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Reduction of Beam Squinting and Cross-Polarized Fields in a Wideband CP Element
B.P. Kumar, , C. Kumar
Published in Institute of Electrical and Electronics Engineers Inc.
Volume: 19
Issue: 3
Pages: 418 - 422
Achieving wide circularly polarized (CP) bandwidth in a simple probe-fed microstrip antenna is essential for many practical applications. Existing knowledge guides exploring a thick substrate-based patch design. However, it suffers from two major inherent issues: squinting of beam and high cross-polarized (XP) radiation. No solution is available so far. This letter successfully addresses both issues by imposing restriction on the fringing characteristics as well as modal fields of a suspended substrate circular patch. Engineered ground plane bearing different strategic defects has been explored leading to about 50% correction in beam squinting with reference to antenna boresight and 2-8 dB reduction in a peak XP level. Realistic design, physical insight, and the experimental validation ensure its huge potential for practical applications. © 2002-2011 IEEE.
About the journal
JournalData powered by TypesetIEEE Antennas and Wireless Propagation Letters
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.