Inventor
NOJIMA TOSHIO
JP42 patents
⚠️ This page may combine multiple inventors who share the name “NOJIMA TOSHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
19 patentsUS6178158B1Jan 23, 2001
Method and apparatus for transmission and reception
NIPPON TELEGRAPH & TELEPHONE175 citations99
US5907585AMay 25, 1999
Digital signal detecting method and detector
NIPPON TELEGRAPH & TELEPHONE116 citations98
US5812296ASep 22, 1998
Fiber optics transmission system
NIPPON TELEGRAPH & TELEPHONE121 citations98
US5251330AOct 5, 1993
Linear transmitter
NIPPON TELEGRAPH & TELEPHONE121 citations97
US5146178ASep 8, 1992
Impedance-matched, class F high-frequency amplifier
NIPPON TELEGRAPH & TELEPHONE164 citations97
US6320464B1Nov 20, 2001
Feedforward amplifier
NIPPON TELEGRAPH & TELEPHONE76 citations96
US5715525AFeb 3, 1998
Radio frequency circuit for portable radion communication device
NIPPON TELEGRAPH & TELEPHONE68 citations96
US4980652ADec 25, 1990
Frequency synthesizer having compensation for nonlinearities
NIPPON TELEGRAPH & TELEPHONE117 citations96
US4943783AJul 24, 1990
Feed forward distortion correction circuit
NIPPON TELEGRAPH & TELEPHONE70 citations96
US4329655AMay 11, 1982
Adaptive equalization system for nonlinearities
NIPPON TELEGRAPH & TELEPHONE82 citations96
US5166634ANov 24, 1992
Feed-forward amplifier
NIPPON TELEGRAPH & TELEPHONE84 citations94
US4776032AOct 4, 1988
Repeater for a same frequency with spillover measurement
NIPPON TELEGRAPH & TELEPHONE123 citations94
US4772856ASep 20, 1988
Power amplifier
NIPPON TELEGRAPH & TELEPHONE84 citations94
US6208204B1Mar 27, 2001
Feedforward amplifier
NIPPON TELEGRAPH & TELEPHONE58 citations93
US6480706B1Nov 12, 2002
High sensitivity radio receiver
NIPPON TELEGRAPH & TELEPHONE30 citations92
US5796307AAug 18, 1998
Amplifying device having input and output nonlinear phase shifters of opposite phase-frequency characteristics
NIPPON TELEGRAPH & TELEPHONE40 citations92
US5790555AAug 4, 1998
Signal multiplexer and multiplexing method
NIPPON TELEGRAPH & TELEPHONE47 citations92
US5231632AJul 27, 1993
Radio communication equipment for a mobile station and traffic channel hand-off method using the same
NIPPON TELEGRAPH & TELEPHONE24 citations92
US5302908AApr 12, 1994
High precision phase comparator and phase locked loop
NIPPON TELEGRAPH & TELEPHONE11 citations72
NTT DOCOMO INC
13 patentsUS7013087B2Mar 14, 2006
Communication system using optical fibers
NTT DOCOMO INC141 citations98
US6392483B2May 21, 2002
Feed-forward amplifier
NTT DOCOMO INC97 citations98
US6907269B2Jun 14, 2005
Mobile communication base station equipment
NTT DOCOMO INC116 citations97
US7327996B2Feb 5, 2008
High sensitivity radio receiver
NTT DOCOMO INC20 citations92
US7227906B2Jun 5, 2007
Radio communication method and apparatus for multiplex transmission of plural signals in the same frequency band
NTT DOCOMO INC35 citations92
US6963758B2Nov 8, 2005
High-sensitivity wireless receiving device and high-frequency unit used therefor
NTT DOCOMO INC23 citations92
US6621367B2Sep 16, 2003
Signal power dynamic range compressing circuit and power amplifier using the same
NTT DOCOMO INC23 citations92
US6515544B1Feb 4, 2003
Multi-terminal power combining feed-forward amplifier
NTT DOCOMO INC30 citations92
US7186377B2Mar 6, 2007
Absorption power measuring device
NTT DOCOMO INC19 citations91
US7072409B2Jul 4, 2006
Space multiplex radio communication method and radio communication apparatus
NTT DOCOMO INC12 citations84
US6838934B2Jan 4, 2005
Feedforward amplifier with dual loop
NTT DOCOMO INC10 citations74
US7615188B2Nov 10, 2009
Apparatus for measuring absorbed power
NTT DOCOMO INC6 citations72
US7203469B2Apr 10, 2007
Supergain array antenna system and method for controlling supergain array antenna
NTT DOCOMO INC3 citations62
JAPAN RADIO CO LTD
5 patentsUS5327096AJul 5, 1994
Control circuit for automatically controlled feed forward nonlinear distortion compensation amplifier
JAPAN RADIO CO LTD27 citations92
US5412342AMay 2, 1995
Power amplifier device comprising a plurality of feedforward distortion compensating circuits in parallel
JAPAN RADIO CO LTD15 citations74
US5363072ANov 8, 1994
High-frequency power divider-combiner
JAPAN RADIO CO LTD14 citations74
US5313657AMay 17, 1994
Receiver capable of reliably detecting a failure
JAPAN RADIO CO LTD15 citations69
US5394120AFeb 28, 1995
Device for testing an amplifier
JAPAN RADIO CO LTD6 citations59
HITACHI INT ELECTRIC INC
4 patentsUS7626455B2Dec 1, 2009
Distortion compensation apparatus
HITACHI INT ELECTRIC INC13 citations83
US8035444B2Oct 11, 2011
Amplifier apparatus
HITACHI INT ELECTRIC INC17 citations82
US7714648B2May 11, 2010
Amplifying system
HITACHI INT ELECTRIC INC7 citations74
US7719364B2May 18, 2010
High frequency power amplifier
HITACHI INT ELECTRIC INC3 citations59