Short-range radio-telemetry for electronic identification, using modulated RF backscatter

Journal Article · Fri Aug 01 04:00:00 EDT 1975 · Proc. IEEE; (United States)

DOI:https://doi.org/10.1109/PROC.1975.9928· OSTI ID:7279734

Koelle, A R; Depp, S W; Freyman, R W

An electronic identification system which uses modulated backscatter from an rf beam-powered tag is described. A subcarrier is used in the return signal format to allow separation from the background clutter and to allow use of a novel method to avoid rf phase problems. The system is being developed for livestock, such as dairy cattle, and reports the animal's temperature and location. A block diagram of the telemetry systems is shown. (TFD)

• Research Organization: Los Alamos Scientific Lab., NM
• OSTI ID: 7279734
• Journal Information: Proc. IEEE; (United States), Journal Name: Proc. IEEE; (United States); ISSN IEEPA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
ANIMALS
BACKSCATTERING
COMMUNICATIONS
DATA TRANSMISSION
DOMESTIC ANIMALS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
MODULATION
MONITORING
RADIATIONS
RADIOWAVE RADIATION
SCATTERING
TELEMETRY
TEMPERATURE MEASUREMENT