Focusing unit, focusing device and communication equipment

Abstract

The invention discloses a focusing unit, a focusing device and communication equipment, and the focusing unit comprises a copper-clad part, the copper-clad part comprises a first copper-clad part and a second copper-clad part, the first copper-clad part is suitable for being arranged on the first side of a transparent substrate, the second copper-clad part is suitable for being arranged on the second side of the transparent substrate, and the first copper-clad part is arranged on the first side of the transparent substrate. The two opposite sides of the transparent substrate in the first direction are a first side and a second side respectively. Therefore, the projection of the second copper-clad piece in the first direction and the projection of the first copper-clad piece in the first direction are at least partially staggered and at least partially overlapped, so that not only can the high transmittance of the focusing unit be ensured, but also the focusing unit can be adjusted in a working frequency band to realize phase compensation of 0-360 degrees; in addition, the structure of the focusing unit can be simpler, the processing flow of the focusing unit is simplified, and further, the focusing effect of the focusing device can be improved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a focusing unit, a focusing device and communication equipment. Background Art

[0002] With the rapid development of communications technology, millimeter-wave frequency bands play a crucial role in 5G and next-generation wireless communications. While millimeter-wave frequency bands offer wider spectrum resources, faster communication rates, greater communication capacity, and lower communication latency, their higher frequencies result in significantly lower signal penetration than traditional Sub-6G, with greater signal attenuation and reduced signal strength, thus impacting communication quality.

[0003] In the related art, the focusing device has a complex structure, which increases the difficulty of processing the focusing device, and the focusing device is difficult to integrate with the glass. In addition, the transmittance of the focusing device in the existing technology is low, the phase shift angle is small, and the performance of the focusing device is poor. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a focusing unit that has a structure that not only has high transmittance but also can achieve a phase shift of 0 to 360 degrees and has a simpler structure.

[0005] The present invention further provides a focusing device.

[0006] The present invention further provides a communication device.

[0007] According to the present invention, the focusing unit includes: a copper clad member, the copper clad member includes a first copper clad member and a second copper clad member, the first copper clad member is suitable for being arranged on a first side of a transparent substrate, the second copper clad member is suitable for being arranged on a second side of the transparent substrate, the projection of the second copper clad member in the first direction and the projection of the first copper clad member in the first direction are at least partially staggered and at least partially overlapped with each other, wherein the two sides of the transparent substrate opposite to each other in the first direction are the first side and the second side respectively.

[0008] Therefore, by at least partially staggering and at least partially overlapping the projection of the second copper clad member in the first direction with the projection of the first copper clad member in the first direction, not only can the high transmittance of the focusing unit be ensured, but the focusing unit can also be adjusted within the working frequency band to achieve phase compensation of 0 to 360°. In addition, the structure of the focusing unit can be made simpler, the processing flow of the focusing unit can be simplified, and further, the focusing effect of the focusing device can be improved.

[0009] In some examples of the present invention, the first copper-clad member includes a plurality of first sub-copper-clad members, the plurality of first sub-copper-clad members are arranged at intervals, and a first gap opening is defined between two adjacent first sub-copper-clad members; The second copper clad member includes a plurality of second sub-copper clad members, which are arranged at intervals. A second gap opening is defined between two adjacent second sub-copper clad members, and a projection of the first gap opening in the first direction and a projection of the second gap opening in the first direction are at least partially staggered with each other.

[0010] In some examples of the present invention, there are multiple first gap openings, and there is at least one first gap opening at both ends of the first side of the transparent substrate in the second direction, and there is at least one first gap opening at both ends of the first side of the transparent substrate in the third direction, wherein the first direction, the second direction and the third direction are staggered with each other.

[0011] In some examples of the present invention, the first gap openings located at two ends of the first side in the second direction are arranged opposite to each other, and the first gap openings located at two ends of the first side in the third direction are arranged opposite to each other.

[0012] In some examples of the present invention, the first gap openings at both ends of the first side of the transparent substrate in the second direction correspond to the midline of the transparent substrate extending in the second direction; and the first gap openings at both ends of the first side of the transparent substrate in the third direction correspond to the midline of the transparent substrate extending in the third direction.

[0013] In some examples of the present invention, the first sub-copper clad member includes a first copper clad segment and a second copper clad segment, the first copper clad segment extends in the second direction, and the first end of the first copper clad segment in the second direction defines the first gap opening with the adjacent first sub-copper clad member, and the second end of the first copper clad segment in the second direction is adjacent to the edge of the transparent substrate; the second copper clad segment extends in the third direction, and the first gap opening is defined between the first end of the second copper clad segment in the third direction and the adjacent first sub-copper clad member, the second end of the second copper clad segment in the third direction is adjacent to the edge of the transparent substrate, and the second end of the first copper clad segment in the second direction is connected to the second end of the second copper clad segment in the third direction.

[0014] In some examples of the present invention, the second gap opening includes a first gap segment and a second gap segment, the first gap segment extends in the second direction, the first end of the first gap segment in the second direction is adjacent to the second copper cladding extending in the second direction, and the second end of the first gap segment in the second direction is arranged adjacent to the edge of the transparent substrate; the second gap segment extends in the third direction, the first end of the second gap segment in the third direction is adjacent to the second copper cladding extending in the third direction, the second end of the second gap segment in the third direction is arranged adjacent to the edge of the transparent substrate, and the second end of the first gap segment in the second direction is connected to the second end of the second gap segment in the third direction.

