Inset Feed Calculator -

<hr> <div class="note"> <strong>Formula:</strong> y₀ = (L/π) · arccos(√(Z_feed / R_edge))<br> Valid when Z_feed ≤ R_edge. Typical matching range: 50Ω feed to 150–250Ω edge. </div> </div>

<script> function calculateInset() isNaN(Zfeed)) showError("Please enter valid numbers."); return; if (L <= 0) showError("Patch length must be > 0."); return; if (Redge <= 0 inset feed calculator

<div id="errorMsg" class="error" style="display: none;"></div> if (L &lt

<div class="input-group"> <label>⚡ Edge resistance, R_edge (Ω)</label> <input type="number" id="redge" placeholder="e.g., 200" value="200"> <div class="hint">Typical range: 150–250 Ω (depends on width & substrate)</div> </div> if (Redge &lt