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Dual band‐notch slot antenna by using a pair of Γ‐shaped slits and Ω–shaped parasitic structure for UWB applications
Author(s) -
Ojaroudi Nasser,
Ojaroudi Mohammad
Publication year - 2013
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.27223
Subject(s) - ground plane , stub (electronics) , multi band device , j pole antenna , slot antenna , bandwidth (computing) , physics , microstrip antenna , electrical engineering , antenna (radio) , optics , engineering , coaxial antenna , telecommunications
In this article, we present a novel design of dual band‐notch printed slot antenna for ultrawideband (UWB) applications. The antenna consists of a square radiating stub and a ground plane structure with two Γ‐shaped slits and Ω‐shaped parasitic structure, which provides a wide usable fractional bandwidth of more than 145% (3.04–17.13 GHz). To increase the impedance bandwidth of the ordinary slot antenna, we use two L‐shaped parasitic structure in the ground plane that with this structure UWB frequency range can be achieved. Additionally, using two Γ‐shaped slits, a single frequency band‐stop performance can be achieved, also to create the second notch frequency, we combine an inverted U‐shaped strip with two L‐shaped parasitic structure, that using this additional inverted U‐shaped strip, Ω‐shaped parasitic structure can be created. Simulated and measured results obtained for this antenna show that the proposed slot antenna offers two notched bands, around 3.67–4.13 GHz and 5.09–5.97 GHz, covering all the 5.2/5.8 GHz WLAN, 3.5/5.5 GHz WiMAX and 4‐GHz C‐band range. The antenna has a small dimension of 20 × 20 mm 2 . © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:102–105, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27223