Abstract

Spiral antennas have been extensively studied over the past decades due to their wide operational bandwidth and stable radiation characteristics. In this work, a broadband spiral antenna is designed and analyzed using a full‑wave electromagnetic approach in CST Studio Suite. A full wave design and optimization process is adopted to meet electrical and manufacturing constraints, while impedance bandwidth, radiation pattern stability, and efficiency are evaluated through numerical analyses. A comparison between equiangular and Archimedean spiral geometries is presented, highlighting the impact of geometric parameters and material losses on the antenna's radiating efficiency. The results show that an accurate optimization is required to achieve a design that satisfies the performance requirements while remaining compatible with additive manufacturing techniques.
Starting from the optimized single-element antenna, a dual-antenna configuration is developed and integrated onto a representative platform. The effects of the installation environment are analyzed by evaluating the achievable field of view and the resulting deformation of the radiation pattern. The obtained results demonstrate the feasibility of the proposed design approach for the realization and integration of broadband spiral antennas in platform-mounted configurations.

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Speaker

Chiara Tulli, born in Rome, Italy, received a B.Sc. degree in Electronic Engineering from Roma Tre University, Rome, Italy, in 2021, and an M.Sc. degree summa cum laude in Telecommunications Engineering, with specialization in Microwave and RF, from the same university in 2024.
In 2022, Chiara was a visiting student at Télécom SudParis in Paris, France, through the Erasmus+ program, where she completed coursework and internship activities in telecommunications engineering. Her bachelor's thesis focused on analyzing a microwave cavity for biological applications, while her master's work addressed full-wave electromagnetic analysis and machine-learning-based techniques for the design and optimization of metamaterial-loaded microstrip antennas.
In 2024, Chiara participated in the Concurrent Engineering Challenge held at ESEC, Galaxia (ESA site) in Belgium, contributing to the design of telecommunications systems and data link architectures.
Since 2024, Chiara has been an Antenna Engineer with Elettronica S.p.A. (ELT Group), Rome, Italy. Her current research interests include UWB antennas, antenna arrays, microwave components, beamforming networks, antenna measurements, and advanced solutions for antenna systems.

@CT
Antenna Engineer — ELT Group — Elettronica