3 citations · 4 across the 2 of their papers we have counts for
5 papers
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…
Reconfigurable Intelligent Surfaces: Architectures, Models, and Applications
Mojtaba Fallahzadeh, Mohammad Hossein Koohi Ghamsari, Alireza Mallahzadeh +3
Reconfigurable Intelligent Surfaces (RIS), also known as programmable metasurfaces, have emerged as a promising technology for next-generation wireless communication systems by ena…
Circuit-Based Dispersion Analysis of Periodic Cross-Shaped Unit Cells with Dirac Characteristics
Mahyar Mehri Pashaki, Mohammad Hossein Koohi Ghamsari, Mohammad Memarian
In this paper, the dispersion behavior of periodic cross-shaped unit cells is investigated with emphasis on Dirac-type dispersion using an equivalent circuit modeling approach. Two…
A Corrugated All-Metal Vivaldi Antenna for 5G Phased Array Applications
Mahyar Mehri Pashaki, Mohammad Hossein Koohi Ghamsari, Alireza Mallahzadeh +2
In this paper, a corrugated Vivaldi phased array antenna in the 28 GHz frequency band is proposed for 5G communication applications. The presented configuration features an all-met…
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…