Synthesis of optimum smooth transition in microstrip through line on microwave integrated circuit
Abstract
A problem in designing microstrip trough lines as transmission lines for microwave hybridfilm integrated circuits is the synthesis of the optimum smooth widening of the center conductor on the dielectric substrate. Such a transition is described by the relation c(z)= Phi b(z) sub Z (sub0)(z) = const or , more explicitly c(z)= Phi b(z) sub C (sub1)(z) = const (z longitudinal coordinate, 1 length, 2b width of center conductor, 2c clearance between outer conductors, Z sub O wave impedance, C sub 1  capacitance per unit length). It can be accurately synthesized according to the singlemodel Tapproximation of the electrodynamic process, on the basis of quasisteady solutions to the corresponding singular integral equations and with conformal mapping. This is demonstrated by calculations made for a typical trough line as well as for a coplanar one.
 Publication:

USSR Rept Electron Elec Eng JPRS UEE
 Pub Date:
 January 1985
 Bibcode:
 1985RpEEE.......65Y
 Keywords:

 Electrodynamics;
 Integrated Circuits;
 Microstrip Transmission Lines;
 Conductors;
 Conformal Mapping;
 Dielectrics;
 Impedance;
 Microwave Transmission;
 Electronics and Electrical Engineering