Exact Analysis of Shielded Microstrip Lines and Bilateral Fin Lines, Jul. 1981

An exact analysis is presented for shielded microstrip and bilateral fin lines. The method of analysis is based on function-theoretic approach to solve a set of functional equations in the Fourier transform domain, representing the independent excitation of LSE and LSM modes in the systems without strip or fin conductors. The solution is obtained in the form of highly convergent systems of algebraic equations, which allow the accurate calculation of fields and the electrical parameters of these fines at arbitrary frequencies.