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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Qi Wu Werner, D.H. Werner, P.L. Lier, E. |
| Copyright Year | 2010 |
| Description | Author affiliation: Lockheed Martin Commercial Space Systems, 100 Campus Drive, Newtown, PA 18940 (Lier, E.) || Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA (Qi Wu; Werner, D.H.; Werner, P.L.) |
| Abstract | Hybrid-mode horns such as corrugated horns, strip loaded horns and dielectric loaded horns have been used for satellite antennas due to their low cross-polarized radiation [1]-[3]. Furthermore, horns that support the balanced hybrid-mode can behave as either soft or hard horns, providing low sidelobes or high aperture efficiency [4]-[5]. Although corrugated horns have found wide use in satellite antennas, dielectric loaded horns are less desirable because of their higher mass, dielectric losses, and limited bandwidth. Recently, a metamaterial-based hybrid-mode horn design was proposed, where a metamaterial liner with dielectric constant less than unity was placed on the wall of the horn [6]. It promises improved bandwidth as well as low manufacturing costs. In fact, metamaterials can exhibit a much broader range of electromagnetic properties, such as a negative or near zero index of refraction [7]. In this work, a magneto-dielectric metamaterial liner with low refractive index was used to realize hybrid-mode horns. This paper provides metamaterial design principles and the expressions needed for hybrid-mode operation, as well as examples of conical horn antennas with metamaterial coatings that exhibit low cross-polarized radiation. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 3951996 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424449675 |
| ISSN | 15223965 |
| DOI | 10.1109/APS.2010.5561665 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-07-11 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Metamaterials Horn antennas Surface impedance Magnetic materials Surface waves Indexes |
| Content Type | Text |
| Resource Type | Article |
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