Takashi OSHIMA


Reference-Free Deterministic Calibration of Pipelined ADC
Takashi OSHIMA Taizo YAMAWAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/02/01
Vol. E98-A  No. 2  pp. 665-675
Type of Manuscript:  PAPER
Category: Analog Signal Processing
Keyword: 
deterministic calibrationditherLMS algorithmpipelined ADCmulti-bit/stage MDAC
 Summary | Full Text:PDF(2MB)

Adaptive Circuits for the 0.5-V Nanoscale CMOS Era
Kiyoo ITOH Masanao YAMAOKA Takashi OSHIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/03/01
Vol. E93-C  No. 3  pp. 216-233
Type of Manuscript:  INVITED PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
minimum operating voltageSRAMDRAMFD-SOIFinFET
 Summary | Full Text:PDF(2.2MB)

A Dual-Mode Bluetooth Transceiver with a Two-Point-Modulated Polar-Loop Transmitter and a Frequency-Offset-Compensated Receiver
Takashi OSHIMA Masaru KOKUBO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/08/01
Vol. E90-A  No. 8  pp. 1669-1678
Type of Manuscript:  PAPER
Category: Circuit Theory
Keyword: 
dual-mode BluetoothGFSKπ/4-DQPSKpolar looptwo-point modulationDC-DC converterpower efficiencydelay detectorfrequency offset
 Summary | Full Text:PDF(1.1MB)

Spread-Spectrum Clock Generator for Serial ATA with Multi-Bit ΣΔ Modulator-Controlled Fractional PLL
Masaru KOKUBO Takashi KAWAMOTO Takashi OSHIMA Takayuki NOTO Masato SUZUKI Shigeyuki SUZUKI Takashi HAYASAKA Tomoaki TAKAHASHI Jun KASAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/11/01
Vol. E89-C  No. 11  pp. 1682-1688
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
PLLspread-spectrumjitterserial ATA
 Summary | Full Text:PDF(769KB)

A GFSK Transmitter Architecture for a Bluetooth RF-IC, Featuring a Variable-Loop-Bandwidth Phase-Locked Loop Modulator
Masaru KOKUBO Takashi OSHIMA Katsumi YAMAMOTO Kunio TAKAYASU Yoshiyuki EZUMI Shinya AIZAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/03/01
Vol. E88-C  No. 3  pp. 385-394
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
FSKmodulatordelta-sigmaPLLvariable loop bandwidthBluetooth
 Summary | Full Text:PDF(1.7MB)

A Small-Chip-Area Transceiver IC for Bluetooth Featuring a Digital Channel-Selection Filter
Masaru KOKUBO Masaaki SHIDA Takashi OSHIMA Yoshiyuki SHIBAHARA Tatsuji MATSUURA Kazuhiko KAWAI Takefumi ENDO Katsumi OSAKI Hiroki SONODA Katsumi YAMAMOTO Masaharu MATSUOKA Takao KOBAYASHI Takaaki HEMMI Junya KUDOH Hirokazu MIYAGAWA Hiroto UTSUNOMIYA Yoshiyuki EZUMI Kunio TAKAYASU Jun SUZUKI Shinya AIZAWA Mikihiko MOTOKI Yoshiyuki ABE Takao KUROSAWA Satoru OOKAWARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/06/01
Vol. E87-C  No. 6  pp. 878-887
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit and Device Technologies)
Category: 
Keyword: 
Bluetooth transceiverlow-IFVCOchannel-selection filter
 Summary | Full Text:PDF(1.5MB)