Decoupling and Cloaking of Rectangular and Circular Patch Antennas and Interleaved Antenna Arrays with Planar Coated Metasurfaces at C-Band Frequencies—Design and Simulation Study
<p>Schematic design configurations: (<b>a</b>) Isolated Patch I and (<b>b</b>) Isolated Patch II.</p> "> Figure 2
<p>Schematics for (<b>a</b>) Uncloaked Patch I and II, (<b>b</b>) unfolded view of the cloak design for the patches, (<b>c</b>) Cloaked Patch I and II, and (<b>d</b>) side view of the cloaked rectangular patches, detailing the structural parameters of the coated metasurfaces.</p> "> Figure 3
<p>Parametric analysis using the reflection coefficients (<math display="inline"><semantics> <mrow> <mfenced open="|" close="|" separators="|"> <mrow> <msub> <mrow> <mi>S</mi> </mrow> <mrow> <mn>11</mn> </mrow> </msub> </mrow> </mfenced> </mrow> </semantics></math>) for (<b>a</b>) relative permittivity <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>ε</mi> </mrow> <mrow> <mi>c</mi> <mn>1</mn> </mrow> </msub> </mrow> </semantics></math> of the supporting dielectric material, (<b>b</b>) thickness of the dielectric <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>h</mi> </mrow> <mrow> <mi>c</mi> <mn>1</mn> </mrow> </msub> </mrow> </semantics></math>, (<b>c</b>) vertical slot placement <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>D</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> </mrow> </semantics></math>, and (<b>d</b>) horizontal slot placement <math display="inline"><semantics> <mrow> <msub> <mrow> <mn>2</mn> <mi>D</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> </mrow> </semantics></math> for the cloak design of Patch I.</p> "> Figure 4
<p>Cross-sectional view of the surface currents: (<b>a</b>) uncloaked and (<b>b</b>) cloaked Patch I at the cloaking frequency.</p> "> Figure 5
<p>Plots for (<b>a</b>) total efficiencies, (<b>b</b>) radiation efficiencies, and electric field contours at <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz for (<b>c</b>) uncloaked and (<b>d</b>) cloaked Patch I.</p> "> Figure 6
<p>S-parameter plots for (<b>a</b>) coupled uncloaked and (<b>b</b>) decoupled cloaked rectangular patch antennas.</p> "> Figure 7
<p>Total efficiencies when (<b>a</b>) Patch I is active and (<b>b</b>) Patch II is active.</p> "> Figure 8
<p>Electric field contours for the two rectangular patches placed close together: (<b>a</b>) coupled uncloaked (without cloaks) and (<b>b</b>) decoupled cloaked (with cloaks) cases, when Patch I (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz) is active, and similarly for (<b>c</b>) uncloaked and (<b>d</b>) cloaked cases, when Patch II (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>5.2</mn> </mrow> </semantics></math> GHz) is active.</p> "> Figure 9
<p>Realized gain patterns at (<b>a</b>)<math display="inline"><semantics> <mrow> <mo> </mo> <mi>φ</mi> <mo>=</mo> <msup> <mrow> <mn>0</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>b</b>) <math display="inline"><semantics> <mrow> <mi>θ</mi> <mo>=</mo> <msup> <mrow> <mn>90</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math> for Patch I (at frequency <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz), and at (<b>c</b>)<math display="inline"><semantics> <mrow> <mo> </mo> <mi>φ</mi> <mo>=</mo> <msup> <mrow> <mn>0</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>d</b>) <math display="inline"><semantics> <mrow> <mi>θ</mi> <mo>=</mo> <msup> <mrow> <mn>90</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math> for Patch II (at frequency <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>5.2</mn> </mrow> </semantics></math> GHz).</p> "> Figure 10
<p>E-field plots showing co-polar and cross-polar radiations for the cloaked configurations of (<b>a</b>) Patch I at <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz and (<b>b</b>) Patch II at <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>5.2</mn> </mrow> </semantics></math> GHz.</p> "> Figure 11
<p>(<b>a</b>) Cross-sectional view of Patch I coated with the metasurface cloak, (<b>b</b>) total RCS plot for Patch I and E-field plots for (<b>c</b>) uncloaked Patch I at <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz, (<b>d</b>) cloaked Patch I at <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz, and (<b>e</b>) cloaked Patch I at <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>5.2</mn> </mrow> </semantics></math> GHz in presence of a normally incident TM polarized plane wave.</p> "> Figure 12
