Miniature circularly polarized antenna for SAW sensor measurements

Author

Monedero, M. ; Tourette, S. ; Le Thuc, P. ; Luxey, C. ; Staraj, R.

Author_Institution

Lab. d´´Electron., Antennes et Telecommun., Univ. de Nice-Sophia Antipolis, Valbonne, France

fYear

2009

fDate

24-25 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

A novel miniature antenna for a wireless pressure measurement system based on a passive surface-acoustic-wave (SAW) sensor is presented in this paper. The SAW sensor used for this application works at 434 MHz in the Industrial-Scientific-Medical (ISM) band. The miniature antenna (lambda/12 times lambda/17 times lambda/63) [6 times 4 times 1.2 cm³] consists of a planar inverted F antenna with a spiral slot. The antenna presents a radiation efficiency of 50%, a bandwidth of 1.75 MHz (0.4%) and a left hand circular polarization (LHCP). The SAW sensor as well as the antenna design and the association of both elements are exposed.

Keywords

UHF antennas; metamaterials; planar inverted-F antennas; polarisation; pressure measurement; slot antennas; surface acoustic wave sensors; ISM; Industrial Scientific Medical band; SAW sensor measurements; bandwidth 1.75 MHz; frequency 434 MHz; left hand circular polarization; miniature circularly polarized antenna; passive surface acoustic wave sensor; planar inverted F antenna; spiral slot; wireless pressure measurement system; Antenna measurements; Computational modeling; Frequency measurement; Mechanical sensors; Microwave sensors; Polarization; Pressure measurement; Sensor systems; Surface acoustic waves; Wireless sensor networks; ISM 434 MHz; SAW; circular polarization; miniature antenna; passive sensor; pressure; wireless;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Sensing, Local Positioning, and RFID, 2009. IMWS 2009. IEEE MTT-S International Microwave Workshop on

Conference_Location

Cavtat

Print_ISBN

978-1-4244-5060-2

Electronic_ISBN

978-1-4244-5062-6

Type

conf

DOI

10.1109/IMWS2.2009.5307867

Filename

5307867