A low cost HPM receiver

A simple HPM (high power microwave) receiver was developed to monitor the incident power density where sensitive electronics are present and to provide a record of the occurrence of potentially damaging RF exposure. This receiver measures the peak value of the incident field strength over a broad instantaneous bandwidth (1 to 6 GHz), identifies time periods during which threshold field strengths (2, 10, and 50 V/m) are exceeded, provides coverage over a +or-45 degrees field of view, and will detect a single pulse whose duration exceeds 250 ns. The receiver uses a simple design to permit low-cost fabrication. A unique microstrip antenna was developed to fulfil design objectives.<>