Frequency Compensated Crystal-Free 802.15.4 Wireless Radio


Crystal-Free radios are susceptible to frequency drifts due to temperature and voltage. Compensation for the frequency drift in the 2.4 GHz local oscillator due to voltage variation was demonstrated for a Crystal-Free radio while powered from a solar cell under 200 mW/cm2 of irradiation and a 0805 capacitor. Without compensation the local oscillator frequency would vary by 2.4 MHz while the 802.15.4 packets were transmitted resulting in a loss of 100B of the payload. With frequency drift compensation that oscillator frequency varied less than 300KHz and the full length 125B 802.15.4 packet was received by an off-the-self component radio.

Keywords: Crystal-Free Radio, Frequency Compensation, Local Oscillator, Voltage Variation

Publication date: 
November 30, 2022
Publication type: 
Conference Paper (Proceedings)
A. Moreno and K. Pister, "Frequency Compensated Crystal-Free 802.15.4 Wireless Radio," 2022 IEEE Sensors, Dallas, TX, USA, 2022, pp. 1-3, doi: 10.1109/SENSORS52175.2022.9967165.

*Only registered BSAC Industrial Members may view project materials & publications. Click here to request member-only access.