High-performance circularly polarized antenna array using metamaterial-line based feed network

Kwok L. Chung

    Research output: Contribution to journalArticlepeer-review

    70 Citations (Scopus)

    Abstract

    This communication presents a 2x2 circularly polarized (CP) antenna array composed of H-shaped patches. The uniqueness of this CP array is its feeding network, where state-of-the art metamaterial transmission lines (MMLs) are built to obtain the required quadrature phases. Experimental results show that the feed network has excellent power distribution and progressive phases over a wide bandwidth. As a consequence, the MML-based array exhibits excellent performance, viz. 85% impedance bandwidth (SWR ≤ 2), 89% axial-ratio (3-dB) bandwidth, 80% efficiency at a center frequency of 2.5 GHz and 55% pattern bandwidth with a criterion of 8-dBic gain level. The axial-ratio bandwidth is validated with cross-polar discriminations obtained from radiation patterns.
    Original languageEnglish
    Pages (from-to)1-5
    Number of pages5
    JournalIEEE Transactions on Antennas and Propagation
    Volume61
    Issue number12
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Dive into the research topics of 'High-performance circularly polarized antenna array using metamaterial-line based feed network'. Together they form a unique fingerprint.

    Cite this