Synthesizing Microstrip Dual-Band Bandpass Filters Using Frequency Transformation and Circuit Conversion Technique. - Xuehui Guan; Zhewang Ma; Peng Cai; Yoshio Kobayashi; Tetsuo Anada; Gen Hagiwara (IEICE Trans. Electron., 2006)

Dual-Mode Bandpass Filters Using Microstrip Slotted Equilateral Triangular Patch Resonators. - Weiliang Hu; Zhewang Ma; Yoshio Kobayashi; Tetsuo Anada; Gen Hagiwara (IEICE Trans. Electron., 2006)