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

Micromachines

Lijuan Su¹  Jordi Naqui¹  Javier Mata-Contreras²  Ferran Martín² 

[1] 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

关键词: stepped impedance resonator (SIR);    microstrip lines;    coplanar waveguides;    microwave notch filter;    microwave comparator;   

DOI  :  10.3390/mi7010001

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.