Invention Grant
- Patent Title: Acoustical holography with multi-level square wave excitation signals
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Application No.: US14029426Application Date: 2013-09-17
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Publication No.: US09639056B2Publication Date: 2017-05-02
- Inventor: Stephan Falter , James Norman Barshinger , Dirk Lange , Mark Howard Feydo , Werner Lammerich
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: GENERAL ELECTRIC COMPANY
- Current Assignee: GENERAL ELECTRIC COMPANY
- Current Assignee Address: US NY Schenectady
- Agency: Barclay Damon, LLP
- Main IPC: G03H3/00
- IPC: G03H3/00 ; G01S7/00 ; G01S7/523 ; G01N29/06 ; G01N29/34

Abstract:
Systems and methods are disclosed herein in which multi-level square wave excitation signals are used instead of or in addition to fully-analog excitation signals to drive an array of transceiver elements to create a sound field. Use of multi-level square wave excitation signals produces acceptable transceiver output with reduced complexity, cost, and/or power consumption as compared with use of fully-analog excitation signals. In addition, use of such signals facilitates system implementation using application-specific integrated circuits (ASICs) and is not as restricted in voltage level and speed. At the same time, the benefits and applications of fully-analog excitation signals (e.g., acoustic holography, beam superposition, signal-to-noise ratio (SNR) improvements, suppression of parasitic modes, increased material penetration, potential for coded pulsing algorithms and suppression of side lobes in ultrasonic field) can still be achieved with multi-level square wave excitation signals.
Public/Granted literature
- US20150078125A1 ACOUSTICAL HOLOGRAPHY WITH MULTI-LEVEL SQUARE WAVE EXCITATION SIGNALS Public/Granted day:2015-03-19
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