TEM loudspeaker-based movable electromagnetic pulse radiation wave simulator

Abstract

The invention provides a TEM loudspeaker-based movable electromagnetic pulse radiation wave simulator, and aims at meeting the requirements of strong low-frequency radiation capability and small size.The TEM loudspeaker is an exponential gradual loudspeaker, namely, the heights of upper and lower plates are changed exponentially; a metal straight plate having a same width with the mouth surface of the exponential TEM loudspeaker is loaded at the end of the mouth surface; an inclined metal plate is added; and. the beginning end of the inclined metal plate is electrically connected via a resistor. In such way, diversion is carried out for twice by using the metal plates, so that the problem that the conventional TEM loudspeakers have relatively strong reflection at the ends is avoided and the enhancement of low-frequency radiation capability is realized; the resistor at the beginning end of the inclined plate not only absorbs the current on the inclined plate, but also avoids the reflection interference of a forward radiation field of the simulator; and the inclined plate is inclined from the mouth surface toward the vicinity of a feeding end, thereby achieving the effect of reducing the size of the simulator.

Description

Technical field [0001] The invention relates to a movable electromagnetic pulse radiation wave simulator structure based on a TEM horn. Background technique [0002] The electromagnetic pulse simulator can be used to assess the electromagnetic pulse protection performance of the test equipment. For this reason, the development of a low-cost, miniaturized, light-weight, movable, radiating electromagnetic pulse field simulator with adjustable polarization direction and good directivity has practical significance and practical value. Compared with the cage antenna, the TEM horn as an electromagnetic pulse radiation wave simulator has the advantages of constant impedance, wide frequency band, good directivity, relatively small volume and large effective test area, but there are constant TEM horns with limited length The shortcomings of poor low-frequency radiation performance, and in order to achieve the purpose of mobility, it is required that the simulator must be miniaturized. F...

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Problems solved by technology

[0004] In the design of the electromagnetic pulse radiation wave simulator based on the TEM horn, simply using the above-mentioned methods can improve the low-frequency radiation capability of the simulator and thus widen the pulse width of the near-field radiation of the simulator, but the designed pulse width of the electromagnetic pulse can reach The required size of the simulator will be large, and adding an upright metal plate at the rear end of the inclined metal plate will increase the reflection, which will lead to the aggravation of the delay oscillation in the near field of the simulator radiation, and reduce the low frequency radiation capability of the simulator

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