System having reconfigurable reflectarray structure

Abstract

To provide system having a Reconfigurable ReflectArray (RRA) structure.SOLUTION: A system having a Reconfigurable ReflectArray (RRA) structure includes: a radiation layer which includes at least one phase shift switch diode and a plurality of reconfigurable reflective units some of which are electrically connected to the at least one phase shift switch diode; and a control layer which includes at least one switch element electrically connected to the radiation layer and at least one control unit electrically connected to the at least one switch element. Therein the number of those reconfigurable reflective units is different from the number of the at least one switch element. Consequently, the phase shift switch diode, the switch elements, the control unit, or display elements are decreased in number, and the system is further greatly reduced in power consumption, manufacturing cost, and subsequent maintenance cost on the whole.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a system comprising a reflective array structure, and in particular to a system comprising a reconfigurable reflective array structure. [Background technology]

[0002] Since 2015, Reconfigurable Intelligent Surface (RIS) technology has been widely discussed, and it is expected that by 2023, RIS technology will be incorporated into the key technology of the sixth generation (6G) mobile wireless communication network by many enterprises, corporations and international organizations, and this technology can replace active radio frequency devices in the construction of some base stations or signal amplifiers. However, the power consumption of the currently known RIS technology is too high, the manufacturing cost remains high, and the subsequent maintenance cost is also too high, making it difficult for the public and telecommunication operators to adopt it. Therefore, it is found that there is currently no system with a reconfigurable reflective array structure that can reduce power consumption, manufacturing cost and subsequent maintenance cost on the market, and related parties are looking for a solution. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, the object of the present invention is to provide a system with a reconfigurable reflector array structure that has a smaller number of elements than known structures without affecting the final radiation characteristics, thereby significantly reducing the power consumption, manufacturing costs, and subsequent maintenance costs of the entire system, and further solves the problems of known structures having too high power consumption, high manufacturing costs, and high subsequent maintenance costs. [Means for solving the problem]

[0004] According to one embodiment of a structural aspect of the present invention, there is provided a system having a reconfigurable reflect array (RRA) structure, comprising: an emission layer including at least one phase shift switch (P-Intrinsic-N, PIN) diode and a plurality of reconfigurable reflecting units, at least a portion of which are electrically connected to the at least one phase shift switch diode; and a control layer including at least one switch element electrically connected to the emission layer and at least one control unit electrically connected to the at least one switch element, wherein the number of the plurality of reconfigurable reflecting units is different from the number of the at least one switch element.

[0005] Another example of the above embodiment is as follows: the reconfigurable reflection units share the at least one phase-shift switch diode, the number of the reconfigurable reflection units is different from the number of the at least one phase-shift switch diode, and the reconfigurable reflection units are configured in a one-dimensional array or a two-dimensional array.

[0006] Another example of the above embodiment is as follows: the number of the reconfigurable reflection units is greater than the number of the at least one phase-shift switch diode, the number of the reconfigurable reflection units is greater than the number of the at least one switch element, and the number of the at least one phase-shift switch diode, the number of the at least one switch element, and the number of the at least one control unit are the same.

[0007] Another example of the above embodiment is as follows: The reconfigurable reflection unit includes a first radiating section connected to the at least one switch element, a second radiating section connected between the first radiating section and the at least one phase-shift switch diode, and a third radiating section connected to the second radiating section.

[0008] Another example of the above embodiment is as follows: the at least one control unit generates at least one control signal, the at least one switch element receives the at least one control signal and controls the multiple reconfigurable reflective units according to the at least one control signal, and the system with the reconfigurable reflective array structure further includes a display layer electrically connected to the at least one switch element of a control layer and the at least one control unit and including at least one display element, the at least one display element receives the at least one control signal and is controlled by the at least one control signal.

[0009] Another example of the above embodiment is as follows: a part of the reconfigurable reflective unit is electrically connected to the at least one phase-shift switch diode, another part of the plurality of reconfigurable reflective units is floating, and the emissive layer further includes a plurality of other phase-shift switch diodes and a plurality of other reconfigurable reflective units each electrically connected to the plurality of other phase-shift switch diodes.

[0010] According to another embodiment of the structural aspect of the present invention, a reconfigurable reflectarray is provided. a control layer including at least one first switch element electrically connected to the emissive layer, at least one second switch element electrically connected to the emissive layer, at least one first control unit electrically connected to the at least one first switch element, and at least one second control unit electrically connected to the at least one second switch element, wherein a number of the plurality of first reconfigurable reflective units is different from a number of the at least one first switch element, and a number of the plurality of second reconfigurable reflective units is different from a number of the at least one second switch element.

[0011] Other examples of the above-mentioned embodiments are as follows: the first reconfigurable reflection units share the at least one first phase-shift switch diode, the number of the plurality of first reconfigurable reflection units is different from the number of the at least one first phase-shift switch diode, the plurality of first reconfigurable reflection units are arranged in a one-dimensional array or a two-dimensional array, the number of the plurality of second reconfigurable reflection units is different from the number of the at least one second phase-shift switch diode, and the plurality of second reconfigurable reflection units are arranged in a one-dimensional array or a two-dimensional array.

[0012] Other examples of the above-mentioned embodiments are as follows: the number of the first reconfigurable reflection units is greater than the number of the at least one first phase shift switch diode, the number of the plurality of first reconfigurable reflection units is greater than the number of the at least one first switch element, the number of the at least one first phase shift switch diode, the number of the at least one first switch element, and the number of the at least one first control unit are the same, the number of the plurality of second reconfigurable reflection units is greater than the number of the at least one second phase shift switch diode, the number of the plurality of second reconfigurable reflection units is greater than the number of the at least one second switch element, and the number of the at least one second phase shift switch diode is the same as the number of the at least one second switch element.

[0013] Another example of the above embodiment is as follows: the first reconfigurable reflecting unit includes a first radiating section connected to the at least one first switch element, a second radiating section connected between the first radiating section and the at least one first phase-shift switch diode, and a third radiating section connected to the second radiating section, and the plurality of second reconfigurable reflecting units include a fourth radiating section connected to the at least one second switch element and a fifth radiating section corresponding to the other portion of the plurality of second reconfigurable reflecting units.

[0014] Another example of the above embodiment is as follows: the at least one first control unit generates at least one first control signal, the at least one first switch element receives the at least one first control signal and controls the plurality of first reconfigurable reflecting units according to the at least one first control signal, the at least one second control unit generates at least one second control signal, the at least one second switch element receives the at least one second control signal and controls a fourth radiator according to the at least one second control signal.

