RF signal Limiters and Detectors
PIN-PIN limiters | PIN-Schottky Limiters | High Reliability Limiters | Limiting Amplifiers
RF Signal Limiters
PIN diode limiters are designed to protect power-sensitive microwave components in a receiver chain such as Mixers, Detectors, and Low Noise Amplifiers against damage from high-power CW and pulsed-microwave signals. PIN diodes are commonly used because they can handle high power signals and provide reasonable leakage. A limiter prevents overload by allowing RF signals that are below certain threshold to pass through, but larger signals exceeding the threshold are increasingly attenuated.
Power measurement and control are important because RF power, rather than voltage, is the primary measure of a wired or wireless signal. Detectors monitor the output level of a power amplifier in a radio transmitter. Detectors indicate the presence or absence of an RF signal and detectors are important for maintaining the range of reliability of a radio link.