Implementation of HPM Front-door protections and component investigations

This report summarises the work done in the HPM-protection project, within front-door protection. The results from HPM- and UWB-measurements on the limiter TGL2201EPU combined with the Low Noise Amplifier (LNA) MAALGM0003-DIE show that the combination works, the limiter protects the LNA against damage. For HPM-pulses(HPM single pulse, pulse width = 100 ns, f=6 GHz) the susceptibility level is 41 dBm in peak pulse power and for UWB-pulses the corresponding level is more than 60 dBm. The results mentioned above can be compared with the results from the susceptibility testing of the LNA MAALGM0003-DIE from MA/Com, without limiter protection. Both UWB- and HPM-measurements were done, the susceptibility was of the LNA was 34 dBm for HPM-pulses and 52-54 dBm for UWB-pulses. The limiter increases the susceptibility level with at least approximately 7 dB. The results from the MMIC Schottky-diode limiter designed at FOI have showed to have good agreement between measured and simulated values, but it is not good enough to be used in a real application. For DC up to 3 GHz the susceptibility was increased from 20 dBm to about 28 dBm at the cost of about 1.5 dB in small signal insertion loss.