Journal article
Modeling of CW annular arrays using limited diffraction bessel beams
We present a method for characterizing the linear field of any flat, continuous-wave annular array in terms of a set of known limited-diffraction Bessel beams. The technique uses Fourier-Bessel series to model the surface pressure of the transducer surface, with each term in the series giving rise to a Bessel beam with known propagation parameters.
The analysis is applied numerically to two different transducers discussed previously in the literature. In both cases, a deeper understanding of the field emitted than was previously available is gained. Brief outlines for extending the technique to pulsed wave and non-annular arrays are also given.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2002 |
| Pages: | 85-93 |
| ISSN: | 15258955 and 08853010 |
| Types: | Journal article |
| DOI: | 10.1109/58.981386 |
Apertures Bessel functions Biomedical engineering Biomedical transducers CW annular arrays Diffraction Field emitter arrays Fourier series Fourier-Bessel series Laboratories Partial differential equations Quantization Ultrasonic imaging acoustic field limited diffraction Bessel beams linear field nonannular arrays propagation parameters pulsed wave arrays surface pressure transducer surface ultrasonic diffraction ultrasonic propagation ultrasonic transducer arrays
