Kumar, B. Pavan ; Guha, Debatosh ; Kumar, Chandrakanta (2020) Reduction of Beam Squinting and Cross-Polarized Fields in a Wideband CP Element IEEE Antennas and Wireless Propagation Letters, 19 (3). pp. 418-422. ISSN 1536-1225
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Official URL: http://doi.org/10.1109/LAWP.2020.2968406
Related URL: http://dx.doi.org/10.1109/LAWP.2020.2968406
Abstract
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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Electrical and Electronics Engineers. |
| Keywords: | Broadband; Circular Polarization; Defected Ground Structure (Dgs); Microstrip Antenna; Pattern Symmetry. |
| ID Code: | 117231 |
| Deposited On: | 21 Apr 2021 12:22 |
| Last Modified: | 21 Apr 2021 12:22 |
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