[0015] In some examples of the present invention, there are multiple second gap openings, and there is at least one second gap segment at both ends of the second side of the transparent substrate in the second direction, and there is at least one first gap segment at both ends of the second side of the transparent substrate in the third direction, wherein the first direction, the second direction and the third direction are staggered with each other.

[0016] In some examples of the present invention, the second gap segments at both ends of the second side of the transparent substrate in the second direction are oppositely arranged, and the first gap segments at both ends of the second side of the transparent substrate in the third direction are oppositely arranged.

[0017] In some examples of the present invention, the plurality of second gap openings on the second side of the transparent substrate are disposed adjacent to a plurality of end corners of the second side of the transparent substrate.

[0018] In some examples of the present invention, the first sub-copper-clad member includes a plurality of copper-clad branches, and the plurality of copper-clad branches are arranged in an interlaced manner.

[0019] In some examples of the present invention, the second sub-copper-clad member includes a plurality of copper-clad branches, and the plurality of copper-clad branches are arranged in an interlaced manner.

[0020] In some examples of the present invention, the first sub-copper-clad component and the second sub-copper-clad component both include a copper-clad frame. In each of the first sub-copper-clad component or each of the second sub-copper-clad component, the copper-clad frame is arranged around the outside of the edges of the plurality of copper-clad branches and encloses the plurality of copper-clad branches.

[0021] In some examples of the present invention, the transparent substrate includes a transparent medium and a transparent film, the transparent film is arranged on both sides of the transparent medium in a first direction, and the first copper clad part and the second copper clad part are respectively arranged on the transparent film on both sides of the transparent medium in the first direction.

[0022] In some examples of the present invention, the transparent film is bonded and fixed to the transparent medium.

[0023] A focusing device according to an embodiment of the present invention includes: a plurality of the focusing units described above.

[0024] A communication device according to an embodiment of the present invention includes: the focusing device described above.

[0025] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which: Figure 1 is a schematic diagram of a focusing unit according to an embodiment of the present invention; Figure 2 is a cross-sectional view of a focusing unit according to an embodiment of the present invention; Figure 3 is a schematic diagram of a focusing unit according to an embodiment of the present invention; Figure 4 is a schematic diagram of a focusing unit according to an embodiment of the present invention; Figure 5 is a schematic diagram of a focusing unit according to an embodiment of the present invention; Figure 6 is a schematic diagram of a focusing unit according to an embodiment of the present invention; Figure 7 is a schematic diagram of a focusing device according to an embodiment of the present invention; Figure 8 is a schematic diagram of a focusing device according to an embodiment of the present invention; Figure 9 is a schematic diagram of the effect of a focusing device according to an embodiment of the present invention; Figure 10 is a schematic diagram for verifying a focusing device according to an embodiment of the present invention; Figure 11 1-8 units of the deflection array according to an embodiment of the present invention; Figure 12 28 GHz is an electric field distribution diagram of the XOZ plane according to an embodiment of the present invention; Figure 13 28 GHz is an electric field distribution diagram of the XOY plane at Z=-64.5 mm according to an embodiment of the present invention; Figure 14 is a schematic diagram of Huygens resonance generation according to an embodiment of the present invention; Figure 15 is a schematic diagram of changes in transmission phase and transmission amplitude of different focusing units according to an embodiment of the present invention; Figure 16 is the distribution of electric field energy intensity along the Z direction at a frequency of 28 GHz according to an embodiment of the present invention; Figure 17 2. It is a schematic diagram of the focusing gain effect after the antenna is loaded with a metasurface according to an embodiment of the present invention; Figure 18 2 is a schematic diagram of the focusing gain effect after the antenna is loaded with a metasurface according to an embodiment of the present invention.

[0027] Reference numerals: 100. Focusing unit; 200, focusing device; 10. Transparent substrate; 101. First side; 102. Second side; 103. End angle; 104. Transparent medium; 105. Transparent film; 106. Adhesive; 20. Copper clad part; 201. First copper clad part; 202. Second copper clad part; 203. Copper clad branch; 204. Copper clad frame; 2011, first sub-copper clad component; 2012, first copper clad segment; 2013, second copper clad segment; 2021, second sub-copper clad component; 301, first gap opening; 302, second gap opening; 3021, first gap section; 3022, second gap section; 40, phase gradient; 50, antenna; 60, focal length. DETAILED DESCRIPTION

[0028] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0029] Reference below Figures 1-18 The focusing unit 100 according to an embodiment of the present invention is described. The focusing unit 100 can be used to constitute a focusing device 200, and the focusing device 200 can be applied to communication equipment.

[0030] Combine Figures 1-18 As shown, the focusing unit 100 according to the present invention may mainly include: a copper clad member 20. The copper clad member 20 includes a first copper clad member 201 and a second copper clad member 202. The first copper clad member 201 is suitable for being arranged on the first side 101 of the transparent substrate 10, and the second copper clad member 202 is suitable for being arranged on the second side 102 of the transparent substrate 10. The projection of the second copper clad member 202 in the first direction and the projection of the first copper clad member 201 in the first direction are at least partially staggered and at least partially overlapped with each other. The two sides of the transparent substrate 10 facing each other in the first direction are the first side 101 and the second side 102 respectively.

