Liquid crystal based Rotman lens antenna with switchable monopulse patterns
| Autor: | Robert Cahill, Y. Munro, Steven Christie, Atsutaka Manabe, Neil Mitchell |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Reconfigurable antenna
Engineering Frequency band business.industry Phase (waves) Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Lens (optics) Optics Monopulse radar law Electrical and Electronic Engineering Antenna (radio) business Vivaldi antenna Microwave |
| Zdroj: | BASE-Bielefeld Academic Search Engine |
| ISSN: | 0895-2477 |
| DOI: | 10.1002/mop.27919 |
| Popis: | An electronically reconfigurable Rotman lens is described which generates multiple beams that can be switched from monopulse sum to difference radiation patterns when used in conjunction with a six element Vivaldi antenna array. This is achieved by exploiting the voltage-dependent dielectric anisotropy property of nematic state liquid crystals to provide switched 0° and 180° phase shifts in the array feed lines. The viability of the concept is demonstrated by designing an antenna which exhibits dynamically reconfigurable monopulse radiation patterns over the frequency band 6–10 GHz. Measured and simulated results are shown to be in good agreement. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2721–2726, 2013 |
| Databáze: | OpenAIRE |
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