DIFFRACTION EFFECTS IN MEASUREMENTS OF CHARACTERISTICS OF HIGH-POWER MICROWAVE PULSES WITH WIDE-APERTURE LIQUID CALORIMETERS

摘要

Numerical nonstationary simulation of diffraction by a quasi-plane three-layer wide-aperture absorbing loads of liquid calorimeters intended for measuring the energy of high-power microwave radiation pulses is performed using the electromagnetic code KARAT with application to the S-band. It is shown that these effects can cause significant distortion of the microwave pulse shape behind the load as well as underestimation of the measured energy by 10-20%.