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Study of equivalent circuits for open-ring resonators in coplanar waveguide technology

Publicat a:Circuits And Systems For Signal Processing , Information And Communication Technologies, And Power Sources And Systems, Vol 1 And 2, Proceedings. 233-236 - 2006-01-01 (), DOI: 10.1109/MELCON.2006.1653080

Autors: Rogla, Luis J; Carbonell, Jorge; Boria, Vicente T

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Resum

A study of Open-Ring Resonators (ORRs) is performed in terms of equivalent circuits. This resonant particle can be intrinsically described by a simple LC equivalent circuit. The resonance is due to the behaviour of the ORR as a microstrip lambda(g)/2 open end stub, so it has a distributed nature. When this particle is inserted on the back-plane of a coplanar waveguide (CPW), and combined with short-circuiting wires on the top-plane, the overall structure exhibits a pass-band where backward waves are generated. The left-handed behaviour is proved through the analysis of the phase of different length transmission lines. Full-wave simulations and experimental results performed on manufactured prototypes validate the overall good performance of the proposed equivalent circuits. Detailed models for the different elements of the unit-cells are provided based on different analytical approaches.

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