Flexible Phase Difference of 4 × 4 Butler Matrix without Phase-Shifters and Crossovers

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Parameters</td><td class="align_center">Values (<i>μ</i>m)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left"><i>L</i>0</td><td class="align_center">3636</td></tr><tr><td class="align_left"><i>L</i>1</td><td class="align_center">2000</td></tr><tr><td class="align_left"><i>L</i>2</td><td class="align_center">3704</td></tr><tr><td class="align_left"><i>L</i>3</td><td class="align_center">5800</td></tr><tr><td class="align_left"><i>L</i>4</td><td class="align_center">14357</td></tr><tr><td class="align_left"><i>L</i>5</td><td class="align_center">9800</td></tr><tr><td class="align_left"><i>W</i>0</td><td class="align_center">318</td></tr><tr><td class="align_left"><i>W</i>1</td><td class="align_center">714</td></tr><tr><td class="align_left"><i>W</i>2</td><td class="align_center">430</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Optimized parameters of the coupler.</div>

International Journal of Antennas and Propagation

tab4

Table 4

Table 4: Flexible Phase Difference of 4 × 4 Butler Matrix without Phase-Shifters and Crossovers 