In this paper, an FSS-based wideband band-pass filter operating within 1-4 GHz range is presented. The proposed filter consists of two Frequency Selective Surface (FSS) layers separated by a 0.5 mm thick dielectric substrate. The design procedure of the FSS unit-cell is firstly investigated, providing guidelines to control the transmission bandwidth. The top FSS layer comprises a vertical I-shaped unit-cell, while the bottom one includes a horizontal I-shaped unit cell. Finally, full-wave simulations were performed, and the results show that the proposed filter achieves a -3 dB transmission band from 1.1 to 3.6 GHz (a fractional bandwidth of 107%) and a -1 dB transmission band from 1.3 to 3.5 GHz (a fractional bandwidth of 91%). Furthermore, the presented structure exhibits stable performance against oblique incidence up to 40°.
Design of a Frequency Selective Surface Band-Pass Filter Covering Multi-octave L-S Bands
Pascarella, Francesca;Brizi, Danilo;Monorchio, Agostino
2024-01-01
Abstract
In this paper, an FSS-based wideband band-pass filter operating within 1-4 GHz range is presented. The proposed filter consists of two Frequency Selective Surface (FSS) layers separated by a 0.5 mm thick dielectric substrate. The design procedure of the FSS unit-cell is firstly investigated, providing guidelines to control the transmission bandwidth. The top FSS layer comprises a vertical I-shaped unit-cell, while the bottom one includes a horizontal I-shaped unit cell. Finally, full-wave simulations were performed, and the results show that the proposed filter achieves a -3 dB transmission band from 1.1 to 3.6 GHz (a fractional bandwidth of 107%) and a -1 dB transmission band from 1.3 to 3.5 GHz (a fractional bandwidth of 91%). Furthermore, the presented structure exhibits stable performance against oblique incidence up to 40°.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
