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physics.optics2026
Millimeter-Wave Gaussian-to-Flat-Top Beam Shaping Using a Single-Curvature Lens: A Novel Approach
Ehsan Imanbeygi, Mohammad Hossein Koohi Ghamsari, Mehdi Ahmadi-Boroujeni
This paper presents a novel method for converting the divergent Gaussian intensity distribution of a millimeter-wave source into a uniform (flat-top) distribution using a single cu…
physics.optics2025★ 1 cited
Confocal Ellipsoidal Reflectors with Phased Array Vivaldi Antenna Source for Imaging Systems
Mohammad Hossein Koohi Ghamsari, Mahyar Mehri Pashaki, Mehdi Ahmadi-Boroujeni
In this paper, an on-axis dual-reflector confocal ellipsoidal structure is presented for near-field imaging systems. In the proposed structure, the backscattered electromagnetic wa…