Paper Info
Title
Analysis and Design of Low Phase Noise LC Oscillator for Sub-mW PLL-Free Biomedical Receivers
Abstract
This work presents the design of a low phase noise LC oscillator (LCO) for a phase locked loop (PLL)-free receiver (RX), which is used for wireless sensor nodes based healthcare applications. A detailed analysis of phase noise of free running LCO has been presented under the influence of off-chip components, which are very often inevitable in biomedical radios. Based on the analysis, a low power cross coupled LCO has been optimally designed for Medical Device Radiocommunication (MedRadio) band, which is a recommended communication band for biomedical applications. The proposed LCO has been fabricated in 180 nm CMOS technology. Measurement results show that the LCO consumes 140 micr-watt power from 1.8 V supply and exhibits a phase noise of -103 dBc/Hz at an offset of 300 kHz, which closely matches with the post layout simulation results. Measurement results also show that the proposed LCO results in significant power reduction in the PLL-free RX while achieving less than 10^-4 BER at a data rate of 200 kb/s, which is good enough for various biosignal communication.
Year
DOI
Venue
2019
10.1109/VLSID.2019.00040
2019 32nd International Conference on VLSI Design and 2019 18th International Conference on Embedded Systems (VLSID)
Keywords
Field
DocType
Phase noise,LCO,Bio-medical,Receivers,400 MHz,PLL-less
Phase-locked loop,Electronic oscillator,Computer science,Phase noise,Electronic engineering
Conference
ISSN
ISBN
Citations 
1063-9667
978-1-7281-0410-2
0
PageRank 
References 
Authors
0.34
7
2
Name
Order
Citations
PageRank
Abhishek Srivastava18822.03
Maryam Shojaei Baghini28629.67