Efficient Design of Harmonic Transponder for UAV Based Harmonic Tracker

Entomologists today are interested in investigating low flying pest insects for determining significance and causes of long range migration, population dynamics and role played by landscape in dispersal and survival of these insects. One of the widest used techniques today for monitoring smaller, low flying insects is using harmonic radars and transponders [1] collectively called harmonic tracker. The technique requires tagging of insects with a transponder mainly consisting of an antenna and non linear device like schottky diode. Antenna of harmonic transponder is primarily used for increasing the efficiency of the schottky diode. It also plays a significant part in determining the weight and size of the transponder. As per our research dipole and monopole have been widely used [1,2]. Presently, there is a need to increase the efficiency, detectable range, minimize the weight, size of the transponder’s antenna.