A 1-to-2.5GHz phased-array IC based on gm-RC all-pass time-delay cells

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    Abstract Electronically variable delays for beamforming are generally realized by phase shifters. Although a constant phase shift can approximate a time delay in a limited frequency band, this does not hold for larger arrays that scan over wide angles and have a large instantaneous bandwidth. In this case true time delays are wanted to avoid effects such as beam-squinting. In this paper we aim at compactly integrating a delay based phased-array receiver in standard CMOS IC technology. This is for instance relevant for synthetic aperture radars, which require large instantaneous bandwidths often in excess of 1GHz, either as RF or as IF bandwidth in a superheterodyne system. We target low-GHz radar frequencies, assuming sub-arrays of four elements and up to 550ps delay.
    Original languageEnglish
    Title of host publicationIEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC 2012)
    Place of PublicationPiscataway
    Number of pages3
    ISBN (Print)978-1-4673-0376-7
    Publication statusPublished - 20 Feb 2012
    EventIEEE International Solid-State Circuits Conference, ISSCC 2012 - San Francisco, United States
    Duration: 19 Feb 201223 Feb 2012


    ConferenceIEEE International Solid-State Circuits Conference, ISSCC 2012
    Abbreviated titleISSCC
    Country/TerritoryUnited States
    CitySan Francisco


    • METIS-286345
    • EWI-21814
    • IR-80301


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