TY - GEN
T1 - Toward Hyper-Compact Rotman Lenses
T2 - 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022
AU - Kashyap, Bharath G.
AU - Diaz, Rodolfo
AU - Trichopoulos, Georgios C.
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - We present a novel approach for miniaturization of Rotman lenses used for versatile beamforming applications in satellite, radar, and unmanned aerial vehicle systems. Since these systems usually operate at very-/ultra-high frequencies (VHF/UHF), conventional techniques for Rotman lens design become impractical as they lead to bulky solutions ( > 5-6 λ long). To address this challenge, herein, we propose a modified lumped element transmission line (TL) model by introducing a mutual inductance term between the first nearest neighbors. Such a TL called the meta-transmission line can be used to extend the linearity of the dispersion diagram and reduce the overall size of the Rotman lens. A proof-of-concept 1D meta-TL is designed and analyzed to demonstrate the improvement in the linearity of the dispersion diagram by ∼ 36%.
AB - We present a novel approach for miniaturization of Rotman lenses used for versatile beamforming applications in satellite, radar, and unmanned aerial vehicle systems. Since these systems usually operate at very-/ultra-high frequencies (VHF/UHF), conventional techniques for Rotman lens design become impractical as they lead to bulky solutions ( > 5-6 λ long). To address this challenge, herein, we propose a modified lumped element transmission line (TL) model by introducing a mutual inductance term between the first nearest neighbors. Such a TL called the meta-transmission line can be used to extend the linearity of the dispersion diagram and reduce the overall size of the Rotman lens. A proof-of-concept 1D meta-TL is designed and analyzed to demonstrate the improvement in the linearity of the dispersion diagram by ∼ 36%.
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U2 - 10.1109/AP-S/USNC-URSI47032.2022.9886259
DO - 10.1109/AP-S/USNC-URSI47032.2022.9886259
M3 - Conference contribution
AN - SCOPUS:85139788869
T3 - 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings
SP - 37
EP - 38
BT - 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 10 July 2022 through 15 July 2022
ER -