Novel reconfigurable intelligent surface antenna and control circuit

Abstract

The utility model discloses a novel reconfigurable intelligent surface antenna and a control circuit thereof. The device comprises a reconfigurable intelligent surface antenna board and a reconfigurable intelligent surface control board. The antenna of the antenna board adopts a fan-shaped plane design, has a relatively high frequency band width, and is suitable for a UWB (Ultra Wideband) communication system. The phase change of the antenna unit (CELL) is controlled by using the PIN diode, so that the flexible adjustment of electromagnetic waves is realized. The control board is provided with a plurality of IO expansion chips (the model is MCP23S18T-E / MJ), and the IO expansion chips are used for generating and managing required electric signals and controlling phase changes of all units on the antenna board. The board-to-board connector is used for fixing the antenna board and the control board and realizing electric signal transmission, the FPC socket is used for cascading the control board to expand the number of antennas, the Type-C interface and the 5VDC seat are used for supplying power, and the pin header is used for performing SPI communication with the processor. The LED lamp is used for debugging and testing, when the PIN diode works, the LED lamp emits light, and otherwise, the LED lamp is extinguished. According to the design, a modularized, simplified and extensible antenna system is realized, and the antenna system has relatively high flexibility and control precision and is suitable for various communication scenes.

Description

Technical Field

[0001] This patent relates to a new type of reconfigurable smart surface antenna and its control circuit. The device includes a reconfigurable smart surface antenna board and a reconfigurable smart surface control board. The antenna array on the antenna board is a multi-antenna array of a reconfigurable smart surface based on PIN diodes. Background Art

[0002] In existing communication systems, the fixed structure and operating frequency band of antennas limit their flexibility and adaptability, and they cannot effectively cope with complex and changing communication environments and needs. To solve this problem, reconfigurable smart surface technology has emerged. Reconfigurable smart surface is a technology that adjusts the propagation characteristics of electromagnetic waves by controlling the microstructure on its surface. It can achieve real-time adjustment of antenna radiation characteristics, thereby improving the performance and flexibility of communication systems.

[0003] At present, a variety of reconfigurable smart surface designs have been proposed, including reconfigurable smart surfaces based on variable capacitors and reconfigurable smart surfaces based on RF switches. Among them, electronic reconfigurable surfaces based on PIN diodes have the advantages of fast adjustment speed and low power consumption, and have gradually become one of the research hotspots.

[0004] However, the existing reconfigurable smart surface antenna system still has some problems, such as complex control circuit and low adjustment accuracy. Therefore, it is necessary to propose a new type of reconfigurable smart surface antenna and its control circuit to meet the higher requirements of communication system for flexibility and performance.

[0005] This new type of reconfigurable smart surface antenna and its control circuit can be widely used in 5G and future communication systems. For example, in mobile communication base stations, by adjusting the radiation characteristics of the antenna, the signal coverage and quality can be optimized, and the communication efficiency can be improved; in satellite communication systems, it can be used for ground stations and satellite antennas to achieve directional transmission of signals to different regions and users, and improve the reliability of communication signals; it can also be used for sensor nodes in the Internet of Things to adjust the radiation pattern of the antenna according to the environment and needs, and improve the communication efficiency between sensor nodes; in addition, this technology can also be applied to wireless coverage systems inside buildings, by adjusting the radiation direction and range of the antenna, to achieve uniform coverage of indoor communication signals and improve communication quality. Therefore, this reconfigurable smart surface antenna and its control circuit have important application prospects in improving the performance and flexibility of communication systems. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a novel reconfigurable intelligent surface antenna and a control circuit.

[0007] The utility model proposes a method of separating a reconfigurable smart surface antenna board from a reconfigurable smart surface control board, and a board-to-board connector is used to realize electrical connection between the two boards. The antenna of the antenna board adopts a fan-shaped plane design to meet the high bandwidth requirements of the UWB frequency band. The control board adopts an FPC socket, and through a simple control circuit design, any number of control boards can be connected to achieve a cascade effect. This innovative design makes the reconfigurable smart surface antenna system more flexible and scalable, and has the ability to meet different communication needs.

