Enabling electromagnetic applications of negative-refractive-index transmission-line metamaterials part II
AuthorEleftheriades, G. V.
Antoniades, Marcos A.
PublisherInstitute of Electrical and Electronics Engineers Inc.
SourceAntem/URSI 2004 - 10th International Symposium on Antenna Technology and Applied Electromagnetics and URSI Conference, Proceedings
Antem/URSI 2004 - 10th International Symposium on Antenna Technology and Applied Electromagnetics and URSI Conference, Proceedings
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The 1-Dimensional (1-D) metamaterial phase-shifting lines presented in  can be used to develop compact and broadband, non-radiating, metamaterial feed-networks for antenna arrays. These can be used to replace conventional TL-based feed-networks, which can be bulky and narrowband. For series-fed arrays, the proposed metamaterial feed-networks have the advantage of being compact in size, therefore eliminating the need for conventional TL meander lines. In addition, the metamaterial feed-networks are more broadband when compared to conventional TL feed-networks, which enables series-fed broadside arrays to experience less beam squint when operated away from the design frequency. For parallel-fed arrays, the proposed metamaterial feed-networks have the potential to significantly reduce the size of the feed networks by completely collapsing the traditionally used TL-based binary tree feed-network. © 2004 IEEE.