The Design of a Multifunctional Coding Transmitarray with Independent Manipulation of the Polarization States
<p>The multifunctional schematic diagram of the suggested RPRCT working with orthogonally polarized waves from top to bottom.</p> "> Figure 2
<p>The geometry of the suggested transmission element. (<b>a</b>) The 3-D view perspective. (<b>b</b>) The top patch and its feed points. (<b>c</b>) The first ground layer. (<b>d</b>) The middle layer of the stripline. (<b>e</b>) The second ground layer. (<b>f</b>) The bottom patch and its feed points.</p> "> Figure 3
<p>Transmission characterization for the x-/y-polarization incidence. (<b>a</b>) Magnitudes. (<b>b</b>) PCRs.</p> "> Figure 4
<p>Transmission characteristics versus frequency for four kinds of coding particles. (<b>a</b>) Phases. (<b>b</b>) The transmission and reflection magnitudes.</p> "> Figure 5
<p>Transmission analysis diagram. (<b>a</b>) Middle layer structure, (<b>b</b>) reflection and transmission coefficients.</p> "> Figure 6
<p>The structure of the middle stripline: (<b>a</b>) side view and (<b>b</b>) interior structure.</p> "> Figure 7
<p>Transmission performance of the middle stripline: (<b>a</b>) transmission phases with different l and (<b>b</b>) magnitudes of S11 with l = 75 mm.</p> "> Figure 8
<p>The calculated desired phase profile of the metasurface for a vortex beam under the x incidence: (<b>a</b>)<math display="inline"><semantics> <mrow> <mtext> </mtext> <mi>l</mi> <msub> <mrow> <mi>φ</mi> </mrow> <mrow> <mi>m</mi> <mi>n</mi> </mrow> </msub> </mrow> </semantics></math>, and (<b>b</b>) <math display="inline"><semantics> <mrow> <mi>l</mi> <msub> <mrow> <mi>φ</mi> </mrow> <mrow> <mi>m</mi> <mi>n</mi> </mrow> </msub> <mo>−</mo> <msub> <mrow> <mi>k</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msub> <mfenced open="|" close="|" separators="|"> <mrow> <msub> <mrow> <mover accent="true"> <mrow> <mi mathvariant="bold-italic">r</mi> </mrow> <mo>→</mo> </mover> </mrow> <mrow> <mi mathvariant="bold-italic">m</mi> <mi mathvariant="bold-italic">n</mi> </mrow> </msub> <mo>−</mo> <msub> <mrow> <mover accent="true"> <mrow> <mi mathvariant="bold-italic">r</mi> </mrow> <mo>→</mo> </mover> </mrow> <mrow> <mi mathvariant="bold-italic">f</mi> </mrow> </msub> </mrow> </mfenced> </mrow> </semantics></math>.</p> "> Figure 9
<p>The calculated desired phase profile of the metasurface for bi-focal spots under the y incidence.</p> "> Figure 10
<p>Magnitudes and phases of simulated transmission near electric fields at <math display="inline"><semantics> <mrow> <mi>z</mi> <mo>=</mo> <mo>−</mo> <mn>40</mn> <mtext> </mtext> <mi>mm</mi> </mrow> </semantics></math> because of the x incoming waves at 4.75 GHz for mode <span class="html-italic">l</span> = 1 from top to bottom: (<b>a</b>) magnitudes and (<b>b</b>) phases.</p> "> Figure 11
<p>Simulated transmission near electric field: magnitude for bi-focal spots at z = −31.58 mm.</p> "> Figure 12
<p>Fabricated prototype. (<b>a</b>) The top, (<b>b</b>) the bottom.</p> "> Figure 13
<p>Experimental setup and schematic diagram.</p> "> Figure 14
<p>Experimental normalized E-field distributions for the x-polarized waves from top to bottom: (<b>a</b>) magnitudes and (<b>b</b>) phases.</p> "> Figure 15
<p>Experimental measurement of OAM E-field distributions for the y-polarized waves from bottom to top: (<b>a</b>) magnitudes and (<b>b</b>) phases.</p> ">
Abstract
:1. Introduction
2. The Working Principle of the RPRCT
3. RPRCT Element Design and Analysis
3.1. The Element Design of the RPRCT
3.2. The Simulation of the RPRCT Element
3.3. The Design Principle of the Phase-Regulation Layer
4. Multifunctional RPRCT Design
5. Experimental Analysis of the RPRCT
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Functionalities | Polarization State | Illuminating Space |
---|---|---|
Vortex beam with mode l = 1 | x-polarization | Upper space |
Bi-focal converging beams | x-polarization | Upper space |
Bi-focal converging beams | y-polarization | Lower space |
Vortex beam with mode l = 1 | y-polarization | Lower space |
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Zhang, S.; Cao, W.; Wu, T.; Wang, J.; Wei, Y. The Design of a Multifunctional Coding Transmitarray with Independent Manipulation of the Polarization States. Micromachines 2024, 15, 1014. https://doi.org/10.3390/mi15081014
Zhang S, Cao W, Wu T, Wang J, Wei Y. The Design of a Multifunctional Coding Transmitarray with Independent Manipulation of the Polarization States. Micromachines. 2024; 15(8):1014. https://doi.org/10.3390/mi15081014
Chicago/Turabian StyleZhang, Shunlan, Weiping Cao, Tiesheng Wu, Jiao Wang, and Ying Wei. 2024. "The Design of a Multifunctional Coding Transmitarray with Independent Manipulation of the Polarization States" Micromachines 15, no. 8: 1014. https://doi.org/10.3390/mi15081014