[0015] Another example of the above embodiment is as follows: The system with the above reconfigurable reflective array structure further includes a display layer including at least one first display element electrically connected to the at least one first switch element of a control layer and the at least one first control unit, receiving the at least one first control signal, and controlled by the at least one first control signal, and at least one second display element electrically connected to the at least one second switch element of a control layer and the at least one second control unit, receiving the at least one second control signal, and controlled by the at least one second control signal.

[0016] According to another embodiment of a structural aspect of the present invention, there is provided a system including a reconfigurable reflect array (RRA) structure, the system including: an emission layer including at least one first phase shift switch (P-Intrinsic-N, PIN) diode; a plurality of second phase shift switch diodes; a plurality of first reconfigurable reflecting units, at least a portion of which are electrically connected to the at least one first phase shift switch diode; and a plurality of second reconfigurable reflecting units, each electrically connected to the plurality of second phase shift switch diodes; and a control layer including at least one first switch element electrically connected to the emission layer; at least one second switch element electrically connected to the emission layer; at least one first control unit electrically connected to the at least one first switch element; and at least one second control unit electrically connected to the at least one second switch element, wherein a number of the plurality of first reconfigurable reflecting units is different from a number of the at least one first switch element, and a number of the plurality of second reconfigurable reflecting units is different from a number of the at least one second switch element.

[0017] Other examples of the above-mentioned embodiments are as follows: the first reconfigurable reflection units share the at least one first phase-shift switch diode, the number of the plurality of first reconfigurable reflection units is different from the number of the at least one first phase-shift switch diode, the plurality of first reconfigurable reflection units are arranged in a one-dimensional array or a two-dimensional array, the number of the plurality of second reconfigurable reflection units is the same as the number of the plurality of second phase-shift switch diodes, and the plurality of second reconfigurable reflection units are arranged in a one-dimensional array or a two-dimensional array.

[0018] Other examples of the above-mentioned embodiments are as follows: the number of the first reconfigurable reflection units is greater than the number of the at least one first phase shift switch diode, the number of the plurality of first reconfigurable reflection units is greater than the number of the at least one first switch element, the number of the at least one first phase shift switch diode, the number of the at least one first switch element, and the number of the at least one first control unit are the same; the number of the plurality of second reconfigurable reflection units is greater than the number of the at least one second switch element, and the number of the plurality of second phase shift switch diodes is greater than the number of the at least one second switch element.

[0019] Another example of the above embodiment is as follows: the first reconfigurable reflection unit includes a first radiating section connected to the at least one first switch element, a second radiating section connected between the first radiating section and the at least one first phase-shift switch diode, and a third radiating section connected to the second radiating section, and the plurality of second reconfigurable reflection units are connected to the at least one second switch element.

[0020] Another example of the above embodiment is as follows: the at least one first control unit generates at least one first control signal, the at least one first switch element receives the at least one first control signal and controls the plurality of first reconfigurable reflection units according to the at least one first control signal, the at least one second control unit generates at least one second control signal, the at least one second switch element receives the at least one second control signal and controls the plurality of second reconfigurable reflection units according to the at least one second control signal.

[0021] Another example of the above embodiment is as follows: The system with the above reconfigurable reflective array structure further includes a display layer including at least one first display element electrically connected to the at least one first switch element of a control layer and the at least one first control unit, receiving the at least one first control signal, and controlled by the at least one first control signal, and at least one second display element electrically connected to the at least one second switch element of a control layer and the at least one second control unit, receiving the at least one second control signal, and controlled by the at least one second control signal. Effect of the Invention

[0022] As a result, a system including the reconfigurable reflector array structure of the present invention has a smaller number of phase-shift switch diodes, switch elements, control units or display elements than known structures without affecting the final radiation characteristics, thereby significantly reducing the power consumption, manufacturing costs and subsequent maintenance costs of the entire system. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a schematic diagram illustrating a system including a reconfigurable reflective array structure according to a first embodiment of the present invention. [Diagram 2]FIG. 4 is a schematic diagram illustrating a system having a reconfigurable reflective array structure according to a second embodiment of the present invention. [Diagram 3] FIG. 13 is a schematic diagram of a system including a reconfigurable reflective array structure according to a third embodiment of the present invention. [Figure 4] FIG. 13 is a schematic diagram illustrating a system having a reconfigurable reflective array structure according to a fourth embodiment of the present invention. [Diagram 5] FIG. 13 is a schematic diagram illustrating a system having a reconfigurable reflective array structure according to a fifth embodiment of the present invention. [Figure 6] FIG. 13 is a schematic diagram illustrating a system having a reconfigurable reflective array structure according to a sixth embodiment of the present invention. [Figure 7] FIG. 13 is a schematic diagram of a system including a reconfigurable reflective array structure according to a seventh embodiment of the present invention. [Figure 8] FIG. 13 is a schematic diagram showing a system including a reconfigurable reflective array structure according to an eighth embodiment of the present invention. [Figure 9] FIG. 13 is a schematic diagram showing a system including a reconfigurable reflective array structure according to a ninth embodiment of the present invention. [Figure 10] FIG. 16 is a schematic diagram showing a system having a reconfigurable reflective array structure according to a tenth embodiment of the present invention. [Figure 11] FIG. 14 is a schematic diagram showing a system having a reconfigurable reflector array structure according to an eleventh embodiment of the present invention. [Figure 12A] FIG. 12 is a schematic diagram showing an emissive layer according to a twelfth embodiment of the present invention. [Figure 12B] FIG. 12B is a schematic diagram illustrating an outdoor application of the emissive layer of FIG. 12A. [Figure 13] FIG. 13 is a schematic diagram showing the phase distribution corresponding to the cell array of the emitting layer in the thirteenth embodiment of the present invention; [Figure 14A] FIG. 14 is a schematic perspective view showing an integrated unit of an emissive layer and a group of dumbbell-shaped units according to a fourteenth embodiment of the present invention. [Figure 14B] FIG. 14B is a schematic diagram showing the relationship between radar cross section gain and angle for the integrated unit and the dumbbell-shaped unit group of FIG. 14A. [Figure 14C]FIG. 14B is a schematic diagram showing the phase vs. frequency relationship of the integration unit of FIG. 14A of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, several embodiments of the present invention will be described with reference to the drawings. For clarity, many practical details are described in the following description. However, it should be understood that these practical details are not used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. Also, in order to simplify the drawings, well-known and conventional structures and elements are simply shown in the drawings. Also, duplicated elements may be indicated by the same numbers.

