TY - GEN
T1 - Low-profile metamaterial antenna with near-arbitrary tunable polarization
AU - Scarborough, Clinton P.
AU - Werner, Douglas H.
AU - Wolfe, Douglas E.
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/9/18
Y1 - 2014/9/18
N2 - Antennas operating in the low UHF band have conventionally required thicknesses in the tens of centimeters. Artificial magnetic conducting (AMC) substrates have been shown to reduce the profile (height) of these antennas, but at the expense of operating bandwidth. Adding tunability has restored the flexibility of dynamically adjusting the communication channel over a wide range. Here we introduce a low-profile antenna system with additional tunability that produces a reconfigurable polarization for a 1-2% operating channel adjustable across a wide overall bandwidth, all from a single feed without phase shifters. The polarization is controlled by adjusting the input admittances of crossed end-loaded dipoles; a 90° difference in the phase of the input admittances leads to circularly polarized radiation. Varying the tuning parameters can also lead to either right-handed or left-handed circular or elliptical polarizations, as well as linear polarizations with various orientations.
AB - Antennas operating in the low UHF band have conventionally required thicknesses in the tens of centimeters. Artificial magnetic conducting (AMC) substrates have been shown to reduce the profile (height) of these antennas, but at the expense of operating bandwidth. Adding tunability has restored the flexibility of dynamically adjusting the communication channel over a wide range. Here we introduce a low-profile antenna system with additional tunability that produces a reconfigurable polarization for a 1-2% operating channel adjustable across a wide overall bandwidth, all from a single feed without phase shifters. The polarization is controlled by adjusting the input admittances of crossed end-loaded dipoles; a 90° difference in the phase of the input admittances leads to circularly polarized radiation. Varying the tuning parameters can also lead to either right-handed or left-handed circular or elliptical polarizations, as well as linear polarizations with various orientations.
UR - https://www.scopus.com/pages/publications/84907870285
UR - https://www.scopus.com/pages/publications/84907870285#tab=citedBy
U2 - 10.1109/APS.2014.6905051
DO - 10.1109/APS.2014.6905051
M3 - Conference contribution
AN - SCOPUS:84907870285
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 1451
EP - 1452
BT - 2014 IEEE Antennas and Propagation Society International Symposium(APSURSI)
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014
Y2 - 6 July 2014 through 11 July 2014
ER -