Shoichi Narahashi

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Wireless circuit and frequency pair determination method
- Patent number 9,356,644
- Issue date May 31, 2016
- NTT DoCoMo, Inc.
- Hiroshi Okazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Front-end circuit and impedance adjustment method
- Patent number 9,337,990
- Issue date May 10, 2016
- NTT DoCoMo, Inc.
- Shoichi Narahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Variable matching circuit
- Patent number 8,970,319
- Issue date Mar 3, 2015
- NTT DoCoMo, Inc.
- Takayuki Furuta
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multiband resonator and multiband-pass filter
- Patent number 8,847,706
- Issue date Sep 30, 2014
- NTT DoCoMo, Inc.
- Kei Satoh
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable resonator and variable filter
- Patent number 8,773,223
- Issue date Jul 8, 2014
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multirole circuit element capable of operating as variable resonato...
- Patent number 8,760,244
- Issue date Jun 24, 2014
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multimode frontend circuit
- Patent number 8,648,666
- Issue date Feb 11, 2014
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power series digital predistorter and distortion compensation contr...
- Patent number 8,594,231
- Issue date Nov 26, 2013
- NTT DoCoMo, Inc.
- Junya Ohkawara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable resonator, variable bandwidth filter, and electric circuit...
- Patent number 8,581,677
- Issue date Nov 12, 2013
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Bias circuit
- Patent number 8,570,117
- Issue date Oct 29, 2013
- NTT DoCoMo, Inc.
- Atsushi Fukuda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable resonator, tunable bandwidth filter, and electric circuit...
- Patent number 8,564,384
- Issue date Oct 22, 2013
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multiband matching circuit and multiband power amplifier
- Patent number 8,487,713
- Issue date Jul 16, 2013
- NTT DoCoMo, Inc.
- Atsushi Fukuda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Dual-band bandpass resonator and dual-band bandpass filter
- Patent number 8,427,260
- Issue date Apr 23, 2013
- NTT DoCoMo, Inc.
- Kei Satoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multiband matching circuit
- Patent number 8,416,035
- Issue date Apr 9, 2013
- NTT DoCoMo, Inc.
- Atsushi Fukuda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multiband matching circuit and multiband power amplifier
- Patent number 8,368,483
- Issue date Feb 5, 2013
- NTT DoCoMo, Inc.
- Atsushi Fukuda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable resonator, tunable filter, and electric circuit device
- Patent number 8,330,562
- Issue date Dec 11, 2012
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Variable resonator, tunable bandwidth filter, and electric circuit...
- Patent number 8,324,988
- Issue date Dec 4, 2012
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Power series digital predistorter and distortion compensation contr...
- Patent number 8,314,656
- Issue date Nov 20, 2012
- NTT DoCoMo, Inc.
- Junya Ohkawara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable resonator, variable bandwidth filter, and electric circuit...
- Patent number 8,294,537
- Issue date Oct 23, 2012
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multi-band lookup table type predistorter
- Patent number 8,295,789
- Issue date Oct 23, 2012
- NTT DoCoMo, Inc.
- Yasunori Suzuki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power series digital predistorter and control method therefor
- Patent number 8,184,739
- Issue date May 22, 2012
- NTT DoCoMo, Inc.
- Junya Ohkawara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Duplexer and transceiver
- Patent number 8,138,852
- Issue date Mar 20, 2012
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Signal selecting device
- Patent number 8,125,302
- Issue date Feb 28, 2012
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Variable resonator, tunable filter, and electric circuit device
- Patent number 8,106,727
- Issue date Jan 31, 2012
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Leakage power reduction apparatus
- Patent number 8,086,191
- Issue date Dec 27, 2011
- NTT DoCoMo, Inc.
- Atsushi Fukuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio communication device and power supplying method for radio com...
- Patent number 8,073,407
- Issue date Dec 6, 2011
- NTT DoCoMo, Inc.
- Atsushi Fukuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Coplanar waveguide resonator and coplanar waveguide filter using th...
- Patent number 7,978,027
- Issue date Jul 12, 2011
- NTT DoCoMo, Inc.
- Kei Satoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Non-reciprocal circuit device
- Patent number 7,978,018
- Issue date Jul 12, 2011
- NTT DoCoMo, Inc.
- Takayuki Furuta
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Power series predistorter and control method thereof
- Patent number 7,948,311
- Issue date May 24, 2011
- NTT DoCoMo, Inc.
- Yasunori Suzuki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power series predistorter and control method thereof
- Patent number 7,907,678
- Issue date Mar 15, 2011
- NTT DoCoMo, Inc.
- Shinji Mizuta
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
WIRELESS CIRCUIT AND FREQUENCY PAIR DETERMINATION METHOD
- Publication number 20140349592
- Publication date Nov 27, 2014
- NTT DoCoMo, Inc.
- Hiroshi Okazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FRONT-END CIRCUIT AND IMPEDANCE ADJUSTMENT METHOD
