Note: tunable notch filter based on liquid crystal technology for microwave applications
| Autor: | K. Garbat, Virginia Urruchi, José Manuel Sánchez-Pena, J. Torrecilla, Carlos Marcos |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Materials science
Radiowave and microwave technology business.industry Liquid crystals Band-stop filter Liquid crystal devices Filter (video) Liquid crystal Low-power electronics Notch filters Permittivity Telecommunications Liquid crystal tunable filter Anisotropy Optoelectronics Electrónica Liquid dielectrics Center frequency Microwaves Materials properties business Instrumentation Microwave Óptica Electronic circuit |
| Zdroj: | e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid instname |
| ISSN: | 1089-7623 |
| Popis: | Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Review of Scientific Instruments (2013), 84 (2). and may be found at http://dx.doi.org/10.1063/1.4790555 In this work, a compact design of an electrically tunable notch filter, based on liquid crystal (LC) technology, has been designed, manufactured, and characterized. The proposal has been achieved through particular configuration schemes with low cost inverted-microstrip structures and conventional spurlines structures due to its ease of integration. Central frequency tunability has been induced by applying low ac voltages, thus involving low power consumption. For these devices, filter responses have been approached specifically at microwave C-band frequency allocated for many satellite communications applications. Also, it has taken advantage of new highly anisotropic nematic LC mixtures at those frequency ranges. Financial support of the Spanish Ministry of Science and Innovation, Grant No. TEC2009-13991-C02-01, and Comunidad de Madrid, Project No. FACTOTEM2 S2009/ESP-1781. Publicado |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|