A preliminary investigation of miniature loudspeaker high frequency resonance and its impact to antenna radiation performance

Author

Chen, X.L. ; Chavannes, N. ; Kuster, N. ; Ng, G.H. ; Tay, Y.S.

Author_Institution

IT´´IS Found., Zurich, Switzerland

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

The objective of this study is to investigate the near field coupling between a miniature loudspeaker and a nearby antenna. The analysis focuses on the loudspeaker voice coil radio frequency resonance characteristics and antenna radiation efficiency degradation due to the presence of the loudspeaker. Both measurement and simulation results are given to assess the impact of a loudspeaker when it is placed in close proximity with a monopole antenna mounted on a printed circuit board. This study leads to a better understanding to achieve optimum antenna-loudspeaker integrated module design for mobile devices.

Keywords

antenna radiation patterns; coils; loudspeakers; mobile handsets; monopole antennas; printed circuits; antenna radiation efficiency degradation; antenna radiation performance; loudspeaker voice coil radiofrequency resonance characteristics; miniature loudspeaker high-frequency resonance; mobile devices; monopole antenna; near field coupling; optimum antenna-loudspeaker integrated module design; printed circuit board; Antenna measurements; Antennas; Coils; Loudspeakers; Numerical models; Resonant frequency; Solid modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6347944

Filename

6347944