TY - JOUR
T1 - A Planar SIW-Based mm-Wave Frequency-Scanning Slot Antenna Array with no Scan Blindness at Normal
AU - Klionovski, Kirill
AU - Liao, Hanguang
AU - Bankov, Sergey
AU - Akhter, Zubair
AU - Shamim, Atif
N1 - KAUST Repository Item: Exported on 2022-10-27
Acknowledgements: This work was funded by King Abdullah University of Science and Technology (KAUST) and King Saud University (KSU) Collaborative Research Grant.
PY - 2022/10/25
Y1 - 2022/10/25
N2 - Planar antenna reflectors are the modern design trend of both multibeam and frequency-scanning antenna arrays. The planar implementation of reflectors is typically performed using substrate-integrated waveguide (SIW) technology. A reflector’s profile can be different from the canonical one (parabolic, elliptic, hyperbolic, etc.) because of the effect of spatial dispersion of the reflection coefficient of the SIW-based surface. It should be synthesized considering the magnitude and argument of the field reflected from such a surface to maximize the efficiency of the reflection. In this paper, we present a planar mm-wave slot antenna array with SIW-based horn-reflector feeding. We analytically formulate the optimization of the SIW surface dimensions while accounting for the spatial dispersion of the reflection coefficient. We minimize the dimensions of the planar horn-reflector feeding. Finally, we demonstrate that using a dual-slot radiating element, we can avoid the effects of scan blindness along the normal direction. A prototype has been built and a good agreement has been achieved between the measured results and the predicted results based on calculations. The prototype achieved ±17° beam scanning within 16% of the operational frequency range, with no scan blindness along the normal direction.
AB - Planar antenna reflectors are the modern design trend of both multibeam and frequency-scanning antenna arrays. The planar implementation of reflectors is typically performed using substrate-integrated waveguide (SIW) technology. A reflector’s profile can be different from the canonical one (parabolic, elliptic, hyperbolic, etc.) because of the effect of spatial dispersion of the reflection coefficient of the SIW-based surface. It should be synthesized considering the magnitude and argument of the field reflected from such a surface to maximize the efficiency of the reflection. In this paper, we present a planar mm-wave slot antenna array with SIW-based horn-reflector feeding. We analytically formulate the optimization of the SIW surface dimensions while accounting for the spatial dispersion of the reflection coefficient. We minimize the dimensions of the planar horn-reflector feeding. Finally, we demonstrate that using a dual-slot radiating element, we can avoid the effects of scan blindness along the normal direction. A prototype has been built and a good agreement has been achieved between the measured results and the predicted results based on calculations. The prototype achieved ±17° beam scanning within 16% of the operational frequency range, with no scan blindness along the normal direction.
UR - http://hdl.handle.net/10754/685214
UR - https://ieeexplore.ieee.org/document/9929287/
U2 - 10.1109/TAP.2022.3215856
DO - 10.1109/TAP.2022.3215856
M3 - Article
SN - 1558-2221
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
ER -