Array Antenna Limitations
Abstract
This letter defines a physical bound based array figure of merit that provides a tool to compare the performance of both single and multi-band array antennas with respect to return-loss, thickness of the array over the ground-plane, and scan-range. The result is based on a sum-rule result of Rozanov-type for linear polarization. For single-band antennas it extends an existing limit for a given fixed scan-angle to include the whole scan-range of the array, as well as the unit-cell structure in the bound. The letter ends with an investigation of the array figure of merit for some wideband and/or wide-scan antennas with linear polarization. We find arrays with a figure of merit >0.6 that empirically defines high-performance antennas with respect to this measure.
Cite
@article{arxiv.1307.2925,
title = {Array Antenna Limitations},
author = {B. L. G. Jonsson and C. I. Kolitsidas and N. Hussain},
journal= {arXiv preprint arXiv:1307.2925},
year = {2015}
}
Comments
Minor changes. Included a pre-page to comply with Journal requirements. Added a few more antennas for which we calculated the array figure of merit