1. and , Wideband bandpass filter design with three-line microstrip structures, IEEE MTT-S Int Microwave Symp Dig, Phoenix, AZ, (2001), 1593-1596.
2. , and , Aperture compensation technique for innovative design of ultra-broadband microstrip bandpass filter, IEEE MTT-S Int Microwave Symp Dig, Boston, MA, (2000), 315-318.
3. , and , Small-sized wideband CVT- and CCT-ring filters, IEEE MTT-S Int Microwave Symp Dig, Philadelphia, PA, (2003), 1607-1610.