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A small-footprint Body Channal Communication transceiver using only one Phase-Locked Loop as modulator and demodulator | IEEE Conference Publication | IEEE Xplore

A small-footprint Body Channal Communication transceiver using only one Phase-Locked Loop as modulator and demodulator


Abstract:

Wearable devices require very tiny size, and this demands chip area as small as possible. In this paper we propose an ultra-compact transceiver for Body Channel Communica...Show More

Abstract:

Wearable devices require very tiny size, and this demands chip area as small as possible. In this paper we propose an ultra-compact transceiver for Body Channel Communication (BCC). The main block of the transceiver is only one phase-locked loop (PLL) circuit which achieves both Frequency-Shift Key (FSK) modulation and demodulation of the system. This ultra-compact structure thus largely simplifies the transceiver circuit, and saves most of the core area. In addition, to improve the frequency accuracy of the FSK transmission, an adaptive frequency calibration (AFC) circuit is proposed, working together with fully-differential small footprint ring-based voltage controlled oscillator (VCO). The proposed PLL-reused transceiver works well at a data rate of 200 kbps, and occupies a core area of only 0.273 mm2 in 0.13um CMOS process, which is even smaller than some 65nm CMOS transceiver circuits.
Date of Conference: 26-29 June 2016
Date Added to IEEE Xplore: 24 October 2016
ISBN Information:
Conference Location: Vancouver, BC

I. Introduction

BCC (Body Channel Communication) which uses human body as signal transmission medium for connecting electronic devices on, inside or near the body is getting more attention. The BCC is very energy-efficient due to its lower working frequency band and higher conductivity of the human body compared with that of air.

References

References is not available for this document.