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G. Lasser, L.W. Mayer, C. Mecklenbräuker:
"Compact low profile UHF switched-beam antenna for advanced tyre monitoring systems";
Talk: IEEE Conference on Antennas and Propagation in Wireless Communications(APWC), Kapstadt; 09-02-2012 - 09-07-2012; in: "2012 IEEE-APS Topical Conference on Antennas und Propagation in Wireless Communications", (2012), ISBN: 978-1-4673-0403-0; 4 pages.

Advanced tyre monitoring systems are
based on small sensor units directly embedded into
the tyre rubber. In contrast to conventional tyre
monitoring systems, more data like vibration information
and slip angle are collected at this exposed
position, so vehicular safety systems can be
further improved. Powering of and communication
with these sensor units, could be done with UHF
radio frequency identification technology. In this
contribution we propose a novel compact switchedbeam
antenna suitable for UHF frequencies. When
mounted below the body floor pan of a vehicle, its
directivity of 6 dB and the possibility to switch the
main beam direction in 90° steps enables selection
of a specific tyre for communication. Finally, we
present measurements of the assembled antenna performed
in an anechoic chamber.

RFID, TPMS, ATMS, Antenna, switched-beam

http://publik.tuwien.ac.at/files/PubDat_210813.pdf