[0008] The antenna board is provided with a phase adjustment unit (CELL), a sector antenna and a board-to-board connector connected to the CELL; the control board is provided with an expansion chip and a control socket connected to the expansion chip, several cascade sockets, a power supply unit and several board-to-board connectors;

[0009] As one of the preferred embodiments of the utility model, the antenna board is provided with 64 phase adjustment units, 64 sector antennas and 4 board-to-board connectors laid flat thereon;

[0010] 64 sector antennas form an 8*8 array;

[0011] The input end of the phase adjustment unit is connected to the board connector, and the output end is connected to the GND end of the sector antenna;

[0012] The four board-to-board connectors are evenly distributed around the center of the antenna board.

[0013] As one of the preferred embodiments of the utility model, the control board is provided with 5 expansion chips laid flat thereon, 4 cascade sockets, 1 control socket, 4 board-to-board connectors, TYPE-C interface, 5V DC socket, and LED lamp;

[0014] The expansion chips 1-4 are evenly distributed around the center of the control board, and the expansion chip 5 is distributed in the center of the control board;

[0015] The four cascade sockets are evenly distributed around the control board, and the control socket is distributed in the center of the control board in a cross shape.

[0016] The four board-to-board connectors are evenly distributed around the center of the control board, in the same position as the antenna board.

[0017] The TYPE-C interface and 5V DC socket are both located under the control board.

[0018] As one of the preferred embodiments of the utility model, the phase adjustment unit includes a PIN diode and a board-to-board connector. The board-to-board connector has a DC1-DC64 output terminal. The PIN diode has an input terminal DC Control and an output terminal GND. The input terminal of the PIN diode is connected to the sector antenna, and the other end is connected to GND. The corresponding sector antennas are respectively connected to the board-to-board connector output terminals DC1-64. The voltage change of the PIN diode is used to generate two phase changes with a phase difference of 180°, which are 0° and 180° respectively.

[0019] As one of the preferred embodiments of the present utility model, the extension chip 1-4 is used to control the phase adjustment unit, and the extension chip 5 is used to control the cascade of the extension chip 1-4 and the next-level control board.

[0020] As one of the preferred embodiments of the utility model, the cascade sockets are an upper cascade socket, a lower cascade socket, a left cascade socket, and a right cascade socket, and the control socket is a central control socket;

[0021] The upper cascade socket, the lower cascade socket, the left cascade socket, and the right cascade socket are used to connect the control sockets of the next-level control board;

[0022] The central control socket is used to connect the cascade socket of the processor or the next level control board;

[0023] As one of the preferred embodiments of the utility model, a novel reconfigurable smart surface antenna and control circuit also includes an LED indicator light arranged on a control board and connected to the expansion chip and the sector antenna, for indicating whether the phase adjustment unit is working normally.

[0024] As one of the preferred embodiments of the present utility model, the model of the expansion chip is set to MCP23S18T-E / MJ.

[0025] Beneficial effects of the utility model:

[0026] 1. The antenna structure adopts a fan-shaped planar design, which makes the antenna have a higher bandwidth and is suitable for application scenarios that require broadband transmission, such as UWB communication systems.

[0027] 2. By controlling the working state of the PIN diode, the antenna phase can be flexibly adjusted to adapt to different communication scenarios and requirements, thereby improving the performance and reliability of the communication system.

[0028] 3. Separate the antenna board from the control board and use a board-to-board connector to achieve electrical signal transmission, so that the functions of the antenna board and the control board are modularized, which is convenient for manufacturing, maintenance and upgrading.

[0029] 4. The antenna board adopts coaxial feeding method, which does not require additional feeding line layout, reducing manufacturing cost and system complexity.

[0030] 5. The control panel adopts control socket and cascade socket design, which can realize the cascading of any number of control panels through simple control circuit, enhance the scalability of the system and meet the application requirements of different scales.

[0031] 6. The MCP23S18T-E / MJ IO expansion chip is used to achieve precise control and management of 64 antenna units (CELL1 to CELL64), improving the system's adjustment accuracy and response speed.

