CN113555665A

CN113555665A - Multi-channel high-gain WIFI (Wireless Fidelity) transceiver

Info

Publication number: CN113555665A
Application number: CN202010268808.3A
Authority: CN
Inventors: 张少林; 崔立成
Original assignee: Shenzhen Wave Technology Co Ltd
Current assignee: Shenzhen Wave Technology Co Ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-10-26

Abstract

The application relates to a multichannel high-gain WIFI transceiver. The device comprises a high-gain antenna device, and more than two equal wireless hot spot devices, band-pass filtering devices, frequency moving devices and antenna switch devices which are connected in sequence, wherein the high-gain antenna device comprises a substrate and more than two dual-polarized yagi antennas arranged on the substrate, the dual-polarized yagi antennas adopt a dual-polarized structure by designing a novel reflector and an active oscillator, can reduce the polarization loss of signal transmission, the lens can compensate and correct the non-uniform spherical wave of the antenna to realize the phase compensation of the antenna waveform, the high-gain antenna device can form vertical plane wave beams, improve the integral gain of the antenna, and the WIFI signal is moved to a low frequency band and then is emitted out to increase the coverage range of the WIFI signal, and the multi-channel high-gain WIFI transceiver comprises a multi-input multi-output signal transmission channel, so that the use reliability is high.

Description

Multi-channel high-gain WIFI (Wireless Fidelity) transceiver

Technical Field

The application relates to the field of wireless technology, in particular to a multi-channel high-gain WIFI transceiver.

Background

WIFI is a wireless local area network technology established in the IEEE 802.11 standard, and improves the interoperability between wireless network products based on the standard. WIFI belongs to a short-distance wireless technology, has the advantages of high transmission speed, low transmitting power, no need of wiring and the like, can meet personal and social informatization requirements, can automatically adjust bandwidth under the condition of weak signals, and effectively ensures the stability and reliability of a network.

The coverage range of the WIFI signal transmitted by the traditional WIFI signal transmission device is limited, a user cannot receive the WIFI signal in an area beyond the coverage range of the WIFI, normal use of the user is affected, and reliability is low.

Disclosure of Invention

Therefore, it is necessary to provide a multi-channel high-gain WIFI transceiver for solving the problem of low reliability of the conventional WIFI signal transmission device.

A multi-channel high-gain WIFI transceiver comprises a wireless hotspot device, a band-pass filter device, a frequency moving device, an antenna switch device and a high-gain antenna device, wherein the high-gain antenna device comprises a substrate and two or more than two dual-polarized yagi antennas, and each dual-polarized yagi antenna is arranged on the substrate; the number of the wireless hot spot devices, the number of the band-pass filtering devices, the number of the frequency moving devices and the number of the antenna switching devices are the same and are two or more, each band-pass filtering device is respectively connected with the corresponding wireless hot spot device and the corresponding frequency moving device, and each antenna switching device is respectively connected with the corresponding frequency moving device and the corresponding dual-polarized yagi antenna; the dual-polarized yagi antenna comprises a lens, an antenna axial rod, a dual-polarized reflector, a dual-polarized active oscillator and a dual-polarized director;

the dual-polarized reflector, the dual-polarized active oscillator, the dual-polarized director and the lens are sequentially arranged on the antenna axial rod; the dual-polarized reflector is arranged at the first end of the antenna axial rod, and the dual-polarized director and the lens are arranged at the second end of the antenna axial rod;

the dual-polarized director comprises a first director and a second director which are orthogonally arranged, the first director and the second director comprise a plurality of metal pieces arranged on the axial rod of the antenna, each metal piece is perpendicular to the axial rod of the antenna, a vertical foot is superposed with the midpoint of each metal piece, the length of each metal piece is shorter than that of the adjacent metal piece close to the dual-polarized active oscillator, and when the first director and the second director orthogonally form the dual-polarized director, every two metal pieces with the same length are kept orthogonal and are positioned in the same plane;

the dual-polarized reflector comprises a first reflector and a second reflector which are orthogonally arranged, the first reflector and the second reflector respectively comprise a metal piece arranged on two sides of the axial rod of the antenna, the metal piece of the dual-polarized reflector is perpendicular to the axial rod of the antenna, a foot is coincided with the midpoint of the metal piece, the first reflector and the first director are positioned in the same plane, the second reflector and the second director are positioned in the same plane, and the length of the metal piece of the dual-polarized reflector is longer than that of any metal piece of the dual-polarized director;

the dual-polarized active oscillator comprises two single-polarized active oscillators, namely a first active oscillator and a second active oscillator, which are orthogonally arranged, wherein the first active oscillator and the second active oscillator are respectively composed of two L-shaped metal pieces symmetrically arranged on two sides of an antenna axial rod, one arm of each L-shaped metal piece is a connecting arm and is attached to the antenna axial rod, a port of each connecting arm is connected with the dual-polarized reflector, the other arm of each L-shaped metal piece is a functional arm, and the length of each functional arm is longer than that of the director and shorter than that of the reflector; meanwhile, the first active oscillator and the first reflector are in the same plane, and the second active oscillator and the second reflector are in the same plane.

