y sub 0 equals the fraction with numerator cap L and denominator pi end-fraction the inverse cosine of open paren the square root of the fraction with numerator 50 and denominator cap R sub i n end-sub open paren 0 close paren end-fraction end-root close paren Quick Example (2.4 GHz on FR4) Using a standard FR4 substrate ( Inset Depth ( of the patch length (approx. Design Tips Gap Width:
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