%0 Journal Article
%T RF engineering basic concepts: S-parameters
%A F. Caspers
%J Physics
%D 2012
%I arXiv
%X The concept of describing RF circuits in terms of waves is discussed and the S-matrix and related matrices are defined. The signal flow graph (SFG) is introduced as a graphical means to visualize how waves propagate in an RF network. The properties of the most relevant passive RF devices (hybrids, couplers, non-reciprocal elements, etc.) are delineated and the corresponding S-parameters are given. For microwave integrated circuits (MICs) planar transmission lines such as the microstrip line have become very important.
%U http://arxiv.org/abs/1201.2346v1