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On the basis of suitable theoretical grounds, we study and propose Antennasfor the generation, in Acoustics, of Non-Diffracting Beams of ultrasound. Westart considering for instance a frequency of about 40 kHz, and foresee fairresults even for finite apertures endowed with reasonable diameters (e.g., of 1m), having in mind various possible applications, including remote sensing.Then, we discuss the production in lossy media of ultrasonic beams resistingboth diffraction and attenuation. Everything is afterward investigated for thecases in which high-power acoustic transducers are needed (for instance, fordetection at a distance -or even explosion- of buried objects, like mines).  Keywords: Acoustic Non-Diffracting Beams; Truncated Beams of Ultrasound;Remote sensing; Diffraction, Attenuation, Annular transducers, Bessel beamsuperposition, High-power ultrasound emitters, Beams resisting diffraction andattenuation, Acoustic Frozen Waves, Detection of buried objects, Explosion ofMines at a distance

Acoustic (Ultrasonic) Non-Diffracting Beams: Some theory, and Proposals of Acoustic Antennas for several purposes