Effective negative-/spl epsiv/ stopband microstrip lines based on complementary split ring resonators |
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Authors: | Falcone F. Lopetegi T. Baena J.D. Marques R. Martin F. Sorolla M. |
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Affiliation: | Electr. Eng. Dept., Public Univ. of Navarre, Pamplona, Spain; |
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Abstract: | In this letter a super-compact stopband microstrip structure is proposed. The frequency gap is produced by an array of complementary split ring resonators (CSRRs)-a concept proposed here for the first time-etched on the ground plane. This behavior is interpreted as due to the presence of a negative effective dielectric permittivity in the vicinity of resonance. The resulting device produces a deep rejection frequency band with sharp cutoff, and a pass band that exhibits very low losses and good matching. Due to the sub-lambda operation of CSRRs, the electrical size of the device is very small. |
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