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Journal Articles
- 2023
[j14]Mamoru Ugajin, Yuya Kakei, Nobuyuki Itoh:
A Study of Phase-Adjusting Architectures for Low-Phase-Noise Quadrature Voltage-Controlled Oscillators. IEICE Trans. Electron. 106(2): 59-66 (2023)- 2021
- [j13]Mamoru Ugajin, Yuya Kakei, Nobuyuki Itoh:
A quadrature voltage-controlled oscillator using phase-adjusting architecture for suppressing phase noise. IEICE Electron. Express 18(10): 20210173 (2021) - 2018
- [j12]Takefumi Hiraguri, Kentaro Nishimori, Yoshiaki Morino, Mamoru Ugajin, Hideaki Yoshino:
Novel Access Control Scheme with Collision Detection Utilizing MIMO Transmission Procedure in WLAN Systems. IEICE Trans. Commun. 101-B(7): 1561-1574 (2018) - 2017
- [j11]Mamoru Ugajin, Takuya Shindo, Tsuneo Tsukahara, Takefumi Hiraguri:
An (N+N2)-Mixer Architecture for a High-Image-Rejection Wireless Receiver with an N-Phase Active Complex Filter. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 100-A(4): 1008-1014 (2017) - 2015
- [j10]Mamoru Ugajin, Yuta Kobayashi, Tsuneo Tsukahara:
High-image-rejection wireless-receiver architecture with a 3-phase active RC complex filter. IEICE Electron. Express 12(12): 20150329 (2015) - 2013
- [j9]Mitsuo Nakamura, Mamoru Ugajin, Mitsuru Harada:
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. IEICE Trans. Electron. 96-C(1): 93-101 (2013) - 2012
- [j8]Mamoru Ugajin:
Proposal of channel-grouping wireless-transceiver architecture for suppressing local-oscillator phase noise. IEICE Electron. Express 9(2): 86-91 (2012) - [j7]Shoichi Oshima, Mamoru Ugajin, Mitsuru Harada:
Third-Harmonic Envelope Feedback Method for High-Efficiency Linear Power Amplifiers. IEICE Trans. Electron. 95-C(4): 713-716 (2012) - 2011
- [j6]Kenji Suzuki, Mamoru Ugajin, Mitsuru Harada:
A 5th-Order SC Complex BPF Using Series Capacitances for Low-IF Narrowband Wireless Receivers. IEICE Trans. Electron. 94-C(5): 890-895 (2011) - [j5]Kenji Suzuki, Mamoru Ugajin, Mitsuru Harada:
A 1-Mbps 1.6-µA Active-RFID CMOS LSI for the 300-MHz Frequency Band with an All-Digital RF Transmitting Scheme. IEICE Trans. Electron. 94-C(6): 1084-1090 (2011) - [j4]Mamoru Ugajin, Toshishige Shimamura, Shin'ichiro Mutoh, Mitsuru Harada:
Design and Performance of a Sub-Nano-Ampere Two-Stage Power Management Circuit in 0.35-µm CMOS for Dust-Size Sensor Nodes. IEICE Trans. Electron. 94-C(7): 1206-1211 (2011) - [j3]Mamoru Ugajin, Akihiro Yamagishi, Kenji Suzuki, Mitsuru Harada:
Operation of Ultra-Low Leakage Regulator Circuits with SOI and Bulk Technologies for Controlling Wireless Transceivers. IEICE Trans. Electron. 94-C(10): 1702-1705 (2011) - 2004
- [j2]Mamoru Ugajin, Akihiro Yamagishi, Junichi Kodate, Mitsuru Harada, Tsuneo Tsukahara:
Macromodels in the frequency domain analysis of microwave resonators. IEEE J. Solid State Circuits 39(4): 569-576 (2004) - 2002
- [j1]Mamoru Ugajin, Junichi Kodate, Tsuneo Tsukahara:
A 1-V 2-GHz RF Receiver with 49 dB of Image Rejection in CMOS/SIMOX. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 85-A(2): 293-299 (2002)
Conference and Workshop Papers
- 2015
- [c5]Mamoru Ugajin, Takuya Shindou:
Image-rejection-performance assessment of double-conversion wireless receiver with 3-phase complex filter using Montecarlo simulation. ISCIT 2015: 299-302 - 2010
- [c4]Toshishige Shimamura, Mamoru Ugajin, Kenji Suzuki, Kazuyoshi Ono, Norio Sato, Kei Kuwabara, Hiroki Morimura, Shin'ichiro Mutoh:
Nano-watt power management and vibration sensing on a dust-size batteryless sensor node for ambient intelligence applications. ISSCC 2010: 504-505 - 2004
- [c3]Mamoru Ugajin, Akihiro Yamagishi, Junichi Kodate, Mitsuru Harada, Tsuneo Tsukahara:
Design techniques for a 1-V operation Bluetooth RF transceiver. CICC 2004: 393-400 - 2003
- [c2]Tsuneo Tsukahara, Mitsuru Harada, Mamoru Ugajin, Junichi Kodate, Akihiro Yamagishi:
Design methodology of low-power CMOS RF-ICs. ASP-DAC 2003: 394-399 - [c1]Mamoru Ugajin, Tsuneo Tsukahara:
A 1-V 2.4-GHz FSK receiver with a complex BPF and a frequency doubler in CMOS/SOI. CICC 2003: 151-154
Coauthor Index
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