Keiji YOSHIDA


60 GHz Millimeter-Wave CMOS Integrated On-Chip Open Loop Resonator Bandpass Filters on Patterned Ground Shields
Ramesh K. POKHAREL Xin LIU Dayang A.A. MAT Ruibing DONG Haruichi KANAYA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/02/01
Vol. E96-C  No. 2  pp. 270-276
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
millimeter-waveon-chip band pass filterpattern ground shieldsfolded structuresystem on chip
 Summary | Full Text:PDF(2.4MB)

Low Phase Noise 14-Bit Digitally Controlled CMOS Quadrature Ring Oscillator
Ramesh K. POKHAREL Prapto NUGROHO Awinash ANAND Abhishek TOMAR Haruichi KANAYA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/02/01
Vol. E96-C  No. 2  pp. 262-269
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
sub-feedbackphase noisering oscillatordigitally controlled oscillatorquadrature outputs
 Summary | Full Text:PDF(3.3MB)

A Wide Range CMOS Power Amplifier with Improved Group Delay Variation and Gain Flatness for UWB Transmitters
Rohana SAPAWI Ramesh K. POKHAREL Haruichi KANAYA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/07/01
Vol. E95-C  No. 7  pp. 1182-1188
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave Systems and Their Fundamental Technologies)
Category: 
Keyword: 
CMOS power amplifiergroup delay variationgain flatnessultra-wideband (UWB)
 Summary | Full Text:PDF(2.1MB)

A Wide Tuning Range CMOS Quadrature Ring Oscillator with Improved FoM for Inductorless Reconfigurable PLL
Ramesh K. POKHAREL Shashank LINGALA Awinash ANAND Prapto NUGROHO Abhishek TOMAR Haruichi KANAYA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/10/01
Vol. E94-C  No. 10  pp. 1524-1532
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Active Devices and Circuits
Keyword: 
frequency tuning sensitivityfeed forward techniquefigure of meritphase noisering oscillatorreconfigurable wireless system quadrature outputs0.18 µm CMOS
 Summary | Full Text:PDF(1.4MB)

Modeling of Non-linearity in Digitally Controlled Oscillator in 0.18 µm CMOS Technology
Abhishek TOMAR Shashank LINGALA Ramesh K. POKHAREL Haruichi KANAYA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/10/01
Vol. E93-C  No. 10  pp. 1548-1549
Type of Manuscript:  LETTER
Category: Microwaves, Millimeter-Waves
Keyword: 
DCODNLtuning rangemonotonicityphase noise0.18 µm CMOS
 Summary | Full Text:PDF(509KB)

Low Phase Noise, 18 kHz Frequency Tuning Step, 5 GHz, 15 bit Digitally Controlled Oscillator in 0.18 µm CMOS Technology
Ramesh K. POKHAREL Kenta UCHIDA Abhishek TOMAR Haruichi KANAYA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/07/01
Vol. E93-C  No. 7  pp. 1007-1013
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
digitally controlled oscillatortiny capacitorphase noisefrequency tuning step5-GHz-band wireless LAN0.18 µm CMOS
 Summary | Full Text:PDF(2.5MB)

Design of 5 GHz-Band Power Amplifier with On-Chip Matching Circuits Using CPW Impedance (K) Inverters
Ramesh Kumar POKHAREL Haruichi KANAYA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/11/01
Vol. E91-C  No. 11  pp. 1824-1827
Type of Manuscript:  LETTER
Category: Microwaves, Millimeter-Waves
Keyword: 
on-chip CPW impedance-matching circuit5GHz-band wireless LANλ/4 resonatorpower amplifier
 Summary | Full Text:PDF(649.1KB)