[0032] In summary, the reconfigurable smart surface antenna and its control circuit have significant advantages in broadband performance, flexibility, modular design, structural simplification, scalability and efficient control, which are helpful to improve the overall performance and application scope of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 It is a schematic diagram of the shape of a sector antenna;

[0035] Figure 2 Schematic diagram and dimensions of the antenna radiation surface;

[0036] Figure 3 The schematic diagram and dimensions of the antenna ground plane;

[0037] Figure 4 It is a schematic diagram of the structure of a sector antenna;

[0038] Figure 5 Design for reconfigurable smart surface antenna panel CELL;

[0039] Figure 6 is a layout diagram of the antenna board;

[0040] Figure 7 Pin definition for the board-to-board connector;

[0041] Figure 8 It is a schematic diagram of electrical signal transmission of board-to-board connector;

[0042] Fig. 9 It is a schematic diagram of the board-to-board connector structure;

[0043] Fig.10 This is the layout diagram of the control panel;

[0044] Fig.11 Schematic diagram of the overall circuit design structure of the reconfigurable smart surface;

[0045] Fig.12Schematic diagram of a reconfigurable smart surface device;

[0046] Fig.13 Pin definition for expansion chip 1;

[0047] Fig.14 Pin definition for expansion chip 5;

[0048] Fig.15 It is a schematic diagram of the control circuit structure of the control board;

[0049] Fig.16 Design diagram for cascade control circuit;

[0050] Fig.17 This is a schematic diagram of the control board cascade;

[0051] Fig.18 It is a 32*32 antenna array reconfigurable smart surface device; DETAILED DESCRIPTION

[0052] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0053] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0054] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0055] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0056] Reference Figures 1 to 18 , a novel reconfigurable smart surface antenna and control circuit, including a reconfigurable smart surface antenna board and a reconfigurable smart surface control board;

[0057] The antenna board is provided with a phase adjustment unit (CELL) and a board-to-board connector connected to the CELL; the control board is provided with an expansion chip and a control socket connected to the expansion chip, several cascade sockets, a power supply unit and several board-to-board connectors;

[0058] The board-to-board connector is used to fix the antenna board and the control board and realize the transmission of electrical signals;

[0059] The phase adjustment unit is used to adjust the phase changes of the sector antenna at different angles;

[0060] The control socket of the control board is connected to the processor via a Dupont line or a cascade socket on another control board, so that several control boards can be cascaded;

[0061] 1. The antenna adopts a fan-shaped structure design and uses coaxial feeding, so there is no need to consider the layout of the feeder line (such as Figure 1 The structure of the antenna (as shown) Figure 2 As shown in Figure 1, an isosceles trapezoidal metal is printed on both sides of the FR4 substrate, and two symmetrical squares are etched on the radiating surface (as shown in Figure 1). Figure 3 ), and is achieved by etching two semicircular patterns on the ground plane (as shown Figure 4 This design enables the antenna to have a higher bandwidth and radiation efficiency, and is suitable for application scenarios that require broadband transmission, such as UWB communication systems.

[0062] 2. The reconfigurable smart surface antenna board includes: 8×8 reconfigurable smart surface CELL (to change the antenna phase), board-to-board connector (for fixing the antenna board and control board and realizing electrical signal transmission). In the CELL design, the PIN diode is connected to the sector antenna to control the reflection phase of the sector antenna in the required UWB frequency band. One end of the PIN diode is grounded, and the other end is connected to the DC bias voltage through the feed point and bias line of the sector antenna. The working state of the PIN diode is controlled by changing the size of the DC bias voltage to achieve the purpose of controlling the phase change of the antenna (the design of the reconfigurable smart surface CELL is as follows: Figure 5 shown).

