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- Title
Multiband low-cost fractal antenna based on parasitic split ring resonators.
- Authors
Sharma, Vipul; Lakwar, Neeraj; Kumar, Nitin; Garg, Tanuj
- Abstract
This study presents the design of a low-cost fractal antenna loaded with parasitic edge-coupled (EC) split ring resonators (SRR). Parasitic EC SRR elements result in improved impedance matching leading to improved bandwidth. The basic resonant structure is a circular patch antenna designed at 3.2 GHz on low-cost FR4 substrate with relative permittivity 4.4, and 1.6 mm thickness. A single iteration of circular patch and slots is used to make it fractal and in order to achieve multiband performance, the antenna is inset fed by a 50 Ω microstrip line. A prototype of the proposed antenna is fabricated and tested for results, a comparison between fractal antenna with and without SRRs is made and the results confirm that a better impedance matching is achieved in the later case, also a 3% increase in bandwidth is achieved at 8.5 GHz. A good agreement between simulated and measured results is obtained, an estimated gain of 13.3 dB is provided by the proposed antenna. The overall dimensions of the antenna are 45 mm x 45 mm and it may be used for wireless applications at 3, 5, 6.8, 7.5 and 8.5 GHz with an average bandwidth of 200 MHz.
- Subjects
ANTENNAS (Electronics); BANDWIDTHS; THICKNESS measurement; PERMITTIVITY; ITERATIVE methods (Mathematics)
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2018, Vol 12, Issue 6, p913
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/iet-map.2017.0623