Above-mentioned multichannel high-gain WIFI transceiver, double polarization yagi antenna are through designing novel reflector and active oscillator to adopt dual polarization structure, can reduce signal transmission's polarization loss, lens can compensate the correction with the inhomogeneous spherical wave of antenna, obtain even spherical wave, thereby realize the phase compensation to the antenna waveform, improve the whole gain of antenna. The high-gain antenna device adopts dual-polarized yagi antennas to form an antenna array to form a three-dimensional array structure, so that the high-gain antenna device can form vertical plane beams and can improve gain. In addition, because the low-frequency band signal wavelength is longer, the penetrating power is stronger, move the WIFI signal to the high-gain antenna device after the low-frequency band and launch again and can increase the coverage of WIFI signal, and do not receive the separation of barriers such as building or trees, more be adapted to bad weather. Each antenna switch device is connected with the corresponding dual-polarized yagi antenna, each frequency moving device is connected with the corresponding band-pass filter device, and each band-pass filter device is connected with the corresponding wireless hotspot device, so that a multi-channel signal transmission channel can be formed, the mutual interference between signals is reduced, and the use reliability of the multi-channel high-gain WIFI transceiver is improved.

Drawings

Fig. 1 is a block diagram of a multi-channel high-gain WIFI transceiver in an embodiment;

FIG. 2 is a block diagram of a high gain antenna assembly in one embodiment;

fig. 3 is a schematic distribution diagram of a dual-polarized yagi antenna in one embodiment;

fig. 4 is a schematic distribution diagram of a dual-polarized yagi antenna in another embodiment;

fig. 5 is a front view of the overall structure of a dual polarized yagi antenna in an embodiment;

fig. 6 is a rear view of the overall structure of the dual polarized yagi antenna of an embodiment;

FIG. 7 is an exploded view of a dual polarized yagi antenna according to one embodiment;

fig. 8 is an elevation view of an embodiment of a dual polarized yagi antenna after detonation;

FIG. 9 is a diagram illustrating an embodiment of an active oscillator structure;

fig. 10 is a side view of a dual polarized yagi antenna in an embodiment;

FIG. 11 is a schematic diagram of one direction of a feeding structure in one embodiment;

FIG. 12 is a schematic diagram of another direction of the feeding structure in one embodiment;

fig. 13 is a front view of the overall structure of a dual polarized yagi antenna of another embodiment;

fig. 14 is a rear view of the overall structure of a dual polarized yagi antenna of another embodiment;

fig. 15 is a block diagram of a multi-channel high-gain WIFI transceiver in another embodiment;

fig. 16 is a schematic structural diagram of a multi-channel high-gain WIFI transceiver in an embodiment;

fig. 17 is a schematic structural diagram of a multi-channel high-gain WIFI transceiver in another embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described more fully below by way of examples in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In an embodiment, please refer to fig. 1 and 2, a multi-channel high-gain WIFI transceiver is provided, which includes a wireless hotspot device 5, a band-pass filter device 4, a frequency moving device 3, an antenna switch device 2 and a high-gain antenna device 1, where the high-gain antenna device 1 includes a substrate 10 and two or more dual-polarized yagi antennas 11, each dual-polarized yagi antenna 11 is disposed on the substrate 10, the wireless hotspot device 5, the band-pass filter device 4, the frequency moving device 3 and the antenna switch device 2 are the same in number and are two or more, each band-pass filter device 4 is connected to the corresponding wireless hotspot device 5 and the frequency moving device 3, and each antenna switch device 2 is connected to the corresponding frequency moving device 3 and the dual-polarized yagi antenna 11. The wireless hotspot device 5 is used for generating WIFI signals, the generated WIFI signals are filtered by the band-pass filter device 4 and then sent to the frequency moving device 3, the frequency moving device 3 can move the frequency of the signals, the high-frequency band signals are moved to the low-frequency band, and the moved signals are transmitted out through the antenna switch device 2 and the high-gain antenna device 1. Because the low-frequency band signal wavelength is longer, and the penetrating power is stronger, move the WIFI signal to the low-frequency band after the rethread high gain antenna device 1 launches out and can increase the coverage of WIFI signal, and do not receive the separation of barriers such as building or trees, more be adapted to bad weather, use the reliability height.