[0025] In this specification, when an element (or a unit or a module, etc.) is "connected" to another element, it may mean that the element is directly connected to the other element, or that the element is indirectly connected to the other element, that is, the other element is interposed between the element and the other element. When an element is "directly connected" to another element, it indicates that the other element is not interposed between the element and the other element. The terms first, second, third, etc. are merely for describing different elements and are not limitations on the elements themselves, so the first element can be read as the second element. In addition, the combinations of elements / units / circuits in this specification are not generally well-known, common, or known combinations in this field, and whether the combination relationship is easily achieved by a person skilled in the art cannot be determined based on whether the elements / units / circuits themselves are known.

[0026] Please refer to FIG. 1. FIG. 1 is a schematic diagram showing a system 100 with a reconfigurable reflective array structure of a first embodiment of the present invention. The system 100 with a reconfigurable reflective array structure includes an emission layer 200 and a control layer 300. The emission layer 200 includes four emission modules 202, and any one of the four emission modules 202 includes a phase-shift switch (P-Intrinsic-N, PIN) diode 210 and a plurality of reconfigurable reflective units 220a, 220b, 220c, 220d (220a to 220d). At least a part of the reconfigurable reflective units 220a to 220d is electrically connected to the phase-shift switch diode 210. The control layer 300 includes at least one switch element 310 and at least one control unit 320. The switch element 310 is electrically connected to the emission layer 200. The control unit 320 is electrically connected to the switch element 310. The number of reconfigurable reflection units 220a to 220d is different from the number of switch elements 310.

[0027] In detail, the reconfigurable reflecting units 220a-220d share the phase-shift switch diode 210, and the number of the reconfigurable reflecting units 220a-220d is different from the number of the phase-shift switch diodes 210. Taking one radiation module 202 as an example, the reconfigurable reflecting units 220a-220d are configured in a 4×1 one-dimensional array, the number of the reconfigurable reflecting units 220a-220d is 4, and the number of the phase-shift switch diodes 210 is 1. The number of the switch elements 310 corresponding to one radiation module 202 is 1, and the number of the control units 320 is 1. That is, the number of the reconfigurable reflecting units 220a-220d is greater than the number of the phase-shift switch diodes 210, and the number of the reconfigurable reflecting units 220a-220d is greater than the number of the switch elements 310. The number of the phase-shift switch diodes 210, the number of the switch elements 310, and the number of the control units 320 are the same.

[0028] The reconfigurable reflecting units 220a-220d include a first radiating portion 222, a second radiating portion 224, and a third radiating portion 226. The first radiating portion 222 includes a reconfigurable reflecting unit 220a, and is connected to the switch element 310. The second radiating portion 224 includes reconfigurable reflecting units 220b, 220c, and is connected between the first radiating portion 222 and the phase shift switch diode 210. The third radiating portion 226 includes a reconfigurable reflecting unit 220d, and is connected to the second radiating portion 224. The reconfigurable reflecting units 220a-220d may be connected in sequence via a plurality of elongated first metal connection parts. The patterns of the reconfigurable reflecting units 220a-220d may be the same or different according to the usage demand. The reconfigurable reflecting units 220b, 220c may be connected to the phase shift switch diode 210 via two L-shaped second metal connection parts, respectively.

[0029] In this embodiment, all the reconfigurable reflective units 220a-220d in the emitting layer 200 are configured in a 4×4 two-dimensional array, the number of phase-shift switch diodes 210 is 4, the number of all the switch elements 310 in the control layer 300 is 4, and the number of control units 320 is 4, but the present invention is not limited thereto. In addition, the control units 320 in the control layer 300 generate control signals, and the switch elements 310 receive the control signals and control the reconfigurable reflective units 220a-220d according to the control signals.

[0030] Please refer to FIG. 1 and FIG. 2 together. FIG. 2 is a schematic diagram showing a system 100a with a reconfigurable reflective array structure according to a second embodiment of the present invention. The system 100a with a reconfigurable reflective array structure includes an emission layer 200a and a control layer 300a. The emission layer 200a includes two emission modules 202a, and any one of the two emission modules 202a includes a phase-shift switch diode 210 and a plurality of reconfigurable reflective units 220a, 220b, 220c, 220d, 220e, 220f, 220g, and 220h (220a to 220h). At least some of the reconfigurable reflective units 220a to 220h are electrically connected to the phase-shift switch diode 210. The control layer 300a includes two switch elements 310 and two control units 320. The switch element 310 is electrically connected to the emission layer 200a. The control unit 320 is electrically connected to the switch element 310. The number (8) of the reconfigurable reflection units 220a to 220h is different from the number (1) of the switch elements 310.

[0031] The structures of the phase-shift switch diode 210, the reconfigurable reflecting units 220a-220d, the switch element 310 and the control unit 320 in Fig. 2 are similar to those of the phase-shift switch diode 210, the reconfigurable reflecting units 220a-220d, the switch element 310 and the control unit 320 in Fig. 1, respectively, and the details thereof will not be described further. The reconfigurable reflecting unit 220e is connected to the reconfigurable reflecting unit 220a, the reconfigurable reflecting unit 220f is connected to the reconfigurable reflecting units 220b, 220e, the reconfigurable reflecting unit 220g is connected to the reconfigurable reflecting units 220c, 220f, and the reconfigurable reflecting unit 220h is connected to the reconfigurable reflecting units 220d, 220g.

[0032] In any one of the two radiation modules 202a, the reconfigurable reflection units 220a-220h are configured in a two-dimensional array of 4×2. In this embodiment, all the reconfigurable reflection units 220a-220h in the radiation layer 200a are configured in a two-dimensional array of 4×4, the number of the phase-shift switch diodes 210 is 2, the number of all the switch elements 310 in the control layer 300a is 2, and the number of the control units 320 is 2, but the present invention is not limited to the above.