- Publication number 20140321312
- Publication date Oct 30, 2014
- NTT DoCoMo, Inc.
- Shoichi Narahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PREDISTORTER AND PREDISTORTER CONTROL METHOD
- Publication number 20140191799
- Publication date Jul 10, 2014
- NTT DoCoMo, Inc.
- Junya Ohkawara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
POWER SERIES DIGITAL PREDISTORTER AND CONTROL METHOD THEREOF
- Publication number 20130141160
- Publication date Jun 6, 2013
- NTT DoCoMo, Inc.
- Junya Ohkawara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VARIABLE RESONATOR, TUNABLE BANDWIDTH FILTER, AND ELECTRIC CIRCUIT...
- Publication number 20130057363
- Publication date Mar 7, 2013
- NTT DoCoMo, Inc.
- Kunihiro KAWAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VARIABLE RESONATOR, VARIABLE BANDWIDTH FILTER, AND ELECTRIC CIRCUIT...
- Publication number 20130002374
- Publication date Jan 3, 2013
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VARIABLE MATCHING CIRCUIT
- Publication number 20120176205
- Publication date Jul 12, 2012
- NTT DoCoMo, Inc.
- Takayuki Furuta
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VARIABLE RESONATOR, TUNABLE FILTER, AND ELECTRIC CIRCUIT DEVICE
- Publication number 20120098616
- Publication date Apr 26, 2012
- NTT DoCoMo, Inc.
- Kunihiro KAWAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTIMODE FRONTEND CIRCUIT
- Publication number 20120049985
- Publication date Mar 1, 2012
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTIBAND MATCHING CIRCUIT
- Publication number 20120044026
- Publication date Feb 23, 2012
- NTT DoCoMo, Inc.
- Atsushi FUKUDA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VARIABLE IMPEDANCE MATCHING CIRCUIT
- Publication number 20120032751
- Publication date Feb 9, 2012
- NTT DoCoMo, Inc.
- Atsushi FUKUDA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTIBAND RESONATOR AND MULTIBAND-PASS FILTER
- Publication number 20110316652
- Publication date Dec 29, 2011
- NTT DoCoMo, Inc.
- Kei SATOH
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTIROLE CIRCUIT ELEMENT CAPABLE OF OPERATING AS VARIABLE RESONATO...
- Publication number 20110215886
- Publication date Sep 8, 2011
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
POWER SERIES DIGITAL PREDISTORTER AND DISTORTION COMPENSATION CONTR...
- Publication number 20110210789
- Publication date Sep 1, 2011
- NTT DoCoMo, Inc.
- Junya OHKAWARA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VARIABLE RESONATOR AND VARIABLE FILTER
- Publication number 20110115574
- Publication date May 19, 2011
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
BIAS CIRCUIT
- Publication number 20110080230
- Publication date Apr 7, 2011
- NTT DoCoMo, Inc.
- Atsushi FUKUDA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
POWER SERIES DIGITAL PREDISTORTER AND DISTORTION COMPENSATION CONTR...
- Publication number 20110050339
- Publication date Mar 3, 2011
- NTT DoCoMo, Inc.
- Junya OHKAWARA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
POWER SERIES DIGITAL PREDISTORTER AND CONTROL METHOD THEREFOR
- Publication number 20100295612
- Publication date Nov 25, 2010
- NTT DoCoMo, Inc.
- Junya OHKAWARA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTIBAND MATCHING CIRCUIT AND MULTIBAND POWER AMPLIFIER
- Publication number 20100194487
- Publication date Aug 5, 2010
- NTT DoCoMo, Inc.
- Atsushi FUKUDA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTIBAND MATCHING CIRCUIT AND MULTIBAND POWER AMPLIFIER
- Publication number 20100194491
- Publication date Aug 5, 2010
- NTT DoCoMo, Inc.
- Atsushi FUKUDA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
POWER SERIES PREDISTORTER AND CONTROL METHOD THEREOF
- Publication number 20100060356
- Publication date Mar 11, 2010
- NTT DoCoMo, Inc.
- Yasunori SUZUKI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
FEEDFORWARD AMPLIFIER AND CONTROL METHOD THEREOF
- Publication number 20090315622
- Publication date Dec 24, 2009
- NTT DoCoMo, Inc.
- Yasunori Suzuki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTI-BAND LOOKUP TABLE TYPE PREDISTORTER
- Publication number 20090264089
- Publication date Oct 22, 2009
- NTT DoCoMo, Inc.
- Yasunori Suzuki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DUAL-BAND BANDPASS RESONATOR AND DUAL-BAND BANDPASS FILTER
- Publication number 20090212886
- Publication date Aug 27, 2009
- NTT DoCoMo, Inc.
- Kei Satoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
NON-RECIPROCAL CIRCUIT DEVICE
- Publication number 20090206942
- Publication date Aug 20, 2009
- NTT DoCoMo, Inc.
- Takayuki FURUTA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MATCHING CIRCUIT
- Publication number 20090179711
- Publication date Jul 16, 2009
- NTT DoCoMo, Inc.
- Atsushi Fukuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MATCHING CIRCUIT
- Publication number 20090167458
- Publication date Jul 2, 2009
- NTT DoCoMo, Inc.
- Atsushi Fukuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DUPLEXER AND TRANSCEIVER
- Publication number 20090121803
- Publication date May 14, 2009
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SIGNAL SELECTING DEVICE
- Publication number 20090066443
- Publication date Mar 12, 2009
- NTT DoCoMo, Inc.
- Kunihiro KAWAI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VARIABLE CIRCUIT, COMMUNICATION APPARATUS, MOBILE COMMUNICATION APP...
- Publication number 20090002069
- Publication date Jan 1, 2009
- NTT DoCoMo, Inc.
- Takayuki FURUTA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Shoichi Narahashi

