Super compact UWB bandpass filter using unit-cell CRLH-TL based on via-pin capacitor

摘要

This paper presents a super compact ultra-wideband (UWB) bandpass filter using unit-cell composited right/left-handed transmission line (CRLH-TL) based on via-pin capacitor for size reduction. The proposed filter can extremely reduce size by adopting arch-shaped Teflon coated pin which is inserted into shorting via as vertical cylinder type capacitor. The proposed filter has a compact size of 7.2 × 3.315 mm