input components. Fig.13 In the embodiment, the feed input component includes a balun feed device 600, and the balun feed device 600 connects the feed structure on the first active dipole and the feed structure on the second active dipole. The dual-polarization active dipole 120 includes a first active dipole and a second active dipole. The balun feed device 600 is a balanced-unbalanced transformer, and balanced feeding of the antenna dipole can be achieved through the balun feed device 600.

[0052] In one embodiment, the antenna axial rod is in the shape of a square rod. The antenna axial rod is a metal support rod, and its shape can be a round rod, a square rod, a track, etc., and is used to carry various components of the antenna.

[0053] Furthermore, in one embodiment, the antenna axial rod includes a first feed assembly plate, a second feed assembly plate, a third feed assembly plate and a fourth feed assembly plate, and the first feed assembly plate, the second feed assembly plate, the third feed assembly plate and the fourth feed assembly plate are enclosed to form a cavity, and a dielectric strip is arranged in the cavity. Among them, the material of the dielectric strip can be an inorganic ceramic material or an organic dielectric material, and the cross-sectional area of ​​the dielectric strip is equal to the cross-sectional area of ​​the cavity, so that the dielectric strip is conveniently fixed in the cavity and the working stability is improved. By arranging the dielectric strip in the cavity, the Hansen-Woodyard end-fire condition can be achieved to form a strong end-fire array. The dielectric constants between each layer of oscillators are different, forming a strong end-fire array, so as to achieve the purpose of improving the gain of the antenna itself. It can be understood that the dual-polarization reflector, dual-polarization active vibrator and dual-polarization director mentioned above are connected to the above-mentioned feed assembly plate, thereby being fixed on the axial rod of the antenna. For example, the dual-polarization reflector can be connected to the first feed assembly plate, the second feed assembly plate, the third feed assembly plate and the fourth feed assembly plate at the same time, or it can be connected only to the first feed assembly plate and the third feed assembly plate to be fixed on the axial rod of the antenna.

[0054] In one embodiment, see Fig.15 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.

[0055] Specifically, the transmission and reception of WIFI signals in the multi-channel novel WIFI 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.

[0056] In this embodiment, taking the example that the number of dual-polarized Yagi 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 Yagi antennas 11, the second antenna switch device 2 is connected to three dual-polarized Yagi antennas 11, and so on, the Nth antenna switch device 2 is connected to N+1 dual-polarized Yagi antennas 11. Taking the first antenna switch device 2 as an example, two dual-polarized Yagi 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 new WIFI transceiver. Since the number of dual-polarized Yagi 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 Yagi antennas 11 is, the higher the gain is. In actual use, the corresponding number of dual-polarized Yagi 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 new WIFI transceiver.

[0057] 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.

[0058] 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.

[0059] In one embodiment, see Fig.15 The multi-channel novel WIFI 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.

[0060] In one embodiment, see Fig.15 The multi-channel novel WIFI transceiver device further 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.

[0061] 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.

[0062] In order to better understand the above embodiment, two specific embodiments are explained in detail below. represents a dual polarized Yagi antenna 11. In one embodiment, see Fig.16 , using a conventional WIFI AP (Access Point) (such as 2.4 GHz), the frequency is moved to a low frequency band (such as 700 MHz) that is more suitable for large-scale coverage, and the signal is transmitted (received) through the dual-polarized Yagi antenna 11. In one embodiment, see Fig.17 , 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 Yagi antenna 11. The dual-polarized Yagi 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 Yagi antenna are used to solve the current disadvantage of short WIFI transmission distance. The advantages of the dual-polarized Yagi antenna and low-frequency transmission are combined to achieve large-scale WIFI coverage.

[0063] The above-mentioned multi-channel new WIFI transceiver device, the dual-polarized Yagi antenna can reduce the polarization loss of signal transmission by designing a new reflector and active vibrator, and adopting a dual-polarized structure. By setting a reflector, the dual-polarized active vibrator can sense the in-phase current on the reflector, thereby improving the overall gain of the antenna. The high-gain antenna device adopts a dual-polarized Yagi antenna to form an antenna array, forming a three-dimensional array structure, so that the high-gain antenna device can form a vertical plane beam, which can improve the gain. In addition, since the low-frequency signal has a longer wavelength and stronger penetration, the WIFI signal can be moved to the low-frequency band and then transmitted through the high-gain antenna device to increase the coverage of the WIFI signal, and 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 the corresponding dual-polarized Yagi antenna, 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-channel signal transmission channel, reduce mutual interference between signals, and improve the reliability of the use of the multi-channel new WIFI transceiver.

[0064] 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.

