Microwave Power Limiter Having H-Shaped Slot Structure With Enhanced Plasma Discharge by Electrostatic Potential

Microwave Power Limiter Having H-Shaped Slot Structure With Enhanced Plasma Discharge by Electrostatic Potential

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A microwave power limiter with an H-type slot structure is proposed as a waveguide structure that blocks high-power microwaves through plasma discharge.At an operating frequency of 5.75 GHz, the electric field is concentrated in Trail Cans the discharging electrode gap; when high power is applied, the plasma limiter discharges, and low power is transmitted.

By contrast, when low power is applied, it is transmitted without loss.An H-type resonance structure was used to increase the electric field concentration and selectivity within the waveguide.At 5.

75 GHz, the insertion loss of the H-type slot structure was 1.85 dB.The electric field concentration increased to 49492 V/m, and the 3 dB Electric Range Cooker bandwidth was 535 MHz.

In addition, the plasma discharge onset level in the xenon gas was lower because of the electrostatic potential.When an electrostatic potential of 300 V was applied, the plasma discharge onset level decreased from 310 to 180 W.