"Hiroki Sato,Shigetaka Takagi","Low-voltae, Linear Amplifier Using Triode Region MOSFETs","電子回路研究会","電気学会研究会資料","電気学会","Vol. ECT-14","No. 98","pp. 45-51",2014,Dec.
"Hiroki Sato,Takahide Sato,Shigetaka Takagi","Reduction in Active Elements for Leapfrog Low-pass and Band-pass Filter with Transmission Zeros",,"電気学会論文誌C","電気学会","Vol. 134","No. 1","pp. 8-14",2014,Jan.
"Paul Nogas,Shigetaka Takagi,Hiroki Sato,Nicodimus Retdian","Performance Comparison of Three Asynchronous Level-Crossing ADC Designs","電子回路研究会","電気学会研究会資料","電気学会","Vol. ECT-14","No. 30","pp. 161-166",2014,Jan.