Publication

This paper introduces a backscattered BLE5 transmitter for low-cost single-antenna green systems solely powered by mm-scale harvesters. Peak power reduction to 10.6 μW is achieved while enabling BLE-compliant spectral mask up to the maximum allowed backscattered power for range extension. Peak power is reduced via an approximate GFSK modulator architecture based on a non-uniform self-sampling digitally controlled oscillator (DCO) with period pruning/clustering, in place of a power-hungry Gaussian filter and PLL used in conventional GFSK modulators. A 180-nm testchip shows 97-m range with commodity receiver at 4X power and 3X range improvement with respect to prior art.

Researcher/Author:  

Karim Ali Ahmed, Ruiyuan Yang, Praveenakumar Salamani, Viveka Rajanna & Massimo Alioto

Published in:

 ESSCIRC 2023- IEEE 49th European Solid State Circuits Conference (ESSCIRC)

Date Added to IEEE Xplore: 06 October 2023

To download the paper, please proceed to:  

 10.1109/ESSCIRC59616.2023.10268708