Specifically, wireless hotspot device 5 mainly provides access of the multi-channel high-gain WIFI transceiver to the wired local area network and from the wired local area network to the multi-channel high-gain WIFI transceiver, through which wireless workstations within the access point coverage area of wireless hotspot device 5 can communicate with each other. When a WIFI signal is transmitted, the wireless hotspot device 5 is connected to a network for processing and then is transmitted to the band-pass filter device 4 in the form of the WIFI signal, the band-pass filter device 4 filters and then transmits the signal to the frequency moving device 3, the frequency moving device 3 can realize the frequency moving of the signal, the signal in a high frequency band is moved to a low frequency band, and the moved signal is transmitted through the antenna switch device 2 and the high-gain antenna device 1. When receiving a WIFI signal, the high-gain antenna device 1 can sense an electromagnetic signal in a space and then send the electromagnetic signal to the antenna switch device 2, the antenna switch device 2 transmits the signal to the frequency moving device 3, the frequency moving device 3 can move the frequency of the signal, the low-frequency band signal is moved to a high-frequency band, the moved signal is transmitted to the band-pass filter device 4 for filtering, the filtered signal is sent to the wireless hotspot device 5, and a user can access the multi-channel high-gain WIFI transceiver from a wired local area network through the wireless hotspot device 5.

The band-pass filter 4 is mainly used to filter the signals flowing through, allowing the signals in a specific frequency band to pass through while shielding the signals in other frequency bands. According to the difference of actual demand, can adopt the bandpass filter 4 of different structures to the signal of the frequency channel that remains and filter is also different, thereby application scope is wider.

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 those skilled in the art can realize it. The antenna switching device 2 can control the on-off of signals between the dual-polarized yagi antenna 11 and the frequency moving device 3, when the dual-polarized yagi antenna 11 is needed to work, the antenna switching device 2 is switched on, the dual-polarized yagi antenna 11 and the frequency moving device 3 can normally transmit signals, and when the antenna switching device 2 is switched off, the dual-polarized yagi antenna 11 is in a standby state. 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 a space and can also transmit the signals, the WIFI signals are received and sent, and the use is convenient and fast.

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 disposed on the substrate 10. The material of the substrate 10 is not exclusive, and may be a metal plate, a plastic plate, or the like, and in the present embodiment, the substrate 10 is a metal substrate, which improves the antenna fixing reliability. The frequency bands of the different dual polarized yagi antennas 10 may be the same or different. In this embodiment, the dual-polarized yagi antennas 10 of different frequency bands are arranged in a crossed manner on the substrate 10. As shown in fig. 3, the dual-polarized yagi antenna 10 includes a frequency band 1 antenna and a frequency band 2 antenna, and the two antennas in different frequency bands are arranged in a crossed manner. The specific structural dimensions of the dual-polarized yagi antennas 10 of different frequency bands are different, and as shown in fig. 4, a cross-type high-gain array mode diagram between the dual-polarized yagi antennas 10 of different frequency bands is shown, where the frequency band 1 antenna is a low-frequency antenna and has a high height, and the frequency band 2 antenna is a high-frequency antenna and has a low height. The dual-polarized yagi antennas with different frequency bands are placed in a crossed mode, namely, the space between two dual-polarized yagi antenna units is enlarged, the effective caliber area is indirectly increased, and the antenna gain is improved.

As shown in fig. 5 and 6, dual-polarized yagi antenna 10 includes lens 400, antenna axial rod 140, dual-polarized reflector 130, dual-polarized active element 120, and dual-polarized director 110; the antenna axial rod 140 is a metal support rod, and may be in the shape of a round rod, a square rod, a track, or the like, and is used for mounting each component of the antenna.

The dual-polarized reflector 130, the dual-polarized active element 120, the dual-polarized director 110 and the lens 400 are sequentially arranged on the antenna axial rod 140; a dual polarized reflector 130 is disposed at a first end of the antenna axial rod 140 and a dual polarized director 110 and lens 400 are disposed at a second end of the antenna axial rod 140.

The dual-polarized director 110 comprises a first director and a second director which are orthogonally arranged, the first director and the second director comprise a plurality of metal pieces arranged on the antenna axial rod 140, each metal piece is perpendicular to the antenna axial rod 140, a foot is superposed with the midpoint of each metal piece, the length of each metal piece is shorter than that of the adjacent metal piece close to the dual-polarized active oscillator 120, and when the first director and the second director orthogonally form the dual-polarized director 110, every two metal pieces with the same length are kept orthogonal and are positioned in the same plane;

the dual-polarized reflector 130 comprises a first reflector and a second reflector which are orthogonally arranged, the first reflector and the second reflector respectively comprise a metal piece arranged on two sides of the antenna axial rod 140, the metal piece of the dual-polarized reflector 130 is perpendicular to the antenna axial rod 140, the vertical foot coincides with the midpoint of the metal piece, the first reflector and the first director are located in the same plane, the second reflector and the second director are located in the same plane, and the length of the metal piece of the dual-polarized reflector 130 is longer than that of any metal piece of the dual-polarized director 110.