[0031] The transparent substrate 10 not only has good light transmittance and allows electromagnetic waves to pass through, but also plays a supporting role for the structure of the focusing unit 100 , thereby ensuring the stability and reliability of the focusing unit 100 .

[0032] Furthermore, the two sides of the transparent substrate 10 opposite to each other in the first direction are set to be a first side 101 and a second side 102, wherein the first side 101 and the second side 102 are both two flat planes, and one of the first side 101 and the second side 102 is used as an incident surface, and the other side is used as an exit surface. In this way, the light transmission effect of the transparent substrate 10 can be ensured, and the rationality of the structural setting of the focusing unit 100 can be ensured.

[0033] It should be noted that, in some embodiments of the present invention, the transparent substrate 10 is a single-layer transparent medium substrate.

[0034] Furthermore, the copper clad 20 includes a first copper clad 201 and a second copper clad 202. The first copper clad 201 is adapted to be disposed on the first side 101 of the transparent substrate 10, and the second copper clad 202 is adapted to be disposed on the second side 102 of the transparent substrate 10. Specifically, when electromagnetic waves are transmitted or processed within the focusing unit 100, the copper clad 20 can act as a barrier, effectively reducing electromagnetic interference between the interior and exterior of the focusing unit 100, thereby ensuring the integrity and stability of electromagnetic wave signal transmission within the focusing unit 100. Furthermore, the copper clad 20 also helps enhance the structural strength of the focusing unit 100.

[0035] Furthermore, the projection of the second copper clad 202 in the first direction is at least partially offset from and at least partially overlaps with the projection of the first copper clad 201 in the first direction. Specifically, the second copper clad 202 and the first copper clad 201 are offset and overlapped to a certain extent in the first direction. Thus, under the excitation of an external electromagnetic wave, the second copper clad 202 and the first copper clad 201 generate orthogonal tangential currents and magnetic fluxes. When the equilibrium condition is met between the second copper clad 202 and the first copper clad 201, impedance matching between the surface equivalent impedance of the copper clad 20 and the electromagnetic wave can be achieved, thereby exciting Huygens resonance.

[0036] Furthermore, by adjusting the area of the overlapping area and the misaligned area between the second copper clad part 202 and the first copper clad part 201 in the first direction, not only can the higher transmittance of the focusing unit 100 be ensured, but the focusing device 200 can also achieve phase compensation of 0 to 360° within the working frequency band.

[0037] Therefore, by at least partially staggering and at least partially overlapping the projection of the second copper clad member 202 in the first direction with the projection of the first copper clad member 201 in the first direction, not only can the high transmittance of the focusing unit 100 be ensured, but the focusing unit 100 can also be adjusted within the working frequency band to achieve phase compensation of 0 to 360°. In addition, the structure of the focusing unit 100 can be made simpler, the processing flow of the focusing unit 100 can be simplified, and further, the focusing effect of the focusing device 200 can be improved.

[0038] Combine Figure 1 、 Figure 3 and Figure 4 As shown, the first copper clad member 201 includes a plurality of first sub-copper clad members 2011, which are arranged at intervals, and a first gap opening 301 is defined between two adjacent first sub-copper clad members 2011; the second copper clad member 202 includes a plurality of second sub-copper clad members 2021, which are arranged at intervals, and a second gap opening 302 is defined between two adjacent second sub-copper clad members 2021, and the projection of the first gap opening 301 in the first direction and the projection of the second gap opening 302 in the first direction are at least partially staggered with each other.

[0039] Specifically, the structure of the first sub-copper clad member 2011 is L-shaped, and the structure of the second sub-copper clad member 2021 is a rectangular strip of equal width. There is a certain distance between each of the multiple first sub-copper clad members 2011 and the multiple second sub-copper clad members 2021. A first gap opening 301 is defined between two adjacent first sub-copper clad members 2011, and a second gap opening 302 is defined between two adjacent second sub-copper clad members 2021. In this way, the transmittance of electromagnetic waves at the gap opening can be higher, and the transmission path of the electromagnetic waves can be better controlled through the gap opening, thereby improving the focusing effect of the focusing unit 100.

[0040] Furthermore, the projection of the first gap opening 301 in the first direction and the projection of the second gap opening 302 in the first direction are at least partially staggered with each other, so that a magnetic response can be excited between the first copper clad part 201 and the second copper clad part 202, thereby enabling the focusing unit 100 to achieve Huygens resonance and improving the transmittance of the focusing unit 100.

[0041] In some embodiments of the present invention, during the design and debugging phase, the performance of the focusing unit 100 can be optimized more flexibly by adjusting the intervals between the multiple first sub-copper clad members 2011 and the multiple second sub-copper clad members 2021 .

[0042] In some embodiments of the present invention, the first sub-copper clad member 2011 and the second sub-copper clad member 2021 have the same width, and the width can be preferably selected as 0.2 mm. In addition, when meeting the structural design requirements, the first sub-copper clad member 2011 and the second sub-copper clad member 2021 can also be set as structural members with different widths, and the first sub-copper clad member 2011 and the second sub-copper clad member 2021 can also be set as structural members with different widths.

[0043] Combine Figure 1 、 Figure 3 and Figure 5 As shown, there are multiple first gap openings 301 , at least one first gap opening 301 exists at both ends of the first side 101 of the transparent substrate 10 in the second direction, and at least one first gap opening 301 exists at both ends of the first side 101 of the transparent substrate 10 in the third direction.

