Title :
A Passive Auto-Switching Amphibian Antenna
Author :
O´Keefe, Steven G. ; Perhirin, Steven
Author_Institution :
Centre for Wireless Monitoring & Applic., Griffith Univ., Brisbane, QLD, Australia
Abstract :
An amphibian antenna was constructed that is capable of radiating both above and below the surface of water. The antenna is effectively a dual band PIFA design where each radiating element is tuned to resonate in close proximity of either air or water. A tuning stub was switched into circuit by the use of a passive, water filled, capacitive microstrip switch. The antenna was designed to operate at 433 MHz and good input impedance was observed in both simulation and measurement for both environments.
Keywords :
antenna radiation patterns; microstrip antennas; multifrequency antennas; planar inverted-F antennas; capacitive microstrip switch; dual band PIFA design; frequency 433 MHz; passive auto-switching amphibian antenna; passive microstrip switch; radiating element; tuning stub; water filled microstrip switch; Antenna measurements; Antennas; Impedance; Microstrip; Switches; Switching circuits; Dual band PIFA; microstrip switch; underwater antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2014.2308538