The dual-polarized active oscillator 120 comprises two single-polarized active oscillators, namely a first active oscillator and a second active oscillator, which are orthogonally arranged, wherein the first active oscillator and the second active oscillator are respectively composed of two L-shaped metal pieces symmetrically arranged on two sides of the antenna axial rod 140, one arm of each L-shaped metal piece is a connecting arm and is attached to the antenna axial rod 140, a port of each connecting arm is connected with the dual-polarized reflector 130, the other arm of each L-shaped metal piece is a functional arm, and the length of each functional arm is longer than that of the director and shorter than that of the reflector; meanwhile, the first active oscillator and the first reflector are in the same plane, and the second active oscillator and the second reflector are in the same plane.

It can be understood that the antenna itself radiates outward in the form of spherical waves, so that the equiphase surface thereof is a spherical surface, for an end-fire array, the radiation thereof is diffused in the form of spherical waves in the most general direction, and by arranging the lens 400 at the top of the axial rod 140 of the antenna, the non-uniform spherical waves diffused outward by the antenna can be converted into the uniform spherical waves through the lens 400, so as to improve the overall gain of the antenna. Further, in one embodiment, the lens 400 may be a dielectric material, such as a low-k organic material, including glass reinforced plastic, PTFE (polytetrafluoroethylene), and the like.

Although a specific connection manner between the antenna and the lens 400 is not shown in fig. 5 and 6, the lens 400 and the antenna may be fixed by foam connection or directly attached to the top of the antenna, or fixed by a pillar, etc. Further, as shown in fig. 5 and fig. 6, the convex surface of the lens 400 faces upward, and correspondingly, in other embodiments, the convex surface of the lens 400 may face in other directions according to actual needs.

In one embodiment, the lens may be a spherical lens. The spherical lens has an arc-shaped spherical surface, and can better compensate and correct the non-uniform spherical waves of the antenna, so that the non-uniform spherical waves of the antenna are corrected into uniform spherical waves, and the gain of the antenna is improved. Further, in one embodiment, the non-uniform spherical waves of the antenna are compensated by arranging the spherical lens, so that the dual-polarized yagi antenna can achieve at least 9dB of gain.

In one embodiment, the dual-polarized yagi antenna further comprises a connector, and the lens is fixedly arranged at the second end of the axial rod of the antenna through the connector. Specifically, the second end of the axial rod of the antenna corresponds to the top of the antenna, and the connecting member may be a connecting member made of a foam material.

In one embodiment, as shown in fig. 5 and 6, the dual polarized yagi antenna further comprises a reflection plate 300, and the reflection plate 300 is disposed on a side of the dual polarized reflector 130 away from the second end. Specifically, the reflective plate 300 may be a flat metal plate having a rectangular shape, a circular shape, a regular polygon shape, or the like, and is disposed on a side of the dual-polarized reflector 130 away from the second end. Further, in an embodiment, the reflector plate is connected to the dual-polarized reflector, i.e. the dual-polarized reflector is arranged on the reflector plate. Through setting up the reflecting plate, can assemble the reflection away through the reflecting plate with antenna backward wave beam to improve the front-to-back ratio of antenna effectively, also have certain effect to improving antenna gain and directionality.

Further, in an embodiment, the dual-polarized yagi antenna further includes a radome, the radome is a cavity structure with one end open and the other end closed, and the open end is fixed on the reflector. The radome can be provided with the antenna cover therein, avoiding the antenna to be disturbed by the environment outside the cover, for example, preventing external factors from damaging the overall structure of the antenna. Further, in one embodiment, the lens and the radome can be designed in an integrated manner, so that the lens can be conveniently detached while the radome is detached, and the mounting is also facilitated.

For convenience of description, the two ends of the axial rod of the antenna are not referred to as an a end and a B end, respectively, the dual-polarized director 110 is disposed at the a end, and the dual-polarized reflector 130 is disposed at the B end. For further detailed description of the dual-polarized yagi antenna, please refer to fig. 7 and 8, it should be noted that, although the position of the lens is not shown in fig. 7 and 8, the lens may be fixedly disposed at the second end (which will be referred to as end a hereinafter) of the axial rod of the antenna through a connecting member. The dual-polarized directors 110, the dual-polarized active oscillators 120 and the dual-polarized reflectors 130 are relatively independent and are sequentially arranged on the axial rod of the antenna from top to bottom, in the dual-polarized yagi antenna, the number of the dual-polarized directors 110 may be plural, and the lengths of the dual-polarized directors are different, the lengths of different dual-polarized directors 110 are gradually shortened in the direction from the end a to the end B, for example, four dual-polarized directors 110 are shown in fig. 7 and 8, and the length of the dual-polarized reflectors 130 is the longest, the dual-polarized directors 110 are slightly shorter than the dual-polarized reflectors 130, and the length of the dual-polarized active oscillators 120 is the shortest.

