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Class Information
Number: 367/905
Name: Communications, electrical: acoustic wave systems and devices > Side lobe reduction or shading
Description: Acoustic wave echo systems or distance and direction finding systems in which signals received from portions of a transducer array other than the main lobe are diminished or eliminated, the directive pattern of an array being modified by adjusting the distribution of signal phase and/or amplitude over the array.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8670287 Ultrasound apparatus Mar. 11, 2014
7212467 Sonar localization May. 1, 2007
7177233 Synthetic sonar antenna Feb. 13, 2007
7129888 High speed weighting signal generator for sidelobe canceller Oct. 31, 2006
6807487 Mapping permeable reservoir formations by measuring the elastic nonlinear interactions of a seismic wave as it propagates through the reservoir rock matrix and its pore fluids Oct. 19, 2004
6583768 Multi-arm elliptic logarithmic spiral arrays having broadband and off-axis application Jun. 24, 2003
6473362 Narrowband beamformer using nonlinear oscillators Oct. 29, 2002
6205224 Circularly symmetric, zero redundancy, planar array having broad frequency range applications Mar. 20, 2001
6138513 Method and apparatus for fast acquisition of ultrasound images Oct. 31, 2000
6058075 System for canceling interferers from broadband active sonar signals using adaptive beamforming methods May. 2, 2000
5774422 Method of amplitude shading in the time domain to control side lobes in the frequency domain Jun. 30, 1998
5760732 Method and apparatus for enhanced resolution of range estimates in echo location for detection and imaging systems Jun. 2, 1998
5663930 Signal processing system and method for use in multibeam sensing systems Sep. 2, 1997
5627799 Beamformer using coefficient restrained adaptive filters for detecting interference signals May. 6, 1997
5515337 Multibeam side-look sonar system grating side lobe reduction technique May. 7, 1996
5504718 Beam convergence module Apr. 2, 1996
5483500 Signal processing system and method for use in multibeam sensing systems Jan. 9, 1996
5481270 Radar with adaptive range sidelobe suppression Jan. 2, 1996
5417114 Echo based detecting apparatus employing signal generator and correlator May. 23, 1995
5415045 Apparatus and method for detecting flaws in and inspecting an object May. 16, 1995
5414676 Sonar array with reduced grating lobes May. 9, 1995
5347494 Shaped-sweep technology Sep. 13, 1994
5339284 Signal processor for elimination of sidelobe responses and generation of error signals Aug. 16, 1994
5329495 Passive beamformer with low side lobes Jul. 12, 1994
5243567 Sonar beam shaping with an acoustic baffle Sep. 7, 1993
5203823 Detecting apparatus Apr. 20, 1993
5168472 Dual-frequency receiving array using randomized element positions Dec. 1, 1992
5065629 Ultrasonic insection apparatus Nov. 19, 1991
5043951 Apparatus for reduction of side lobes in a beam pattern of an array Aug. 27, 1991
5020034 Directional antenna with multiple transducers, in particular for a sonar May. 28, 1991
4918668 Marine vibrator tuneable array Apr. 17, 1990
4914641 Ultrasonic measuring device and method Apr. 3, 1990
4884251 Housing for a sonic transducer Nov. 28, 1989
4858203 Omnidirectional distance measurement system Aug. 15, 1989
4841492 Apodization of ultrasound transmission Jun. 20, 1989
4794574 Broad band interference sonar having compressed emission Dec. 27, 1988
4780860 Beam forming device Oct. 25, 1988
4713799 Ultrasonic horn with sidelobe suppressing centerpiece Dec. 15, 1987
4672592 Shaded transducer Jun. 9, 1987
4631710 Azimuth adaptive phased array sonar Dec. 23, 1986
4542653 Apparatus and method for beamforming in an ultrasonic transducer array Sep. 24, 1985
4525816 Sonar arrangements Jun. 25, 1985
4521908 Phased-array sound pickup apparatus having no unwanted response pattern Jun. 4, 1985
4513385 Apparatus and method for suppressing side lobe response in a digitally sampled system Apr. 23, 1985
4510586 Array system with high resolving power Apr. 9, 1985
4484317 Multibeam lens/filter combination for sonar sensor Nov. 20, 1984
4460841 Ultrasonic transducer shading Jul. 17, 1984
4455630 Device for forming an image by means of ultrasound Jun. 19, 1984
4363115 Low frequency, log-periodic acoustic array Dec. 7, 1982
4332018 Wide band mosaic lens antenna array May. 25, 1982

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