Design and characterization of a low profile miniaturized UHF PIFA for compact wireless sensor nodes

Author

Ohnimus, Florian ; Erxleben, Robert ; Tschoban, Christian ; Ndip, Ivan ; Niedermayer, Michael ; Scholtz, Hendrik ; Bonim, Thomas ; Guttowski, Stephan ; Lang, Klaus-Dieter

Author_Institution

Berlin Inst. of Technol., Tech. Univ. Berlin, Berlin, Germany

fYear

2010

Firstpage

257

Lastpage

260

Abstract

In this work, a miniaturized planar inverted-F antenna (PIFA) with low profile on a small ground plane is designed and characterized for integration in a compact autarkic wireless sensor node. The physical size of the antenna is 24 mm × 11 mm × 3 mm (0.07λ × 0.03λ × 0.01λ) including the small ground plane and operates in the UHF band at 868 MHz with a -10 dB impedance bandwidth of 9 MHz. The antenna gain is -12 dBi. The resonance frequency and input impedance can be easily tuned by altering the meander length and shorting post position, respectively. Simulation and measurement results are presented.

Keywords

UHF antennas; planar inverted-F antennas; wireless sensor networks; UHF band; autarkic wireless sensor node; compact wireless sensor nodes; frequency 868 MHz; low profile miniaturized UHF PIFA; miniaturized planar inverted-F antenna; size 11 mm; size 24 mm; size 3 mm; Antenna measurements; Loaded antennas; Resonant frequency; Wireless communication; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Conference (LAPC), 2010 Loughborough

Conference_Location

Loughborough

Print_ISBN

978-1-4244-7304-5

Type

conf

DOI

10.1109/LAPC.2010.5666160

Filename

5666160