<p>Schematic configurations of (<b>a</b>) uncloaked and (<b>b</b>) cloaked rectangular patch antenna arrays.</p> "> Figure 13
<p>(<b>a</b>) Active reflection coefficients, (<b>b</b>) active coupling coefficients for uncloaked (coupled) Array I, (<b>c</b>) active reflection coefficients, and (<b>d</b>) active coupling coefficients for cloaked (decoupled) Array I (resonance frequency <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz).</p> "> Figure 14
<p>(<b>a</b>) Active reflection coefficients, (<b>b</b>) active coupling coefficients for uncloaked (coupled) Array II, (<b>c</b>) active reflection coefficients, and (<b>d</b>) active coupling coefficients for cloaked (decoupled) Array II (resonance frequency <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>5.2</mn> </mrow> </semantics></math> GHz).</p> "> Figure 15
<p>Plots for total efficiencies: (<b>a</b>) Array I (resonance frequency <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz) active and (<b>b</b>) Array II (resonance frequency <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>5.2</mn> </mrow> </semantics></math> GHz) active.</p> "> Figure 16
<p>Electric field contours for (<b>a</b>) uncloaked and (<b>b</b>) cloaked patch antenna arrays when Array I (operating frequency, <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz) is active; (<b>c</b>) uncloaked and (<b>d</b>) cloaked patch antenna arrays when Array II (operating frequency, <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>5.2</mn> </mrow> </semantics></math> GHz) is active.</p> "> Figure 17
<p>Active VSWR plots for (<b>a</b>) uncloaked coupled and (<b>b</b>) cloaked decoupled Array I (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz), and isolation parameter plots for (<b>c</b>) uncloaked coupled and (<b>d</b>) cloaked decoupled Array I, at scan angle = <math display="inline"><semantics> <mrow> <msup> <mrow> <mn>20</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>.</p> "> Figure 18
<p>Active VSWR plots for (<b>a</b>) uncloaked coupled and (<b>b</b>) cloaked decoupled Array I (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz), and isolation parameter plots for (<b>c</b>) uncloaked coupled and (<b>d</b>) cloaked decoupled Array I, at scan angle = <math display="inline"><semantics> <mrow> <msup> <mrow> <mn>30</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>.</p> "> Figure 19
<p>Realized gain plots for Array I (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.9</mn> </mrow> </semantics></math> GHz) showing beam scanning at scan angles (<b>a</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mn>0</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>b</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mo>−</mo> <mn>10</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>c</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mo>−</mo> <mn>45</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, and (<b>d</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mn>20</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>.</p> "> Figure 20
<p>Realized gain plots for Array II (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>5.2</mn> </mrow> </semantics></math> GHz) showing beam scanning at angles (<b>a</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mn>0</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>b</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mo>−</mo> <mn>10</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>c</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mo>−</mo> <mn>45</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, and (<b>d</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mn>30</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>.</p> "> Figure 21
<p>Schematics for (<b>a</b>) uncloaked circular Patch I and II, (<b>b</b>) cross-sectional side view of the uncloaked coupled patches, (<b>c</b>) cloaked Patch I and II, (<b>d</b>) side view of the cloaked circular patches, detailing the structural parameters of the coated metasurfaces, and (<b>e</b>) unfolded view of the cloak design.</p> "> Figure 22
<p>Plots for S-parameters: (<b>a</b>) uncloaked coupled and (<b>b</b>) cloaked decoupled patch antennas and plots for total efficiencies: (<b>c</b>) Patch I is active and (<b>d</b>) Patch II is active.</p> "> Figure 23
