Dual-Polarized Vivaldi Array on a Triangular Lattice
| Autor: | Bradley T. Binder, Rick W. Kindt |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Offset (computer science) Aperture Acoustics 020206 networking & telecommunications 02 engineering and technology Square (algebra) Reduction (complexity) Lattice (order) 0202 electrical engineering electronic engineering information engineering Radiator (engine cooling) Hexagonal lattice Electrical and Electronic Engineering Wideband |
| Zdroj: | IEEE Transactions on Antennas and Propagation. 69:2083-2091 |
| ISSN: | 1558-2221 0018-926X |
| DOI: | 10.1109/tap.2020.3037691 |
| Popis: | This article presents a dual-polarized Vivaldi array on a triangular lattice. The all-metal ultrawideband Vivaldi features offset radiator pairs that are precision-machined from aluminum stock as a modular tile, similar to earlier reports on more typical all-metal square-lattice Vivaldi arrays. The intent of this work is to validate the embedded element performance of the dual-polarized triangular-lattice Vivaldi, comparing one-to-one with results for a similarly sized dual-polarized all-metal Vivaldi array on a square (egg-crate) lattice, reported previously. The triangular-lattice Vivaldi array is optimally sampled for grating-lobe-free scans with a potential 15.5% reduction in element count compared to a corresponding optimally sampled square-lattice array of similar size. As such, the footprint of the manufactured triangular-lattice Vivaldi array is roughly 8% larger than the square-lattice array, yet has 7% fewer elements. Infinite array predictions are presented and shown to compare favorably with previous findings for the square-lattice Vivaldi array, noting minor performance compromises. Wideband and wide-scan simulations are validated with measurements of prototype hardware, demonstrating that embedded element performance of the triangular-lattice array correlates well with modeling predictions. All told, the triangular-lattice array has similar capability to the square-lattice Vivaldi array in a more efficiently sampled aperture. |
| Databáze: | OpenAIRE |
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