[0044] Such an arrangement can not only ensure the rationality of the arrangement of the first gap opening 301 , but also ensure the rationality of the structural arrangement of the focusing unit 100 , and can ensure the transmittance and reliability of the focusing unit 100 .

[0045] The first direction, the second direction and the third direction are arranged to be staggered with each other. Specifically, under the premise of meeting the structural design requirements, the first direction, the second direction and the third direction can be at any angle.

[0046] Combine Figure 1 、 Figure 3 and Figure 5 As shown, the first gap openings 301 located at both ends of the first side 101 in the second direction are arranged opposite to each other, and the first gap openings 301 located at both ends of the first side 101 in the third direction are arranged opposite to each other.

[0047] Specifically, there is a gap opening at each end of the first side 101 of the transparent substrate 10 in the second direction, and the two first gap openings 301 are arranged opposite to each other. In addition, there is a gap opening at each end of the first side 101 of the transparent substrate 10 in the third direction, and the two first gap openings 301 are arranged opposite to each other. This can not only further ensure the rationality of the structural setting of the focusing unit 100, ensure the transmittance and focusing effect of the focusing unit 100, but also improve the aesthetics of the focusing unit 100.

[0048] In some embodiments of the present invention, the first gap openings 301 have the same size. In addition, the size of each first gap opening 301 can be adjusted according to specific circumstances while meeting structural design requirements.

[0049] Combine Figure 1 、 Figure 3 and Figure 5As shown, the first gap openings 301 at both ends of the first side 101 of the transparent substrate 10 in the second direction correspond to the midline of the transparent substrate 10 extending in the second direction; the first gap openings 301 at both ends of the first side 101 of the transparent substrate 10 in the third direction correspond to the midline of the transparent substrate 10 extending in the third direction.

[0050] Specifically, when the first direction, the second direction and the third direction are arranged perpendicular to each other, the first gap openings 301 existing at both ends of the first side 101 of the transparent substrate 10 in the second direction are respectively located at the center positions of the two ends, and the center position of the gap opening is corresponding to the midline of the transparent substrate 10 extending in the second direction. Similarly, the first gap openings 301 existing at both ends of the first side 101 of the transparent substrate 10 in the third direction are respectively located at the center positions of the two ends, and the center position of the gap opening is corresponding to the midline of the transparent substrate 10 extending in the third direction. In this way, the structural design of the focusing unit 100 can be optimized, making the structure of the focusing unit 100 simpler and more intuitive. Furthermore, not only can the high transmittance and phase compensation realization conditions of the focusing unit 100 be guaranteed, but the aesthetics of the focusing unit 100 can also be improved.

[0051] Combine Figure 1 、 Figure 3 and Figure 5 As shown, the first sub-copper clad component 2011 includes a first copper clad segment 2012 and a second copper clad segment 2013. The first copper clad segment 2012 extends in the second direction, and a first gap opening 301 is defined between the first end of the first copper clad segment 2012 in the second direction and the adjacent first sub-copper clad component 2011. The second end of the first copper clad segment 2012 in the second direction is adjacent to the edge of the transparent substrate 10; the second copper clad segment 2013 extends in the third direction, and a first gap opening 301 is defined between the first end of the second copper clad segment 2013 in the third direction and the adjacent first sub-copper clad component 2011. The second end of the second copper clad segment 2013 in the third direction is adjacent to the edge of the transparent substrate 10, and the second end of the first copper clad segment 2012 in the second direction is connected to the second end of the second copper clad segment 2013 in the third direction.

[0052] Such a setting can not only regulate the transmittance of the circumferential edge of the transparent substrate 10 without affecting the electromagnetic wave transmittance at the center position of the first side 101 of the transparent substrate 10, but also optimize the formation effect of the magnetic field and electric field of the focusing unit 100. Furthermore, the magnetic field and electric field generated by the focusing unit 100 can be better regulated, thereby improving the focusing effect of the focusing unit 100.

[0053] Combine Figure 1 、 Figure 4 and Figure 6As shown, the second gap opening 302 includes a first gap segment 3021 and a second gap segment 3022, the first gap segment 3021 extends in the second direction, the first end of the first gap segment 3021 in the second direction is adjacent to the second copper clad member 202 extending in the second direction, and the second end of the first gap segment 3021 in the second direction is arranged adjacent to the edge of the transparent substrate 10; the second gap segment 3022 extends in the third direction, the first end of the second gap segment 3022 in the third direction is adjacent to the second copper clad member 202 extending in the third direction, the second end of the second gap segment 3022 in the third direction is arranged adjacent to the edge of the transparent substrate 10, and the second end of the first gap segment 3021 in the second direction is connected to the second end of the second gap segment 3022 in the third direction.

[0054] With such a configuration, the second gap opening 302 can cooperate with the first copper cladding 201 to jointly complete the regulation of the transmittance of the focusing unit 100, thereby not only being able to regulate the transmittance of electromagnetic waves at the center position of the first side 101 and the second side 102 of the transparent substrate 10 without affecting the transmittance of electromagnetic waves at the center position of the first side 101 and the second side 102 of the transparent substrate 10, but also being able to optimize the formation effect of the magnetic field and electric field of the overall focusing unit 100. Furthermore, the magnetic field and electric field generated by the focusing unit 100 can be better regulated, which can help the focusing unit 100 to achieve 0 to 360° phase compensation through adjustment within the working frequency band, and can help to improve the focusing effect of the focusing device 200 on electromagnetic waves.