[0063] 3. The 64 cells on the antenna board are divided into 4 blocks (such as Figure 6 As shown), board-to-board connector 1 is responsible for transmitting CELL1-CELL16 electrical signals (board-to-board connector pin diagram as shown Figure 7 As shown, the schematic diagram of the board-to-board connector electrical signal transmission is as follows Figure 8 As shown), board-to-board connector 2 is responsible for transmitting CELL17-CELL32 electrical signals, board-to-board connector 3 is responsible for transmitting CELL33-CELL47 electrical signals, and board-to-board connector 4 is responsible for transmitting CELL49-CELL64 electrical signals (the schematic diagram of the board-to-board connector structure is as shown Fig. 9 As shown in Figure 1, the antenna on the reconfigurable smart surface antenna board uses a fan-shaped antenna structure. The antenna board achieves antenna phase adjustment by controlling the PIN diode. The antenna board uses a coaxial feeding method without considering the feed line design. It has a simple structure and a wide bandwidth, and can be flexibly adjusted to adapt to different communication scenarios.

[0064] 4. The reconfigurable smart surface control board includes: IO expansion chip (used to generate electrical signals to control CELL phase changes), board-to-board connector (used to fix the antenna board and control board and realize electrical signal transmission), FCP socket (used to cascade control boards and expand the number of antennas), TYPE-C interface and 5V DC socket (for power supply), pin header (for SPI communication between the control board and the processor), and LED light (for debugging). The overall design of the reconfigurable smart surface control board is as follows: Fig.10 As shown, the reconfigurable smart surface control board generates a DC CONTROL signal (DC1-DC64), and one end of the PIN diode is connected to the antenna (Antenna) and the other end is grounded. By adding a specific resistor R and LED light to generate different DC bias voltages, when the PIN diode is in the on state, the LED light will light up, otherwise it will go out for debugging. The PIN diode has an operating voltage of 0.3V-0.7V and a cut-off voltage of 0V. The PIN diode is controlled by different level states to be in the on state or the cut-off state. By changing the working state of the PIN diode, the phase of the Antenna can be changed to produce a 180° phase change (such as Fig.11 The antenna board and the control board are connected through the board-to-board connector. Fig.12 In addition, a matching circuit is connected between the board connector output terminal DC1-64 and the sector antenna to adjust the impedance of the sector antenna to ensure the matching of signal transmission. The matching circuit can be designed as an LC matching network or other types of impedance matching circuits according to actual needs to achieve impedance matching between the antenna and the signal source.

[0065] 5. The IO expansion chip is preferably MCP23S18T-E / MJ model, which can generate the required electrical signals. There are five IO expansion chips on the control board, of which IO expansion chips 1 to 4 are used to control the phase changes of the 64 cells (CELL1 to CELL64) of the antenna board to generate electrical signals from DC1 to DC64. In this way, only 4 IO ports (CS, SCK, MISO, MOSI) are needed to expand 16 IO ports (DC1-DC16). The pin structures of IO expansion chips 1-4 are similar, and only IO expansion chip 1 is drawn (the pin diagram of expansion chip 1 is shown in the figure). Fig.13 In addition, the IO expansion chip 5 is used to control the IO expansion chips 1 to 4 and the cascade control board, wherein CS1, CS2, CS3, CS4 are chip select pins of the expansion chips 1-4, respectively, and UP_CS, DOWN_CS, LEFT_CS, RIGHT_CS are pins corresponding to the cascade socket (the pin diagram of the expansion chip 5 is shown in Fig.14 shown).

[0066] 6. The overall control circuit of the control board is as follows Fig.15 As shown, IO expansion chip 1 is electrically connected to board-to-board connector 1, and transmits DC1-DC16 electrical signals generated by IO expansion chip 1 to the antenna board; IO expansion chip 2 is electrically connected to board-to-board connector 2, and transmits DC17-DC32 electrical signals generated by IO expansion chip 2 to the antenna board; IO expansion chip 3 is electrically connected to board-to-board connector 3, and transmits DC33-DC48 electrical signals generated by IO expansion chip 3 to the antenna board; IO expansion chip 4 is electrically connected to board-to-board connector 4, and transmits DC49-DC64 electrical signals generated by IO expansion chip 4 to the antenna board. The IO expansion chip generates CS1-4 electrical signals to control IO expansion chips 1-4 respectively.

