TY - JOUR
T1 - High-Impedance Surface-Based Null-Steering Antenna for Angle-of-Arrival Estimation
AU - Tamura, Jo
AU - Arai, Hiroyuki
AU - Itoh, Tatsuo
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2022/5/1
Y1 - 2022/5/1
N2 - A null-steering antenna with a high-impedance surface (HIS) to improve angle-of-arrival (AoA) estimation is designed and experimentally demonstrated. Because the HIS helps ensure that individual element patterns in an array are identical, the proposed antenna can perform null scanning with a low fluctuation without controlling the amplitude ratio of antenna elements. The simulation results demonstrate that the proposed antenna scans a null in the H-plane in 120° with greater than -30 dB from 2.4 to 2.6 GHz. Furthermore, both the measured S-parameters and element patterns agree well with the simulated results. Overall, the proposed antenna can successfully scan a null greater than -30 dB in 60° at a sampling frequency of 150 MHz.
AB - A null-steering antenna with a high-impedance surface (HIS) to improve angle-of-arrival (AoA) estimation is designed and experimentally demonstrated. Because the HIS helps ensure that individual element patterns in an array are identical, the proposed antenna can perform null scanning with a low fluctuation without controlling the amplitude ratio of antenna elements. The simulation results demonstrate that the proposed antenna scans a null in the H-plane in 120° with greater than -30 dB from 2.4 to 2.6 GHz. Furthermore, both the measured S-parameters and element patterns agree well with the simulated results. Overall, the proposed antenna can successfully scan a null greater than -30 dB in 60° at a sampling frequency of 150 MHz.
KW - Angle-of-arrival (AoA) estimation
KW - antenna radiation patterns
KW - dipole antenna
KW - high-impedance surface (HIS)
KW - low profile antennas
KW - null-steering antenna (NSA)
UR - http://www.scopus.com/inward/record.url?scp=85122280106&partnerID=8YFLogxK
U2 - 10.1109/TAP.2021.3137469
DO - 10.1109/TAP.2021.3137469
M3 - Article
AN - SCOPUS:85122280106
SN - 0018-926X
VL - 70
SP - 3269
EP - 3276
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 5
ER -