Wideband Acousto-Optic Bragg Cells Using Phased Array Techniques: Design And Modeling

K. A. Mai; D. Penunuri

doi:10.1117/12.939935

10 June 1987 Wideband Acousto-Optic Bragg Cells Using Phased Array Techniques: Design And Modeling

K. A. Mai, D. Penunuri

Proceedings Volume 0753, Acousto-Optic, Electro-Optic, & Magneto-Optic Devices & Applications; (1987) https://doi.org/10.1117/12.939935
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

The high frequency, wideband acousto-optic light deflector is an excellent candidate in many EW systems such as radar warning receivers and communications signal processing. In order to provide such needs, broad bandwidth acousto-optic Bragg cells for the gigahertz frequency range are developed. To track Bragg angle for broadband operation, a phased array design is employed and therefore its performance needs to be well understood, especially at microwave frequencies. In this paper we propose a new acoustic phased array transducer model. A microwave model for conversion of an RF signal to an acoustic beam is presented. The model is based on calculating the phased array transducer interdigital capacitance from coupled transmission lines theory. We also discuss the impact of other transmission line effects at electromagnetic wavelengths. The microwave phased array transducer model is then used to predict the behavior of the electrode voltages and currents and of the overall capacitance.

Citation Download Citation

K. A. Mai and D. Penunuri "Wideband Acousto-Optic Bragg Cells Using Phased Array Techniques: Design And Modeling", Proc. SPIE 0753, Acousto-Optic, Electro-Optic, & Magneto-Optic Devices & Applications, (10 June 1987); https://doi.org/10.1117/12.939935

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