<p>Electric field contours for (<b>a</b>) uncloaked coupled and (<b>b</b>) cloaked decoupled cases when Patch I is active (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.5</mn> </mrow> </semantics></math> GHz), and (<b>c</b>) uncloaked coupled and (<b>d</b>) cloaked decoupled cases when Patch II is active (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>4.7</mn> </mrow> </semantics></math> GHz).</p> "> Figure 24
<p>Realized gain patterns at (<b>a</b>)<math display="inline"><semantics> <mrow> <mo> </mo> <mi>φ</mi> <mo>=</mo> <msup> <mrow> <mn>0</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>b</b>) <math display="inline"><semantics> <mrow> <mi>θ</mi> <mo>=</mo> <msup> <mrow> <mn>90</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math> for Patch I (at <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.5</mn> </mrow> </semantics></math> GHz), and at (<b>c</b>)<math display="inline"><semantics> <mrow> <mo> </mo> <mi>φ</mi> <mo>=</mo> <msup> <mrow> <mn>0</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>d</b>) <math display="inline"><semantics> <mrow> <mi>θ</mi> <mo>=</mo> <msup> <mrow> <mn>90</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math> for Patch II (at <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>4.7</mn> </mrow> </semantics></math> GHz).</p> "> Figure 25
<p>(<b>a</b>) Cross-sectional side view, (<b>b</b>) total RCS plot for cloaked Patch I, and E-field distributions for cloaked Patch I at (<b>c</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.5</mn> </mrow> </semantics></math> GHz, (<b>d</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>4.7</mn> </mrow> </semantics></math> GHz in presence of a normally incident TM polarized plane wave.</p> "> Figure 26
<p>Schematic configurations of (<b>a</b>) uncloaked and (<b>b</b>) cloaked interleaved circular patch antenna arrays.</p> "> Figure 27
<p>Plots for total efficiencies: (<b>a</b>) Array I (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.5</mn> </mrow> </semantics></math> GHz) active and (<b>b</b>) Array II (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>4.7</mn> </mrow> </semantics></math> GHz) active.</p> "> Figure 28
<p>(<b>a</b>) Active reflection coefficients, (<b>b</b>) active coupling coefficients for uncloaked (coupled) Array I, (<b>c</b>) active reflection coefficients, and (<b>d</b>) active coupling coefficients for cloaked (decoupled) Array I (resonance frequency–<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.5</mn> </mrow> </semantics></math> GHz).</p> "> Figure 29
<p>(<b>a</b>) Active reflection coefficients, (<b>b</b>) active coupling coefficients for uncloaked (coupled) Array II, (<b>c</b>) active reflection coefficients, and (<b>d</b>) active coupling coefficients for cloaked (decoupled) Array II (resonance frequency–<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>4.7</mn> </mrow> </semantics></math> GHz).</p> "> Figure 30
<p>E-field contours: (<b>a</b>) uncloaked and (<b>b</b>) cloaked patch antenna arrays when Array I is active and (<b>c</b>) uncloaked and (<b>d</b>) cloaked patch antenna arrays when Array II is active.</p> "> Figure 31
<p>Realized gain polar plots for Array I (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mn>4.5</mn> </mrow> </semantics></math> GHz) at scan angles (<b>a</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>b</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mo>−</mo> <mn>10</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, (<b>c</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mn>20</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>, and (<b>d</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mo>−</mo> <mn>30</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>.</p> "> Figure 32
<p>Realized gain polar plots for Array II (<math display="inline"><semantics> <mrow> <msub> <mrow> <mi>f</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> <mo>=</mo> <mn>4.7</mn> </mrow> </semantics></math> GHz) at scan angles (<b>a</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mn>10</mn> <mo>°</mo> </msup> </mrow> </semantics></math> and (<b>b</b>) <math display="inline"><semantics> <mrow> <msub> <mrow> <mi>θ</mi> </mrow> <mrow> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msup> <mrow> <mo>−</mo> <mn>20</mn> </mrow> <mrow> <mo>°</mo> </mrow> </msup> </mrow> </semantics></math>.</p> ">
Abstract
:1. Introduction
2. Design of Planar Coated Metasurfaces for Rectangular Patch Antennas
3. Simulation Results Showcasing Decoupling and Cloaking of Two Rectangular Patch Antennas
4. Cloaking of the Interleaved Rectangular Patch Arrays
Beam Scanning
