Open AccessDesign of a compact ultra‐wide‐band monopole antenna with band rejection characteristics
Author(s) -
Karimian R.,
Oraizi H.,
Fakhte S.
Publication year - 2014
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0085
Subject(s) - monopole antenna , antenna (radio) , electronic engineering , physics , computer science , electrical engineering , engineering
This study presents a design of two compact monopole antennas with band‐notched characteristics for ultra‐wide‐band application. The compact antennas are etched on an FR4 substrate with the size of 14 × 16 × 1 mm 3 , consists of a tree‐shaped radiation patch with modified ground structure, providing a wide usable fractional bandwidth of more than 170% (2.8–19.2 GHz). To reject certain‐frequency bands, two completely different approaches are proposed. First a shorted T‐shaped quarter‐wavelength resonator is used to omit undesired frequency band of 5.1–5.9 GHz. In the second approach, two L‐shaped slots are inserted in the patch to act as a filter structure for worldwide interoperability for microwave access (3.4–3.6 GHz) and wireless local area network (5–5.6 GHz) applications. The band‐notched can be controlled by adjusting the length of the rectangle slots. The effects of dimensional parameters on the antenna performance have been investigated through a parametric study. Furthermore, current density distribution on the antenna is also computed to gain a better insight of its behaviour. The antennas are investigated numerically and experimentally for their impedance matching properties, frequency notched characteristics and radiation performances.