[0033] Please refer to FIG. 1 and FIG. 3 together. FIG. 3 is a schematic diagram showing a system 100b with a reconfigurable reflective array structure according to a third embodiment of the present invention. The system 100b with a reconfigurable reflective array structure includes an emission layer 200b and a control layer 300b. The emission layer 200b includes two first emission modules (i.e., emission module 202) and two second emission modules 202b1, 202b2. Any one of the two first emission modules (i.e., emission module 202) includes a first phase-shift switch diode (i.e., phase-shift switch diode 210) and a plurality of first reconfigurable reflection units (i.e., reconfigurable reflection units 220a-220d), and its structure is similar to that of the emission module 202 in FIG. 1, and the details thereof will not be described further. Either one of the two second radiation modules 202b1, 202b2 includes two second phase-shift switch diodes 210b and four second reconfigurable reflection units 220i, 220j, 220k, 220l (220i to 220l). A part of the second reconfigurable reflection units 220i to 220l (e.g., the second reconfigurable reflection units 220i, 220l) is electrically connected to the second phase-shift switch diode 210b, and another part of the second reconfigurable reflection units 220i to 220l (e.g., the second reconfigurable reflection units 220j, 220k) is floating. Note that the control layer 300b includes two first switch elements (i.e., the switch element 310), four second switch elements 310b, two first control units (i.e., the control unit 320), and two second control units 320b. The first switch element (i.e., switch element 310) is electrically connected to the emitting layer 200b. The second switch element 310b is electrically connected to the emitting layer 200b. The first control unit (i.e., control unit 320) is electrically connected to the first switch element (i.e., switch element 310). The second control unit 320b is electrically connected to the second switch element 310b.

[0034] The number of the first reconfigurable reflecting units (i.e., the reconfigurable reflecting units 220a-220d) is different from the number of the first switch elements (i.e., the switch elements 310), and the number of the second reconfigurable reflecting units 220i-220l is different from the number of the second switch elements 310b. The number of the second reconfigurable reflecting units 220i-220l is different from the number of the second phase shift switch diodes 210b. Taking the second radiation module 202b1 as an example, the second reconfigurable reflecting units 220i-220l are configured in a 4×1 one-dimensional array, the number of the second reconfigurable reflecting units 220i-220l is four, and the number of the second phase shift switch diodes 210b is two. The number of the second switch elements 310b corresponding to the second radiation module 202b1 is two, and the number of the second control units 320b is one. That is, the number of the second reconfigurable reflection units 220i to 220l is greater than the number of the second phase shift switch diodes 210b, the number of the second reconfigurable reflection units 220i to 220l is greater than the number of the second switch elements 310b, and the number of the second phase shift switch diodes 210b is the same as the number of the second switch elements 310b.

[0035] The first reconfigurable reflecting units (i.e., the reconfigurable reflecting units 220a to 220d) include a first radiating portion 222, a second radiating portion 224, and a third radiating portion 226. The first radiating portion 222 is connected to the first switch element (i.e., the switch element 310). The second radiating portion 224 is connected between the first radiating portion 222 and the first phase shift switch diode (i.e., the phase shift switch diode 210). The third radiating portion 226 is connected to the second radiating portion 224. In addition, the second reconfigurable reflecting units 220i to 220l include a fourth radiating portion 228 and a fifth radiating portion 230. The fourth radiating portion 228 is connected to the second switch element 310b, and specifically, the fourth radiating portion 228 includes second reconfigurable reflecting units 220i, 220l, and the second reconfigurable reflecting unit 220i is connected to the second switch element 310b. The fifth radiating section 230 corresponds to another part of the second reconfigurable reflecting units 220i to 220l, and the fifth radiating section 230 includes second reconfigurable reflecting units 220j, 220k, and the second reconfigurable reflecting units 220j, 220k are adjacent to each other.

[0036] The two first control units (i.e., the control units 320) generate two first control signals, the two first switch elements (i.e., the switch elements 310) receive the two first control signals, and control the first reconfigurable reflecting units (i.e., the reconfigurable reflecting units 220a-220d) based on the two first control signals. The two second control units 320b generate four second control signals, and the four second switch elements 310b receive the four second control signals, and control the second reconfigurable reflecting units 220i, 220l of the fourth radiating portion 228 based on the four second control signals.

[0037] In addition, the difference between the second emitting modules 202b1 and 202b2 is that the positions of the second reconfigurable reflecting units 220j and 220k of the fifth emitting part 230 are different, and the two have different reflection phases, so that the present invention can adaptively adjust the reflection phase of the emitting layer 200b.

[0038] Please refer to FIG. 1 and FIG. 4 together. FIG. 4 is a schematic diagram showing a system 100c with a reconfigurable reflective array structure according to a fourth embodiment of the present invention. The system 100c with a reconfigurable reflective array structure includes an emission layer 200c and a control layer 300c. The emission layer 200c includes two first emission modules (i.e., emission modules 202) and two second emission modules 202c. Any one of the two first emission modules (i.e., emission modules 202) includes a first phase-shift switch diode (i.e., phase-shift switch diode 210) and a plurality of first reconfigurable reflection units (i.e., reconfigurable reflection units 220a to 220d), and its structure is similar to that of the emission module 202 in FIG. 1, and the details thereof will not be described further. Any one of the two second radiation modules 202c includes four second phase-shift switch diodes 210c and four second reconfigurable reflection units 220m, 220n, 220p, 220q (220m to 220q). The second reconfigurable reflection units 220m to 220q are electrically connected to the second phase-shift switch diodes 210c, respectively. In addition, the control layer 300c includes two first switch elements (i.e., switch elements 310), two second switch elements 310c, two first control units (i.e., control units 320), and two second control units 320c. The first switch elements (i.e., switch elements 310) are electrically connected to the radiation layer 200c. The second switch element 310c is electrically connected to the radiation layer 200c. The first control unit (i.e., control unit 320) is electrically connected to the first switch elements (i.e., switch elements 310). The second control unit 320c is electrically connected to the second switch element 310c. The structures of the first switch element (i.e., switch element 310) and the first control unit (i.e., control unit 320) are similar to those of the switch element 310 and control unit 320 in FIG. 1, and will not be described further.