[0055] Combine Figure 1 、 Figure 4 and Figure 6 As shown, there are multiple second gap openings 302. At least one second gap segment 3022 is present at both ends of the second side 102 of the transparent substrate 10 in the second direction, and at least one first gap segment 3021 is present at both ends of the second side 102 of the transparent substrate 10 in the third direction. The gaps are arranged alternately in the first, second, and third directions. This arrangement not only ensures the rationality of the arrangement of the second gap openings 302, but also ensures the rationality of the structural arrangement of the focusing unit 100, thereby ensuring the transmittance and reliability of the focusing unit 100.

[0056] The first direction, the second direction and the third direction are arranged to be staggered with each other. Specifically, under the premise of meeting the structural design requirements, the first direction, the second direction and the third direction can be at any angle.

[0057] Combine Figure 1 、 Figure 4 and Figure 6As shown, the second gap sections 3022 at both ends of the second side 102 of the transparent substrate 10 in the second direction are arranged opposite to each other, and the first gap sections 3021 at both ends of the second side 102 of the transparent substrate 10 in the third direction are arranged opposite to each other. This arrangement not only further ensures the rationality of the structural arrangement of the focusing unit 100, ensures the transmittance and focusing effect of the focusing unit 100, but also improves the aesthetics of the focusing unit 100.

[0058] In some embodiments of the present invention, the second gap openings 302 have the same size. In addition, the size of each second gap opening 302 can be adjusted according to specific circumstances while meeting structural design requirements.

[0059] Combine Figure 1 、 Figure 4 and Figure 6 As shown, the plurality of second gap openings 302 on the second side 102 of the transparent substrate 10 are arranged adjacent to the plurality of end corners 103 of the second side 102 of the transparent substrate 10. Specifically, the second sub-copper cladding members 2021 are arranged corresponding to the midline of the transparent substrate 10 extending in the second and third directions, and the second gap openings 302 defined between two adjacent second sub-copper cladding members 2021 are arranged adjacent to the plurality of end corners 103 of the second side 102 of the transparent substrate 10. This allows the projections of the second gap openings 302 in the first direction to be at least partially offset from the projections of the first gap openings 301 in the first direction, thereby ensuring the rationality and reliability of the structural arrangement of the focusing unit 100.

[0060] Combine Figure 1 、 Figure 5 and Figure 6 As shown, the first copper-clad sub-component 2011 includes a plurality of copper-clad branches 203, which are arranged in an interlaced manner. Specifically, the first copper-clad sub-component 2011 itself is not light-transmissive. By partially hollowing out the first copper-clad sub-component 2011, the copper-clad surface of the first copper-clad sub-component 2011 is converted into copper-clad wires, thereby reducing the copper-clad area of the first copper-clad sub-component 2011. This makes the first copper-clad sub-component 2011 light-transmissive, further improving the transmittance of the focusing unit 100 to electromagnetic waves.

[0061] Combine Figure 1 、 Figure 5 and Figure 6As shown, the second copper-clad sub-component 2021 includes a plurality of copper-clad branches 203, which are arranged in an interlaced manner. Specifically, the second copper-clad sub-component 2021 itself is not light-transmissive. By partially hollowing out the second copper-clad sub-component 2021, the copper-clad surface of the second copper-clad sub-component 2021 is converted into copper-clad wires, thereby reducing the copper-clad area of the second copper-clad sub-component 2021. This makes the second copper-clad sub-component 2021 light-transmissive, further improving the transmittance of the focusing unit 100 to electromagnetic waves.

[0062] Combine Figure 1 、 Figure 5 and Figure 6 As shown, both the first copper-clad sub-assembly 2011 and the second copper-clad sub-assembly 2021 include a copper-clad frame 204. In each first copper-clad sub-assembly 2011 or each second copper-clad sub-assembly 2021, the copper-clad frame 204 surrounds the outer edges of the plurality of copper-clad branches 203 and encloses the plurality of copper-clad branches 203. This arrangement, enclosing the copper-clad branches 203 within the copper-clad frame 204, not only ensures the electromagnetic performance of the first copper-clad sub-assembly 2011 and the second copper-clad sub-assembly 2021, but also enhances the structural stability of the first copper-clad sub-assembly 2011 and the second copper-clad sub-assembly 2021, making them less susceptible to breakage and deformation.

[0063] In some embodiments of the present invention, the length and width of the hollow portion of the copper-clad branch 203 in the copper-clad frame 204 are smaller than one tenth of the wavelength corresponding to the maximum operating frequency.

[0064] Combine Figure 1 and Figure 2 As shown, the transparent substrate 10 includes a transparent medium 104 and a transparent film 105. The transparent film 105 is disposed on both sides of the transparent medium 104 in a first direction. The first copper clad member 201 and the second copper clad member 202 are respectively disposed on the transparent film 105 on both sides of the transparent medium 104 in the first direction. Specifically, the first copper clad member 201 and the second copper clad member 202 are first disposed on the transparent film 105, and then the transparent film 105 is disposed on the transparent medium 104, thereby achieving a fixed connection between the first copper clad member 201 and the second copper clad member 202 and the transparent substrate 10. This not only prevents the first copper clad member 201 and the second copper clad member 202 from deflecting or breaking when fixedly connected to the transparent medium 104, but also ensures the stability of the first copper clad member 201 and the second copper clad member 202.