5. Circular Patch Antennas
5.1. Decoupling and Cloaking of Two Circularly Shaped Patch Antennas
5.2. Cloaking of the Interleaved Circular Patch Antenna Arrays
5.3. Beam Scanning
6. Conclusions and Future Directions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Ref. | Decoupling Approach | Frequency Bands (GHz) | Array Application | Antenna Element Separation (mm) | Reflection Coefficient (dB) | Coupling Reduction (dB) | Main Lobe Gain Enhancement (dB) |
---|---|---|---|---|---|---|---|
[22] | Cloaking (Circular Cloaks) | LF 1: 3.07 HF 2: 3.33 | Not addressed | 10 | LF 1: −12 (C 3) −17 (Dc 4) HF 2: −11.5 (C 3) −16 (Dc 4) | Not addressed | LF 1: ~2 HF 2: ~1.5 (Gain pattern restored) |
[25] | Cloaking (Elliptical Cloaks) | LF 1: 3 HF 2: 3.33 | Not addressed | 16 | LF 1: −19 (C 3) −20 (Dc 4) HF 2: −12 (C 3) −21 (Dc 4) | LF 1: ~25.5 HF 2: ~29.5 | LF 1: ~1 HF 2: ~1 (Gain pattern restored) |
[26] | Cloaking (Circular Cloaks) | LF 1: 0.92 HF 2: 3.2 | Not addressed | 36 | At LF 1: −14 At HF 2: −20 | Not addressed | At HF 2: ~5 (Gain pattern restored) |
[27] | Cloaking (Elliptical Cloaks) | LF 1: 4.5 HF 2: 5.5 | Possible but not addressed | 3 | LF 1: −18 (C 3) −30 (Dc 4) HF 2: −12 (C 3) −30 (Dc 4) | LF 1: ~20 HF 2: ~20 | LF 1: ~1.32 HF 2: ~3 (Gain pattern restored) |
[29] | Cloaking (Circular Cloaks) | LF 1: 0.79–0.86 HF 2: 1.9–2.2 | Not addressed | ~36.3 | LF 1: −25 (C 3) −18 (Dc 4) HF 2: −8 (C 3) −17.5 (Dc 4) | At HF 2: ~10 | At HF 2: ~2–3 (Gain pattern restored) |
[30] | Cloaking (Circular Cloaks) | LF 1: 0.69–0.96 HF 2: 1.71–2.71 | LF 1 antenna placed over 2 × 3 HF 2 array | ~20 | Not addressed | Not addressed | For HF 2 array: ~4 |
[37] | C-PDDN 5 | LF 1: 2.3–2.4 HF 2: 2.4–2.48 | Possible but not addressed | 96.5 | LF 1: −20 (C 3) −40 (Dc 4) HF 2: −15 (C 3) −20 (Dc 4) | LF 1: ~21 HF 2: ~21 | Not addressed |
[38] | FSS 6 Radiator | LF 1: 1.8–2.7 HF 2: 3.3–3.8 | LF 1 antenna placed over 2 × 2 HF 2 array | ~25 | At LF 1: −22.5 (Dc 4) For HF 2 array: −27.5 (Dc 4) | At LF 1: ~25 At HF 2: ~21 | Gain enhancement not addressed. Peak gain: At LF 1: ~7 For HF 2 array: ~9 |
[40] | Slot Loading | LF 1: 0.69–0.96 HF 2: 1.7–2.4 | LF 1 antenna placed over 2 × 2 HF 2 array | ~33 | At LF 1: −25 (Dc 4) For HF 2 array: −30 (Dc 4) | At LF 1: ~30 At HF 2: ~30 | Gain enhancement not addressed. Peak gain: At LF 1: ~8 For HF 2 array: ~12 |
[41] | 2.5 D Cloak Loading | LF 1: 1.64–2.56 HF 2: 4.4–5.0 | LF 1 antenna placed over HF 2 array | 40 | At LF 1: −25 (Dc 4) For HF 2 array: −20 (Dc 4) | At LF 1: ~25 At HF 2: ~25 | Peak gain: At LF 1: ~7 At HF 2: ~7.2 |
PW 7 | Cloaking (Planar Cloaks) | LF 1: 4.9 HF 2: 5.2 | Interleaved array (side-by-side antenna placement) | 2 | LF 1 array:>−10 (C 3) ~−15 (Dc 4) HF 2 array:>−10 (C 3) ~−12 (Dc 4) | At LF 1 array:~12.5 At HF 2 array:~12.5 | At LF 1 array: ~3.2 At HF 2 array: ~8.3 (gain pattern for each array is restored) |
PW 7 | Cloaking (Planar Cloaks) | LF 1: 4.5 HF 2: 4.7 | Interleaved array (side-by-side antenna placement) | 1.5 | LF 1 array:−12 (C 3) −20 (Dc 4) HF 2 array:−11 (C 3) −18 (Dc 4) | At LF 1 array: ~8 At HF 2 array: ~12 | At LF 1 array: ~3.7 At HF 2 array: ~6.8 (gain pattern for each array is restored) |
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Pawar, S.; Lee, D.; Skinner, H.; Suh, S.-Y.; Yakovlev, A. Decoupling and Cloaking of Rectangular and Circular Patch Antennas and Interleaved Antenna Arrays with Planar Coated Metasurfaces at C-Band Frequencies—Design and Simulation Study. Sensors 2024, 24, 291. https://doi.org/10.3390/s24010291
Pawar S, Lee D, Skinner H, Suh S-Y, Yakovlev A. Decoupling and Cloaking of Rectangular and Circular Patch Antennas and Interleaved Antenna Arrays with Planar Coated Metasurfaces at C-Band Frequencies—Design and Simulation Study. Sensors. 2024; 24(1):291. https://doi.org/10.3390/s24010291
Chicago/Turabian StylePawar, Shefali, Doojin Lee, Harry Skinner, Seong-Youp Suh, and Alexander Yakovlev. 2024. "Decoupling and Cloaking of Rectangular and Circular Patch Antennas and Interleaved Antenna Arrays with Planar Coated Metasurfaces at C-Band Frequencies—Design and Simulation Study" Sensors 24, no. 1: 291. https://doi.org/10.3390/s24010291
APA StylePawar, S., Lee, D., Skinner, H., Suh, S. -Y., & Yakovlev, A. (2024). Decoupling and Cloaking of Rectangular and Circular Patch Antennas and Interleaved Antenna Arrays with Planar Coated Metasurfaces at C-Band Frequencies—Design and Simulation Study. Sensors, 24(1), 291. https://doi.org/10.3390/s24010291