Design of a Low power Transmitter for Biomedical application in 180nm CMOS

Dae Hyeon kwon; Dong Hyun Youn; Min Kyu Je

doi:10.23075/jicas.2022.8.2.006

Dae Hyeon kwon Korea Advanced Institute of Science and Technology
Dong Hyun Youn Korea Advanced Institute of Science and Technology
Min Kyu Je Korea Advanced Institute of Science and Technology

DOI: https://doi.org/10.23075/jicas.2022.8.2.006

Keywords: 16QAM, Biomedical, Capsule endoscopy, Low power, Transmitter

Abstract

In this study, we propose a low-power transmitter system for biomedical applications. In particular, it aims at the development of a low-power transmitter targeting a capsule endoscopy among biomedical applications. It is necessary to transmit about 4 pictures per seconds for 8 hours for accurate endoscope. However, due to the limitation of the battery, it is difficult to transmit 4 pictures per seconds for 8 hours with a general battery. Therefore, by making a low-power transmitter, we improve the accuracy of the wireless endoscope regardless of the capacity of the battery. The proposed transmitter is consisted of counter-assisted digital PLL (Phase Locked Loops) and digital PA(Power amplifier) that consumes lower power than analog PA. The currently targeted low-power transmitter is a transmitter capable of 16 QAM modulation in order to have a data rate of 20Mbps at the frequency of the ISM band (433 ~ 435 MHz) and supply voltage is 1V for low power. This system was designed with TSMC Mixed-Signal RF 0.18um process.

Author Biographies

Dae Hyeon kwon, Korea Advanced Institute of Science and Technology

Dae Hyeon Kwon received the B.S. degree in electrical and computer engineering from the university of Seoul, Seoul, South Korea, in 2012, and the M.S degree in electrical and computer engineering from the Gwangju Institute of Science and Technology, Gwangju, South Korea, in 2014. He is currently working toward the Ph.D. degree in electrical engineering from KAIST, Daejeon, South Korea. His main interests are Phase-locked Loops and RF integrated circuit for bio medical and communications

Dong Hyun Youn, Korea Advanced Institute of Science and Technology

Dong Hyun Youn received the B.S. degree in electrical engineering from Hanyang University, Seoul, Korea, in 2019 and the M.S degree in electrical engineering from KAIST, Daejeon, Korea, in 2021. He is currently working toward the Ph.D. degree in electrical engineering from KAIST, Daejeon, Korea. His interest is Analog/RF integrated circuits for power-efficient biomedical and IoT Sensor nodes.

Min Kyu Je, Korea Advanced Institute of Science and Technology

Min Kyu Je (S’97-M’03–SM’12) received the M.S. and Ph.D. degrees, both in electrical engineering and computer science, from Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 1998 and 2003, respectively. In 2003, he joined Samsung Electronics, Giheung, South Korea, as a Senior Engineer and worked

on multi-mode multi-band RF transceiver SoCs for GSM / GPRS / EDGE / WCDMA standards. From 2006 to 2013, he was with Institute of Microelectronics (IME), Agency for Science, Technology and Research (A∗STAR), Singapore. He was a Senior Research Engineer from 2006 to 2007, a Member of Technical Staff from 2008 to 2011, a Senior Scientist in 2012, and a Deputy Director in 2013. From 2011 to 2013, he led the Integrated Circuits and Systems Laboratory at IME as a Department Head. In IME, he led

various projects developing low-power 3-D accelerometer ASICs for high-end medical motion sensing applications, readout ASICs for nanowire biosensor arrays detecting DNA/RNA and protein biomarkers for point-of-care diagnostics, ultra-low-power sensor node SoCs for continuous real-time wireless health monitoring, and wireless implantable sensor ASICs for medical devices, as

well as low-power radio SoCs and MEMS interface/control SoCs for consumer electronics and industrial applications. He was also a Program Director of Neurodevices Program under A∗STAR Science and Engineering Research Council

from 2011 to 2013, and an Adjunct Assistant Professor with the Department of Electrical and Computer Engineering, National University of Singapore, from 2010 to 2013. He was an Associate Professor with the Department of Information and Communication Engineering, Daegu Gyenogbuk Institute of Science and Technology, South Korea from 2014 to 2015. Since 2016, he has been an

Associate Professor with the School of Electrical Engineering, KAIST, South Korea. His main research areas are advanced IC platform development including smart sensor interface ICs and ultra-low-power wireless communication ICs, as well as microsystem integration leveraging the advanced IC platform for emerging applications such as intelligent miniature biomedical devices, ubiquitous wireless sensor nodes, and future mobile devices. He is an author of five book chapters, and has more than 260 peer-reviewed international conference and journal publications in the areas of sensor interface IC, wireless IC, biomedical microsystem, 3-D IC, device modeling, and nanoelectronics. He also has more than 40 patents issued or filed. He has served on the Technical Program Committee and Organizing Committee for various international conferences, symposiums, and workshops, including IEEE International Solid-State Circuits Conference, IEEE Asian Solid-State Circuits Conference, and IEEE Symposium on VLSI Circuits

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

Design of a Low power Transmitter for Biomedical application in 180nm CMOS

Abstract

Author Biographies

Most read articles by the same author(s)