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Adaptive penta-band handset antenna with hand effect compensation
Högskolan i Gävle. (Radiocentrum Gävle)
KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
2012 (English)In: IET Microwaves, Antennas & Propagation, ISSN 1751-8725, Vol. 6, no 1, 79-86 p.Article in journal (Refereed) Published
Abstract [en]

Theincrease in the number of cellular operating bands and theever-increasing criteria antenna size reduction has pushed the need touse switchable antenna structures. Further, the presence of a handin the close vicinity of the antenna causes deterioration inperformance. The authors present a switchable antenna technique, evaluate theeffect of the human hand on it and discuss anovel method to compensate for the mismatch. A penta-band switchableplanar inverted-F antenna covering 824–960 and 1710–2170 MHz has been usedin this study. The presence of the hand was observedto cause 2.0–6.0 dB loss in efficiency for the low band.Using the proposed extra-ground antenna switching method and the dynamicantenna matching, technique the total efficiency of the antenna canbe improved by 0.5–2.5 dB compared to the mismatched case

Place, publisher, year, edition, pages
The Institution of Engineering and Technology , 2012. Vol. 6, no 1, 79-86 p.
Keyword [en]
National Category
Telecommunications Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
URN: urn:nbn:se:kth:diva-91287DOI: 10.1049/iet-map.2010.0529ISI: 000300841400011OAI: diva2:509068
QC 20120504Available from: 2012-05-04 Created: 2012-03-12 Last updated: 2012-05-08Bibliographically approved

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Ramachandran, PrasadhBeckman, Claes
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