exponential horn


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exponential horn

n
(General Physics) a horn for the radiation of acoustic or high-frequency electromagnetic waves, of which the cross-sectional area increases exponentially with the length
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Recently, a swept-frequency OHI was described where the absorber panel is placed against the aperture of a well-matched horn.[3] This aperture-matched exponential horn technique offers a reflectivity level lower than -35 dB and has the advantage of using fairly small areas (approximately the size of the horn aperture) of absorbers.
Free-space vs. one-horn interferometer techniques for radar absorber measurements

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