Angularly Stable Frequency Selective Surface Combined with a Wide-Scan Phased Array

Yepes Julia, C.; Cavallo, D.; Gandini, E.; Monni, Stefania; Neto, A.; van Vliet, Frank E.

doi:10.1109/TAP.2017.2778768

Angularly Stable Frequency Selective Surface Combined with a Wide-Scan Phased Array

Title

Angularly Stable Frequency Selective Surface Combined with a Wide-Scan Phased Array

Author

Yepes Julia, C. (TU Delft Tera-Hertz Sensing)
Cavallo, D. (TU Delft Tera-Hertz Sensing)
Gandini, E. (TNO)
Monni, Stefania (TNO)
Neto, A. (TU Delft Tera-Hertz Sensing)
van Vliet, Frank E. (TNO; University of Twente)

Date

2018

Abstract

A five-layer frequency selective surface (FSS) composed of subwavelength elements with large harmonic rejection bandwidth is presented. The FSS design is based on an equivalent circuit model, where the interlayer interaction is only described with a single transmission line representing the fundamental Floquet wave. A prototype of the designed FSS is fabricated, and the measured response exhibits good stability over a wide conical incidence range up to 45°. The FSS is combined with a wide-scanning connected array of dipoles to implement a phased array with integrated filtering properties. A dispersion analysis is performed to define the distance between the array and the FSS that avoids the propagation of surface waves between the combined structures, allowing to maximize the radiation efficiency. The performance of the array combined with the FSS is experimentally characterized, showing high-order harmonic rejection better than 17 dB over a large bandwidth.

Subject

Frequency selective surface (FSS)
phased array antennas
spatial filters

To reference this document use:

http://resolver.tudelft.nl/uuid:8ea33ac2-4ab8-40d8-be3a-f43d47ef62d6

DOI

https://doi.org/10.1109/TAP.2017.2778768

ISSN

0018-926X

Source

IEEE Transactions on Antennas and Propagation, 66 (2), 1046-1051

Bibliographical note

Accepted Author Manuscript