CN109638411B - Dual-frequency dual-polarization reconfigurable intelligent WIFI antenna - Google Patents
Dual-frequency dual-polarization reconfigurable intelligent WIFI antenna Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H01Q1/00—Details of, or arrangements associated with, antennas
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- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
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- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
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- H—ELECTRICITY
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- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
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- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
- H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
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- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
- H01Q21/293—Combinations of different interacting antenna units for giving a desired directional characteristic one unit or more being an array of identical aerial elements
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- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
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Abstract
The invention provides a dual-frequency dual-polarization reconfigurable intelligent WIFI antenna, which comprises a positive N-surface body, N dual-frequency dual-polarization reconfigurable antenna units and an intelligent beam control circuit, wherein the N dual-frequency dual-polarization reconfigurable antenna units are embedded on the N surface of the positive N-surface body at equal intervals and are conformal with the positive N-surface body, the intelligent beam control circuit is positioned in an antenna array carrier of the positive N-surface body and is used for selecting whether any unit of the N dual-frequency dual-polarization reconfigurable antenna units works or not and which polarization mode to work, the intelligent beam control circuit dynamically detects the intensity of two frequency band signals received by a beam generated by the combined work of any number of antenna units and judges the direction of a user according to the signal intensity, and then the optimal working state of each antenna unit is selected. Multi-user orientations can be dynamically searched and tracked.
Description
Technical Field
The invention relates to the technical field of antennas for radio frequency and wireless communication, in particular to a dual-frequency dual-polarization reconfigurable intelligent WIFI antenna.
Background
The Wireless Local Area Network (WLAN) is inseparable from enterprise business and personal life, and as the network dependence of users is continuously enhanced and the demand for high-speed and ultra-wideband networks is continuously increased, the user experience requirements for wireless network use become higher and higher, and the traditional WLAN system with omni-directional coverage antenna is gradually difficult to meet the increasing experience requirements of users. With the continuous progress of technologies such as radio wave propagation, networking technology, antenna theory and the like in mobile communication and the continuous upgrade of modern digital signal processing algorithm and chip performance, theoretical and technical bases are laid for the research and design of the intelligent reconfigurable multi-antenna WLAN system with flexible beam pointing. The WLAN system with the intelligent reconfigurable multi-antenna can automatically identify user requests, generate space directional beams, intensively distribute energy to designated users, improve signal strength and action distance, and eliminate blind spots. For a plurality of users, the difference of the signal space characteristics of each user can be utilized, and a plurality of signals are simultaneously received and transmitted on the same channel by forming a plurality of beams without mutual interference, so that the utilization of radio frequency spectrum and the transmission of signals are more effective, the transmitting and receiving power can be reduced, and the energy consumption can be reduced. At present, a plurality of wireless communication equipment manufacturers have continuously released WLAN products with intelligent reconfigurable multi-antenna, wherein the products of Ruckus company and Xirrus company in the United states are leading in the industry. Domestic research on intelligent WLAN antenna systems starts from 2012 or so, and only a few high-tech companies such as Huashi have development capability due to high technical threshold, and the existing products do not compete with similar products abroad, and most of the products depend on imports. The problems of the products are that: (1) the design difficulty is high, and the development cycle is long. Unlike external antennas of conventional WLAN routers, the size, layout and isolation of the antennas are highly required because a plurality of antennas with different functions and types are placed in a compact space. Without a reference architecture and experience, the design, optimization and tuning of the antenna often takes a significant portion of the overall system development time. (2) The development cost is high. Unlike the traditional WLAN router which adopts a simple monopole array antenna architecture, the antenna adopts a plurality of groups of polarization and directional diagram reconfigurable antennas, an intelligent self-adaptive control circuit and algorithm, and a large number of signal control chips and processing chips, so that the development cost is far higher than that of the traditional WLAN antenna, and the popularization and application of the antenna are limited. (3) The system performance is limited. Although some existing products in China can realize the function of self-adaptive directional beams, the number and the gain of the directional beams are limited, the actual gain of part of the beams is only 2-3dBi, and the gain is not greatly different from the gain of 2dBi of the traditional omnidirectional antenna, so that signals are unstable when a user uses a WLAN, the user experience is general, and therefore, the performance is improved by improving the transmitting power of part of manufacturers, and the aim of saving energy is violated.
