Tadashi Suetsugu Marian K. Kazimierczuk Voltage-clamped class E amplifier with transmission-line transformer. 712-715 2005 conf/iscas/2005 ISCAS (1) http://dx.doi.org/10.1109/ISCAS.2005.1464687 db/conf/iscas/iscas2005-1.html#SuetsuguK05a