Improved efficiency of insect pest control system by SSPA

This paper present experimental results of the prototype insect pest control system that use Laterally Diffused MOSFET (LDMOS) as active device in solid-state power amplifier (SSPA) for better efficiency dielectric heating. Nowadays, SSPA were known as the most efficiency device for radio frequency (RF) amplifier. Recently, insect pest control has been moving from chemical fumigation to dielectric heating technique because the chemical that use for insect pest control are affect the environments and they could remain as food residue might affect health in long term. Generally, using high voltage in megahertz range, electric tube (or vacuum tube) can be done for this task. However, the tube, is suffer from low efficiency that might be bad in long term because of electricity bill. The results of using the prototype SSPA pest control system in rice weevil pest control 1000 Watts DC in. 64% overall efficiency was obtained. Cost of the treatment process is US$ 0.00147/kg. The advantage of high efficiency in dielectric heating not only for insect pest control but also could apply to any related applications that use dielectric heating.