Ultra-Wideband Pulse Generator with Simultaneous Optimization of Sidelobe Suppression and Essential Bandwidth

Hafiz Usman Mahmood; Joo Sung Kim; Sang Gug Lee

doi:10.23075/jicas.2023.9.3.005

Hafiz Usman Mahmood Korea Advanced Institute of Science and Technology
Joo Sung Kim Hanbat National University
Sang Gug Lee Korea Advanced Institute of Science and Technology

DOI: https://doi.org/10.23075/jicas.2023.9.3.005

Keywords: Impulse Radio(IR), Pulse Generator(PG), Sidelobe Suppression, Ultra-Wide Band(UWB)

Abstract

Impulse-radio ultra-wideband signaling is being widely used in small-distance, low-power, and low-cost applications such as wireless sensor networks (WSN) and wireless personal area networks (WPAN). This paper presents an on-off keying-driven impulse radio ultra-wideband pulse generator aimed at wireless-powered applications. The proposed impulse-radio ultra-wideband pulse generator is built upon a pseudo-digital architecture, with the core cell being implemented using digital gates to achieve the desired timing delay. To eliminate the need for an external pulse-shaping filter, a pulse-shaping scheme based on the power transistor sizing technique is exploited to generate a broadband pulse with triangular envelope; ensuring enhanced sidelobe suppression in compliance with the FCC spectral mask for UWB communications and extended signal bandwidth to utilize the given spectrum more efficiently. The prototype pulse generator is implemented in 65-nm RF CMOS technology with TSMC 65nm GP process. The measurement results show an energy consumption of 34-pJ/pulse with a pulse amplitude of 577-mVpp, a 10-dB bandwidth of 1.14 GHz, and more than 30-dB sidelobe suppression in the DC-2.8 GHz band.

Author Biographies

Hafiz Usman Mahmood, Korea Advanced Institute of Science and Technology

Hafiz Usman Mahmood received a B.E. degree in electrical engineering from the National University of Sciences and Technology (NUST), Islamabad, Pakistan, in 2016, and an M.S. degree in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2019, where he is currently pursuing the Ph.D. degree.
His current research interests include the design of broadband transceiver circuits based on CMOS technology.

Joo Sung Kim, Hanbat National University

Jusung Kim received the B.S. degree (with highest Hons.) from Yonsei University, Seoul, South Korea, in 2006, and the Ph.D. degree from Texas A&M University, College Station, TX, USA, in 2011, both in electrical engineering.
In 2008, he was an Analog Integrated Circuit Design Engineer with the Texas Instruments Incorporated, Dallas, TX, USA, where he designed an RF front end for a multistandard analog and digital TV silicon tuners. From 2011 to 2015, he was with the Qualcomm Technologies Inc., San Diego, CA, USA, where he designed radio frequency integrated circuits (RFIC) products for 3G and 4G cellular systems.
He is currently an Associate Professor with the Department of Electronics and Control Engineering, Hanbat National University, Daejeon, South Korea. His current research focuses on the design and fabrication of low-power integrated circuits for communication and biomedical applications.
Dr. Kim was an Associate Editor for the IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II—EXPRESS BRIEFS from 2014 to 2015. He is currently an Analog Signal Processing Technical Committee Member of IEEE Circuits and Systems Society.

Sang Gug Lee, Korea Advanced Institute of Science and Technology

Sang-Gug Lee (Member, IEEE) received a B.S. degree in electronic engineering from Kyungpook National University, Daegu, South Korea, in 1981 and an M.S. and Ph.D. degrees in electrical engineering from the University of Florida, Gainesville, FL, USA, in 1989 and 1992, respectively.
In 1992, he joined Harris Semiconductor, Melbourne, FL, USA, where he was involved in silicon-based radio frequency (RF) integrated circuit designs. From 1995 to 1998, he was an Assistant Professor at the School of Computer and Electrical Engineering, Handong University, Pohang, South Korea. From 1998 to 2009, he was a Professor at the Information and Communications University, Daejeon, South Korea. Since 2009, he has been a Professor with the Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon. He served as the Research Director for the Auto-ID Laboratory KAIST, from 2005 to 2010. In 2007, his laboratory was selected as a National Research Laboratory. Since 2012, he has been serving as the Director for the Future Promising Fusion Technology Pioneer Center, leading a research group in the area of silicon-technology-based terahertz integrated circuit (IC) design. His current research interests include complementary metal–oxide–semiconductor (CMOS)-based radio frequency (RF), analog, and mixed-mode IC designs for various radio transceiver applications, low-power transceivers, extreme high-frequency (terahertz) circuit design based on CMOS technology, and other analog integrated circuit designs such as display semiconductors, power management ICs, and automotive ICs. Dr. Lee served as a Technical Committee member for IEEE ISSCC of the Wireless Communication Technology Committee from 2005 to 2009.

Homepage : http://nice.kaist.ac.kr/

Ultra-Wideband Pulse Generator with Simultaneous Optimization of Sidelobe Suppression and Essential Bandwidth

Abstract

Author Biographies

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