Receiver Protection in S-Band Radars for Mitigation of 4G Signal Interference

摘要

The small-signal performance of a legacy radar receiver protector has been reproduced in an updated high power pre-TR limiter design, to be used in conjunction with (i) an output filter and (ii) low-power limiter at the LNA input. This arrangement provides a retrofit solution into S-Band radar systems to mitigate interference effects from 4G communications signals, and avoids the need for a high-power filter at the antenna.