Title :
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
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;
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
DOI :
10.1109/IMWS2.2009.5307867