[0039] The number of the second reconfigurable reflection units 220m-220q is different from the number of the second switch elements 310c. The number of the second reconfigurable reflection units 220m-220q is the same as the number of the second phase shift switch diodes 210c. Taking one second radiation module 202c as an example, the second reconfigurable reflection units 220m-220q are configured in a 4×1 one-dimensional array, the number of the second reconfigurable reflection units 220m-220q is 4, and the number of the second phase shift switch diodes 210c is 4. The number of the second switch elements 310c corresponding to one second radiation module 202c is 1, and the number of the second control units 320c is 1. That is, the number of the second reconfigurable reflection units 220m-220q is greater than the number of the second switch elements 310c, and the number of the second phase shift switch diodes 210c is greater than the number of the second switch elements 310c. In addition, the second reconfigurable reflection units 220m to 220q are connected to the second switch element 310c. The two second control units 320c generate two second control signals, and the two second switch elements 310c receive the two second control signals and control the second reconfigurable reflection units 220m to 220q based on the two second control signals.

[0040] Please refer to Figures 3, 4 and 5 together. Figure 5 is a schematic diagram showing a system 100d with a reconfigurable reflective array structure according to a fifth embodiment of the present invention. The system 100d with a reconfigurable reflective array structure includes an emission layer 200d and a control layer 300d. The emission layer 200d includes two first emission modules (i.e., emission module 202), a second emission module 202b1 and a second emission module 202c. The control layer 300d includes two first switch elements (i.e., switch element 310), two second switch elements 310b, a second switch element 310c, two first control units (i.e., control unit 320), a second control unit 320b and a second control unit 320c. The structures of the first radiation module (i.e., the radiation module 202), the second radiation module 202c, the first switch element (i.e., the switch element 310), the second switch element 310c, the first control unit (i.e., the control unit 320) and the second control unit 320c are the same as those of the first radiation module (i.e., the radiation module 202), the second radiation module 202c, the first switch element (i.e., the switch element 310), the second switch element 310c, the first control unit (i.e., the control unit 320) and the second control unit 320c in FIG. 4, and the structures of the second radiation module 202b1, the second switch element 310b and the second control unit 320b are the same as those of the second radiation module 202b1, the second switch element 310b and the second control unit 320b in FIG. 3, and the details thereof will not be described further.

[0041] Please refer to Figures 2, 3 and 6 together. Figure 6 is a schematic diagram of a system 100e with a reconfigurable reflective array structure according to a sixth embodiment of the present invention. The system 100e with a reconfigurable reflective array structure includes an emission layer 200e and a control layer 300e. The emission layer 200e includes a first emission module (i.e., emission module 202a) and two second emission modules 202b1, 202b2. The control layer 300e includes a first switch element (i.e., switch element 310), four second switch elements 310b, a first control unit (i.e., control unit 320) and two second control units 320b. The structures of the first radiation module (i.e., radiation module 202a), the first switch element (i.e., switch element 310) and the first control unit (i.e., control unit 320) are similar to those of the first radiation module (i.e., radiation module 202a), the first switch element (i.e., switch element 310) and the first control unit (i.e., control unit 320) in FIG. 2, and the structures of the second radiation module 202b1, 202b2, the second switch element 310b and the second control unit 320b are similar to those of the second radiation module 202b1, 202b2, the second switch element 310b and the second control unit 320b in FIG. 3, and the details thereof will not be described further.

[0042] Please refer to Figures 2, 4 and 7 together. Figure 7 is a schematic diagram showing a system 100f with a reconfigurable reflective array structure according to a seventh embodiment of the present invention. The system 100f with a reconfigurable reflective array structure includes an emission layer 200f and a control layer 300f. The emission layer 200f includes a first emission module (i.e., emission module 202a) and two second emission modules 202c. The control layer 300f includes a first switch element (i.e., switch element 310), two second switch elements 310c, a first control unit (i.e., control unit 320) and two second control units 320c. The structures of the first radiation module (i.e., radiation module 202a), the first switch element (i.e., switch element 310) and the first control unit (i.e., control unit 320) are similar to those of the first radiation module (i.e., radiation module 202a), the first switch element (i.e., switch element 310) and the first control unit (i.e., control unit 320) in FIG. 2, and the structures of the second radiation module 202c, the second switch element 310c and the second control unit 320c are similar to those of the second radiation module 202c, the second switch element 310c and the second control unit 320c in FIG. 4, and the details thereof will not be described further.

[0043] Please refer to Figures 2, 5 and 8 together. Figure 8 is a schematic diagram showing a system 100g with a reconfigurable reflective array structure according to an eighth embodiment of the present invention. The system 100g with a reconfigurable reflective array structure includes an emission layer 200g and a control layer 300g. The emission layer 200g includes a first emission module (i.e., emission module 202a), a second emission module 202b1 and a second emission module 202c. The control layer 300g includes a first switch element (i.e., switch element 310), two second switch elements 310b, a second switch element 310c, a first control unit (i.e., control unit 320), a second control unit 320b and a second control unit 320c. The structures of the first radiation module (i.e., radiation module 202a), the first switch element (i.e., switch element 310) and the first control unit (i.e., control unit 320) are similar to those of the first radiation module (i.e., radiation module 202a), the first switch element (i.e., switch element 310) and the first control unit (i.e., control unit 320) in FIG. 2, and the structures of the second radiation module 202b1, 202c, the second switch elements 310b, 310c and the second control units 320b, 320c are similar to those of the second radiation module 202b1, 202c, the second switch elements 310b, 310c and the second control units 320b, 320c in FIG. 5, and the details thereof will not be described further.

[0044] Please refer to Fig. 1 and Fig. 9 together. Fig. 9 is a schematic diagram of a system 100h with a reconfigurable reflective array structure according to a ninth embodiment of the present invention. The system 100h with a reconfigurable reflective array structure includes an emissive layer 200h, a control layer 300h, a display layer 400 and a control device 500. The structures of the emissive layer 200h and the control layer 300h are similar to those of the emissive layer 200 and the control layer 300 in Fig. 1, and the details thereof will not be described further. The display layer 400 is electrically connected to the switch element 310 and the control unit 320 of the control layer 300h, and includes four display elements 410. The four display elements 410 receive four control signals from the control unit 320, and are controlled by the four control signals. In addition, the control device 500 is electrically connected to the control unit 320 and provides a number of global control signals to the control unit 320 to control all the reconfigurable reflective units on the emissive layer 200h (i.e., the reconfigurable reflective units 220a-220d, shown in FIG. 1).