The dual-polarization director 110 comprises a first director and a second director which are orthogonally arranged, the first director and the second director are the same and are composed of a plurality of metal pieces arranged on the axial rod of the antenna, the metal pieces can be metal rods or metal strips, the metal pieces are perpendicular to the axial rod of the antenna, and the vertical feet are superposed with the middle points of the metal pieces, so that the two ends of the metal pieces are symmetrically arranged on the axial rod of the antenna. Meanwhile, the length relationship among the metal pieces is as follows: the lengths of the metal parts are different, and the length of each metal part is shorter than that of the adjacent metal part close to the dual-polarized active oscillator, namely the lengths of the metal parts are sequentially shortened along the direction from the end B to the end A; or the metal pieces can be divided into a plurality of groups along the direction from the end B to the end A, the length of the plurality of metal pieces in each group is the same, but the length of each group of metal pieces is shorter than that of the adjacent group of metal pieces close to the end B. Meanwhile, when the first director and the second director are orthogonally combined into the dual-polarized director, the metal pieces with the same length are also kept orthogonal and in the same plane, namely the metal pieces with the same length form a cross shape as shown in the figure and are arranged on the axial rod of the antenna.

The dual-polarized reflector 130 includes a first reflector and a second reflector which are orthogonally arranged, the first reflector and the second reflector are the same and respectively composed of a metal piece arranged on the antenna axial rod, the metal piece is perpendicular to the antenna axial rod, and the vertical foot coincides with the midpoint of the metal piece, so that 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 piece of metal of dual-polarized reflector 130 is longer than the length of any piece of metal of dual-polarized director 110.

In an embodiment, as shown in fig. 9, the dual-polarized active element 120 includes two identical single-polarized active elements that are orthogonally disposed, that is, a first active element and a second active element, and each of the two same single-polarized active elements is composed of two L-shaped metal elements that are symmetrically disposed on two sides of the antenna axial rod, one arm of each L-shaped metal element is a connecting arm 121 attached to the antenna axial rod 140, and a port 122 on the connecting arm 121 is connected to a corresponding metal element of the dual-polarized reflector 130, that is, one L-shaped metal element of the first active element is connected to a metal element on one side of the first reflector, the other L-shaped metal element of the first active element is connected to a metal element on the other side of the first reflector, and the second active element is also referred to as "active element. 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 element, which are arranged on the two 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 member can be adjusted according to the actual signal transceiving requirement, and in one embodiment, the angle between the connecting arm 121 and the functional arm 123 of the L-shaped metal member is 90 °.

Referring to fig. 10, the relationship between dual-polarized director 110, dual-polarized active element 120 and dual-polarized reflector 130 further comprises: the first active oscillator, the first reflector and the first director are positioned in the same plane, the second active oscillator, the second reflector and the second director are positioned in the same plane, and the view of the whole antenna from the A end to the B end is approximately in a cross shape.

Referring to fig. 11 and 12, in one embodiment, a feeding structure 200 is disposed on both the first active element and the second active element of the dual-polarized active element 130, and includes: a metal bump 201 as a feeding point, disposed on one of the functional arms 123a of the single-polarized active oscillator, for receiving feeding;

a port at one end of the coaxial line 202 is connected with the metal bump 201, and is used for transmitting current to the active oscillator to drive the antenna to work;

a support member 203, which is wrapped outside the coaxial line 202, and is used for isolating the coaxial line 202 from the external environment, and in one embodiment, the support member is made of teflon, which further plays an insulating role;

the metal shell 204 is disposed outside the supporting member 203, and a portion of the metal shell 204 is embedded in the other functional arm 123b without the metal bump 201, so as to ground the metal shell, so that the coaxial line 202 and the metal shell 204 form a potential difference.

Further, in one embodiment, the antenna further comprises a feeding input component, and the feeding input component is connected with the feeding structure on the first active element and the feeding structure on the second active element. The feed input component is used for inputting feed to the dual-polarized yagi antenna, so that the antenna can receive the feed to normally work.

Further, in an embodiment, with continuing reference to fig. 5 and 6, the feed input assembly includes a coaxial feed line 500, the coaxial feed line 500 connecting the feed structure on the first active element and the feed structure on the second active element hereinbefore. Specifically, the coaxial feed line 500 may be a 50-ohm coaxial line, and correspondingly, the input impedance of the dual-polarized yagi antenna is 50 ohms at this time. By adopting the coaxial feeder line to provide the feeding structure for feeding the antenna, an impedance converter is not needed, and the feeding cost is saved.

