TY - JOUR
T1 - Reconfigurable, Wideband, Low-Profile, Circularly Polarized Antenna and Array Enabled by an Artificial Magnetic Conductor Ground
AU - Lin, Wei
AU - Chen, Shu Lin
AU - Ziolkowski, Richard W.
AU - Guo, Y. Jay
N1 - Funding Information:
Manuscript received October 8, 2017; revised December 28, 2017; accepted January 1, 2018. Date of publication January 8, 2018; date of current version March 1, 2018. This work was supported by the Australian Research Council under Grant DP160102219. (Corresponding author: Shu-Lin Chen.) W. Lin, S.-L. Chen, and Y. J. Guo are with the Global Big Data Technologies Center, University of Technology Sydney, Ultimo NSW 2007, Australia (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 1963-2012 IEEE.
PY - 2018/3
Y1 - 2018/3
N2 - A reconfigurable, wideband, and low-profile circular polarization (CP) antenna is presented. Its wideband CP reconfigurability is realized by incorporating RF switches into a cross-bowtie radiator. A compact, wide bandwidth, and polarization-independent artificial magnetic conductor ground plane is developed to minimize the overall profile of the antenna while maintaining its wide bandwidth. The simplicity of this single-element design facilitates the realization of a reconfigurable, wide bandwidth CP array that achieves higher directivity without changing its overall profile. Prototypes of the single element and of a 1 × 4 array of these elements were fabricated and tested. The measured results for both prototypes are in good agreement with their simulated values, validating their design principles. They are low profile with a height ∼ 0.05 λ0. The array exhibits a wide fractional operational bandwidth: 1.65 GHz (21.7%), and a high realized gain: 13 dBic. Since they would enhance their channel capacity and avoid polarization mismatch issues, these reconfigurable CP antenna systems are very suitable for modern wireless systems.
AB - A reconfigurable, wideband, and low-profile circular polarization (CP) antenna is presented. Its wideband CP reconfigurability is realized by incorporating RF switches into a cross-bowtie radiator. A compact, wide bandwidth, and polarization-independent artificial magnetic conductor ground plane is developed to minimize the overall profile of the antenna while maintaining its wide bandwidth. The simplicity of this single-element design facilitates the realization of a reconfigurable, wide bandwidth CP array that achieves higher directivity without changing its overall profile. Prototypes of the single element and of a 1 × 4 array of these elements were fabricated and tested. The measured results for both prototypes are in good agreement with their simulated values, validating their design principles. They are low profile with a height ∼ 0.05 λ0. The array exhibits a wide fractional operational bandwidth: 1.65 GHz (21.7%), and a high realized gain: 13 dBic. Since they would enhance their channel capacity and avoid polarization mismatch issues, these reconfigurable CP antenna systems are very suitable for modern wireless systems.
KW - Artificial magnetic conductor (AMC)
KW - circular polarization (CP)
KW - crossed dipoles
KW - p-i-n diodes
KW - reconfigurable antennas
KW - wide bandwidth
UR - http://www.scopus.com/inward/record.url?scp=85041241328&partnerID=8YFLogxK
U2 - 10.1109/TAP.2018.2790437
DO - 10.1109/TAP.2018.2790437
M3 - Journal article
AN - SCOPUS:85041241328
SN - 0018-926X
VL - 66
SP - 1564
EP - 1569
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 3
M1 - 8248753
ER -