De Dominicis, M. ; Giannini, F. ; Scucchia, L.
(2003)
A Dual-Band MMIC Low frequency 180 ° Hybrid.
In: Gallium Arsenide applications symposium. GAAS 2003, 6-10 October 2003, Munich.
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Abstract
In this paper design formulas,for the development of an unusual 180 ° hybrid working in two distinct frequency bands,are provided.In particular the design formulas of a lumped-element rat race,starting from a conventional transmission-line rat-race,are found out.In order to generalize the matching problem the input and output port impedances are considered to be different.
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