In another embodiment, referring to fig. 13 and 14, fig. 13 differs from fig. 5 in the structure of the feeding input component, and correspondingly, fig. 14 differs from fig. 6 in the structure of the feeding input component, and in fig. 13 and 14, the feeding input component includes a balun feeding device 600, and the balun feeding device 600 connects the feeding structure on the first active element and the feeding structure on the second active element in the above. The balun feed device 600 is a balun, and balanced feeding of the antenna element can be realized by the balun feed device 600.

In one embodiment, the antenna axial rod comprises a first feed aggregation plate, a second feed aggregation plate, a third feed aggregation plate and a fourth feed aggregation plate, the first feed aggregation plate, the second feed aggregation plate, the third feed aggregation plate and the fourth feed aggregation plate surround to form a cavity, and a dielectric strip is arranged in the cavity. It can be understood that the above dual-polarized reflector, dual-polarized active element and dual-polarized director are connected to the above feeding assembly board, so as to be fixed on the antenna axial rod, for example, the dual-polarized reflector may be connected to the four assembly boards, i.e. the first feeding assembly board, the second feeding assembly board, the third feeding assembly board and the fourth feeding assembly board, simultaneously, or may be connected to only the first feeding assembly board and the third feeding assembly board, so as to be fixed on the antenna axial rod, further, in an embodiment, the material of the dielectric strip may be an inorganic ceramic material or an organic dielectric material, and the cross-sectional area of the dielectric strip is equal to that of the cavity, so as to facilitate the fixing of the dielectric strip in the cavity and improve the working stability. By arranging the dielectric strips in the cavity, the Hansen-Wood's end fire condition can be realized, a strong end fire array is formed, the dielectric constants of all layers of oscillators are different, and the strong end fire array is formed, so that the purpose of improving the gain of the antenna is realized.

In an embodiment, referring to fig. 15, the band-pass filter 4 includes a first band-pass filter 41 and a second band-pass filter 42, the frequency shifter 3 includes a transmitting channel frequency shifter 31 and a receiving channel frequency shifter 32, the first band-pass filter 41 is connected to the wireless hot spot device 5, the transmitting channel frequency shifter 31 is connected to the first band-pass filter 41, the antenna switch device 2 is connected to the transmitting channel frequency shifter 31, the second band-pass filter 42 is connected to the wireless hot spot device 5, the receiving channel frequency shifter 32 is connected to the second band-pass filter 42, and the antenna switch device 2 is connected to the receiving channel frequency shifter 32.

Specifically, the WIFI signals in the multi-channel high-gain WIFI transceiver are transmitted and received through a signal transmitting channel and a signal receiving channel, respectively, the signal transmitting channel includes a first band-pass filter 41 and a transmitting channel frequency shifter 31, and the signal receiving channel includes a second band-pass 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 generated signal is generally high, only a signal of a specific frequency band is reserved after a high-frequency signal is transmitted to the first band-pass filter 41, and then the signal is transmitted to the first frequency shifter, the signal of the specific frequency band is shifted to a low frequency band by the first frequency shifter and then is transmitted to the antenna switch device 2, the high-gain antenna device 1 receives the signal transmitted by the antenna switch device 2 and then radiates to the space, and the transmission of the WIFI signal is completed. Since the signal transmitted by the high-gain antenna device 1 is a low-frequency band signal, the penetration capability is strong, and the signal coverage is large. When receiving signals, the high-gain antenna device 1 receives electromagnetic signals of a space and sends the electromagnetic signals to the second band-pass filter 42 through the antenna switch device 2, the second band-pass filter 42 filters out clutter in the signals and then sends the clutter to the wireless hotspot device 5, and the wireless hotspot device 5 processes the signals and then receives the WIFI signals.

In this embodiment, taking the example that the number of the dual-polarized yagi antennas 11 connected to each antenna switch device 2 is sequentially increased, the number of the 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, and 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, the two dual-polarized yagi antennas 11 are connected to the antenna switch device 2, the antenna switch device 2 is sequentially connected to the transmitting channel frequency shifter 31, the first band-pass filter 41 and the wireless hot spot device 5, and the antenna switch device 2 is further sequentially connected to the receiving channel frequency shifter 32, the second band-pass filter 42 and the wireless hot spot device 5 to form a signal transmitting channel and a signal receiving channel, respectively. Each antenna switch device 2 is independently provided with a set of frequency moving device 3 and a set of band-pass filtering device 4 to form a plurality of signal transmitting channels and signal receiving channels, so that multi-beam configuration can be realized, and the application range of the multi-channel high-gain WIFI transceiver can be expanded. Due to the fact that the number of the dual-polarized yagi antennas 11 connected to each antenna switch device 2 is different, the gain effect of each antenna switch device 2 is different, and specifically, the gain is higher when the number of the dual-polarized yagi antennas 11 is larger. During the in-service use, can put into use according to requirements such as signal strength and coverage quantity adjustment dual polarization yagi antenna 11 of corresponding quantity, be favorable to the rational utilization resource, improve multichannel high gain WIFI transceiver's reliability in utilization.

