Pseudo-highpass filters based on semi-distributed balanced composite right/left-handed unit cells

Abstract

In this study, the design of high selectivity, pseudo-highpass filters is presented. The proposed circuits utilize a novel semi-distributed-element composite right/left-handed unit cell (UC) composed of sections of transmission lines and a lumped capacitor. By proper balancing the structure, a very broad operation band can be obtained. Moreover, a single-layer microstrip realization is possible making the UC well suitable for low-cost filter realization. The proposed concept has been experimentally verified by the design and measurements of an exemplary pseudo-highpass filter.

Keywords:

• composite right/left-handed metamaterials
• unit cell
• filters

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by National Science Centre, Poland [grant number DEC-2011/01/D/ST7/00789].