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A compact, stable, and angular independent dual‐band frequency‐selective surface for WiFi applications
Author(s) -
Ali Haider,
Shafique Muhammad Farhan,
Riaz Laeeq,
Khan Mahmood Ashraf
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31378
Subject(s) - multi band device , tunable metamaterials , bandwidth (computing) , radio spectrum , frequency band , polarization (electrochemistry) , parametric statistics , topology (electrical circuits) , compact space , selective surface , electronic engineering , optics , materials science , physics , optoelectronics , engineering , electrical engineering , metamaterial , telecommunications , mathematics , chemistry , antenna (radio) , statistics , pure mathematics
This research work reports on a compact dual‐band bandstop frequency‐selective surface design that is capable of suppressing signals in both 2.4 and 5 GHz bands. The structure is composed of closed loop topology with the unit element size of 0.084 λ 0  × 0.084 λ 0 . In addition to compactness, the proposed structure is independent of polarization defects and angular variations up to 45°. It suppresses signals at least by 15 dB in all polarizations and angle of incidences. The parametric optimization of unit cell allows accurate controlling of desired bands and bandwidth. A prototype of the proposed design is fabricated and measured and good agreement between measured and simulated results is demonstrated.

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