Empirical Analytical Expressions for Fin Line Design

Abstract

This paper presents empirical expressions in closed form for the design of unilateral and bilateral fin lines. The guided wavelength and the characteristic impedance calculated with these expressions are accurate within typically /spl plusmn/ 2 percent of the values obtained using the spectral domain technique in the normalized frequency range: 0.35 /spl les/ b/lambda /spl les/ 0.70.