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Compact Yagi‐Uda slot antenna with metamaterial element for wide bandwidth wireless application
Author(s) -
Soheilifar Mohammad Reza
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22380
Subject(s) - antenna factor , patch antenna , antenna measurement , microstrip antenna , coaxial antenna , monopole antenna , electrical engineering , electronic engineering , physics , computer science , antenna (radio) , engineering
In this article, an antenna with the combination of the microstrip slot and Yagi antenna is presented for wideband WLAN (wireless local area network) using CRLH (composite right/left‐handed) as a metamaterial (Left‐hand) element. The T‐shape feed line is investigated as a radiator section and modified for enhancing the bandwidth. The periodic elements are utilized as a novel type of the director to improve the bandwidth to more than 35% and increase the gain of the antenna to more than 80% where the three CRLH elements array are employed as the director of the Yagi antenna. The proposed antenna covers the 2.2 to 8 GHz (113% bandwidth) with a return loss of less than −6 dB ( VSWR less than 3), which makes it suitable for wireless applications for covering different bands including WLAN , LTE (Long Term Evolution), and WiMAX with 47% miniaturization. The final antenna is simulated with CST microwave studio by the time‐domain method of FIT (Finite integration technique). The total size of the antenna is 60 mm × 40 mm × 1.6 mm, which is printed on an FR‐4 substrate, and the experimental results confirm the simulations.