True time-delay beam forming using acousto-optics

Leslie H. Gesell; Terry M. Turpin

doi:10.1117/12.138430

2 December 1992 True time-delay beam forming using acousto-optics

Leslie H. Gesell, Terry M. Turpin

Proceedings Volume 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III; (1992) https://doi.org/10.1117/12.138430
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

Wide aperture arrays for transmitting and receiving wideband signals suffer beam broadening when steered away from array normal with phase delays between the array elements. This beam dispersion is eliminated if the signal is time delayed between antenna array elements. This paper describes an acoustooptic signal processing architecture that generates and controls, with the frequency of a single signal, a set of the time delays required for linear antenna array beam forming. This acousto-optic architecture allows an array to scan a beam rapidly over a continuum of angles. Results of analysis are presented showing that a narrow beam can be formed and maintained as it is scanned over a wide range of angles.

Citation Download Citation

Leslie H. Gesell and Terry M. Turpin "True time-delay beam forming using acousto-optics", Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); https://doi.org/10.1117/12.138430

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