Toshifumi NAKATANI


A Low Distortion and Low Noise Differential Amplifier Suitable for 3G LTE Applications Using the Even- and Odd-Mode Impedance Differences of a Bias Circuit
Toshifumi NAKATANI Koichi OGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/06/01
Vol. E91-C  No. 6  pp. 844-853
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
3rd order intermodulationnoise figuredifferential amplifier2-tone difference frequencyeven- and odd-mode impedance differenceinput bias circuit3rd generation long term evolution
 Summary | Full Text:PDF

IM3 Cancellation Method Using Current Feedback Suitable for a Multi-Stage RFIC Amplifier
Toshifumi NAKATANI Koichi OGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/06/01
Vol. E90-C  No. 6  pp. 1209-1221
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
feedback amplifier3rd order Intermodulation distortionIM3 cancellation techniqueIM3 phaseintegrated circuit designVolterra seriesload-pull measurement2nd order non-linearity
 Summary | Full Text:PDF

A New Design Concept for Balanced-Type SAW Filters Using a Common-Mode Signal Suppression Circuit
Hiroyuki NAKAMURA Toshio ISHIZAKI Toshifumi NAKATANI Shigeru TSUZUKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/01/01
Vol. E88-C  No. 1  pp. 28-33
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics)
Category: 
Keyword: 
SAW filterbalanced-typecommon-modedifferential-modebalance characteristics
 Summary | Full Text:PDF

A Simple Method for the Measurement of the Phase and Power of 3rd-Order Inter-Modulation Components of the Output of Multi-Stage Power Amplifiers
Toshifumi NAKATANI Toru MATSUURA Koichi OGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/05/01
Vol. E87-C  No. 5  pp. 749-761
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Characterization and Measurement Technologies for Microwave and Millimeter-Wave Materials, Devices and Circuits)
Category: Active Devices and Circuits
Keyword: 
3rd-order inter-modulation distortionphase of IM3 signaldissipation powervector signal analyzermulti-stage cascaded power amplifierVolterra seriesasymmetry of IM3 sidebands
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A Three-Mode Switched-LNA Using a Low Parasitic Capacitance MOSFET Switch
Toshifumi NAKATANI Koichi OGAWA Junji ITOH Ikuo IMANISHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/06/01
Vol. E86-C  No. 6  pp. 1032-1040
Type of Manuscript:  Special Section PAPER (Special Issue on Devices and Circuits for Next Generation Multi-Media Communication Systems)
Category: 
Keyword: 
low noise amplifiernoise figureMOSFET switchparasitic capacitance3rd-order intercept pointdissipation powercross-modulation
 Summary | Full Text:PDF