A single-bit sampling demodulator for biomedical implants |
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| Affiliation: | 1. Department of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea;2. Department of Electrical and Electronic Engineering, The University of Melbourne, Victoria 3010, Australia;1. Department of Electrical Engineering, Kunsan National University, Kunsan 573701, Republic of Korea;2. Department of Electrical Engineering, Incheon National University, Incheon 406772, Republic of Korea;3. Measurement and Analysis Division, National Nanofab Center (NNFC), Daejeon 305806, Republic of Korea;1. Institute of Nano- and Biotechnologies (INB), Aachen University of Applied Sciences, Campus Jülich, 52428 Jülich, Germany;2. Peter Grünberg Institute (PGI-8), Research Centre Jülich GmbH, 52425 Jülich, Germany;3. Institute of Pharmaceutical Chemistry, Philipps-University Marburg, MarbacherWeg 6-10, 35032 Marburg, Germany;1. School of Electrical Engineering and Electronic Information, Xihua University, Chengdu 610039, China;2. Sichuan Province Key Laboratory of Signal and Information Processing, Xihua University, Chengdu 610039, China;3. State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China;1. Ph.D. Program of Electrical and Communications Engineering, Feng Chia University, Taichung 40724, Taiwan;2. Department of Electronic Engineering, National United University, Miaoli 36003, Taiwan;3. Department of Electronic Engineering, Feng Chia University, Taichung 40724, Taiwan;4. Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan |
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| Abstract: | A phase-shift keying (PSK) demodulator is demonstrated for the target application of low power and high data rate inductive links. The demodulator based on the single-bit sampling demodulation scheme is capable of operating in binary, quadrature, 8-, and 16-PSK mode. The prototype chip realized in 0.18-µm CMOS process can demodulate up to 1.25 MSymbol/s at 5-MHz carrier frequency. It occupies 240×310 µm2 and consumes 140 µA from 1.2 V. |
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| Keywords: | Biomedical implants Demodulator Inductive link Phase shift keying (PSK) |
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