Inventor · disambiguated record
Hajime Hamada
Also filed as: HAMADA HAJIME
73 granted patents·3 pending applications·1,426 citations·filing 1979–2014
99Inventor score
Top patents by PatentIndex Score
76 records- 0194US6028894ASIR or SNR measurement apparatusFUJITSU LTD·Filed 1997·Granted Feb 22, 2000·175 cites·4 claims
- 0293US6552609B2Signal distortion compensating apparatus and methodFUJITSU LTD·Filed 2001·Granted Apr 22, 2003·64 cites·21 claims
- 0392US7551687B2Distortion compensating apparatusFUJITSU LTD·Filed 2005·Granted Jun 23, 2009·21 cites·9 claims
- 0492US6826169B1Code multiplexing transmitting apparatusFUJITSU LTD·Filed 2000·Granted Nov 30, 2004·51 cites·24 claims
- 0590US7106249B2Phase calibration method and apparatusFUJITSU LTD·Filed 2004·Granted Sep 12, 2006·42 cites·23 claims
- 0690US7012969B2Distortion compensating apparatusFUJITSU LTD·Filed 2000·Granted Mar 14, 2006·44 cites·21 claims
- 0789US6097714ACode multiplexing transmitting apparatusFUJITSU LTD·Filed 1997·Granted Aug 1, 2000·93 cites·14 claims
- 0888US6907085B2Activation method of communications apparatus with a non-linear distortion compensation deviceFUJITSU LTD·Filed 2001·Granted Jun 14, 2005·36 cites·15 claims
- 0987US7839949B2Peak suppression method, peak suppression apparatus and wireless transmission apparatusFUJITSU LTD·Filed 2006·Granted Nov 23, 2010·15 cites·16 claims
- 1087US6757525B1Distortion compensating apparatusFUJITSU LTD·Filed 2002·Granted Jun 29, 2004·44 cites·14 claims
- 1185US6980604B2Transmission device and transmission methodFUJITSU LTD·Filed 2001·Granted Dec 27, 2005·47 cites·26 claims
- 1285US6717464B2Distortion compensating apparatusFUJITSU LTD·Filed 2002·Granted Apr 6, 2004·33 cites·26 claims
- 1385US6041034ASpread spectrum communication systemFUJITSU LTD·Filed 1997·Granted Mar 21, 2000·69 cites·19 claims
- 1484US7804914B2Radio transmission apparatus having peak suppression functionFUJITSU LTD·Filed 2008·Granted Sep 28, 2010·11 cites·7 claims
- 1584US6577273B2Radio transceiver and method of controlling direction of radio-wave emissionFUJITSU LTD·Filed 2000·Granted Jun 10, 2003·18 cites·13 claims
- 1682US7447485B2Device and method for controlling a voltage control signalFUJITSU LTD·Filed 2006·Granted Nov 4, 2008·12 cites·11 claims
- 1782US6864745B2Distortion compensation deviceFUJITSU LTD·Filed 2003·Granted Mar 8, 2005·33 cites·17 claims
- 1880US8933752B2Power amplifier apparatus, distortion compensation coefficient updating method, and transmission apparatusNAGATANI KAZUO·Filed 2011·Granted Jan 13, 2015·7 cites·12 claims
- 1980US8009756B2Peak suppressing and restoring method, transmitter, receiver, and peak suppressing and restoring systemFUJITSU LTD·Filed 2009·Granted Aug 30, 2011·7 cites·10 claims
- 2080US6009090ACode multiplexing wireless apparatusFUJITSU LTD·Filed 1997·Granted Dec 28, 1999·67 cites·9 claims
- 2179US8154341B2Power amplifying apparatusISHIKAWA HIROYOSHI·Filed 2008·Granted Apr 10, 2012·10 cites·8 claims
- 2279US7106133B2Distortion compensatorFUJITSU LTD·Filed 2004·Granted Sep 12, 2006·23 cites·16 claims
- 2378US8451055B2Distortion compensating apparatus, transmitting apparatus, and distortion compensating methodFUDABA NOBUKAZU·Filed 2011·Granted May 28, 2013·7 cites·9 claims
- 2477US7860185B2Distortion compensating apparatus and power amplifier apparatusFUJITSU LTD·Filed 2008·Granted Dec 28, 2010·9 cites·12 claims
- 2577US6853631B1Code-division multiplex communication transmitting apparatus and receiving apparatus and method thereofFUJITSU LTD·Filed 1999·Granted Feb 8, 2005·53 cites·8 claims