[0045] Please refer to Fig. 7 and Fig. 10 together. Fig. 10 is a schematic diagram showing a system 100i with a reconfigurable reflective array structure according to a tenth embodiment of the present invention. The system 100i with a reconfigurable reflective array structure includes an emissive layer 200i, a control layer 300i, a display layer 400i and a control device 500i. The structures of the emissive layer 200i and the control layer 300i are similar to those of the emissive layer 200f and the control layer 300f in Fig. 7, and the details thereof will not be described further. The display layer 400i includes a first display element (i.e., a display element 410) and two second display elements 410c. The first display element (i.e., display element 410) is electrically connected to one first switch element (i.e., switch element 310) and a first control unit (i.e., control unit 320) of the control layer 300i, the first display element (i.e., display element 410) receives a first control signal from the first control unit (i.e., control unit 320) and is controlled by the first control signal. The second display element 410c is electrically connected to the second switch element 310c and a second control unit 320c of the control layer 300i, the second display element 410c receives a second control signal from the second control unit 320c and is controlled by the second control signal. In addition, the control device 500i is electrically connected to the first control unit (i.e., control unit 320) and the second control unit 320c, and provides a number of global control signals to the first control unit (i.e., control unit 320) and the second control unit 320c to control all the reconfigurable reflective units (i.e., reconfigurable reflective units 220a-220h, second reconfigurable reflective units 220m-220q, shown in FIG. 7) on the emissive layer 200i.

[0046] Please refer to Figures 3, 4 and 11 together. Figure 11 is a schematic diagram showing a system 100j with a reconfigurable reflective array structure according to an eleventh embodiment of the present invention. The system 100j with a reconfigurable reflective array structure includes an emission layer 200j and a control layer 300j. The emission layer 200j includes two first emission modules (i.e., second emission modules 202b1, 202b2) and two second emission modules 202c. The control layer 300j includes four first switch elements (i.e., second switch elements 310b), two second switch elements 310c, two first control units (i.e., second control units 320b) and two second control units 320c. The structures of the above-mentioned first radiation module (i.e., the second radiation module 202b1, 202b2), the first switch element (i.e., the second switch element 310b) and the first control unit (i.e., the second control unit 320b) are similar to the structures of the second radiation module 202b1, 202b2, the second switch element 310b and the second control unit 320b in FIG. 3, and the structures of the above-mentioned second radiation module 202c, the second switch element 310c and the second control unit 320c are similar to the structures of the second radiation module 202c, the second switch element 310c and the second control unit 320c in FIG. 4, and the details thereof will not be described further.

[0047] Please refer to Figure 1, Figure 12A and Figure 12B together. Figure 12A is a schematic diagram of a radiating layer 200k of a twelfth embodiment of the present invention, and Figure 12B is a schematic diagram of the radiating layer 200k of Figure 12A being applied to an outdoor environment. The outdoor environment includes a radiating layer 200k, a base station 102, a plurality of user equipments (UEs) 104, a first building B1 and a second building B2. The radiating layer 200k is installed in the second building B2 and includes a first radiating component 201a and a second radiating component 201b. The first radiating component 201a includes four first radiating modules 202d. Each of the four first radiation modules 202d includes a first phase-shift switch diode (i.e., the phase-shift switch diode 210) and two first reconfigurable reflection units (i.e., the reconfigurable reflection units 220b, 220c), and the structure thereof is similar to that of the phase-shift switch diode 210 and the reconfigurable reflection units 220b, 220c in FIG. 1, and the details thereof will not be described further. The second radiation component 201b includes two second radiation modules (i.e., the radiation module 202), and the structure of each of the two second radiation modules (i.e., the radiation module 202) is similar to that of the radiation module 202 in FIG. 1, and the details thereof will not be described further. The reflection phases of the four first radiation modules 202d and the reflection phases of the two second radiation modules (i.e., the radiation module 202) are different from each other, and each of them shares one phase-shift switch diode 210.

[0048] 12B, originally the base station 102 should transmit a signal to the user equipment 104 along a first path P1, but since the first path P1 is blocked by the first building B1, the signal is changed to transmit the signal to the user equipment 104 via a radiating layer 200k in the second building B2 by a second path P2. The first radiating component 201a of the radiating layer 200k is used to determine the left and right, and the second radiating component 201b is used to determine the tilt angle, so that the user equipment 104 located in the region R can transmit the signal efficiently.

[0049] The structure of the emissive layer 200, 200a, 200b, 200c, 200d, 200e, 200f, 200g, 200h, 200i, 200j, 200k of the present invention can be regarded as a reconfigurable reflective array structure. In the case of a 4×4 reconfigurable reflective array structure (i.e., 16 reconfigurable reflective units), the number of phase shift switch diodes in the emissive layer of the known structure is usually 16, the number of switch elements and control units in the control layer is 16 and 4, respectively, and the number of display elements in the display layer is 16. The number of the phase shift switch diodes, the number of switch elements, the number of control units, and the number of display elements all affect the power consumption of the entire system. Conversely, in the present invention, the structures of the first to twelfth embodiments described above have fewer phase shift switch diodes, switch elements, control units, or display elements than the known structures, so that the power consumption of the entire system can be significantly reduced.

[0050] In the above embodiment, the reconfigurable reflective units 220a-220h and the second reconfigurable reflective units 220i-220l, 220m-220q of the present invention may be made of metal and may have any pattern shape using RIS technology. The switch element 310 and the second switch element 310b, 310c may be a bipolar junction transistor (BJT) or a metal oxide semiconductor field effect transistor (MOSFET). The control unit 320 and the second control unit 320b may be a shift register or a field programmable gate array (FPGA). The display element 410 and the second display element 410c may be a light-emitting diode (LED), and determine whether to emit light based on the control signal and the second control signal. The control devices 500, 500i may be an Arduino device, a central processing unit (CPU), or other arithmetic processor. The user equipment 104 may be a mobile phone or other mobile device, although the invention is not limited thereto.

[0051] Please refer to FIG. 3 and FIG. 13 together. FIG. 13 is a schematic diagram showing the phase distribution corresponding to the cell array (40×40) of the radiation layer of the thirteenth embodiment of the present invention. In the present invention, under a restrictive condition (such as an angle of 1 degree to 60 degrees), there is a position where the phase does not need to be changed (the phase does not change). The base station distance RIS can be divided into two types: a first type of base station distance RIS=1 m and a second type of base station distance RIS=999999 m. For the second type (the second type in FIG. 13), from the viewpoint that the angle is 1 degree to 60 degrees, the two central regions (cell index (along the x-axis)=20, 21) correspond to no phase change, that is, the phase of the first region (cell index (along the x-axis)=20) is always 0, and the phase of the second region (cell index (along the x-axis)=21) is always 1. As a result, the present invention can save power consumption and manufacturing costs by using a "unit without a switching element" (for example, the fifth radiation unit 230 in FIG. 3) at a position where the phase does not change.

