Research Article

Design of cloaked Yagi-Uda antennas

¹ Engineering Department, “Niccolò Cusano” University, Via Don Carlo Gnocchi 3, 00166 Rome, Italy
² Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712, USA
³ Department of Engineering, “Roma Tre” University, Via Vito Volterra 62, 00146 Rome, Italy

^* e-mail: alessio.monti@unicusano.it

Received: 7 September 2016
Accepted: 24 October 2016
Published online: 23 November 2016

Abstract

Exploiting the appealing features of the mantle cloaking approach, we propose a general procedure that allows designing Yagi-Uda antennas with low scattering profile. The proposed radiators are able to operate efficiently within a given frequency band, while being electromagnetically undetectable in another desired frequency range. The general design procedure of such cloaked antennas is first presented, considering that both antenna and cloak requirements must be simultaneously fulfilled. Then, we prove that a cloaked Yagi-Uda antenna can be installed in close proximity to other radiators without affecting their performance. Due to these unprecedented characteristics, the proposed radiators may have a strong impact in the design of compact overcrowded platforms for both terrestrial and satellite applications.