Hedgehog Shell: Multibeam DRA with 2-D Beamsteering for mm-Wave Applications
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Author
Amir Mohsen Ahmadi Najafabadi; Germán A. Ramírez; Mohsen Ghorbanpoor; Alexander Vorobyov; Pascal Nussbaum; Anja Skrivervik
DOI
10.23919/EuCAP63536.2025.10999475
Abstract
This paper investigates a low-cost method to form a
multibeam antenna with 2-D beamsteering capability. The simple
feeding method employed in this solution enables the dielectric
rod antennas to generate multiple beams in the intended direction
simultaneously. In this manner, a multi-fixed-beam system is
created without the need for a beamforming unit, which reduces
the complexity of the final system architecture. Furthermore, a
sensitivity analysis of the dielectric rod is performed, taking into
account variations in critical design parameters and the per-
mittivity of the rod. Different fabrication methods and low-loss
materials that can be used for rod manufacturing are introduced,
and the permittivity of these materials is characterized using the
Nicolson-Ross-Weir (NRW) method. By doing so, our study not
only presents a practical multibeam antenna formulation strat-
egy but also reports appropriate materials and manufacturing
processes that can be employed in the manufacturing of rod
antennas.
Publication Reference
2025 19th European Conference on Antennas and Propagation (EuCAP)
Year
2025-03-30