[0067] 7. Cascade principle: The main control board is connected to the processor through Dupont wires and pin headers to achieve SPI communication. The IO expansion chip 5 on the main control board generates four electrical signals, namely UP_CS, DOWN_CS, LEFT_CS, and RIGHT_CS. These four electrical signals are respectively connected to the upper FPC, lower FPC, left FPC, and right FPC of the control board (such as Fig.16shown).

[0068] 8. The upper FPC of the main control board is connected to the center FPC of control board 1 with a flexible flat cable, the left FPC is connected to the center FPC of control board 2 with a flexible flat cable, the right FPC is connected to the center FPC of control board 3 with a flexible flat cable, and the lower FPC is connected to the center FPC of control board 4 with a flexible flat cable (such as Fig.17 As shown). The four signal lines UP_CS, DOWN_CS, LEFT_CS, and RIGHT_CS correspond to the CS signal lines of the central FPC socket of each antenna board. By selecting the four signals UP_CS, DOWN_CS, LEFT_CS, and RIGHT_CS, the expansion chip of the next-level control board can be selected. The expansion chip of the next-level control board can configure the phase of the antenna and select the next-level control board. This method can realize any number of reconfigurable smart surface antenna arrays, such as a reconfigurable smart surface device with a 32×32 antenna array (such as Fig.18 shown).

[0069] 9. This utility model adopts the following technical solutions:

[0070] The utility model proposes a method of separating a reconfigurable smart surface antenna board from a reconfigurable smart surface control board, and a board-to-board connector is used to realize electrical connection between the two boards. The antenna of the antenna board adopts a fan-shaped plane design to meet the high bandwidth requirements of the UWB frequency band. The control board adopts an FPC socket, and through a simple control circuit design, any number of antenna boards can be connected to achieve a cascade effect. This innovative design makes the reconfigurable smart surface antenna system more flexible and scalable, and has the ability to meet different communication needs.

[0071] The antenna board is provided with a phase adjustment unit (CELL) and a board-to-board connector connected to the CELL; the control board is provided with an expansion chip and a control socket connected to the expansion chip, several cascade sockets, a power supply unit and several board-to-board connectors;

[0072] The antenna board is provided with 64 phase adjustment units, 64 sector antennas and 4 board-to-board connectors laid flat on it;

[0073] 64 sector antennas form an 8*8 array;

[0074] The input end of the phase adjustment unit is connected to the board connector, and the output end is connected to the GND end of the sector antenna;

[0075] The four board-to-board connectors are evenly distributed around the center of the antenna board.

[0076] The control board is equipped with 5 expansion chips, 4 cascade sockets, 1 control socket, 4 board connectors, TYPE-C interface, 5V DC socket, and LED lights;

[0077] The expansion chips 1-4 are evenly distributed around the center of the control board, and the expansion chip 5 is distributed in the center of the control board;

[0078] The four cascade sockets are evenly distributed around the control board, and the control socket is distributed in the center of the control board in a cross shape.

[0079] The four board-to-board connectors are evenly distributed around the center of the control board, in the same position as the antenna board.

[0080] The TYPE-C interface and 5V DC socket are both located under the control board.

[0081] The phase adjustment unit includes a PIN diode and a board-to-board connector. The board-to-board connector has a DC1-DC64 output terminal. The PIN diode has an input terminal DC Control and an output terminal GND. The input terminal of the PIN diode is connected to the sector antenna, and the other end is connected to GND. The corresponding sector antennas are respectively connected to the board-to-board connector output terminals DC1-64. The voltage change of the PIN diode is used to generate two phase changes with a phase difference of 180°, namely 0° and 180°.

[0082] The expansion chips 1-4 are used to control the phase adjustment unit, and the expansion chip 5 is used to control the expansion chips 1-4 and the next level control board cascade. The cascade sockets are the upper cascade socket, the lower cascade socket, the left cascade socket, and the right cascade socket, and the control socket is the central control socket; the upper cascade socket, the lower cascade socket, the left cascade socket, and the right cascade socket are used to connect to the control socket of the next level control board; the central control socket is used to connect to the cascade socket of the processor or the next level control board;

[0083] A novel reconfigurable intelligent surface antenna and control circuit also includes an LED indicator light arranged on a control board and connected to an expansion chip and a sector antenna, and is used to determine whether a phase adjustment unit works normally.

