From L-shaped Planar Monopoles to a Novel Folded Antenna with Wide Bandwidth

Title From L-shaped Planar Monopoles to a Novel Folded Antenna with Wide Bandwidth
Publication Type Journal Article
Year of Publication 2006
Authors Ruvio, G, Ammann, MJ
Journal Title IEE Proceedings. Microwaves, Antennas & Propagation
Volume 153
Issue 5
Pagination 456-460
Journal Date 10/2006
Abstract A novel folded monopole antenna is investigated numerically and experimentally. The proposed antenna comprises a short folded monopole suitably shaped at the base with two vertical grounding probes. This small antenna is shown to have a fractional impedance bandwidth up to 125%(1.6GHz to 7.5GHz) for a 10dB return loss.An interesting compromise between impedance bandwidth and pattern control is found by tuning a double side bevel at the base of the monopole, the position of the feeding point and its distance from the ground plane. easurements and simulations are in good agreement and show a dramatic improvement in terms of impedance bandwidth compared with planar and L-shaped monopole antennas. Impedance and radiation characteristics make this novel folded monopole antenna a remarkable candidate for indoor applications where the wideband coverage of different systems is required. The working bandwidth covers a large number of wireless communication systems including GSM 1800, Personal Communication System (PCS1900), Universal Mobile Communications System (UMTS), the 2.4GHz (2400–2484MHz) and 5.2/5.8GHz (5185–5350/5725–5875MHz) bands for WLAN communication, Wireless Local Loop (3.4–3.6 GHz), the US-NII bands and the lower bands allocated to ultra-wideband communications.
URL http://ieeexplore.ieee.org/iel5/2196/36120/01717274.pdf?tp=&isnumber=36120&arnumber=1717274&punumber=2196
DOI 10.1049/ip-map:20050136
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