Acoustically Steered and Rotated (ASTRO) Optoelectronic 2-D True Time Delay Generation

Published

January 25, 1998

Author(s)

E G. Paek, Joon Y. Choe, Tae K. Oh

Abstract

The phased array antenna is an important technology for future wireless communications. True time delay methods as opposed to phase-shifting method) allow wideband signals such as multimedia, without causing the squint effect. However, the method requires a large number of interconnections with a broad range of time delays that in turn need to be configured within a few microseconds. The methods proposed so far involve a significant amount of device complexities.This paper describes a new photonic 2-D true time delay (TTD) generating system architecture for phased array antennas. The method uses fiber chip gratings and acousto-optic beam deflectors. By combining free-space optics and guided optics, the device complexity in conventional TTD systems has been significantly reduced. A proof-of-concept experimental results are demonstrated.

Proceedings Title

Proceedings of SPIE (Society of International Optical Engineers), Photonics West '98, Optoelectrics

Conference Dates

January 24-30, 1998

Conference Title

Photonics West

Pub Type

Conferences

Keywords

acousto-optic beam deflector, beam steering, Fiber Bragg gratings, optical interconnection, optoelectronics, phased array antennas, true time delays

Citation

Paek, E. , Choe, J. and Oh, T. (1998), Acoustically Steered and Rotated (ASTRO) Optoelectronic 2-D True Time Delay Generation, Proceedings of SPIE (Society of International Optical Engineers), Photonics West '98, Optoelectrics (Accessed October 22, 2025)