DocumentCode :
800982
Title :
From L-shaped planar monopoles to a novel folded antenna with wide bandwidth
Author :
Ruvio, G. ; Ammann, M.J.
Author_Institution :
Centre for Telecommun. Value-chain-driven Res., Dublin Inst. of Technol., Fac. Of Eng.
Volume :
153
Issue :
5
fYear :
2006
Firstpage :
456
Lastpage :
460
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% (1.6 GHz to 7.5 GHz) for a 10 dB 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. Measurements 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 2.4 GHz (2400-2484 MHz) and 5.2/5.8 GHz (5185-5350/5725-5875 MHz) 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
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; broadband antennas; cellular radio; electric impedance; indoor radio; microwave antennas; monopole antennas; ultra wideband antennas; 2.4 GHz; 5.2 GHz; 5.8 GHz; GSM 1800; Groupe Speciale Mobile; L-shaped planar antenna; PCS1900; UMTS; US-NII band; WLAN communication; feeding point; folded monopole antenna; impedance bandwidth; indoor application; pattern control; personal communication system; radiation characteristics; ultra-wideband communication; universal mobile communications system; wideband coverage; wireless communication system; wireless local area network; wireless local loop;
fLanguage :
English
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
Publisher :
iet
ISSN :
1350-2417
Type :
jour
DOI :
10.1049/ip-map:20050136
Filename :
1717274
Link To Document :
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