Wide angle impedance matching metamaterials for waveguide-fed phased-array antennas
This work investigates the gains realisable through the use of artificially structured materials, otherwise known as metamaterials, in the wide angle impedance matching (WAIM) of waveguide-fed phased-array antennas. The authors propose that the anisotropic properties of a metamaterial layer, when designed appropriately, can be employed to achieve impedance matching at a wide contiguous range of phased-array antenna transmission angles. Simulation and numerical results show that an optimised impedance match over a broad angular range can be readily achieved using a doubly uniaxial (magnetic and electric) anisotropic layer, an outcome not found accomplishable when an optimised isotropic dielectric layer is used. The authors propose the possibility of using metamaterials to achieve anisotropic WAIM layer configurations, and the authors show, using two simple uniaxial designs, that a metamaterial layer over the phased-array gives performance characteristics similar to its homogeneous anisotropic effective medium counterpart. © 2010 The Institution of Engineering and Technology.
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- Networking & Telecommunications
- 4009 Electronics, sensors and digital hardware
- 4008 Electrical engineering
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- 1005 Communications Technologies
- 0906 Electrical and Electronic Engineering
Citation
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Networking & Telecommunications
- 4009 Electronics, sensors and digital hardware
- 4008 Electrical engineering
- 4006 Communications engineering
- 1005 Communications Technologies
- 0906 Electrical and Electronic Engineering