Design of a Wavelength Scaled Cylindrical Array (WSCA)
Abstract
Ultra-wide bandwidth (UWB) cylindrical arrays are important apertures for applications requiring full 360 degree coverage in azimuth as they offer many benefits over multi-faced planar arrays for such applications. To maximize their performance and to demonstrate their benefits over planar arrays, the cylindrical arrays aperture must have elements spaced near half-wavelength both circumferentially and vertically (alongthe axis of the cylinder) at the high frequency of operation. For UWB operation, the height and/or radius of the array is often set by the desiredaperture size for the low frequency of operation. In many instances, this results in an array that is far larger than needed at the high frequency with far more elements than required for the low frequency. The high-density of elements results in a large element count which drives up array cost, complexity, and weight. In this report, the proposed cylindrical array topology extends the concept of a wavelength scaled planar array to a cylindrical array by placing elements on different lattices in different portions of the array.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 05, 2021
- Accession Number
- AD1149742
Entities
People
- Anna Stumme
- Jeffrey Coleman
- Mark Dorsey
Organizations
- United States Naval Research Laboratory