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Realization of Multi-Port Networks Using Operational Amplifiers and Its Applications
Akinori NISHIHARA Takeshi YANAGISAWA
IEICE TRANSACTIONS (1976-1990)
Publication Date: 1982/06/25
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Circuit Theory
Full Text: PDF(349.3KB)>>
A systematic method for synthesizing multi-port networks specified by scattering matrices is proposed. First, a basic circuit for converting the port parameters is introduced. At each port the basic circuit converts the voltage and the current into the incident and the reflected wave quantities. Then each element of the scattering matrix is realized using the conventional techniques for the realization of one-input one-output transfer functions. When all the elements of the scattering matrix are either positive constant or zero, the resultant network can be simplified. With the proposed method, some known structures can be obtained very easily and two new structures for hybrid networks are derived. One of the salient feature of the proposed method is that it also provides the physical interpretation of structures derived. Experimental results are also given.