Title :
Compact antennas for wireless langasite SAW sensors
Author :
Chin, T.-L. ; Greve, D.W. ; Oppenheim, Irving J.
Author_Institution :
Nat. Energy Technol. Lab., Pittsburgh, PA, USA
Abstract :
Wireless surface acoustic wave sensors are an attractive solution to harsh environment sensing. In this paper we explore several different compact antenna designs for use with langasite SAW devices. We find that folded dipole and meander dipole antennas represent a good compromise between physical size and efficiency of coupling between the antenna and the SAW device. Wireless operation has been achieved up to 650°C with a meander dipole that is about one quarter wavelength in the largest dimension.
Keywords :
dipole antennas; gallium compounds; lanthanum compounds; surface acoustic wave sensors; wireless sensor networks; La3Ga5SiO14; antenna coupling; compact antenna design; environment sensing; folded dipole antenna; meander dipole antenna; quarter wavelength; wireless SAW sensor; wireless surface acoustic wave sensor; Dipole antennas; Impedance; Surface acoustic wave devices; Surface acoustic waves; Temperature sensors; Surface acoustic wave; langasite; sensor; temperature; wireless;
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1253-1
DOI :
10.1109/ULTSYM.2011.0202
