Inventor
AKIYAMA CHIYOSHI
JP6 patents
⚠️ This page may combine multiple inventors who share the name “AKIYAMA CHIYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
5 patentsUS7340248B2Mar 4, 2008
Calibration apparatus
FUJITSU LTD23 citations91
US7248216B2Jul 24, 2007
Calibration apparatus and method for array antenna
FUJITSU LTD16 citations83
US6255858B1Jul 3, 2001
Phase-frequency detector and phase-locked loop circuit incorporating the same
FUJITSU LTD9 citations72
US8050718B2Nov 1, 2011
Wireless base station
FUJITSU LTD0 citations48
US7983633B2Jul 19, 2011
Radio base station having transmitters corresponding to a plurality of sectors, and signal transmission method for a plurality of sectors
FUJITSU LTD0 citations48