Measurement of Parameters of X-Band High-Power Microwave Superradiative Pulses

Wideband Antenna for HPM Measurements

“…The main characteristics used by HPM experimenters is the effective area of antenna, which allows one to calculate a power density. The calibration procedure was similar to the one described in the paper [2]. The network analyser Agilent 8719ET was used in the measurement.…”

“…We use the pyramidal microwave absorber to cover a cable and connector to prevent surface currents which result in standing waves between the receiving end and the connector. Adsorbing plates on the waveguide based antenna do the same [2].…”

“…These HPM generators from decimetres to millimetres frequency bands reach the output peak power of 10 8 …10 9 W with pulse duration of 1…100 ns [1,2]. The challenges of such pulses measurement are naturally caused by their high power level, short pulse duration and relatively wide band comparing to continuously operating sources.…”

“…It is preferred to be linearly polarized to detect radiation polarization. Horns and waveguide based antennas are widely used as receiving ones at X-band and higher frequencies (Figure 1, a) [2]. The coaxial based dipole antennas are preferable at L, S and C-bands as a sizes of waveguides rise with a wavelength (Figure 1, b).…”

Simulation of dummy load for L-S band high power microwave calorimeter

“…1. The wide-aperture dummy load for L-S band calorimeter [6] In order to reduce energy measurement errors it is necessary to minimize the reflection coefficient (backward reflection losses) of the incident electromagnetic wave from dummy load. The wide operating band of the calorimeter provides more universal application.…”