US 12,078,708 B2
Acoustic horn phased array
Moshe Benezra, Elmsford, NY (US)
Filed by Moshe Benezra, Elmsford, NY (US)
Filed on Sep. 23, 2021, as Appl. No. 17/483,779.
Claims priority of provisional application 63/082,910, filed on Sep. 24, 2020.
Prior Publication US 2022/0091215 A1, Mar. 24, 2022
Int. Cl. G01S 1/80 (2006.01); G01S 15/32 (2006.01); H04R 3/00 (2006.01)
CPC G01S 1/805 (2013.01) [G01S 15/325 (2013.01); H04R 3/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A phased array acoustic device comprising:
a) N≥2 acoustic horns,
b) M≥1 acoustic transducers,
c) a digital computer interface,
d) a digital computer,
e) an optional K≥0 acoustic faceplates,
f) an optional L≥0 acoustic phase shifters,
g) an optional L actuators,
h) optional R≥0 acoustic mixers;
wherein: the fill-factor of the array, defined as the total area of horns' mouths divided by the area of the array, is greater than 50%;

OG Complex Work Unit Math
AF(θ) is the normalized array factor,
θ is the angle of arrival relative to the boresight of the array,
Wc is a weight for each element,
t is time,
ω is 2πf,
f is the frequency,

OG Complex Work Unit Math
λ is the wavelength,
θ0 is the boresight direction,
d is displacement of the horns, and
rn is a perturbation applied to each horn.