The types of the first band pass filter 41, the second band pass filter 42, the transmission channel frequency shifter 31, and the reception channel frequency shifter 32 are not exclusive, and in this embodiment, taking the high-band signal frequency as 2.4GHz and the low-band signal frequency as 700MHz as an example, both the first band pass filter 41 and the second band pass filter 42 are 2.4GHz band pass filters, which only allow signals with a frequency of 2.4GHz to pass through, and filter signals with other frequencies, thereby improving the quality of transmission signals. The transmission channel frequency shifter 31 is a 2.4GHz to 700MHz frequency shifter, converts a high-frequency signal with a frequency of 2.4GHz into a low-frequency signal with a frequency of 700MHz, and then transmits the low-frequency signal through the antenna switch device 2 by the high-gain antenna device 1, which is beneficial to improving the coverage of the signal. The receiving channel frequency shifter 32 is a 700MHz to 2.4GHz frequency shifter, converts a low-frequency signal with a frequency of 700MHz into a high-frequency signal with a frequency of 2.4GHz, and then sends the high-frequency signal to the second band-pass filter 42, the second band-pass filter 42 filters out signals with other frequencies and only retains signals with a frequency of 2.4GHz, and then sends the signals to the wireless hotspot device 5 for network conversion and sharing, which is beneficial to improving the working performance of WIFI signals. It is understood that the frequency of the high band signal is not limited to 2.4GHz, but may also be 3.5GHz, 5.8GHz or other frequencies, and the frequency of the low band signal is not limited to 700MHz, but may also be 400MHz, 800MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 3300MHz or other frequencies, as long as one skilled in the art can realize the purpose. The transmission and the reception of signals are realized by different lines, so that the mutual interference between a transmitting channel and a receiving channel can be reduced, and the performance of signal transmission is improved.

The working state switching of the receiving or transmitting of the WIFI signal can also be realized by the antenna switch device 2, the antenna switch device 2 includes a signal receiving circuit, a signal transmitting circuit and a switch, the 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 changeover switch is turned on with the signal transmission circuit, the antenna switching device 2 controls the high-gain antenna device 1 to be in a transmission state, when the changeover switch is turned on with the signal reception circuit, the antenna switching device 2 controls the high-gain antenna device 1 to be in a reception state, and when the changeover switch is in an open state, the high-gain antenna device 1 does not work and the device is in a shutdown state. The switch may be connected to the controller, and the transmission, reception, or shutdown operation of the high-gain antenna apparatus 1 may be switched according to a control signal sent by the controller, or the switch may be manually controlled, and the user manually switches the operation according to his or her own needs.

In an embodiment, referring to fig. 15, the multi-channel high-gain WIFI transceiver further includes a third band-pass filter 61, one end of the third band-pass filter 61 is connected to the transmission channel frequency shifter 31, and the other end is connected to the antenna switching device 2. The type of the third band-pass filter 61 is not unique, and for example, the high-band signal frequency is 2.4GHz, and the low-band signal frequency is 700MHz, the transmission channel frequency shifter 31 is a 2.4GHz to 700MHz frequency shifter, and can convert the high-frequency signal with the frequency of 2.4GHz into a low-frequency signal with the frequency of 700MHz and send the low-frequency signal to the third band-pass filter 61, and the third band-pass filter 61 is a 700MHz band-pass filter, so that it can be ensured that the signal sent to the antenna switching device 2 only includes the low-frequency signal with the frequency of 700MHz, and the purity of the signal is improved. It is understood that in other embodiments, the third band pass filter 61 may also be a band pass filter of other frequencies, and is determined by the frequency of the signal converted by the transmission channel frequency shifter 31 connected to the band pass filter, so as to ensure the frequency requirement of the signal.

In an embodiment, referring to fig. 15, the multi-channel high-gain WIFI transceiver further includes a transmitting channel amplifier 71 and a receiving channel amplifier 72, wherein one end of the transmitting channel amplifier 71 is connected to the transmitting channel frequency shifter 31, the other end of the transmitting channel amplifier 71 is connected to the third band-pass filter 61, one end of the receiving channel amplifier 72 is connected to the receiving channel frequency shifter 32, and the other end of the receiving channel amplifier 72 is connected to the antenna switching device 2. The transmission channel amplifier 71 and the reception channel amplifier 72 may amplify signals to improve reliability of signal transmission.

