Dynamically Reconfigurable UWB Antenna Using an FET Switch Powered by Wireless RF Harvested Energy

In this article, a dynamically reconfigurable dual-layer ultra-wideband (UWB) antenna integrated with an energy harvesting (EH) system for powering a GaAs FET switch is presented. The UWB antenna dynamically creates a notch band in the presence of an interfering signal at 5.6 GHz and it goes back to...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2020-08, Vol.68 (8), p.5872-5881
Main Authors: Quddious, Abdul, Abbasi, Muhammad Ali Babar, Antoniades, Marco A., Vryonides, Photos, Fusco, Vincent, Nikolaou, Symeon
Format: Article
Language:English
Subjects:
Actuation
Antennas
Converters
Electric potential
Energy harvesting
Field effect transistors
Gallium arsenide
Notch-band ultra-wideband (UWB) antenna
Radio frequency
reconfigurable
Reconfiguration
rectifier
Rectifiers
Switches
Ultra wideband antennas
Ultrawideband
Voltage
Voltage converters (DC to DC)
wireless power transmission (WPT)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this article, a dynamically reconfigurable dual-layer ultra-wideband (UWB) antenna integrated with an energy harvesting (EH) system for powering a GaAs FET switch is presented. The UWB antenna dynamically creates a notch band in the presence of an interfering signal at 5.6 GHz and it goes back to normal UWB operation when the interferer is removed. For the switching operation, the FET switch is powered using only harvested energy carried by the interfering signals. The UWB antenna on the front layer is a microstrip-fed monopole with an embedded elliptical slot. A quarter wavelength linear stub acts as a resonator inside the slot, which is connected and disconnected using the low-power FET switch. The UWB antenna shares the RF ground with a very compact EH system that consists of a planar inverted-F antenna, a very compact voltage-doubler rectifier, and a passive direct-current (dc)-to-dc boost converter. The boost converter elevates the rectified voltage to above the 3.3 V threshold, which is the minimum voltage needed for the actuation of the FET switch. The dynamic notch-band reconfiguration of the UWB antenna without the need for an external dc power source is made possible when the collected power at the input of the rectifier is higher than −12 dBm.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2020.2988941