Paper Info
Title
A 24-GHz Front-End Integrated on a Multilayer Cellulose-Based Substrate for Doppler Radar Sensors.
Abstract
This paper presents a miniaturized Doppler radar that can be used as a motion sensor for low-cost Internet of things (IoT) applications. For the first time, a radar front-end and its antenna are integrated on a multilayer cellulose-based substrate, built-up by alternating paper, glue and metal layers. The circuit exploits a distributed microstrip structure that is realized using a copper adhesive laminate, so as to obtain a low-loss conductor. The radar operates at 24 GHz and transmits 5 mW of power. The antenna has a gain of 7.4 dBi and features a half power beam-width of 48 degrees. The sensor, that is just the size of a stamp, is able to detect the movement of a walking person up to 10 m in distance, while a minimum speed of 50 mm/s up to 3 m is clearly measured. Beyond this specific result, the present paper demonstrates that the attractive features of cellulose, including ultra-low cost and eco-friendliness (i.e., recyclability and biodegradability), can even be exploited for the realization of future high-frequency hardware. This opens opens the door to the implementation on cellulose of devices and systems which make up the "sensing layer" at the base of the IoT ecosystem.
Year
DOI
Venue
2017
10.3390/s17092090
SENSORS
Keywords
Field
DocType
Doppler radar sensors,green electronics,all-natural electronic,circuits on cellulose,paper-based substrates,flexible substrates,substrate integrated circuits,Internet of things (IoT)
Radar,Front and back ends,Substrate (chemistry),Doppler radar,Internet of Things,Electronic engineering,Cellulose,Engineering,Electrical engineering,Conductor,Microstrip
Journal
Volume
Issue
ISSN
17
9.0
1424-8220
Citations 
PageRank 
References 
1
0.37
4
Authors
8
Name
Order
Citations
PageRank
Federico Alimenti14411.65
Valentina Palazzi232.35
Chiara Mariotti310.37
marco virili4102.26
g orecchini571.07
Stefania Bonafoni65215.19
Roselli, L.7134.05
Mezzanotte, P.854.54