Specifically, the types of the transmission channel amplifier 71 and the reception channel amplifier 72 are not unique, for example, in this embodiment, the transmission channel amplifier 71 is a power amplifier, the reception 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 sufficiently large power to meet the requirement, and the amplified signal is radiated into the space by the high-gain antenna device 1 through the antenna switch device 2, thereby realizing sending of the WIFI signal. When receiving a WIFI signal, the high-gain antenna device 1 can sense an electromagnetic signal in a space and then send the electromagnetic signal 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 through the band-pass filter device 4 to be demodulated to obtain the WIFI signal, and the WIFI signal is received. It is understood that in other embodiments, the transmit channel amplifier 71 and the receive channel amplifier 72 may be other types of amplifiers, as deemed practicable by those skilled in the art.

For a better understanding of the above-described embodiments, reference will now be made in detail to two specific embodiments,

representing a dual polarized yagi antenna 11. In one embodiment, referring to fig. 16, a conventional WIFI AP (Access Point) (e.g., 2.4GHz) is used to transmit (receive) a signal through the dual-polarized yagi antenna 11 by frequency shifting to a low frequency band (e.g., 700MHz) suitable for large-amplitude coverage. In one embodiment, referring to fig. 17, the signals are amplified and then transmitted (received back) through the dual polarized yagi antenna 11 by frequency shifting to a lower frequency band (e.g., 700MHz) that is preferably covered by a large margin using a conventional WIFI AP (e.g., 2.4 GHz). The dual-polarized yagi antenna 11 is adopted to improve the integral gain of the antenna, the characteristic of good transmission characteristic of low-frequency signals is utilized to improve the coverage effect, and the dual-polarized yagi antenna is utilizedThe line high-gain characteristic solves the shortcoming that the existing WIFI transmission distance is short, integrates two advantages of dual-polarized yagi antenna and low-frequency band transmission, and can realize large-range coverage of WIFI.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A multi-channel high-gain WIFI transceiver is characterized by comprising a wireless hotspot device, a band-pass filter device, a frequency moving device, an antenna switch device and a high-gain antenna device, wherein the high-gain antenna device comprises a substrate and two or more than two dual-polarized yagi antennas, and each dual-polarized yagi antenna is arranged on the substrate; the number of the wireless hot spot devices, the number of the band-pass filtering devices, the number of the frequency moving devices and the number of the antenna switching devices are the same and are two or more, each band-pass filtering device is respectively connected with the corresponding wireless hot spot device and the corresponding frequency moving device, and each antenna switching device is respectively connected with the corresponding frequency moving device and the corresponding dual-polarized yagi antenna; the dual-polarized yagi antenna comprises a lens, an antenna axial rod, a dual-polarized reflector, a dual-polarized active oscillator and a dual-polarized director;

2. The multi-channel high-gain WIFI transceiver device of claim 1, wherein dual-polarized yagi antennas of different frequency bands are arranged on the substrate in a crossed manner.

3. The multi-channel high-gain WIFI transceiver device of claim 1, wherein the lens is a spherical lens.

4. The multi-channel high-gain WIFI transceiver device of claim 1, wherein the dual-polarized yagi antenna further comprises a reflector plate, and the reflector plate is disposed on a side of the dual-polarized reflector away from the second end.

5. The multi-channel high-gain WIFI transceiver device according to claim 4, wherein the dual-polarized yagi antenna further comprises an antenna housing, the antenna housing is of a cavity structure with one open end and the other closed end, and the open end is fixed on the reflector plate.

6. The multi-channel high-gain WIFI transceiver of claim 1, wherein the dual-polarized active element further comprises a feeding structure disposed on the first active element and a feeding structure disposed on the second active element, each of the feeding structures comprising:

the metal bump is arranged on one functional arm and used for receiving feed;

a coaxial line, one end port of which is connected with the metal bump and is used for transmitting current to the single-polarization active oscillator to drive the antenna to work;

the supporting piece is coated outside the coaxial line and used for isolating the coaxial line from the external environment;

and the metal shell is arranged outside the supporting piece, and meanwhile, one part of the metal shell is embedded into the functional arm without the metal lug.

7. The multi-channel high-gain WIFI transceiver device of claim 6, wherein the dual-polarized yagi antenna further comprises a feed input component, and the feed input component is connected with a feed structure on the first active element and a feed structure on the second active element.

8. The multi-channel high-gain WIFI transceiver device of claim 7, wherein the feeding input component comprises a coaxial feeding line, and the coaxial feeding line connects the feeding structure on the first active element and the feeding structure on the second active element.

9. The multi-channel high-gain WIFI transceiver device of claim 7, wherein the feeding input component comprises a balun feeding device, and the balun feeding device is connected with a feeding structure on the first active element and a feeding structure on the second active element.

10. The multi-channel high-gain WIFI transceiver device of claim 1, wherein the antenna axial rod comprises 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 surround to form a cavity, and a dielectric strip is arranged in the cavity.