Design and Verification of On-Chip Impedance-Matching Circuit Using Transmission-Line Theory for 2.4 GHz-Band Wireless Receiver Front-End
Haruichi KANAYA Ramesh K. POKHAREL Fuminori KOGA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/12/01
Vol. E89-C  No. 12  pp. 1888-1895
Type of Manuscript:  Special Section PAPER (Special Section on Emerging Microwave Techniques)
Category: Passive Circuits/Components
Keyword: 
CPW lineimpedance-matching circuit2.4 GHz-band wireless LANλ/4 resonatortransmission-line theory
 Summary | Full Text:PDF(1.6MB)

Design of a Miniaturized Superconducting Bandpass Filter by Evaluating the Kinetic Inductance in the K-Inverter
Haruichi KANAYA Koji KAWAKAMI Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/02/01
Vol. E89-C  No. 2  pp. 145-150
Type of Manuscript:  Special Section PAPER (Special Section on Superconducting High-frequency Devices)
Category: 
Keyword: 
HTS passive devicebandpass filterquarter-wavelength resonatormeander linecoplanar waveguide
 Summary | Full Text:PDF(980KB)

Electrically Small Antennas with Miniaturized Impedance Matching Circuits for Semiconductor Amplifiers
Keiji YOSHIDA Yukako TSUTSUMI Haruichi KANAYA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/07/01
Vol. E88-C  No. 7  pp. 1368-1374
Type of Manuscript:  Special Section PAPER (Special Section on Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with Their Applications)
Category: Active Circuits & Antenna
Keyword: 
RF front-endminiaturized matching circuitelectrically small antennasemiconductor amplifiercoplanar waveguide
 Summary | Full Text:PDF(2.8MB)

Design and Performance of High Tc Superconducting Coplanar Waveguide Matching Circuit for RF-CMOS LNA
Haruichi KANAYA Yoko KOGA Jun FUJIYAMA Go URAKAWA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/01/01
Vol. E86-C  No. 1  pp. 37-42
Type of Manuscript:  Special Section PAPER (Special Issue on Superconductor Digital/Analog Circuit Technologies)
Category: HTS Digital Applications
Keyword: 
microwave deviceCMOS low noise amplifiermatching circuitcoplanar waveguide (CPW)HTS device
 Summary | Full Text:PDF(782.5KB)

Design and Performance of Miniaturized HTS Coplanar Waveguide Bandpass Filters with Highly Packed Meanderlines
Haruichi KANAYA Yoko KOGA Tatsunori SHINTO Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 708-713
Type of Manuscript:  Special Section PAPER (Special Issue on Superconductive Electronics)
Category: Microwave Devices and Systems
Keyword: 
microwave devicebandpass filtercoplanar waveguideHTS passive device
 Summary | Full Text:PDF(3.3MB)

Modeling of High-Tc Superconducting Transmission Lines with Anisotropic Complex Conductivity
Keiji YOSHIDA Haruyuki TAKEYOSHI Hiroshi MORITA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/01/25
Vol. E83-C  No. 1  pp. 7-14
Type of Manuscript:  Special Section PAPER (Special Issue on Superconductive Devices and Systems)
Category: Microwave Devices
Keyword: 
high Tc superconducting transmission lineweakly coupled grain modelanisotropic complex conductivity
 Summary | Full Text:PDF(816.3KB)

FOREWORD
Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/01/25
Vol. E83-C  No. 1  pp. 1-1
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(11.6KB)

Evaluation of Microwave Complex Conductivities of YBa2Cu3Ox Thin Films
Keiji YOSHIDA Tetsuo ADOU Shido NISHIOKA Yutaka KANDA Hisashi SHIMAKAGE Zhen WANG 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/10/25
Vol. E81-C  No. 10  pp. 1565-1572
Type of Manuscript:  Special Section PAPER (Special Issue on Low- and High-Temperature Superconductive Electron Devices and Their Applications)
Category: High-Frequency Properties of Thin Films
Keyword: 
high Tc thin filmYBa2Cu3Oxcomplex conductivityweakly coupled grain model
 Summary | Full Text:PDF(671.8KB)

