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Micromachines 2016, 7(1), 1; doi:10.3390/mi7010001

Miniature Microwave Notch Filters and Comparators Based on Transmission Lines Loaded with Stepped Impedance Resonators (SIRs)

Centre d’Investigació en Metamaterials per a la Innovació en Tecnologies Electrònica i de Comunicacions (CIMITEC), Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona), Spain
These authors contributed equally to this work.
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Author to whom correspondence should be addressed.
Academic Editor: Behraad Bahreyni
Received: 9 November 2015 / Revised: 14 December 2015 / Accepted: 19 December 2015 / Published: 23 December 2015
(This article belongs to the Special Issue Microresonators)
View Full-Text   |   Download PDF [3930 KB, uploaded 23 December 2015]   |  

Abstract

In this paper, different configurations of transmission lines loaded with stepped impedance resonators (SIRs) are reviewed. This includes microstrip lines loaded with pairs of SIRs, and coplanar waveguides (CPW) loaded with multi-section SIRs. Due to the high electric coupling between the line and the resonant elements, the structures are electrically small, i.e., dimensions are small as compared to the wavelength at the fundamental resonance. The circuit models describing these structures are discussed and validated, and the potential applications as notch filters and comparators are highlighted. View Full-Text
Keywords: stepped impedance resonator (SIR); microstrip lines; coplanar waveguides; microwave notch filter; microwave comparator stepped impedance resonator (SIR); microstrip lines; coplanar waveguides; microwave notch filter; microwave comparator
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Su, L.; Naqui, J.; Mata-Contreras, J.; Martín, F. Miniature Microwave Notch Filters and Comparators Based on Transmission Lines Loaded with Stepped Impedance Resonators (SIRs). Micromachines 2016, 7, 1.

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