Patch Antenna Inset Feed Calculator May 2026

--- Results --- Patch width (W) : 37.26 mm Patch length (L) : 28.96 mm Effective εr : 4.125 Edge input resistance : 215.8 Ω Inset distance (y0) : 9.32 mm from edge Impedance at inset : 49.98 Ω

# Step 5: Edge resistance approximation (cavity model) Rin0 = 90 * (er**2 / (er - 1)) * (L / W) patch antenna inset feed calculator

This feature is designed for educational tools, RF simulation prep, or as a module in a larger antenna design suite. 1. Overview This feature calculates the required inset feed point distance for a rectangular microstrip patch antenna to achieve a specific input impedance match (typically 50Ω). It also computes key antenna parameters: resonant frequency, patch dimensions, and effective dielectric constant. --- Results --- Patch width (W) : 37

# Step 1: Width W W = (c / (2 * f)) * math.sqrt(2 / (er + 1)) It also computes key antenna parameters: resonant frequency,

# Step 3: Delta L num = (ereff + 0.3) * (W / h + 0.264) den = (ereff - 0.258) * (W / h + 0.8) delta_L = h * 0.412 * (num / den)