Abstract
The Transformation Optics (TO) design methodology allows for unprecedented control over wave behavior when coupled with advanced metamaterial technology [1,2]. The ubiquitous application of TO is the optical cloak of invisibility [1,2], but sub-wavelength hyperlenses and far-field collimating flat lenses [3-7] have also received a lot of attention due to their many possible practical applications. In addition, this class of TO devices tends to have a higher tolerance for dispersive, narrowband metamaterial properties. Most TO-derived devices require complicated material parameters for implementation [3-6], but choosing a conformal mapping as the transformation can greatly simplify the resulting material specifications [7]. It is shown here that a far-field collimating quadbeam lens derived from a conformal mapping can be implemented by a simple uniaxial homogeneous metamaterial. Full-wave simulations demonstrate the lens performance under excitation by a line current source. Moreover, a tunable metamaterial design for a TE-mode device is introduced along with simulation results showing the capability for beam scanning through electrical tuning of the metamaterial.
Original language | English (US) |
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Title of host publication | 2010 IEEE International Symposium on Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting - Leading the Wave, AP-S/URSI 2010 |
DOIs | |
State | Published - 2010 |
Event | 2010 IEEE International Symposium on Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting - Leading the Wave, AP-S/URSI 2010 - Toronto, ON, Canada Duration: Jul 11 2010 → Jul 17 2010 |
Other
Other | 2010 IEEE International Symposium on Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting - Leading the Wave, AP-S/URSI 2010 |
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Country/Territory | Canada |
City | Toronto, ON |
Period | 7/11/10 → 7/17/10 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Hardware and Architecture