High-Resolution and Broadband Aperiodic Time-Modulated Arrays for Multi-Beam Applications
Year: 2026
Type: article
Abstract: This work introduces a probabilistic approach for aperiodic time-modulated arrays tailored to simultaneous multi-beam applications. Specifically, they include on-off RF switches that contribute to amplitude tapering, as in“classic”time-modulated arrays, while the spacing is aperiodic, so it is possible to obtain large distances between the elements, in terms of wavelength, without the appearance of grating lobes. The significant spacing allows also a reduction of the deleterious impact of mutual coupling. The proposed aperiodic time-modulated arrays are broadband in the sense that the carrier frequency can potentially span a wide bandwidth without the appearance of grating lobes, independently on the element placement, and they are high-resolution in the sense that the array aperture can be made“electrically”very large regardless the number of elements. The array factor can be controlled simultaneously and independently via switching timing and element positioning. In addition, the proposed arrays are reconfigurable in the sense that a change in the duty cycles of the switches can relatively easily change the shape of the radiation pattern. Furthermore, the presented mathematical modeling allows for obtaining simultaneous beams.
Source: IEEE Journal of Microwaves
Authors: Sandra Costanzo, Giovanni Buonanno
Institution: University of Calabria
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,075
Funder: European Commission
OpenAlex ID: W7128784548