TY - GEN
T1 - A Teflon-Filled Open-Ended Circular Waveguide Focal-Plane-Array Used for Sway Compensation in W-band 50dB-Gain Backhaul Reflector Antennas
AU - Chernikov, Viktor
AU - Vilenskiy, Artem
AU - Agneessens, Sam
AU - Manholm, Lars
AU - Kehn, Malcolm Ng Mou
AU - Ivashina, Marianna
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - The paper introduces a novel focal plane array (FPA) design aimed at enhancing the reliability of millimeter-wave backhaul communication links by compensating for the impact of antenna mounting structures' sways. This FPA is analyzed for an offset parabolic reflector antenna with the 40-cm aperture diameter at W-band frequencies (92-96 GHz). The FPA-fed reflector antenna generates multiple closely-overlapping beams to compensate for the expected antenna tilt range, equivalent to seven beamwidths. This study addresses major challenges associated with FPA design implementation at these high frequencies, including (i) the need for a small (≤ 0.75 λ) inter-element spacing for the required beam overlap, and (ii) manufacturing complexities of an array element ensuring optimal reflector illumination and impedance matching in the presence of mutual coupling effects. An analytical approach to the FPA pattern shaping for optimal reflector illumination is proposed and successfully validated via numerical optimization and measurements. Furthermore, our analysis of the total reflector-FPA system shows promising results, i.e. 56 - 68% antenna aperture efficiency (49 - 50 dBi directivity) for all beams with compliance to the radiation emission constraints (ETSI class 3) within ±89°.
AB - The paper introduces a novel focal plane array (FPA) design aimed at enhancing the reliability of millimeter-wave backhaul communication links by compensating for the impact of antenna mounting structures' sways. This FPA is analyzed for an offset parabolic reflector antenna with the 40-cm aperture diameter at W-band frequencies (92-96 GHz). The FPA-fed reflector antenna generates multiple closely-overlapping beams to compensate for the expected antenna tilt range, equivalent to seven beamwidths. This study addresses major challenges associated with FPA design implementation at these high frequencies, including (i) the need for a small (≤ 0.75 λ) inter-element spacing for the required beam overlap, and (ii) manufacturing complexities of an array element ensuring optimal reflector illumination and impedance matching in the presence of mutual coupling effects. An analytical approach to the FPA pattern shaping for optimal reflector illumination is proposed and successfully validated via numerical optimization and measurements. Furthermore, our analysis of the total reflector-FPA system shows promising results, i.e. 56 - 68% antenna aperture efficiency (49 - 50 dBi directivity) for all beams with compliance to the radiation emission constraints (ETSI class 3) within ±89°.
KW - 5G/6G antennas
KW - Foca1 plane array
KW - backhaul communication links
KW - reflector antenna
KW - waveguide
UR - http://www.scopus.com/inward/record.url?scp=85178224591&partnerID=8YFLogxK
U2 - 10.1109/ICEAA57318.2023.10297687
DO - 10.1109/ICEAA57318.2023.10297687
M3 - Conference contribution
AN - SCOPUS:85178224591
T3 - 2023 International Conference on Electromagnetics in Advanced Applications, ICEAA 2023
SP - 340
EP - 345
BT - 2023 International Conference on Electromagnetics in Advanced Applications, ICEAA 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 25th International Conference on Electromagnetics in Advanced Applications, ICEAA 2023
Y2 - 9 October 2023 through 13 October 2023
ER -