A Meuro Switch Limiter (or High-Power RF Switch / Limiter module) refers to specialized radio frequency components manufactured by Meuro Microwave Corp. These modules combine RF signal routing (switching) and overpower protection (limiting) in a single, compact assembly to safeguard sensitive front-end receiver components (such as LNAs) from high-power signals or accidental overload. ​Core Functions & Working Principle ​RF Switching: Uses PIN diodes or solid-state switches (e.g., SPDT or multi-port topologies) to direct signals between transmit (Tx), receive (Rx), or antenna ports. ​Power Limiting: Integrates passive PIN diode limiters that allow weak, normal signals to pass through with low insertion loss, while automatically reflecting or suppressing high-power spikes (from radars, transmitters, or interference) to safe levels. ​Key Specifications & Features ​Broad Frequency Range: Covers low RF bands up to microwave/millimeter-wave frequencies (typically ranging from 10 MHz to over 40 GHz depending on model). ​High Power Handling: Capable of handling significant peak and continuous wave (CW) input power levels during transmit or overload conditions. ​Low Insertion Loss & Fast Response: Designed to minimize signal loss in the receive path while offering near-instantaneous switching and limiting response times. ​Rugged Construction: Built in connectorized or surface-mount packages suitable for harsh military and aerospace environments (MIL-STD screening available). ​Key Applications ​Radar Systems: Protecting receiver circuits during high-power radar pulse transmissions. ​Electronic Warfare (EW) & Countermeasures: Preventing front-end burnouts caused by intentional jamming or heavy RF interference. ​Transceivers & Communication Systems: Antenna/Rx isolation in high-power military, satellite, and naval communication terminals.