Person

Patents Grantslast 30 patents

Wireless circuit and frequency pair determination method

Front-end circuit and impedance adjustment method

Variable matching circuit

Multiband resonator and multiband-pass filter

Variable resonator and variable filter

Multirole circuit element capable of operating as variable resonato...

Multimode frontend circuit

Power series digital predistorter and distortion compensation contr...

Variable resonator, variable bandwidth filter, and electric circuit...

Bias circuit

Variable resonator, tunable bandwidth filter, and electric circuit...

Multiband matching circuit and multiband power amplifier

Dual-band bandpass resonator and dual-band bandpass filter

Multiband matching circuit

Multiband matching circuit and multiband power amplifier

Variable resonator, tunable filter, and electric circuit device

Variable resonator, tunable bandwidth filter, and electric circuit...

Power series digital predistorter and distortion compensation contr...

Variable resonator, variable bandwidth filter, and electric circuit...

Multi-band lookup table type predistorter

Power series digital predistorter and control method therefor

Duplexer and transceiver

Signal selecting device

Variable resonator, tunable filter, and electric circuit device

Leakage power reduction apparatus

Radio communication device and power supplying method for radio com...

Coplanar waveguide resonator and coplanar waveguide filter using th...

Non-reciprocal circuit device

Power series predistorter and control method thereof

Power series predistorter and control method thereof

Patents Applicationslast 30 patents

WIRELESS CIRCUIT AND FREQUENCY PAIR DETERMINATION METHOD

FRONT-END CIRCUIT AND IMPEDANCE ADJUSTMENT METHOD

PREDISTORTER AND PREDISTORTER CONTROL METHOD

POWER SERIES DIGITAL PREDISTORTER AND CONTROL METHOD THEREOF

VARIABLE RESONATOR, TUNABLE BANDWIDTH FILTER, AND ELECTRIC CIRCUIT...

VARIABLE RESONATOR, VARIABLE BANDWIDTH FILTER, AND ELECTRIC CIRCUIT...

VARIABLE MATCHING CIRCUIT

VARIABLE RESONATOR, TUNABLE FILTER, AND ELECTRIC CIRCUIT DEVICE

MULTIMODE FRONTEND CIRCUIT

MULTIBAND MATCHING CIRCUIT

VARIABLE IMPEDANCE MATCHING CIRCUIT

MULTIBAND RESONATOR AND MULTIBAND-PASS FILTER

MULTIROLE CIRCUIT ELEMENT CAPABLE OF OPERATING AS VARIABLE RESONATO...

POWER SERIES DIGITAL PREDISTORTER AND DISTORTION COMPENSATION CONTR...

VARIABLE RESONATOR AND VARIABLE FILTER

BIAS CIRCUIT

POWER SERIES DIGITAL PREDISTORTER AND DISTORTION COMPENSATION CONTR...

POWER SERIES DIGITAL PREDISTORTER AND CONTROL METHOD THEREFOR

MULTIBAND MATCHING CIRCUIT AND MULTIBAND POWER AMPLIFIER

MULTIBAND MATCHING CIRCUIT AND MULTIBAND POWER AMPLIFIER

POWER SERIES PREDISTORTER AND CONTROL METHOD THEREOF

FEEDFORWARD AMPLIFIER AND CONTROL METHOD THEREOF

MULTI-BAND LOOKUP TABLE TYPE PREDISTORTER

DUAL-BAND BANDPASS RESONATOR AND DUAL-BAND BANDPASS FILTER

NON-RECIPROCAL CIRCUIT DEVICE

MATCHING CIRCUIT

MATCHING CIRCUIT

DUPLEXER AND TRANSCEIVER

SIGNAL SELECTING DEVICE

VARIABLE CIRCUIT, COMMUNICATION APPARATUS, MOBILE COMMUNICATION APP...