TY - JOUR
T1 - Low-Profile Wideband High-Gain Reconfigurable Antenna with Quad-Polarization Diversity
AU - Tran, Huy Hung
AU - Nguyen-Trong, Nghia
AU - Le, Tuan Tu
AU - Abbosh, Amin M.
AU - Park, Hyun Chang
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2018/7
Y1 - 2018/7
N2 - A low-profile, wideband, high-gain reconfigurable antenna, which is capable of switching among four linear polarizations (LPs) at every 45° rotation, namely, 0°, 45°, 90°, and 135° LP, is presented. The proposed structure is based on two half-ellipse-shaped dipoles arranged perpendicularly and is center fed by coaxial cable. The antenna polarization can be switched by selecting the appropriate dipole arms to be excited as well as controlling their phases using p-i-n diodes. To achieve low-profile, high-gain, and unidirectional radiation patterns in a wide range of frequency, a combination of an artificial magnetic conductor and a shallow pyramid-shaped cavity is also utilized in this design. An optimized prototype with low profile of 0.1 λ at the lowest operating frequency yields a measured overlapped impedance bandwidth (BW) of 53.9% for all polarization states. In addition, a radiation efficiency of greater than 78% and measured broadside gain from 6.8 to 10.9 dBi are observed over the entire operation BW.
AB - A low-profile, wideband, high-gain reconfigurable antenna, which is capable of switching among four linear polarizations (LPs) at every 45° rotation, namely, 0°, 45°, 90°, and 135° LP, is presented. The proposed structure is based on two half-ellipse-shaped dipoles arranged perpendicularly and is center fed by coaxial cable. The antenna polarization can be switched by selecting the appropriate dipole arms to be excited as well as controlling their phases using p-i-n diodes. To achieve low-profile, high-gain, and unidirectional radiation patterns in a wide range of frequency, a combination of an artificial magnetic conductor and a shallow pyramid-shaped cavity is also utilized in this design. An optimized prototype with low profile of 0.1 λ at the lowest operating frequency yields a measured overlapped impedance bandwidth (BW) of 53.9% for all polarization states. In addition, a radiation efficiency of greater than 78% and measured broadside gain from 6.8 to 10.9 dBi are observed over the entire operation BW.
KW - Artificial magnetic conductor (AMC)
KW - dipole
KW - high gain
KW - linear polarization (LP)
KW - low profile
KW - p-i-n diode
KW - polarization reconfigurable
KW - wideband
UR - http://www.scopus.com/inward/record.url?scp=85045670749&partnerID=8YFLogxK
U2 - 10.1109/TAP.2018.2826657
DO - 10.1109/TAP.2018.2826657
M3 - Article
AN - SCOPUS:85045670749
SN - 0018-926X
VL - 66
SP - 3741
EP - 3746
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 7
ER -