Disclosure of Invention
The invention aims to provide a dual-frequency dual-polarization reconfigurable intelligent WIFI antenna aiming at the problems. The invention designs a directional common-caliber dual-frequency dual-polarized reconfigurable antenna unit and realizes omnibearing coverage in the form of an annular array; the invention designs a high-efficiency beam forming network and a control circuit thereof, and realizes a low-cost intelligent beam control mode on the premise of not reducing the performance of an antenna.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a dual-frequency dual-polarization reconfigurable intelligent WIFI antenna comprises a regular N-face body, N dual-frequency dual-polarization reconfigurable antenna units and an intelligent beam control circuit, wherein N is larger than 3;
the positive N-face body is used as an antenna array carrier, N dual-frequency dual-polarized reconfigurable antenna units are embedded on the N faces of the positive N-face body at equal intervals and are conformal with the N faces, and the dual-frequency dual-polarized reconfigurable antenna units cover 2.4G frequency bands and 5G frequency bands; the dual-frequency dual-polarization reconfigurable antenna unit is a directional antenna, the maximum radiation direction of the dual-frequency dual-polarization reconfigurable antenna unit is along the normal direction of the dual-frequency dual-polarization reconfigurable antenna unit, the dual-frequency dual-polarization reconfigurable antenna unit is a dual-frequency dual-polarization common-aperture antenna, and the polarization mode of the dual-frequency dual-polarization reconfigurable antenna unit can be switched between two orthogonal linear;
the intelligent beam control circuit is positioned in the positive N-face antenna array carrier and is respectively connected with the N double-frequency dual-polarized reconfigurable antenna units through N interfaces; the intelligent beam control circuit is used for selecting whether any unit of the N double-frequency dual-polarization reconfigurable antenna units works or not and the polarization mode, dynamically detecting the strength of two frequency band signals received by beams generated under the combined work of any number of the antenna units, judging the direction of a user according to the signal strength, and then selecting the optimal working state of each antenna unit.
As a preferred mode, the dual-frequency dual-polarization reconfigurable antenna unit sequentially comprises a radiation layer, a feed layer and a reflection layer from top to bottom;
the upper surface of the radiation layer is provided with an annular radiation patch 5, and the lower surface of the radiation layer is provided with a square radiation patch 6; the square radiation patch 6 is arranged at the center below the annular radiation patch 5, and the annular radiation patch 5 and the square radiation patch 6 are radiation patches of a 2.4G frequency band and a 5G frequency band respectively;
the upper surface of the feed layer is a ground plane, a cross coupling gap 7 is formed in the ground plane, a Y-shaped feed line 8 is arranged on the lower surface of the feed layer, the Y-shaped feed line comprises two feed branches and a main feed line below the feed branches, the included angle between the two feed branches and the main feed line is +/-45 degrees, the included angle between the cross coupling gap 7 and the main feed line is +/-45 degrees, the two feed branches of the Y-shaped feed line are respectively perpendicular to the two gaps of the cross coupling gap, the feed branches excite the coupling gap perpendicular to the feed branches, and the two feed branches are connected with the main feed line through PIN diodes to achieve orthogonal linear polarization reconfigurable;
the lower surface of the reflective layer is a metallic ground surface and the reflective layer serves to reduce backward radiation while increasing the gain of forward radiation.
As a preferred mode, the intelligent beam control circuit comprises a radio frequency switch, an N-branch power synthesizer, a radio frequency amplifier, a radio frequency detector and an embedded microcontroller; the radio frequency switch selects any number of the N antenna units to be connected to the power synthesizer for power synthesis, then the signal is enhanced through the radio frequency amplifier, finally the signal intensity is detected through the radio frequency detector, and the signal intensity information is sampled and processed through the embedded microcontroller.