[0065] 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 new multi-channel WIFI 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. The high-gain antenna device includes a substrate and two or more dual-polarized Yagi antennas, and each of the dual-polarized Yagi 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 Yagi antenna; the dual-polarized Yagi antenna includes a reflector, an antenna axial rod, a dual-polarized reflector, a dual-polarized active vibrator and a dual-polarized director; The dual-polarization reflector, the dual-polarization active vibrator, the dual-polarization director and the reflection plate are sequentially arranged on the antenna axial rod; the dual-polarization reflector is arranged at the first end of the antenna axial rod, the dual-polarization director is arranged at the second end of the antenna axial rod, the number of the dual-polarization directors is multiple, and in the direction from the second end of the antenna axial rod to the first end of the antenna axial rod, the lengths of the different dual-polarization directors gradually become shorter; The reflective dish is spaced apart from the dual-polarization director and is far away from the first end of the antenna axial rod, and the plane where the reflective dish is located is perpendicular to the antenna axial rod; the reflective dish is a circular dish, the radius of the reflective dish does not exceed the length of the dual-polarization reflector, and the spacing distance between the reflective dish and the dual-polarization director is one-quarter of the wavelength of the dual-polarization active oscillator; The dual-polarization director comprises a first director and a second director arranged orthogonally, the first director and the second director comprise a plurality of metal pieces arranged on the axial rod of the antenna, each of the metal pieces is perpendicular to the axial rod of the antenna, the foot of the perpendicular coincides with the midpoint of the metal piece, the length of each metal piece is shorter than the metal piece adjacent to it and close to the dual-polarization active vibrator, and when the first director and the second director are orthogonally arranged to form the dual-polarization director, every two metal pieces with the same length remain orthogonal and are in the same plane; The dual-polarization reflector comprises a first reflector and a second reflector arranged orthogonally, the first reflector and the second reflector respectively comprise a metal piece arranged on both sides of the antenna axial rod, the metal piece of the dual-polarization reflector is perpendicular to the antenna axial rod, the foot of the perpendicular coincides with the midpoint of the metal piece, the first reflector and the first director are in the same plane, the second reflector and the second director are in the same plane, and the length of the metal piece of the dual-polarization reflector is longer than the length of any metal piece of the dual-polarization director; The dual-polarization active vibrator includes two orthogonally arranged single-polarization active vibrators, namely, a first active vibrator and a second active vibrator. The first active vibrator and the second active vibrator are respectively composed of two L-shaped metal pieces symmetrically arranged on both sides of the antenna axial rod. One arm of the L-shaped metal piece is a connecting arm, which is attached to the antenna axial rod, and the port of the connecting arm is connected to the dual-polarization reflector. The other arm is a functional arm, and the length of the functional arm is longer than the length of the director and shorter than the length of the reflector. At the same time, the first active vibrator and the first reflector are in the same In the plane, the second active vibrator and the second reflector are in the same plane; the antenna axial rod includes a first feed assembly plate, a second feed assembly plate, a third feed assembly plate and a fourth feed assembly plate, the first feed assembly plate, the second feed assembly plate, the third feed assembly plate and the fourth feed assembly plate together form a cavity, and a dielectric strip is arranged in the cavity; the cross-sectional area of ​​the dielectric strip is equal to the cross-sectional area of ​​the cavity, the material of the dielectric strip is inorganic ceramic material or organic dielectric material, and the dielectric constant between each layer of vibrators is different.

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

3. The multi-channel novel WIFI transceiver according to claim 1, characterized in that: The dual-polarization Yagi antenna further includes a reflection plate, and the reflection plate is arranged on a side of the dual-polarization reflector away from the second end.

4. The multi-channel novel WIFI transceiver according to claim 3, characterized in that: The dual-polarization Yagi antenna also includes an antenna cover, which is a cavity structure with an opening at one end and a closed end at the other end, and the open end is fixed to the reflecting plate.

5. The multi-channel novel WIFI transceiver according to claim 4, characterized in that: The cavity structure enclosed by the antenna cover is a spherical lens structure.

6. The multi-channel novel WIFI transceiver according to claim 4, characterized in that: The radome surface is coated with a left-handed material.

7. The multi-channel novel WIFI transceiver according to claim 1, characterized in that: The dual-polarization active oscillator further includes a feeding structure arranged on the first active oscillator and a feeding structure arranged on the second active oscillator, each of the feeding structures including: A metal bump, disposed on one of the functional arms, for receiving power supply; A coaxial line, one end of which is connected to the metal bump, and is used to transmit current to the single-polarization active vibrator to drive the antenna to work; A support member, covering the outside of the coaxial line, and used to isolate the coaxial line from the external environment; The metal shell is arranged outside the support member, and a part of the metal shell is embedded in the functional arm where the metal protrusion is not arranged.

8. The multi-channel novel WIFI transceiver according to claim 7, characterized in that: The dual-polarized Yagi antenna further includes a coaxial feed line, which connects a feed structure on the first active element and a feed structure on the second active element.

9. The multi-channel novel WIFI transceiver according to claim 7, characterized in that: The dual-polarized Yagi antenna further includes a balun feeding device, which connects a feeding structure on the first active element and a feeding structure on the second active element.

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