K. Srisathit, P. Jadpum, S. Bunnjaweht, and W. Surakampontorn, “New dual-mode ring bandpass filter using symmetrical left-handed transmission line, ” in Asia-Pacific Microwave Conference 2007 (APMC2007), Bangkok, Thailand, Dec. 11-14, 2007, pp. 1015-1018.
K. Srisathit, P. Jadpum, and W. Surakampontorn, “Miniature wilkinson divider and hybrid coupler with harmonic suppression using T-shaped transmission line, ” in Asia-Pacific Microwave Conference 2007 (APMC2007), Bangkok, Thailand, Dec. 11-14, 2007, pp. 785-788.
K. Srisathit and W. Surakampontorn, “Novel transversal microstrip bandpass filter, ” in the 31st Electrical Engineering Conference (EECON-31), Nakornnayok, Thailand, Oct. 29-31, 2008, pp. 697-700.
K. Srisathit, “Simple technique to extend the bandwidth of parallel-coupled microstrip bandpass filter, ” in the 9th International Symposium on Communication and Information Technology 2009 (ISCIT2009), Songdo International City, Korea, Sep. 28-30, 2009, pp. 901-904.
K. Srisathit and W. Surakampontorn, “Wideband microstrip bandpass filter based on modified parallel-coupled line topology, ” in the 10th International Symposium on Communication and Information Technology 2010 (ISCIT2010), Meiji University, Tokyo, Japan, Oct. 26-29, 2010, pp. 45-48.
