Design of a small composite right/left-handed band-pass filter

Abstract

A new design approach to a small band-pass filter based on Composite Right/Left-Handed (CRLH-TL) transmission lines for the target Terrestrial-Digital Multimedia Broadcasting (T-DMB, 174-216 MHz) band-pass filtering, which is a digital radio transmission technology developed in South Korea. The overall size of the proposed filter is substantially diminished compared to similar filters reported recently, and unwanted passbands are effectively suppressed. For the verification of this approach, the experimental results are demonstrated along with full-wave simulation and equivalent circuit simulation results.