Design of a Unique Band-Pass Frequency Selective Surface for RADAR Application
| Authors | Anindya Ghosh1, Rakhi Neogi1, Tapas Tewary1 , Sunandan Bhunia2 |
| Affiliations |
1Department of ECE, Academy of Technology, West Bengal, India 2Department of ECE, Central Institute of Technology Kokrajhar, Assam, India |
| Е-mail | bhuniasunandan@gmail.com |
| Issue | Volume 18, Year 2026, Number 3 |
| Dates | Received 10 March 2026; revised manuscript received 15 June 2026; published online 26 June 2026 |
| Citation | Anindya Ghosh, Rakhi Neogi, Tapas Tewary, et al., J. Nano- Electron. Phys. 18 No 3, 03018 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(3).03018 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Frequency Selective Surface (FSS), Band pass filter, Split ring resonator (SRR), RADAR (3) . |
| Annotation |
This study introduces the design and full-wave simulation of a band-pass frequency selective surface (BPFSS) optimized for indoor Internet of Things (IoT) networks and radar-based sensing applications. To achieve improved frequency selectivity and higher operational efficiency, the proposed FSS employs a concentric polygonal split-ring resonator encircled by circular patch elements. The unit cell comprises a 24-sided polygonal split-ring resonator surrounded by six circular disks arranged in a regular hexagonal layout. Implemented as a single-layer design without backside metallization, the structure follows standard practices for spatial filtering applications. This configuration enables the single-layer FSS to operate within the 6.75-8 GHz band, delivering strong spatial filtering performance at the resonant frequency of 7.5 GHz. Proposed unique BPFSS unit cell is designed by using a 0.508 mm thick Rogers RO5880 substrate having relative dielectric constant of 2.2 and loss tangent of 0.009 at 10 GHz. The final structure has compact dimensions of 10.8 mm x 10.8 mm x 0.508 mm. Simulations were performed using ANSYS HFSS software, employing unit cell boundary conditions and Floquet ports to emulate infinite periodic behaviour. This work is also supported by approximate calculation of resonant frequency of circular ring resonator. The results confirm the structure’s suitability for band-pass filtering applications with good angular and polarization stability. |
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