- TITLE:
-
Second-Order Cone Programming for Scan-Plane
Reconstruction for the Wavelength-Scaled Array
- AUTHORS:
-
W. Mark Dorsey,
Jeffrey O. Coleman,
Rick W. Kindt, and
Rashmi Mital
- ABSTRACT:
-
The wavelength-scaled array architecture reduces the
element count in large, ultrawideband antenna arrays
by segmenting the aperture into subapertures of
varying sizes and bandwidths. This results in an
asymmetrical aperture of dissimilar elements with
associated patterns that require significant
correction. Here, we assess narrowband array
performance using its far-field pattern as obtained in
two steps. First, we characterize individual elements
using planar near-field measurements. Second, we use
second-order cone programming to optimize the complex
element weights that generate the desired individual
far-field element patterns derived from those
measurements. This document details the far-field
optimization technique, referred to here as optimized
scan-plane reconstruction, and uses it to demonstrate
that the asymmetric wavelength-scaled array can
support low global sidelobe reduction, deep localized
nulls, and/or mainbeam scanning like a conventional
symmetric array.
- ONLINE VERSIONS:
-
authors' preprint
abstract page in IEEE Xplore.
- STATUS:
- Appears in vol. 62, no. 5, May 2014 of the IEEE Transactions on Antennas and Propagation.
- DATE OF ENTRY:
-
August 2014.