Investigating the jamming effect of HPM with different frequencies on SDR

This study examines the high-power microwave (HPM) jamming effect on software-defined radio (SDR). Following theoretical analysis and formula derivation of the single-tone jamming, the HPM jamming effect is validated using an SDR platform. Jamming is relatively easily achieved when the jamming signal falls within the communication system's frequency band. For out-of-band signals, a higher jamming signal ratio is needed, with the receiving front-end device's nonlinearity causing the jamming. This study highlights the susceptibility of broadband receivers to HPM jamming, demonstrating that even out-of-band threats cannot be disregarded in wideband receiver designs for strong signals such as HPM.