Preferably, the N dual-frequency dual-polarized reconfigurable antenna units are antenna units with the same structure.
As a preferable mode, the dual-frequency dual-polarization reconfigurable antenna unit realizes that the polarization mode can be switched between two orthogonal linear polarizations by controlling the PIN diode at the feed end of the dual-frequency dual-polarization reconfigurable antenna unit.
Preferably, N is 8. When the number of the antenna units is 8, the beam width of a single antenna unit is designed to be 45 degrees, omnidirectional coverage can be realized, the distance between the antenna units is reasonable, and the size of the whole array meets the conventional requirement.
As a preferred mode, the intelligent beam control circuit dynamically detects the intensities of two frequency band signals received by a beam generated by the combined operation of any number of antenna units, and the state corresponding to each antenna unit when the intensity is maximum is the optimal operating state. The intelligent beam control circuit selects some antenna units of the antenna array to work in a certain linear polarization mode, the signal intensity of two frequency bands received by the antenna array is detected in the state, the intensity of the received signal is scanned and detected by quickly changing the working state of the antenna units of the antenna array, when the strongest received signal is finally found, the working state of the antenna array at the moment is determined to be the best, and the radiation beam of the antenna array is directed to a user in the best working state.
The invention has the beneficial effects that: (1) according to the invention, the dual-frequency dual-polarization reconfigurable antenna unit is designed on one caliber, so that the reconfigurable antenna unit not only covers the required 2.4G frequency band and 5G frequency band, but also can be switched between two orthogonal linear polarizations, thus the volume of the antenna unit is effectively reduced, and the number of the required antenna units is also reduced. In addition, the isolation between the antenna elements is good. (2) The N directional dual-frequency dual-polarization reconfigurable antenna units form an array in an annular form, so that the high-gain effect can be achieved in the specific direction of the antenna, and the omnidirectional coverage can be realized. (3) The intelligent beam control circuit consists of modules such as a radio frequency switch, an eight-branch power divider/synthesizer, a radio frequency amplifier, a radio frequency detector, an embedded microcontroller and the like, avoids expensive digital signal processing chips and complex self-adaptive intelligent algorithms, effectively reduces the cost and the design difficulty, has higher practicability and controllability, and meets the trend requirements of commercial development. (4) The invention judges and selects the best working state of the antenna array by dynamically detecting the strength of two frequency band signals received by the state formed by combining any antenna units, and can dynamically search and track the multi-user direction.
Drawings
Fig. 1 is an array schematic diagram of a dual-frequency dual-polarization reconfigurable intelligent WIFI antenna.
Fig. 2 is a schematic diagram of an antenna unit of the dual-frequency dual-polarization reconfigurable intelligent WIFI antenna.
Fig. 3 is a top view of the uppermost layer of the antenna unit of the present invention.
Fig. 4 is a top view of an intermediate layer of the antenna element of the present invention.
Fig. 5 is a top view of the lowermost layer of the antenna element of the present invention.
Fig. 6 is a circuit block diagram of the intelligent beam steering circuit of the present invention.
Fig. 7 is a directional diagram of ± 45 ° linear polarization of the 2.4G frequency band of the antenna unit according to the present invention.
Fig. 8 shows a ± 45 ° linearly polarized directional diagram of the G band of the antenna unit 5 according to the present invention.
Fig. 9 is an S parameter diagram of a 2.4G frequency band of the dual-frequency dual-polarization reconfigurable intelligent WIFI antenna.
Fig. 10 is an S parameter diagram of a 5G frequency band of the dual-frequency dual-polarized reconfigurable intelligent WIFI antenna.
Fig. 11 is a directional diagram of the antenna array of the present invention in which each antenna unit operates individually in the 2.4G frequency band.
Fig. 12 is a diagram of the independent operation of each antenna unit in the frequency band of the antenna array 5G according to the present invention.
