Highly selective left-handed transmission line loaded with split ring resonators and wires

Borja, A. L.; Carbonell, J.; Boria, V. E.; Lippens, D.
April 2009
Applied Physics Letters;4/6/2009, Vol. 94 Issue 14, p143503
Academic Journal
The frequency selectivity of coplanar transmission lines loaded with split ring resonators and shunt strips was dramatically improved owing to a blueshift of the electrical plasma frequency by oversizing the strip width. Beyond a higher rejection level, which was expected as a consequence of the deepening of the forbidden gap between the left- and right-handed dispersion branches, a huge enhancement in the loaded Q quality factors, while maintaining low insertion losses were also pointed out. This Q factor improvement was a consequence of a decrease in the coupling between the resonators and the transmission line.


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