[0084] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A novel reconfigurable smart surface antenna and control circuit, characterized in that: including a reconfigurable smart surface antenna panel and a reconfigurable smart surface control panel; The antenna board is provided with a plurality of phase adjustment units (D flip-flop, AND gate, RF switch) and a sector antenna and a board-to-board connector connected to the phase adjustment unit; the control board is provided with an expansion chip and a control socket, a cascade socket, a board-to-board connector, and a power supply unit connected to the expansion chip; The board-to-board connector is used to fix the antenna board and the control board and realize electrical signal transmission; The phase adjustment unit is used to adjust the phase changes of the sector antenna at different angles; The control socket of the control board is connected to the processor via a DuPont line or a cascade socket on another control board, so that several control boards can be cascaded.

2. According to claim 1, a novel reconfigurable smart surface antenna and control circuit is characterized in that: The antenna board is provided with 64 phase adjustment units, 64 sector antennas and 4 board-to-board connectors laid flat thereon; 64 of the sector antennas form an 8*8 array; The input end of the phase adjustment unit is connected to the board-to-board connector, and the output end is connected to the GND end of the sector antenna; The four board-to-board connectors are evenly distributed around the center of the antenna board.

3. According to claim 1, a novel reconfigurable smart surface antenna and control circuit is characterized in that: The control board is provided with an expansion chip, a cascade socket, a control socket, a board-to-board connector, a TYPE-C interface, a 5V DC socket, and an LED lamp laid flat thereon; The expansion chips 1-4 are evenly distributed around the center of the control board, and the expansion chip 5 is distributed in the center of the control board; The four cascade sockets are evenly distributed around the control board, and the control socket is distributed in the center of the control board in a cross shape; The four board-to-board connectors are evenly distributed around the center of the control board, and their positions correspond to the four board-to-board connectors on the antenna board; The TYPE-C interface and 5V DC socket are both located under the control board.

4. The novel reconfigurable smart surface antenna and control circuit according to claim 2, characterized in that: The phase adjustment unit includes a PIN diode and a board-to-board connector, the board-to-board connector has a DC1-DC64 output terminal, the PIN diode has an input terminal DC Control and an output terminal GND, the PIN diode input terminal is connected to the sector antenna, and the other end is connected to GND, the sector antenna is respectively connected to the board-to-board connector output terminals DC1-64, and the voltage change of the PIN diode is used to generate two phase changes with a phase difference of 180°, namely 0° and 180°.

5. The novel reconfigurable smart surface antenna and control circuit according to claim 2 is characterized in that: It also includes a matching circuit connected between the board-to-board connector output terminal DC1-64 and the sector antenna, which is used to adjust the impedance of the sector antenna to ensure the matching of signal transmission.

6. The novel reconfigurable smart surface antenna and control circuit according to claim 3 is characterized by: The extension chip, wherein the extension chip 1-4 is used to control the phase adjustment unit, and the extension chip 5 is used to control the cascade connection of the extension chip 1-4 and the next level control board.

7. The novel reconfigurable smart surface antenna and control circuit according to claim 3 is characterized by: The cascade sockets are upper cascade sockets, lower cascade sockets, left cascade sockets, and right cascade sockets, and the control socket is a central control socket; The upper cascade socket, the lower cascade socket, the left cascade socket, and the right cascade socket are used to connect to the control socket of the next level control board; The central control socket is used to connect to the cascade socket of the processor or the next-level control board.

8. The novel reconfigurable smart surface antenna and control circuit according to claim 3 is characterized by: It also includes an LED indicator light which is arranged on the control board and connected to the expansion chip and the sector antenna.

9. The novel reconfigurable smart surface antenna and control circuit according to claim 3 is characterized by: The model of the expansion chip is set to MCP23S18T-E / MJ.

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