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    Opto-VLSI-based broadband true-time delay generation for phased array beamforming

    Access Status
    Fulltext not available
    Authors
    Juswardy, Budi
    Xiao, F.
    Alameh, K.
    Date
    2009
    Type
    Conference Paper
    
    Metadata
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    Citation
    Juswardy, B. and Xiao, F. and Alameh, K. 2009. Opto-VLSI-based broadband true-time delay generation for phased array beamforming.
    Source Title
    Proceedings of SPIE - The International Society for Optical Engineering
    DOI
    10.1117/12.843475
    ISBN
    9780819479051
    School
    Curtin Institute of Radio Astronomy (Physics)
    URI
    http://hdl.handle.net/20.500.11937/46604
    Collection
    • Curtin Research Publications
    Abstract

    Electronically controlled phased-array antennas can adaptively scan radiated beams in three-dimensional space without mechanically moving parts. While most of the research on phased-array antennas has been focusing on broadband beam steering less attention has been devoted to null steering. Broadband null steering requires a beamformer that can generate variable and frequency independent true time-delays (TTD). In this paper we propose and demonstrate the concept of an Opto-VLSI-based tunable true-time delay generation unit for adaptive null steering in phased array antennas, where arbitrary single or multiple true-time delays can simultaneously be synthesized. Simulated azimuth gain patterns for a 4- element antenna arrays is presented, and experimental results are shown, which demonstrate the principle of the proposed true-time delay unit. © 2009 Copyright SPIE - The International Society for Optical Engineering.

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