Fig. 13 is a directional diagram of the operation of two adjacent antenna units in the 2.4G frequency band of the antenna array according to the present invention.
Fig. 14 is a directional diagram of the operation of two adjacent antenna units in the frequency band of the antenna array 5G according to the present invention.
Fig. 15 is a directional diagram of the operation of any line unit under the 2.4G frequency band of the antenna array of the present invention.
Fig. 16 is a directional diagram of the operation of any line unit under the frequency band of the antenna array 5G of the present invention.
The reference numbers in the figures illustrate:
the reconfigurable antenna comprises eight double-frequency dual-polarization reconfigurable antenna units 1, a radiation layer 2, a feed layer 3, a reflection layer 4, an annular radiation patch 5, a square radiation patch 6, a cross coupling gap 7 and a Y-shaped feeder line 8.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Fig. 1 shows an array schematic diagram of a dual-frequency dual-polarization reconfigurable intelligent WIFI antenna, which comprises an octahedron, eight dual-frequency dual-polarization reconfigurable antenna units 1 and an intelligent beam control circuit;
the regular octahedron is used as an antenna array carrier, eight dual-frequency dual-polarization reconfigurable antenna units are embedded on eight surfaces of the regular octahedron at equal intervals and are conformal with the eight surfaces, and the dual-frequency dual-polarization reconfigurable antenna units cover 2.4G frequency bands and 5G frequency bands; the dual-frequency dual-polarization reconfigurable antenna unit is a directional antenna, the maximum radiation direction of the dual-frequency dual-polarization reconfigurable antenna unit is along the normal direction of the dual-frequency dual-polarization reconfigurable antenna unit, the dual-frequency dual-polarization reconfigurable antenna unit is a dual-frequency dual-polarization common-aperture antenna, and the polarization mode of the dual-frequency dual-polarization reconfigurable antenna unit can be switched between two orthogonal linear; the eight double-frequency dual-polarized reconfigurable antenna units are antenna units with the same structure. The dual-frequency dual-polarization reconfigurable antenna unit realizes that the polarization mode can be switched between two orthogonal linear polarizations by controlling the PIN diode at the feed end of the dual-frequency dual-polarization reconfigurable antenna unit. When the number of the antenna units is eight, the beam width of a single antenna unit is designed to be 45 degrees, omnidirectional coverage can be realized, the distance between the antenna units is reasonable, and the size of the whole array meets the conventional requirement.
The intelligent beam control circuit is positioned in the octahedral antenna array carrier and is respectively connected with the eight double-frequency dual-polarized reconfigurable antenna units through eight interfaces; the intelligent beam control circuit is used for selecting whether any unit of the eight double-frequency dual-polarized reconfigurable antenna units works or not and the polarization mode of the unit, dynamically detecting the strength of two frequency band signals received by beams generated under the combined work of any number of antenna units, judging the direction of a user according to the signal strength, and then selecting the optimal working state of each antenna unit.
As shown in fig. 2, the dual-frequency dual-polarized reconfigurable antenna unit sequentially comprises a radiation layer 2, a feed layer 3 and a reflection layer 4 from top to bottom;
as shown in fig. 3, the upper surface of the radiation layer is an annular radiation patch 5, and the lower surface is a square radiation patch 6; the square radiation patch 6 is arranged at the center below the annular radiation patch 5, and the annular radiation patch 5 and the square radiation patch 6 are radiation patches of a 2.4G frequency band and a 5G frequency band respectively;
as shown in fig. 4, the upper surface of the feed layer is a ground plane, a cross coupling gap 7 is formed in the ground plane, a Y-shaped feed line 8 is arranged on the lower surface of the feed layer, the Y-shaped feed line includes two feed branches and a main feed line below the feed branches, an included angle between the two feed branches and the main feed line is ± 45 °, an included angle between the cross coupling gap 7 and the main feed line is ± 45 °, the two feed branches of the Y-shaped feed line are respectively perpendicular to the two gaps of the cross coupling gap, the feed branches excite the coupling gap perpendicular to the feed branches, and the two feed branches are connected with the main feed line by using PIN diodes to implement orthogonal linear polarization reconfiguration;
as shown in fig. 5, the lower surface of the reflective layer is a metallic ground surface, and the reflective layer serves to reduce backward radiation while increasing the gain of forward radiation.