[0065] In some embodiments of the present invention, the transparent substrate 10 may be made of PET and / or glass. When manufacturing the focusing unit 100 , a suitable transparent substrate 10 material should be selected according to specific requirements.

[0066] Combine Figure 1 and Figure 2 As shown, the transparent film 105 is bonded and fixed to the transparent medium 104. Specifically, the two transparent films 105 are bonded and fixed to the first side 101 and the second side 102 of the transparent medium 104 respectively by the adhesive 106. This not only makes the connection between the transparent film 105 and the transparent medium 104 simple and direct, but also ensures that the connection between the transparent film 105 and the transparent medium 104 is stable and reliable, further improving the stability and reliability of the focusing unit 100 structure.

[0067] In some embodiments of the present invention, the adhesive material 106 may be OCA glue.

[0068] Combine Figures 1-6 As shown, the focusing unit 100 in the present invention can excite a magnetic response between the first copper clad member 201 and the second copper clad member 202 by setting a certain misalignment area and a certain overlapping area between the first copper clad member 201 and the second copper clad member 202, thereby realizing Huygens resonance.

[0069] Specifically, the first copper clad member 201 on the first side 101 is designed as a rectangular ring having a first gap opening 301. The first gap opening 301 can be located at the center of a rectangular side, and the first gap openings 301 are symmetrically arranged. The second copper clad member 202 on the second side 102 is designed as a rectangular strip and is arranged directly below the first copper clad member 201 in the first direction. The projection of the first gap opening 301 in the first direction and the projection of the second gap opening 302 in the first direction are at least partially offset from each other.

[0070] Furthermore, by adjusting the size of the first gap opening 301 in the rectangular ring of the first copper clad part 201 and the structural length of the second sub-copper clad part 2021 of the second copper clad part 202, a certain misalignment area and a certain overlapping area are created between the first copper clad part 201 and the second copper clad part 202. In this way, currents in opposite directions are generated between the first copper clad part 201 and the second copper clad part 202, thereby forming a circulating current and causing odd-mode coupling, thereby inducing the generation of a magnetic response. When the magnetic response generated in the focusing unit 100 interacts with the existing electric response to reach a state of equilibrium, Huygens resonance can be achieved, thereby achieving efficient transmission at the resonant frequency, and enabling the structure of the focusing unit 100 to achieve a higher transmission amplitude of electromagnetic waves while being able to achieve 360° phase compensation.

[0071] Furthermore, the effect of Huygens resonance is shown in the figure below. Figure 14As shown, when only the first copper clad 201 or the second copper clad 202 exists on the focusing unit 100, the transmittance is very low near 27 GHz, where the transmittance S21 <-20 dB. When both the first copper clad 201 and the second copper clad 202 exist on the focusing unit 100, the interaction between the magnetic response generated by the focusing unit 100 and the electrical response of the focusing unit 100 itself can reach a state of equilibrium, thereby exciting Huygens resonance and having efficient transmission at the resonant frequency, and the transmittance S21 >-1 dB.

[0072] It should be noted that in Figure 14 In the figure, area A represents the transmittance diagram when only the first copper clad 201 exists; area B represents the transmittance diagram when only the second copper clad 202 exists; area C represents the transmittance diagram of the Huygens metasurface unit when both the first copper clad 201 and the second copper clad 202 exist.

[0073] Combine Figure 7 、 Figure 8 and Figure 10 As shown, the focusing device 200 according to the present invention can primarily include: a plurality of the aforementioned focusing units 100. Specifically, by adjusting the size of the first gap opening 301 in the first copper clad member 201 and the structural length of the second sub-copper clad member 2021 in the second copper clad member 202, eight focusing units 100 with different phases can be configured. The eight focusing units 100 with different phases are then arranged sequentially from the inside out according to a phase gradient 40 to form a 15*15 focusing array, thereby forming the focusing device 200. This arrangement not only ensures high transmittance of the focusing device 200, but also enables the focusing device 200 to achieve phase compensation of 0 to 360° within the operating frequency band.

[0074] It should be noted that each circle of the focusing device 200 comprises the same type of focusing unit 100 .

[0075] Further, combined with Figure 15 As shown, by adjusting the size of the first gap opening 301 in the first copper clad member 201 and the structural length of the second sub-copper clad member 2021 in the second copper clad member 202, the transmission phases of the eight focusing units 100 can be made different, and the transmission phases of the eight focusing units 100 can form a certain phase gradient 40 change, and the transmission amplitude can also be cycled within a certain range, thereby achieving phase compensation of 0 to 360° and a higher transmittance. Specifically, the array of the present focusing device 200 adopts an array arrangement with a 45° phase gradient 40 change, and its transmission phase and transmission amplitude change with the size of the first gap opening 301 and the structural length of the second copper clad member 202 as shown in Table 1 below. As shown in Table 1 below, focusing units 1 to 8 can achieve phase compensation of 0 to 360°.

[0076]

[0077] Table 1 Transmission phase and amplitude changes of different focusing units It should be noted that there are small errors in the data in Table 1.

