High-Power Multi-Function Radar Receiver Protection

Modern solid-state limiter receiver protection devices are described, addressing the broad range of operating frequencies and system power levels encountered in modern radar systems. In particular, the replacement of legacy transmit/receive (TR) cells with solid-state receiver protectors (SSRPs) enables receiver protection performance without the added lifecycle costs of radio-active gas fillings and high-voltage power supply infrastructure. Where high power levels persist, due to operational or asynchronous conditions, then gas tube (pre-TR tube or gas switch) solutions can be used, neither of which require a radioactive or high-voltage corona primer within the tube. Multifunction devices allow the integration of the receiver protector with further system functions, such as noise sources, sensitivity time control (STC) attenuation and filtering, optimising electrical performance, physical size and mass of the device