%0 Journal Article %T Antipodal Vivaldi Antenna for Water Pipe Sensor and Telemetry %A Giuseppe Ruvio %A Domenico Gaetano %A Max J. Ammann %A Patrick McEvoy %J International Journal of Geophysics %D 2012 %I Hindawi Publishing Corporation %R 10.1155/2012/916176 %X An antipodal Vivaldi antenna operates simultaneously for telemetry and sensing when placed conformally onto PVC pipes. Good radiation efficiency is realised and the antenna impedance matching remains stable when a pipe is empty or contains water. The fidelity factor performance based on an input Ultra-Wideband Gaussian pulse is a suitable figure of merit to detect water presence. Different water levels and pipe conditions correspond to fidelity factors between 90% and 96%, which are a suitable dynamic range for sensing and the appropriate quality for pulse communications for remote monitoring. %U http://www.hindawi.com/journals/ijgp/2012/916176/