Paper Info
Title
Design of a Battery-powered Emitter dedicated to the Characterization of Human Body Communications
Abstract
Human Body Communications (HBC), which has been standardized around 21MHz, potentially offers more favourable propagation conditions than usual wireless technologies such as ZigBee, or Bluetooth. However, due their sensitivity to the close environment, the signal attenuation cannot be accurately determined using lab equipment. For this reason, a battery-powered emitter with emitted power estimation capability is fully described in this paper. The prototype implemented in a 5×5 cm PCB is supplied with a 3.3V battery and has been built around a microcontroller (MCU). The MCU has been programmed to generate a 21MHz square carrier and to under-sample it at 480ksps using the MCU embedded Analog-to-Digital Converter (ADC). To enable the carrier power estimation with this constraint, the Goertzel light discrete Fourier transform algorithm has been implemented using particular parameters values. Finally, to overcome the bandwidth limitations of the ADC MCU pin, an external sample & hold circuit driven by the MCU have been added and optimized.
Year
DOI
Venue
2020
10.1109/DTIS48698.2020.9081289
2020 15th Design & Technology of Integrated Systems in Nanoscale Era (DTIS)
Keywords
DocType
ISBN
Goertzel algorithm,HBC,under-sampling processing,microcontroller-based emitter,power estimation
Conference
978-1-7281-5427-5
Citations 
PageRank 
References 
0
0.34
3
Authors
5
Name
Order
Citations
PageRank
R. Assila Belhadj Mefteh100.34
Vauche, R.2146.47
Nicolas Dehaese3185.99
Jean Gaubert4429.62
Hervé Barthélemy500.34