Takahiro NAGAI


A Highly Efficient Switched-Capacitor Voltage Boost Converter with Nano-Watt MPPT Controller for Low-Voltage Energy Harvesting
Toshihiro OZAKI Tetsuya HIROSE Takahiro NAGAI Keishi TSUBAKI Nobutaka KUROKI Masahiro NUMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2491-2499
Type of Manuscript:  Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: 
Keyword: 
energy harvestingDC-DC convertercharge pumpMPPTlow-power
 Summary | Full Text:PDF

Phase Jitter of Carrier Recovery Using Fourth-Power Multiplier for QPSK and QAM Transmission
Kazuhiro MIYAUCHI Takahiro NAGAI Masataka KATO Shigeo OHUE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/05/25
Vol. E80-B  No. 5  pp. 755-762
Type of Manuscript:  PAPER
Category: Radio Communication
Keyword: 
carrier recovery circuitrms phase jitterfourth-power miltiplierQPSKQAM
 Summary | Full Text:PDF