- 2676US7551905B2Distortion compensation apparatusFUJITSU LTD·Filed 2004·Granted Jun 23, 2009·21 cites·10 claims
- 2776US6864839B2Radio transceiver and method of controlling direction of radio-wave emissionFUJITSU LTD·Filed 2003·Granted Mar 8, 2005·23 cites·4 claims
- 2876US6058138ARadio reception system providing improved transmission qualityFUJITSU LTD·Filed 1997·Granted May 2, 2000·53 cites·10 claims
- 2975US6496474B1Spread encoding device and methodFUJITSU LTD·Filed 1998·Granted Dec 17, 2002·41 cites·14 claims
- 3074US7969205B2Peak power reduction methodFUJITSU LTD·Filed 2009·Granted Jun 28, 2011·5 cites·19 claims
- 3174US7756216B2Signal peak voltage suppression apparatusFUJITSU LTD·Filed 2006·Granted Jul 13, 2010·5 cites·14 claims
- 3273US7026991B2Radio transceiver and method of controlling direction of radio-wave emissionFUJITSU LTD·Filed 2004·Granted Apr 11, 2006·8 cites·2 claims
- 3371US7991073B2Distortion compensation apparatus and methodFUJITSU LTD·Filed 2009·Granted Aug 2, 2011·4 cites·22 claims
- 3470US7388926B2Quadrature modulation systemFUJITSU LTD·Filed 2004·Granted Jun 17, 2008·14 cites·22 claims
- 3569US7224720B2Correlator and delay lock loop circuitFUJITSU LTD·Filed 2003·Granted May 29, 2007·9 cites·3 claims
- 3667US8452250B2DC offset compensation method and DC offset compensation deviceISHIKAWA HIROYOSHI·Filed 2007·Granted May 28, 2013·3 cites·25 claims
- 3767US7782153B2Timing adjusting method and timing adjusting apparatusFUJITSU LTD·Filed 2006·Granted Aug 24, 2010·3 cites·16 claims
- 3866US8442157B2Wireless apparatus and signal processing methodISHIKAWA HIROYOSHI·Filed 2010·Granted May 14, 2013·2 cites·11 claims
- 3966US8102941B2Peak suppression control apparatusHAMADA HAJIME·Filed 2007·Granted Jan 24, 2012·3 cites·29 claims
- 4066US6563859B1Receiver and receiving method in multi-carrier spread-spectrum communicationsFUJITSU LTD·Filed 1999·Granted May 13, 2003·55 cites·22 claims
- 4164US8571495B2Distortion compensation apparatus and methodNAGATANI KAZUO·Filed 2010·Granted Oct 29, 2013·3 cites·10 claims
- 4264US8130866B2Peak suppressing apparatus, peak suppressing method, and wireless communication deviceNAGATANI KAZUO·Filed 2009·Granted Mar 6, 2012·2 cites·5 claims
- 4362US8520770B2Amplitude suppressing apparatus and signal transmitting apparatusISHIKAWA HIROYOSHI·Filed 2009·Granted Aug 27, 2013·2 cites·1 claims
- 4462US7746957B2Distortion correction control apparatus and distortion correction control methodFUJITSU LTD·Filed 2009·Granted Jun 29, 2010·4 cites·10 claims
- 4561US7447484B2Timing controller and timing control methodFUJITSU LTD·Filed 2006·Granted Nov 4, 2008·4 cites·13 claims
- 4660US8489037B2Power amplifying apparatus with bandwidth limitation processing on variable power supplyFUDABA NOBUKAZU·Filed 2008·Granted Jul 16, 2013·4 cites·13 claims
- 4760US8270530B2Apparatus and method of compensating distortionHAMADA HAJIME·Filed 2009·Granted Sep 18, 2012·4 cites·20 claims
- 4860US7391371B2Radio transceiver and method of controlling direction of radio-wave emissionFUJITSU LTD·Filed 2004·Granted Jun 24, 2008·3 cites·11 claims
- 4960US6359875B1CDMA receiving apparatusFUJITSU LTD·Filed 1998·Granted Mar 19, 2002·27 cites·5 claims
- 5059US6650689B1Correlator and delay lock loop circuitFUJITSU LTD·Filed 1999·Granted Nov 18, 2003·22 cites·6 claims
Showing the top 50 of 76 patent records by PatentIndex Score.
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