A digitally tuned reconfigurable patch antenna for IoT devices

F. A. Asadallah, J. Costantine, Y. Tawk, L. Lizzi, F. Ferrero, C. G. Christodoulou
July 2017
DOI

Abstract

In this paper, a reconfigurable patch antenna design operating at 868MHz for Low Power Wide Area Network (LoRa), 1.58 GHz for Global Positioning System (GPS) and 2.4 GHz for Bluetooth is presented. The design is reconfigurable thanks to the integration of a digitally tunable capacitor (DTC). The DTC capacitance changes according to a 5 bits' sequence command. A microcontroller is used to assign the required sequence, and thus leading to frequency reconfiguration. The antenna is a circular patch with a gain that varies from 0.2 dB to 6 dB based on the desired frequency of operation and the reconfiguration state. The antenna is designed for internet of things (IoT) applications.

Type
Conference paper
Publication
2017 IEEE International Symposium on Antennas and Propagation USNC/URSI National Radio Science Meeting
"Dipole antennas" "UHF antennas" "Antenna radiation patterns" "microstrip antennas" "planar antenna" "Capacitance" "capacitors" "digitally tunable capacitor" "reconfigurable antenna" "Global Positioning System" "Patch antennas" "GPS" "IoT devices" "LoRa" "Bluetooth" "circular patch" "digital tunable capacitor (DTC)" "digitally tuned reconfigurable patch antenna" "DTC capacitance" "frequency 1.58 GHz" "frequency 2.4 GHz" "frequency 868.0 MHz" "frequency reconfiguration" "gain 0.2 dB to 6.0 dB" "internet of things" "Internet-of-Things applications" "IoT patch antenna" "Low Power Wide Area Network" "microcontrollers" "reconfigurable patch antenna design" "reconfiguration state" "word length 5.0 bit"

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