Microstrip Bandpass Filters with Reduced Size and Improved Stopband Characteristics Using New Stepped-Impedance Resonators. - Prayoot Akkaraekthalin; Jaruek Jantree (IEICE Trans. Electron., 2006)

Stepped-Impedance Hairpin Resonators with Asymmetric Capacitively Loaded Coupled Lines for Improved Stopband Characteristics. - Apirada Namsang; Thammarat Majaeng; Jaruek Jantree; Sarawuth Chaimool; Prayoot Akkaraekthalin (IEICE Trans. Electron., 2007)