A Power Effective UWB Sensor Tag with Time Domain Sensor Interface and a Vivaldi Antenna as a TransceiverJournal: International Journal of Science and Research (IJSR) (Vol.4, No. 2)
Publication Date: 2015-02-05
Authors : Vishnu R. L.;
Page : 2436-2439
Keywords : IRUWB; PPM; ADC; TOA estimation; power scavenging unit; sampling;
A wirelessly powered UWB sensor tag is proposed for sensing application and a Vivaldi antenna is used for effective transmission and reception of sensed information. Instead of traditional ADC a PPM-UWB is used to convert sensed information to a time domain signal. The proposed system is wirelessly powered from the RF wave. The sensed analog information is been compared with a triangular wave and converts to PPM signal which is again converted into UWB pulses and is transmitted. The use of vivaldi antenna is an added advantage. The commonly used IR-UWB antenna is micro strip antenna, of this type Vivaldi antenna is the most effective antenna for IR-UWB pulses transmission.
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