SCIENTIFIC AND TECHNICAL AEROSPACE REPORTS

A Biweekly Publication of the National Aeronautics and Space Administration
VOLUME 44, ISSUE 8 - April 21, 2006

04 AIRCRAFT COMMUNICATIONS AND NAVIGATION
Includes all modes of communication with and between aircraft; air navigation systems (satellite and ground based); and air traffic control.

For related information see also 06 Avionics and Aircraft Instrumentation; 17 Space Communications, Spacecraft Communications, Command and Tracking; and 32 Communications and Radar.

20060010502 NASA Langley Research Center, Hampton, VA, USA

RFID Transponders’ Radio Frequency Emissions in Aircraft Communication and Navigation Radio Bands

Nguyen, Truong X.; Ely, Jay J.; Williams, Reuben A.; Koppen, Sandra V.; Salud, Maria Theresa P.; March 2006; 85 pp.; InEnglish; Original contains color and black and white illustrationsContract(s)/Grant(s): DFTA03-96-X-90001; NCC3-1043; NCC3-1078; 079-30-00Report No.(s): NASA/TP-2006-214295; L-19243; Copyright; Avail.: CASI: A05, Hardcopy

Radiated emissions in aircraft communication and navigation bands are measured from several active radio frequencyidentification (RFID) tags. The individual tags are different in design and operations. They may also operate in differentfrequency bands. The process for measuring the emissions is discussed, and includes tag interrogation, reverberation chambertesting, and instrument settings selection. The measurement results are described and compared against aircraft emissionlimits. In addition, interference path loss for the cargo bays of passenger aircraft is measured. Cargo bay path loss is moreappropriate for RFID tags than passenger cabin path loss. The path loss data are reported for several aircraft radio systemson a Boeing 747 and an Airbus A320.Author

Radio Frequencies; Reverberation Chambers; Cargo Aircraft; Navigation; Transponders

Source: NASA