Mobile Terminal Antenna Performance With the User´s Hand: Effect of Antenna Dimensioning and Location

Author

Ilvonen, Janne ; Kivekäs, Outi ; Holopainen, Jari ; Valkonen, Risto ; Rasilainen, Kimmo ; Vainikainen, Pertti

Author_Institution

Dept. of Radio Sci. & Eng., Aalto Univ., Aalto, Finland

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

772

Lastpage

775

Abstract

This letter reports a systematic simulation study of the performance of mobile terminal antennas in the vicinity of the user´s hand. The effects of antenna dimensioning and antenna location on the ground plane of the device are demonstrated. The studied performance parameters are quality factor, radiation efficiency, and frequency detuning. Based on the results, beneficial approaches and general guidelines for antenna designs with a reduced effect of the user´s hand can be given. For instance, it is shown that the radiation efficiency with the user´s hand stays nearly constant (variation <;0.2 dB) despite the changes in the antenna element height (2-6.6 mm at 900 and 2000 MHz).

Keywords

Q-factor; UHF antennas; microstrip antennas; mobile antennas; antenna dimensioning; antenna location; frequency 2000 MHz; frequency 900 MHz; frequency detuning; ground plane; microstrip antennas; mobile terminal antenna; quality factor; radiation efficiency; Couplings; Dielectrics; Indexes; Mobile antennas; Q factor; Resonant frequency; Capacitive coupling element (CCE); microstrip antennas; mobile antennas; user effect;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2163290

Filename

5966313