Dual-Frequency Miniaturized Substrate Integrated Waveguide Quarter-Mode Cavity-Backed Antenna Based on Minkowski Fractal Gap with Orthogonal Polarization Radiation Characteristics

<table class="fixed-width table-group" id="tab1"><tr><td><table class="table"><colgroup><col style="width:11.50em"/><col style="width:5.18em"/><col style="width:10.91em"/><col style="width:4.50em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Substrate thickness (mm)</td><td class="align_center">Gain</td><td class="align_center">Radiation efficiency (%)</td><td class="align_center">BW (%)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">0.762</td><td class="align_center">3.77/4.48.</td><td class="align_center">64.7/75.2</td><td class="align_center">- -/1.7</td></tr><tr><td class="align_left">1</td><td class="align_center">3.87/3.32</td><td class="align_center">80.7/71.3</td><td class="align_center">2/2.3</td></tr><tr><td class="align_left">1.524</td><td class="align_center">4.67/3.6</td><td class="align_center">87.3/83.5</td><td class="align_center">2.7/2.6</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The effect of the substrate thickness on the antenna performance.</div>

International Journal of Antennas and Propagation

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Table 1

Table 1: Dual-Frequency Miniaturized Substrate Integrated Waveguide Quarter-Mode Cavity-Backed Antenna Based on Minkowski Fractal Gap with Orthogonal Polarization Radiation Characteristics 

Table 1 | Dual-Frequency Miniaturized Substrate Integrated Waveguide Quarter-Mode Cavity-Backed Antenna Based on Minkowski Fractal Gap with Orthogonal Polarization Radiation Characteristics 