www.microwavejournal.com/articles/12213-composite-low-pass-filter-design-with-t-and-960-network-on-microstrip-line
Composite Low Pass Filter Design with T and π Network on Microstrip Line
Z.D. Tan, J.S. Mandeep, S.I.S. Hassan and M.F. Ain, Universiti Sains Malaysia
August 8, 2007