Development of Microstrip Structure and Microstrip Sensor for Measurement of Transient Electromagnetic Pulse
Keywords:
Effective height, HEMP, microstrip structure, sensor, transient electromagnetic pulseAbstract
In this paper, a type of microstrip structure and sensor based on the microstrip structure are designed, fabricated and tested for the measurement of transient electromagnetic pulse. The voltage on the terminal load of microstrip line illuminated by a plane wave is analyzed, and a method of recovering the incident electric field is presented to recover the transient electromagnetic pulse by numerical processing. The proposed microstrip structures are set on the shielding boxes. The start of microstrip structure 1 without substrate is short circuited, and the start of microstrip structure 2 with substrate is matched. The induced voltage is acquired from the ends of microstrip structures. The simulated results and the measured results verify that the microstrip structures can be used to measure the transient electromagnetic pulse with rise time of ≥ 1 ns. The simulated results show that the microstrip structures have wide bandwidths of 1.5 GHz and 2.5 GHz, respectively. In addition, the simulated effective heights show consistency with the measured effective heights. The microstrip sensors, built by adding the electro-optical conversion modules into the shielding boxes, have good fidelity and can be used to measure high-altitude electromagnetic pulse (HEMP).
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