Mamoru Ugajin

According to our database, Mamoru Ugajin authored at least 19 papers between 2002 and 2023.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2023

A Study of Phase-Adjusting Architectures for Low-Phase-Noise Quadrature Voltage-Controlled Oscillators.

Mamoru Ugajin, Yuya Kakei, Nobuyuki Itoh

IEICE Trans. Electron., February, 2023

2021

A quadrature voltage-controlled oscillator using phase-adjusting architecture for suppressing phase noise.

Mamoru Ugajin, Yuya Kakei, Nobuyuki Itoh

IEICE Electron. Express, 2021

2018

Novel Access Control Scheme with Collision Detection Utilizing MIMO Transmission Procedure in WLAN Systems.

Takefumi Hiraguri, Kentaro Nishimori, Yoshiaki Morino, Mamoru Ugajin, Hideaki Yoshino

IEICE Trans. Commun., 2018

2017

An (<i>N</i>+<i>N</i>²)-Mixer Architecture for a High-Image-Rejection Wireless Receiver with an N-Phase Active Complex Filter.

Mamoru Ugajin, Takuya Shindo, Tsuneo Tsukahara, Takefumi Hiraguri

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017

2015

High-image-rejection wireless-receiver architecture with a 3-phase active RC complex filter.

Mamoru Ugajin, Yuta Kobayashi, Tsuneo Tsukahara

IEICE Electron. Express, 2015

Image-rejection-performance assessment of double-conversion wireless receiver with 3-phase complex filter using Montecarlo simulation.

Mamoru Ugajin, Takuya Shindou

Proceedings of the 15th International Symposium on Communications and Information Technologies, 2015

2013

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

IEICE Trans. Electron., 2013

2012

Third-Harmonic Envelope Feedback Method for High-Efficiency Linear Power Amplifiers.

Shoichi Oshima, Mamoru Ugajin, Mitsuru Harada

IEICE Trans. Electron., 2012

Proposal of channel-grouping wireless-transceiver architecture for suppressing local-oscillator phase noise.

Mamoru Ugajin

IEICE Electron. Express, 2012

2011

Operation of Ultra-Low Leakage Regulator Circuits with SOI and Bulk Technologies for Controlling Wireless Transceivers.

Mamoru Ugajin, Akihiro Yamagishi, Kenji Suzuki, Mitsuru Harada

IEICE Trans. Electron., 2011

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

IEICE Trans. Electron., 2011

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

IEICE Trans. Electron., 2011

A 5th-Order SC Complex BPF Using Series Capacitances for Low-IF Narrowband Wireless Receivers.

Kenji Suzuki, Mamoru Ugajin, Mitsuru Harada

IEICE Trans. Electron., 2011

2010

Nano-watt power management and vibration sensing on a dust-size batteryless sensor node for ambient intelligence applications.

Toshishige Shimamura, Mamoru Ugajin, Kenji Suzuki, Kazuyoshi Ono, Norio Sato, Kei Kuwabara, Hiroki Morimura, Shin'ichiro Mutoh

Proceedings of the IEEE International Solid-State Circuits Conference, 2010

2004

Macromodels in the frequency domain analysis of microwave resonators.

Mamoru Ugajin, Akihiro Yamagishi, Junichi Kodate, Mitsuru Harada, Tsuneo Tsukahara

IEEE J. Solid State Circuits, 2004

Design techniques for a 1-V operation Bluetooth RF transceiver.

Mamoru Ugajin, Akihiro Yamagishi, Junichi Kodate, Mitsuru Harada, Tsuneo Tsukahara

Proceedings of the IEEE 2004 Custom Integrated Circuits Conference, 2004

2003

A 1-V 2.4-GHz FSK receiver with a complex BPF and a frequency doubler in CMOS/SOI.

Mamoru Ugajin, Tsuneo Tsukahara

Proceedings of the IEEE Custom Integrated Circuits Conference, 2003

Design methodology of low-power CMOS RF-ICs.

Tsuneo Tsukahara, Mitsuru Harada, Mamoru Ugajin, Junichi Kodate, Akihiro Yamagishi

Proceedings of the 2003 Asia and South Pacific Design Automation Conference, 2003

2002

A 1-V 2-GHz RF Receiver with 49 dB of Image Rejection in CMOS/SIMOX.

Mamoru Ugajin, Junichi Kodate, Tsuneo Tsukahara

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002