[0078] Furthermore, according to the generalized law of refraction, when electromagnetic waves are incident vertically, the phase change rate on the medium interface can be To achieve the deflection of the transmitted electromagnetic beam. Since both sides of the metasurface array are vacuum by default, there is , so the electromagnetic wave deflection angle Phase change rate at the junction The following relationship exists: (1) Furthermore, the deflection array is formed by using the metasurface units with phase gradients of the focusing units 100 numbered 1 to 8 differing by 45°. The deflection angle can be calculated according to formula (1): for: (2) Further, combined with Figure 11 As shown, the metasurface units numbered 1 to 8 are arranged in this order and substituted into the CST simulation software. With plane wave incident, the simulated electric field is as follows: Figure 11 As shown, Figure 11 The α in the equation is 15.2°. The simulation results show that the deflection array achieves a 15.2° deflection of the plane electromagnetic wave, which is basically consistent with the deflection of 15.5° calculated by equation (2).

[0079] Further, combined with Figure 9 As shown in Figure 1, when a plane wave is incident perpendicularly on a metasurface structure, in order to achieve a focusing effect when the electromagnetic wave leaves the metasurface, the metasurface structure is required to compensate for the phase of the transmitted electromagnetic wave so that the phase of the electromagnetic wave is arranged according to a specific gradient when leaving the metasurface structure. According to the relevant knowledge of geometric optics, the phase distribution of the electromagnetic wave when leaving any point (x, y) on the metasurface needs to satisfy formula (3): (3) It should be noted that in formula (3): is the wavelength of the electromagnetic wave in vacuum; f is the focal length; is the phase of the transmitted electromagnetic wave at the origin (i.e. x=0, y=0), and the focus position f can be calculated by formulas (2) and (3).

[0080] Further, combined with Figure 12 、 Figure 13 and Figure 16As shown, the above-mentioned eight focusing units 100 are arranged in a metasurface deflection array as a basis, and the focusing units 100 are arranged into a 15*15 metasurface array at a gradient of 45°, thereby forming a focusing device 200, the size of which can be 75*75*1.5mm. The phase of the focusing units in the metasurface array increases from -176.3° to 142° from the inside to the outside with a phase gradient of 45°. The array is placed in CST for simulation, and a plane wave is set to the XY direction and incident on the metasurface array along the -Z axis. At 28GHz, the electric field distribution diagram of its XOZ surface is as follows Figure 12 As shown. Figure 16 It can be seen that the electric field energy intensity reaches its maximum value near Z=-64.5mm, indicating that the focusing point of the metasurface array is 64.5mm away from the metasurface array. Figure 13 It can be seen that the electric field has a good focusing effect at Z=-64.5mm.

[0081] Further, combined with Figure 10 、 Figure 17 and Figure 18 As shown, the focusing effect of the metasurface array can be simulated and verified using antenna 50. The antenna 50 is placed at the focal position of the focusing array to check the effect of the focusing array on the gain of the antenna 50. According to the principle of reversibility of the optical path, the effect of the gain improvement of the antenna 50 is the focusing effect of the focusing array on the electromagnetic wave. The antenna 50 is placed at the focal position of the metasurface of the focusing device 200. The distance between the antenna 50 and the metasurface is the focal length 60. Figure 17 It can be seen that after loading the metasurface focusing array, the gain of antenna 50 is significantly improved, with a gain increase of 13 dB. From the reversibility, it can be seen that the focusing effect of the metasurface focusing array can also achieve an improvement of 13 dB.

[0082] It should be noted that Figure 17 Figure 1 is the simulation effect diagram after loading the metasurface, and Figure 2 is the simulation effect diagram without loading the metasurface.

[0083] According to the focusing device 200 of the present invention, since the structural design of the focusing unit 100 is simpler and more flexible, it can not only ensure a higher transmittance, but also achieve phase compensation of 0 to 360 degrees through structural adjustment. Applying the focusing unit 100 to the focusing device 200 can effectively improve the focusing effect of the focusing device 200 and optimize the structural design and working performance of the focusing device 200.

[0084] The communication device according to the present invention may mainly include: the aforementioned focusing device 200. Specifically, because the focusing device 200 has a better focusing effect and good working performance, applying the focusing device 200 to the communication device can improve the signal strength or signal quality of the communication device and optimize the working performance of the communication device.

[0085] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0086] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0087] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A focusing unit, characterized in that: include: A copper-clad member (20), the copper-clad member (20) comprising a first copper-clad member (201) and a second copper-clad member (202), the first copper-clad member (201) being suitable for being arranged on a first side (101) of a transparent substrate (10), the second copper-clad member (202) being suitable for being arranged on a second side (102) of the transparent substrate (10), the projection of the second copper-clad member (202) in the first direction and the projection of the first copper-clad member (201) in the first direction being at least partially staggered and at least partially overlapping, wherein two sides of the transparent substrate (10) opposite to each other in the first direction are the first side (101) and the second side (102), respectively.

2. The focusing unit according to claim 1, characterized in that The first copper-clad component (201) comprises a plurality of first sub-copper-clad components (2011), the plurality of first sub-copper-clad components (2011) being arranged at intervals, and a first gap opening (301) is defined between two adjacent first sub-copper-clad components (2011); The second copper-clad component (202) comprises a plurality of second sub-copper-clad components (2021), the plurality of second sub-copper-clad components (2021) being arranged at intervals, a second gap opening (302) being defined between two adjacent second sub-copper-clad components (2021), and a projection of the first gap opening (301) in the first direction and a projection of the second gap opening (302) in the first direction being at least partially staggered with each other.