The intelligent beam control circuit comprises a radio frequency switch, an N-channel power synthesizer, a radio frequency amplifier, a radio frequency detector and an embedded microcontroller; the radio frequency switch selects any number of the eight antenna units to be connected to the power synthesizer for power synthesis, then the signal is enhanced through the radio frequency amplifier, finally the signal intensity is detected through the radio frequency detector, and the signal intensity information is sampled and processed through the embedded microcontroller.
When the intelligent beam control circuit selects the optimal working state of each antenna unit, the corresponding antenna working state when the signal intensity is maximum is the optimal working state. The intelligent beam control circuit enables a plurality of antenna units to work in a linear polarization mode, the signal intensity of two frequency bands received by the antenna array is detected in the state, the detection signal intensity is scanned by continuously changing the working state of the antenna array, when the strongest received signal is finally found, the working state of the antenna array at the moment is determined to be the best, and the radiation beam of the antenna array is directed to a user in the best working state.
Fig. 6 shows a block circuit diagram of an intelligent beam steering circuit of the present invention. As shown in the circuit block diagram, after low noise amplification, signals obtained from eight antenna interfaces can be selectively switched into an one-to-eight power combiner by a single-pole double-throw radio frequency switch for power combining. Then, the single-pole double-throw radio frequency switch is used for dividing the signal into a 2.4G frequency band amplification detection link and a 5G frequency band amplification detection link. Therefore, each antenna unit scans all directions in the form of a radiation pattern formed by a single antenna unit or a plurality of antenna units through the MCU control circuit to judge the position of the user so as to track the user in the best radiation mode.
Fig. 7 and 8 show ± 45 of the 2.4G band and the 5G band of the antenna unit according to the present invention. A linearly polarized pattern. The gain of the antenna element is above 7 dBi. Since the cross coupling slot of the feed layer is ± 45. So that + -45 is excited. Linear polarization, one of which can be selected by a PIN diode to operate.
FIGS. 9 and 10 show plots of S11 and S23 parameters for antenna elements in an antenna array. Because the antenna elements are identical in structure and symmetrically arranged, the parameters of the antenna arrays Sii are substantially the same and the parameters of Sij are also substantially the same (i, j represents the antenna element port, i is not equal to j). The reflection coefficients of the antenna units in the required two frequency bands are smaller than-12 dB, the isolation is larger than 25dB, and the matching effect and the isolation effect achieve good effects.
Fig. 11 and 12 show the radiation patterns of the antenna array for omni-directional scanning when the antenna unit arrays work alone in the 2.4G frequency band and the 5G frequency band, and the radiation patterns of two frequency bands obtained by the antenna array shown in fig. 13 and 14 when two adjacent antenna units work together. The antenna array can realize 360-degree scanning with a gain of about 8dBi according to the four graphs. Fig. 15 and 16 show the pattern states formed when any plurality of antenna elements of the antenna array are operated, and it can be seen that the antenna array can radiate in a plurality of specific patterns.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a dual-frenquency double polarization reconfigurable intelligence WIFI antenna which characterized in that: the dual-frequency dual-polarized reconfigurable antenna comprises a regular N-face body, N dual-frequency dual-polarized reconfigurable antenna units and an intelligent beam control circuit, wherein N is more than 3;
the positive N-face body is used as an antenna array carrier, N dual-frequency dual-polarized reconfigurable antenna units are embedded on the N faces of the positive N-face body at equal intervals and are conformal with the N faces, and the dual-frequency dual-polarized reconfigurable antenna units cover 2.4G frequency bands and 5G frequency bands; the dual-frequency dual-polarization reconfigurable antenna unit is a directional antenna, the maximum radiation direction of the dual-frequency dual-polarization reconfigurable antenna unit is along the normal direction of the dual-frequency dual-polarization reconfigurable antenna unit, the dual-frequency dual-polarization reconfigurable antenna unit is a dual-frequency dual-polarization common-aperture antenna, and the polarization mode of the dual-frequency dual-polarization reconfigurable antenna unit can be switched between two orthogonal linear;
