AN EFFICIENT HIGH POWER WATER DUMMY LOAD AT 2.45 GHz

A water dummy load developed as an element of equipment in the composition of a microwave atmospheric pressure plasmatron operating at a frequency of (2450±50) MHz is described. The load is created on the base of a rectangular waveguide with a cross-section of 90x45 mm. The simulation results carried out by CST Microwave Studio shows that the return losses reach -42 dB at 2.45 GHz. In the frequency band from 2 to 2.9 GHz, the load provides a voltage standing wave ratio (VSWR) of at least 1.2. The effect of changes in water temperature and salinity on the device characteristics is studied. The load is manufactured and successfully used as part of experimental waveguide paths.