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M.Tech / M.E / PhD Thesis | Electronics & Communication Engineering | India | Volume 4 Issue 2, February 2015

A Power Effective UWB Sensor Tag with Time Domain Sensor Interface and a Vivaldi Antenna as a Transceiver

Vishnu R. L.

Abstract: 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.

Keywords: IRUWB, PPM, ADC, TOA estimation, power scavenging unit, sampling

Edition: Volume 4 Issue 2, February 2015,

Pages: 2436 - 2439