B.-J. ChenT.-M. ShenRUEY-BEEI WU2018-09-102018-09-102009-07http://scholars.lib.ntu.edu.tw/handle/123456789/351843Design of tri-band filters with improved band allocationjournal article10.1109/TMTT.2009.20228882-s2.0-68349092781WOS:000268034500021