No abstract

New design of an effective device for protection against high power electromagnetic pulses has been created based on a pair of noninteracting microstrip resonators, which are coupled in the working fre quency band via a third resonator based on a thin film of high temperature superconductor (HTSC) occur ring in the superconducting state. Under the action of an electromagnetic pulse with the power above a cer tain threshold, the HTSC film element passes from the superconducting to normal (high resistivity) state, thus breaking the coupling between resonators. This leads to power limitation at the device output due to a strong signal reflection from the input.