3. The focusing unit according to claim 2, characterized in that There are a plurality of first gap openings (301), and at least one first gap opening (301) exists at both ends of the first side (101) of the transparent substrate (10) in the second direction, and at least one first gap opening (301) exists at both ends of the first side (101) of the transparent substrate (10) in the third direction, wherein the first direction, the second direction, and the third direction are arranged in an interlaced manner.

4. The focusing unit according to claim 3, characterized in that The first gap openings (301) located at two ends of the first side (101) in the second direction are arranged opposite to each other, and the first gap openings (301) located at two ends of the first side (101) in the third direction are arranged opposite to each other.

5. The focusing unit according to claim 3, characterized in that The first gap openings (301) at both ends of the first side (101) of the transparent substrate (10) in the second direction correspond to a midline of the transparent substrate (10) extending in the second direction; The first gap openings (301) at both ends of the first side (101) of the transparent substrate (10) in the third direction correspond to a midline of the transparent substrate (10) extending in the third direction.

6. The focusing unit according to claim 2, characterized in that The first sub-copper-clad component (2011) comprises a first copper-clad segment (2012) and a second copper-clad segment (2013), the first copper-clad segment (2012) extending in the second direction, a first gap opening (301) being defined between a first end of the first copper-clad segment (2012) in the second direction and an adjacent first sub-copper-clad component (2011), and the second end of the first copper-clad segment (2012) in the second direction being adjacent to an edge of the transparent substrate (10); The second copper-clad segment (2013) extends in a third direction, and a first gap opening (301) is defined between a first end of the second copper-clad segment (2013) in the third direction and the adjacent first sub-copper-clad component (2011); a second end of the second copper-clad segment (2013) in the third direction is adjacent to an edge of the transparent substrate (10), and a second end of the first copper-clad segment (2012) in the second direction is connected to a second end of the second copper-clad segment (2013) in the third direction.

7. The focusing unit according to claim 2, characterized in that The second gap opening (302) comprises a first gap section (3021) and a second gap section (3022), the first gap section (3021) extending in the second direction, a first end of the first gap section (3021) in the second direction being adjacent to the second copper-clad member (202) extending in the second direction, and a second end of the first gap section (3021) in the second direction being arranged adjacent to an edge of the transparent substrate (10); The second gap segment (3022) extends in a third direction, a first end of the second gap segment (3022) in the third direction is adjacent to the second copper-clad component (202) extending in the third direction, a second end of the second gap segment (3022) in the third direction is arranged adjacent to an edge of the transparent substrate (10), and a second end of the first gap segment (3021) in the second direction is connected to a second end of the second gap segment (3022) in the third direction.

8. The focusing unit according to claim 7, characterized in that There are multiple second gap openings (302), and at least one second gap segment (3022) exists at both ends of the second side (102) of the transparent substrate (10) in the second direction, and at least one first gap segment (3021) exists at both ends of the second side (102) of the transparent substrate (10) in the third direction, wherein the first direction, the second direction, and the third direction are arranged in an interlaced manner.

9. The focusing unit according to claim 8, characterized in that The second gap sections (3022) at both ends of the second side (102) of the transparent substrate (10) in the second direction are arranged relative to each other, and the first gap sections (3021) at both ends of the second side (102) of the transparent substrate (10) in the third direction are arranged relative to each other.

10. The focusing unit according to claim 9, characterized in that The plurality of second gap openings (302) of the second side (102) of the transparent substrate (10) are arranged adjacent to the plurality of end corners (103) of the second side (102) of the transparent substrate (10).

11. The focusing unit according to claim 2, characterized in that The first sub-copper-clad component (2011) comprises a plurality of copper-clad branches (203), and the plurality of copper-clad branches (203) are arranged in an interlaced manner.

12. The focusing unit according to claim 11, characterized in that The second sub-copper-clad component (2021) comprises a plurality of copper-clad branches (203), and the plurality of copper-clad branches (203) are arranged in an interlaced manner.

13. The focusing unit according to claim 12, characterized in that The first sub-copper-clad component (2011) and the second sub-copper-clad component (2021) both comprise a copper-clad frame (204). In each of the first sub-copper-clad components (2011) or each of the second sub-copper-clad components (2021), the copper-clad frame (204) is arranged around the outside of the edges of the plurality of copper-clad branches (203) and encloses the plurality of copper-clad branches (203).

14. The focusing unit according to claim 1, wherein The transparent substrate (10) comprises a transparent medium (104) and a transparent film (105), wherein the transparent film (105) is arranged on both sides of the transparent medium (104) in a first direction, and the first copper-clad component (201) and the second copper-clad component (202) are respectively arranged on the transparent film (105) on both sides of the transparent medium (104) in the first direction.

15. The focusing unit according to claim 14, characterized in that The transparent film (105) is bonded and fixed to the transparent medium (104).

16. A focusing device, characterized in that: The invention comprises a plurality of focusing units (100) according to any one of claims 1 to 15.

17. A communication device, characterized in that: Comprising the focusing device (200) described in claim 16.

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