Mutual inductance in wave filters with an introduction on filter design

@article{JohnsonMutualII,
  title={Mutual inductance in wave filters with an introduction on filter design},
  author={K. S. Johnson and T. E. Jr. Shea},
  journal={Bell System Technical Journal},
  volume={4},
  pages={52-111}
}
Principles of Generalized Dissymmetrical Networks. We shall consider first the impedance and propagation characteristics of certain generalized networks, It can be shown that any passive network having one pair of input and one pair of output terminals may, at any frequency, be completely and adequately represented by an equivalent T or π network.1 The impedance and propagation characteristics of any such network may be expressed in terms of its equivalent T or π network. These characteristics… 
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