RT Journal Article
T1 Microwave Tunable Notch Filter Based on Liquid Crystal Using Spiral Spurline Technology
A1 Torrecilla Rosell, Javier
A1 Avila Navarro, E
A1 Urruchi del Pozo, Virginia
A1 Sánchez-Pena, José Manuel
A1 Arias, Julia
A1 Sánchez López, María M.
A1 Marcos Lucas, Carlos
AB In this article, the design, fabrication, and characterization of a tunable microwave notch filter based on liquid crystal (LC) using inverted-microstrip technology is presented. A spiral spurline structure is used because of its good performance as a single-resonator notch filter. Based on the LC dielectric anisotropy, a voltage-controlled rejection frequency of the filter is achieved, ranging from 3.40 to 3.75 GHz, which means that the tuning range relative to the central rejection frequency is about 10%. At the same time, this device exhibits negative group delay around the rejection frequency and the measured values throughout the tuning frequency range are presented.
PB Wiley
SN 0895-2477
YR 2013
FD 2013-10
LK https://hdl.handle.net/10016/19465
UL https://hdl.handle.net/10016/19465
LA eng
NO J. A. and M.M.S.L. acknowledge funding support from the Spanish Ministerio de Economia y Competitividad through project FIS2012-39158-C02-02. J. T., C. M., V. U. and J. M. S. P. thank funding support from the Spanish Ministerio de Economia y Competitividad (grant no. TEC2009–13991-C02-01) and Comunidad de Madrid (grant no. FACTOTEM S2009/ESP/1781).
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RD 24 jun. 2024