Design and fabrication of plasma limiter to protect for Communication Applications

The energy from electromagnetic pulses causes disruption and failure of electronic systems used in radars and communications equipment sush asthe ELINT system. The rate of influence of high-powered electromagnetic waves and their electric fields on the equipment depends on two parameters: the intensity of the electric field and the target coating method....the plasma is one way to protect against electromagnetic threats. When an electromagnetic pulse is propagated through a plasma limiter, the charge particles accelerate, and the magnetic field generated by the electromagnetic wave can change the state of the gas to plasma. In this paper, the design theory of a plasma limiter based on a new structure in 1.8 to 2.8 GHz is presented. By introducing various power generation sources, numerical analysis, simulation and optimization of plasma limiter are investigated and the prototype of plasma limiter is tested to protect the ELINT receiver in the frequency range of 1.8 to 2.8 GHz at 1200 and 1800 w. The measured results show that the return loss is better than -10 dB in 1.8 to 2.8 GHz. After optimizing, the value of h was obtained in 19 mm and the value of n was about 46 mm, which in the constructed sample, we placed it at 47 mm, ie exactly in the center. The laboratory results during high power pulses show an excellent agreement with respect to finite element method.