[0052] Please refer to FIG. 1, FIG. 14A, FIG. 14B and FIG. 14C. FIG. 14A is a perspective schematic diagram showing an integrated unit 610 and a dumbbell-shaped unit group 620 of the radiation layer according to the fourteenth embodiment of the present invention. FIG. 14B is a schematic diagram showing the relationship between the radar cross-section (RCS) gain and angle of the integrated unit 610 and the dumbbell-shaped unit group 620 of FIG. 14A. FIG. 14C is a schematic diagram showing the relationship between the phase and frequency of the integrated unit 610 of FIG. 14A. Taking the dumbbell-shaped unit group 620 as an example, the dumbbell-shaped unit group 620 includes two dumbbell-shaped units. When two dumbbell-shaped units form an array, one switching element is added for each half-wavelength pitch, and the structure of the switching element is the same as the structure of the phase shift switch diode 210 of FIG. 1. The present invention completes the concept of low power consumption by using an integrated unit 610 that is the same size as the dumbbell-shaped unit group 620 and can obtain the same effect (for example, an RCS gain of 5.04 dB) with only one switching element. The bandwidth of the switching element (the phase difference between the "ON state" and the "OFF state" is about 180 degrees (180 degrees ± 20 degrees)) is 25 GHz to 28.6 GHz (3.6 GHz is about 12.9%).

[0053] As can be seen from the above embodiments, the present invention has the following advantages: 1. Without affecting the final emission characteristics, the present invention has fewer phase-shifting switch diodes, fewer switch elements, fewer control units or fewer display elements than the known structures, so that the power consumption, manufacturing cost and subsequent maintenance cost of the entire system can be greatly reduced. 2. The reduction in the number of elements can not only further simplify the bias circuit of the control layer, but also make the reconfigurable reflective unit of the emitting layer more compact. 3. The reflection phase can be adaptively adjusted through the structural change of the reconfigurable reflective unit of the emitting layer.

[0054] Although the present invention has been disclosed in the above-mentioned embodiments, the above-mentioned embodiments are not used to limit the present invention, and various modifications and finishes are possible without departing from the spirit and scope of the present invention, so the scope of protection of the present invention should be limited by the claims attached later. [Explanation of symbols]

[0055] 100, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i, 100j: systems with reconfigurable reflective array structures 102:Base station 104: User equipment 200, 200a, 200b, 200c, 200d, 200e, 200f, 200g, 200h, 200i, 200j, 200k: Radiation layer 201a: First radiating component 201b: Second radiating component 202, 202a: Radiation module 202b1, 202b2, 202c: second radiation module 202d: First radiation module 210: Phase shift switch diode 210b, 210c: second phase shift switch diode 220a, 220b, 220c, 220d, 220e, 220f, 220g, 220h: reconfigurable reflection units 220i, 220j, 220k, 220l, 220m, 220n, 220p, 220q: 2nd reconfigurable reflector unit 222: First radiation part 224: Second radiation part 226: Third radiation part 228: 4th radiation part 230: 5th radiation part 300, 300a, 300b, 300c, 300d, 300e, 300f, 300g, 300h, 300i, 300j: Control layer 310: Switch element 310b, 310c: second switch element 320: Control unit 320b, 320c: second control unit 400, 400i: Display layer 410: Display element 410c: second display element 500, 500i: Control device 610: Integrated Unit 620: Dumbbell-shaped units B1: First building B2: Second building P1: 1st pathway P2: 2nd pathway R:Region

Claims

1. 1. A system comprising a Reconfigurable Reflect Array (RRA) structure, comprising: At least one phase shift switch (P-Intrinsic-N, PIN) diode; a plurality of reconfigurable reflecting units, at least a portion of which is electrically connected to the at least one phase-shift switch diode; a radiative layer including at least one switch element electrically connected to the emissive layer; at least one control unit electrically connected to the at least one switch element; a control layer including: Including, A system comprising a reconfigurable reflector array structure, wherein a number of the plurality of reconfigurable reflector units is different from a number of the at least one switch element.

2. 2. The system comprising the reconfigurable reflecting array structure of claim 1, wherein the plurality of reconfigurable reflecting units share the at least one phase-shift switch diode, the number of the plurality of reconfigurable reflecting units is different from the number of the at least one phase-shift switch diode, and the plurality of reconfigurable reflecting units are arranged in a one-dimensional array or a two-dimensional array.

3. 3. The system with the reconfigurable reflector array structure of claim 2, wherein a number of the plurality of reconfigurable reflector units is greater than a number of the at least one phase-shift switch diodes, a number of the plurality of reconfigurable reflector units is greater than a number of the at least one switch element, and a number of the at least one phase-shift switch diodes, a number of the at least one switch element, and a number of the at least one control unit are the same.

4. The plurality of reconfigurable reflective units include a first radiating portion connected to the at least one switch element; a second radiating portion connected between the first radiating portion and the at least one phase shift switch diode; A system comprising the reconfigurable reflectarray structure of claim 2 and a third radiator connected to the second radiator.

5. The at least one control unit generates at least one control signal, and the at least one switch element receives the at least one control signal and controls the plurality of reconfigurable reflective units based on the at least one control signal, and the system including the reconfigurable reflective array structure comprises:

2. The system with the reconfigurable reflective array structure of claim 1, further comprising a display layer electrically connected to the at least one switch element of the control layer and the at least one control unit and including at least one display element, the at least one display element receiving the at least one control signal and being controlled by the at least one control signal.

6. A portion of the plurality of reconfigurable reflective units is electrically connected to the at least one phase-shift switch diode, another portion of the plurality of reconfigurable reflective units is floating, and the emissive layer comprises: a plurality of further phase shift switch diodes; 2. The system comprising the reconfigurable reflector array structure of claim 1, further comprising: a plurality of further reconfigurable reflector units electrically connected to the plurality of further phase-shift switch diodes, respectively.