the intelligent beam control circuit is positioned in the positive N-face antenna array carrier and is respectively connected with the N double-frequency dual-polarized reconfigurable antenna units through N interfaces; the intelligent beam control circuit is used for selecting whether any unit of the N double-frequency dual-polarization reconfigurable antenna units works or not and in which polarization mode to work, dynamically detecting the intensity of two frequency band signals received by beams generated under the combined work of any number of antenna units, judging the direction of a user according to the signal intensity, and then selecting the optimal working state of each antenna unit;
the dual-frequency dual-polarization reconfigurable antenna unit sequentially comprises a radiation layer, a feed layer and a reflection layer from top to bottom;
the upper surface of the radiation layer is provided with an annular radiation patch (5), and the lower surface of the radiation layer is provided with a square radiation patch (6); the square radiation patch (6) is arranged in the center below the annular radiation patch (5), and the annular radiation patch (5) and the square radiation patch (6) are radiation patches of a 2.4G frequency band and a 5G frequency band respectively;
the upper surface of the feed layer is a ground plane, a cross coupling gap (7) is formed in the ground plane, a Y-shaped feed line (8) is arranged on the lower surface of the feed layer, the Y-shaped feed line comprises two feed branches and a main feed line below the feed branches, the included angle between the two feed branches and the main feed line is +/-45 degrees, the included angle between the cross coupling gap (7) and the main feed line is +/-45 degrees, the two feed branches of the Y-shaped feed line are respectively perpendicular to the two gaps of the cross coupling gap, the feed branches excite the coupling gap perpendicular to the feed branches, and the two feed branches are connected with the main feed line through PIN diodes to achieve orthogonal linear polarization reconfiguration;
the lower surface of the reflective layer is a metallic ground surface and the reflective layer serves to reduce backward radiation while increasing the gain of forward radiation.
2. The dual-frequency dual-polarization reconfigurable intelligent WIFI antenna of claim 1, wherein: the intelligent beam control circuit comprises a radio frequency switch, an N-channel power synthesizer, a radio frequency amplifier, a radio frequency detector and an embedded microcontroller; the radio frequency switch selects any number of the N antenna units to be connected to the power synthesizer for power synthesis, then the signal is enhanced through the radio frequency amplifier, finally the signal intensity is detected through the radio frequency detector, and the signal intensity information is sampled and processed through the embedded microcontroller.
3. The dual-frequency dual-polarization reconfigurable intelligent WIFI antenna of claim 1, wherein: the N double-frequency dual-polarization reconfigurable antenna units are antenna units with the same structure.
4. The dual-frequency dual-polarization reconfigurable intelligent WIFI antenna of claim 1, wherein: the dual-frequency dual-polarization reconfigurable antenna unit realizes that the polarization mode can be switched between two orthogonal linear polarizations by controlling the PIN diode at the feed end of the dual-frequency dual-polarization reconfigurable antenna unit.
5. The dual-frequency dual-polarization reconfigurable intelligent WIFI antenna of claim 1, wherein: and N is 8.
6. The dual-frequency dual-polarization reconfigurable intelligent WIFI antenna of claim 1, wherein: the intelligent beam control circuit dynamically detects the intensity of two frequency band signals received by the beam generated under the combined work of any number of antenna units, and the state corresponding to each antenna unit when the intensity is maximum is the optimal working state.
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| CN110278017B (en) * | 2019-06-27 | 2023-07-25 | 广东工业大学 | Multi-antenna wireless energy transmission system and method based on intelligent reflecting surface |
| CN110350306B (en) * | 2019-07-10 | 2021-01-08 | 维沃移动通信有限公司 | Antenna structure, terminal and control method |
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