SUPERHIGH-FREQUENCY PROTECTIVE DEVICE Russian patent published in 2001 - IPC

FIELD: microwave electronics. SUBSTANCE: device designed to protect output stages of microwave receivers against microwave pulse power of about 100 kW at mean power up to 1 kW and to control signal power and phase has electron gun, input and output cavities separated by diaphragm, and collector. Fast cyclotron electron-flow waves are used for signal transmission. Recovery time of device is as short as 10-20 ns, power penetrating to microwave output is as low as 1-5 mW, its service life amounts to thousands of hours; device may be used as controlled attenuator and phase shifter. EFFECT: reduced recovery time, improved reliability of device and efficiency of counter- countermeasures.