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Mamoru UGAJIN

Novel Access Control Scheme with Collision Detection Utilizing MIMO Transmission Procedure in WLAN Systems Takefumi HIRAGURI Kentaro NISHIMORI Yoshiaki MORINO Mamoru UGAJIN Hideaki YOSHINO
Publication: Publication Date: 2018/07/01 Vol. E101-B No. 7 pp. 1561-1574 Type of Manuscript: Special Section PAPER (Special Section on Communication Quality in Wireless Networks) Category: Keyword: MIMO, access control, WLAN, collision detection, orthogonally polarized antenna,
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An (N+N²)-Mixer Architecture for a High-Image-Rejection Wireless Receiver with an N-Phase Active Complex Filter Mamoru UGAJIN Takuya SHINDO Tsuneo TSUKAHARA Takefumi HIRAGURI
Publication: Publication Date: 2017/04/01 Vol. E100-A No. 4 pp. 1008-1014 Type of Manuscript: PAPER Category: Circuit Theory Keyword: integrated circuit, wireless receiver, image rejection, mismatch correction, 3-phase analog circuit, complex filter,
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A 280-MHz CMOS Intra-Symbol Intermittent RF Front End for Adaptive Power Reduction of Wireless Receivers According to Received-Signal Intensity in Sensor Networks Mitsuo NAKAMURA Mamoru UGAJIN Mitsuru HARADA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2013/01/01 Vol. E96-C No. 1 pp. 93-101 Type of Manuscript: PAPER Category: Electronic Circuits Keyword: intra-symbol intermittent, RF front end, low power, wireless receiver, RF CMOS, sensor network,
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Third-Harmonic Envelope Feedback Method for High-Efficiency Linear Power Amplifiers Shoichi OSHIMA Mamoru UGAJIN Mitsuru HARADA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2012/04/01 Vol. E95-C No. 4 pp. 713-716 Type of Manuscript: BRIEF PAPER Category: Keyword: power amplifier, distortion, linearizer, harmonics, feedback,
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Operation of Ultra-Low Leakage Regulator Circuits with SOI and Bulk Technologies for Controlling Wireless Transceivers Mamoru UGAJIN Akihiro YAMAGISHI Kenji SUZUKI Mitsuru HARADA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2011/10/01 Vol. E94-C No. 10 pp. 1702-1705 Type of Manuscript: BRIEF PAPER Category: Electronic Circuits Keyword: power management, power-switch, energy harvesting, CMOS,
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Design and Performance of a Sub-Nano-Ampere Two-Stage Power Management Circuit in 0.35-µm CMOS for Dust-Size Sensor Nodes Mamoru UGAJIN Toshishige SHIMAMURA Shin'ichiro MUTOH Mitsuru HARADA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2011/07/01 Vol. E94-C No. 7 pp. 1206-1211 Type of Manuscript: PAPER Category: Electronic Circuits Keyword: sensor node, power management, power switch, energy harvesting, CMOS,
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A 1-Mbps 1.6-µA Active-RFID CMOS LSI for the 300-MHz Frequency Band with an All-Digital RF Transmitting Scheme Kenji SUZUKI Mamoru UGAJIN Mitsuru HARADA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2011/06/01 Vol. E94-C No. 6 pp. 1084-1090 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: active tags, RFID, VHF, low power, transmitter, OOK, wireless sensor networks,
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A 5th-Order SC Complex BPF Using Series Capacitances for Low-IF Narrowband Wireless Receivers Kenji SUZUKI Mamoru UGAJIN Mitsuru HARADA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2011/05/01 Vol. E94-C No. 5 pp. 890-895 Type of Manuscript: PAPER Category: Electronic Circuits Keyword: complex filters, BPF, switched-capacitor circuits, low-IF, CMOS, low-power,
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A 2.4-GHz PLL Synthesizer for a 1-V Bluetooth RF Transceiver Akihiro YAMAGISHI Mamoru UGAJIN Tsuneo TSUKAHARA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2004/06/01 Vol. E87-C No. 6 pp. 895-900 Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit and Device Technologies) Category: Keyword: PLL, synthesizer, low-power, phase noise, Bluetooth,
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A 1-V 2.4-GHz Downconverter for FSK Wireless Applications with a Complex BPF and a Frequency Doubler in CMOS/SOI Mamoru UGAJIN Junichi KODATE Tsuneo TSUKAHARA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2004/06/01 Vol. E87-C No. 6 pp. 888-894 Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit and Device Technologies) Category: Keyword: RF, FSK downconverter, CMOS, SOI, complex BPF, frequency doubler,
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Gain Improvement of a 2.4-GHz/5-GHz CMOS Low Noise Amplifier by Using High-Resistivity Silicon-on-Insulator Wafers Junichi KODATE Mamoru UGAJIN Tsuneo TSUKAHARA Takakuni DOUSEKI Nobuhiko SATO Takehito OKABE Kazuaki OHMI Takao YONEHARA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/06/01 Vol. E86-C No. 6 pp. 1041-1049 Type of Manuscript: Special Section PAPER (Special Issue on Devices and Circuits for Next Generation Multi-Media Communication Systems) Category: Keyword: RFIC, CMOS, LNA, silicon-on-insulator, SOI,
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A 0.6-V Supply, Voltage-Reference Circuit Based on Threshold-Voltage-Summation Architecture in Fully-Depleted CMOS/SOI Mamoru UGAJIN Kenji SUZUKI Tsuneo TSUKAHARA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2002/08/01 Vol. E85-C No. 8 pp. 1588-1595 Type of Manuscript: Special Section PAPER (Special Issue on High-Performance Analog Integrated Circuits) Category: Keyword: voltage reference, CMOS, low voltage, SOI,
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A 1-V 2-GHz RF Receiver with 49 dB of Image Rejection in CMOS/SIMOX Mamoru UGAJIN Junichi KODATE Tsuneo TSUKAHARA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2002/02/01 Vol. E85-A No. 2 pp. 293-299 Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics) Category: Keyword: image rejection, CMOS, low voltage, SOI, RF,
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Emitter-Resistance Effect on Cutoff Frequency of Widegap-Emitter Si HBTs Mamoru UGAJIN Yoshihito AMEMIYA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1991/06/25 Vol. E74-C No. 6 pp. 1609-1614 Type of Manuscript: Special Section PAPER (Special Issue on Device and Process Simulation for Ultra Large Scale Integration) Category: Keyword:
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