7. 1. A system comprising a Reconfigurable Reflect Array (RRA) structure, comprising: At least one first phase shift switch (P-Intrinsic-N, PIN) diode; at least one second phase shift switch diode; a plurality of first reconfigurable reflecting units, at least a portion of which is electrically connected to the at least one first phase shift switch diode; a plurality of second reconfigurable reflection units, a portion of which is electrically connected to the at least one second phase shift switch diode and another portion of which is left floating; a radiative layer including at least one first switch element electrically connected to the emissive layer; at least one second switch element electrically connected to the emissive layer; at least one first control unit electrically connected to the at least one first switch element; at least one second control unit electrically connected to the at least one second switch element; a control layer including: Including, A system comprising a reconfigurable reflective array structure, wherein a number of the plurality of first reconfigurable reflective units is different from a number of the at least one first switch element, and a number of the plurality of second reconfigurable reflective units is different from a number of the at least one second switch element.

8. The plurality of first reconfigurable reflection units share the at least one first phase-shift switch diode, the number of the plurality of first reconfigurable reflection units is different from the number of the at least one first phase-shift switch diode, and the plurality of first reconfigurable reflection units are arranged in a one-dimensional array or a two-dimensional array; and 8. The system comprising the reconfigurable reflector array structure of claim 7, wherein the number of the plurality of second reconfigurable reflector units is different from the number of the at least one second phase-shift switch diode, and the plurality of second reconfigurable reflector units are arranged in a one-dimensional array or a two-dimensional array.

9. the number of the plurality of first reconfigurable reflection units is greater than the number of the at least one first phase shift switch diodes, the number of the plurality of first reconfigurable reflection units is greater than the number of the at least one first switch element, the number of the at least one first phase shift switch diodes, the number of the at least one first switch element, and the number of the at least one first control unit are the same; 9. The system with a reconfigurable reflector array structure of claim 8, wherein a number of the plurality of second reconfigurable reflecting units is greater than a number of the at least one second phase-shift switch diode, a number of the plurality of second reconfigurable reflecting units is greater than a number of the at least one second switch element, and a number of the at least one second phase-shift switch diode is the same as a number of the at least one second switch element.

10. The plurality of first reconfigurable reflective units include: a first radiating portion connected to the at least one first switch element; a second radiating portion connected between the first radiating portion and the at least one first phase shift switch diode; A third radiating portion connected to the second radiating portion; Including, The plurality of second reconfigurable reflective units include: a fourth radiating portion connected to the at least one second switch element; a fifth radiator corresponding to the other portion of the plurality of second reconfigurable reflective units; A system comprising the reconfigurable reflective array structure of claim 8 .

11. The at least one first control unit generates at least one first control signal, the at least one first switch element receives the at least one first control signal and controls the plurality of first reconfigurable reflection units based on the at least one first control signal; and 11. The system comprising the reconfigurable reflectarray structure of claim 10, wherein the at least one second control unit generates at least one second control signal, and the at least one second switch element receives the at least one second control signal and controls the fourth radiating portion based on the at least one second control signal.

12. at least one first display element electrically connected to the at least one first switch element and the at least one first control unit of the control layer, to receive the at least one first control signal, and to be controlled by the at least one first control signal; at least one second display element electrically connected to the at least one second switch element and the at least one second control unit of the control layer, to receive the at least one second control signal, and to be controlled by the at least one second control signal; 12. A system comprising the reconfigurable reflective array structure of claim 11, further comprising a display layer comprising:

13. 1. A system comprising a Reconfigurable Reflect Array (RRA) structure, comprising: At least one first phase shift switch (P-Intrinsic-N, PIN) diode; a plurality of second phase shift switch diodes; a plurality of first reconfigurable reflecting units, at least a portion of which is electrically connected to the at least one first phase shift switch diode; a plurality of second reconfigurable reflecting units electrically connected to the plurality of second phase shift switch diodes, respectively; a radiative layer including at least one first switch element electrically connected to the emissive layer; at least one second switch element electrically connected to the emissive layer; at least one first control unit electrically connected to the at least one first switch element; at least one second control unit electrically connected to the at least one second switch element; a control layer including: Including, A system comprising a reconfigurable reflective array structure, wherein a number of the plurality of first reconfigurable reflective units is different from a number of the at least one first switch element, and a number of the plurality of second reconfigurable reflective units is different from a number of the at least one second switch element.

14. The plurality of first reconfigurable reflection units share the at least one first phase-shift switch diode, the number of the plurality of first reconfigurable reflection units is different from the number of the at least one first phase-shift switch diode, and the plurality of first reconfigurable reflection units are arranged in a one-dimensional array or a two-dimensional array; and 14. The system comprising the reconfigurable reflector array structure of claim 13, wherein the number of the plurality of second reconfigurable reflector units is the same as the number of the plurality of second phase-shift switch diodes, and the plurality of second reconfigurable reflector units are arranged in a one-dimensional array or a two-dimensional array.

15. the number of the plurality of first reconfigurable reflection units is greater than the number of the at least one first phase shift switch diodes, the number of the plurality of first reconfigurable reflection units is greater than the number of the at least one first switch element, the number of the at least one first phase shift switch diodes, the number of the at least one first switch element, and the number of the at least one first control unit are the same; 15. The system with a reconfigurable reflector array structure of claim 14, wherein a number of the plurality of second reconfigurable reflector units is greater than a number of the at least one second switch element, and a number of the plurality of second phase-shift switch diodes is greater than a number of the at least one second switch element.

16. The plurality of first reconfigurable reflective units include: a first radiating portion connected to the at least one first switch element; a second radiating portion connected between the first radiating portion and the at least one first phase shift switch diode; A third radiating portion connected to the second radiating portion; Including, The system with a reconfigurable reflector array structure according to claim 14 , wherein the plurality of second reconfigurable reflector units are connected to the at least one second switch element.

17. The at least one first control unit generates at least one first control signal, and the at least one first switch element receives the at least one first control signal and controls the plurality of first reconfigurable reflection units based on the at least one first control signal; 17. The system with the reconfigurable reflector array structure of claim 16, wherein the at least one second control unit generates at least one second control signal, and the at least one second switch element receives the at least one second control signal and controls the plurality of second reconfigurable reflector units based on the at least one second control signal.

18. at least one first display element electrically connected to the at least one first switch element and the at least one first control unit of the control layer, to receive the at least one first control signal, and to be controlled by the at least one first control signal; at least one second display element electrically connected to the at least one second switch element and the at least one second control unit of the control layer, to receive the at least one second control signal, and to be controlled by the at least one second control signal; 20. A system comprising the reconfigurable reflective array structure of claim 17, further comprising a display layer comprising:

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