Inset Feed Calculator May 2026

For a rectangular patch antenna with an inset feed:

[ y_0 = \fracL\pi \cdot \cos^-1\left( \sqrt \fracZ_feedR_edge \right) ] inset feed calculator

<div class="input-group"> <label>🔌 Feed line impedance, Z_feed (Ω)</label> <input type="number" id="zfeed" placeholder="e.g., 50" value="50"> <div class="hint">Usually 50 Ω for standard systems</div> </div> For a rectangular patch antenna with an inset

<div id="resultArea" class="result" style="display: none;"> <div style="font-weight: 600;">📌 Inset from edge</div> <div class="result-value" id="insetValue">—</div> <div id="insetUnit"></div> </div> 🔌 Feed line impedance

<div id="errorMsg" class="error" style="display: none;"></div>

<button onclick="calculateInset()">Calculate Inset Depth (y₀)</button>