Analysis of unsymmetrical broadside-coupled coplanar waveguides for microwave integrated circuits

An analysis of new broadside-coupled coplanar waveguides (CPW) having a completely asymmetrical structure, suitable for hybrid and monolithic microwave and millimeter-wave integrated circuits requiring broad bandwidths as well as loose and tight couplings, is presented. The results of the investigation, performed based on the spectral-domain analysis, demonstrate the versatility of the asymmetrical broadside-coupled CPW as compared to its symmetrical counterpart.