Empirical 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 agree, typically, within +- 2 percent with values obtained using numerical techniques in the normalized frequency range 0.35/spl les/= b/ lambda /spl les/= 0.7, which is suitable for most practical applications.

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