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Vol. 2, issue 02, article # 16

pdf Perkalskis B. Sh., Root A. G., Sotiriadi G. N., Larin V. L. Acoustic horn antenna with corrugated lens.. // Atmospheric and oceanic optics. 1989. V. 2. No. 02. P. 170-171.
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Abstract:

A horn-lens aerial with different widths of the principal antenna lobe in the azimuth and zenith (angle-of-elevation) planes is described. Characteristics of an acoustic antenna including a semispherical lens formed by bending planar waveguides are discussed.

References:

1. R.A. Veselovskii, O.P. Dyachenko, V.Z. Larin, et al. Akust. Zh. 34, 347 (1988)
2. Inventor’s Certificate No. 834652 (USSR). A Near-Ground Layer Acoustic Sounding Technique and a Device for its Realization G.I. Sidorov and V.I. Sid’ко in: Bull. Izobret. No. 20 (1981)
3. B.Sh. Perkalskis Wave Phenomena and Physics Course Demonstrations (Izdat. TSU, Tomsk, 1984)