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Miniature Microwave Notch Filters and Comparators Based on Transmission Lines Loaded with Stepped Impedance Resonators (SIRs) Su, Lijuan Naqui Garolera, Jordi Mata Contreras, Francisco Javier Martín, Ferran Stepped impedance resonator (SIR) Microstrip lines Coplanar waveguides Microwave notch filter Microwave comparator 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. 2016 Article https://ddd.uab.cat/record/146040 urn:10.3390/mi7010001 urn:oai:ddd.uab.cat:146040 urn:pmid:30407374 urn:scopus_id:84957960225 urn:wos_id:000369503400003 urn:oai:egreta.uab.cat:publications/f59b11d0-bb64-4186-b525-541f92eaf4df urn:pmc-uid:6189726 urn:pmcid:PMC6189726 urn:oai:pubmedcentral.nih.gov:6189726 eng Micromachines ; Vol. 7 Núm. 1 (2016), p. 1-10 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by/3.0/ application/pdf