Weakly Coupled Grain Model for the Residual Surface Resistance of YBa2Cu3Ox Thin Films
Keiji YOSHIDA Tomohiro ONOUE Takanobu KISS Hisashi SHIMAKAGE Zhen WANG 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/09/25
Vol. E79-C  No. 9  pp. 1254-1259
Type of Manuscript:  Special Section PAPER (Special Issue on Toward Digital and Analog Applications of Superconductors)
Category: Device technology
Keyword: 
weakly coupled grain modelhigh Tc thin filmYBa2Cu3Ox residual surface resistance
 Summary | Full Text:PDF(461KB)

LiNbO3 Optical Modulator Using a Superconducting Resonant Electrode
Keiji YOSHIDA Akihiko NOMURA Yutaka KANDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1994/08/25
Vol. E77-C  No. 8  pp. 1181-1184
Type of Manuscript:  Special Section PAPER (Special Section on Superconducting Devices)
Category: LTS
Keyword: 
LiNbO3 optical modulatorsuperconducting electroderesonant type optical modulator
 Summary | Full Text:PDF(351.4KB)

Microwave Characteristics of a Traveling-Wave Type LiNbO3 Optical Modulator with Superconducting Electrodes
Keiji YOSHIDA Noriaki HORIGUCHI Yutaka KANDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1993/08/25
Vol. E76-C  No. 8  pp. 1287-1290
Type of Manuscript:  Special Section PAPER (Special Issue on High-Temperature Superconducting Electronics)
Category: 
Keyword: 
LiNbO3 optical modulatorsuperconducting electrodestraveling-wave type optical modulatormicrowave characteristics
 Summary | Full Text:PDF(338.3KB)

LiNbO3 Optical Modulator with Superconducting Electrodes
Keiji YOSHIDA Katsuhiko IKEDA Yutaka KANDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1992/08/25
Vol. E75-C  No. 8  pp. 894-899
Type of Manuscript:  Special Section PAPER (Special Issue on Cryogenic Microwave Devices)
Category: Passive Devices
Keyword: 
LiNbO3 optical modulatorsuperconducting electrodes
 Summary | Full Text:PDF(447.2KB)

RF Properties of the Coupling Circuit between dc SQUID and Multiturn Input Coil
Keiji ENPUKU Toshihiro TANAKA Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1991/07/25
Vol. E74-C  No. 7  pp. 2020-2028
Type of Manuscript:  Special Section PAPER (Special Issue on Low Temperature Electronics)
Category: 
Keyword: 
 Summary | Full Text:PDF(635.7KB)

Josephson NDRO Memory Cell with a Direct-Coupled Sense Gate
Keiji ENPUKU Kuniaki SUEOKA Keiji YOSHIDA Fujio IRIE 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1984/06/25
Vol. E67-E  No. 6  pp. 331-332
Type of Manuscript:  LETTER
Category: Other Devices
Keyword: 
 Summary | Full Text:PDF(140.7KB)

Minimum Current of a Two-Junction SQUID Gate
Keiji ENPUKU Kuniaki SUEOKA Keiji YOSHIDA Fujio IRIE 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1984/01/25
Vol. E67-E  No. 1  pp. 33-39
Type of Manuscript:  PAPER
Category: Other Devices
Keyword: 
 Summary | Full Text:PDF(506KB)

Flux-Flow Type Josephson Oscillator with a Coupling Circuit to a Quasiparticle Detector
Tadao NAGATSUMA Keiji ENPUKU Fujio IRIE Keiji YOSHIDA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1983/11/25
Vol. E66-E  No. 11  pp. 680-681
Type of Manuscript:  LETTER
Category: Other Devices
Keyword: 
 Summary | Full Text:PDF(157.8KB)

Dynamic Properties of Josephson-Junction Circuits
Keiji YOSHIDA Katsushi IWASHITA Fujio IRIE 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1980/01/25
Vol. E63-E  No. 1  pp. 24-30
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
 Summary | Full Text:PDF(491.7KB)