Peak and Average Power Handling Capability of Microstrip Filters

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Title: Peak and Average Power Handling Capability of Microstrip Filters
Authors: Sánchez-Soriano, Miguel Ángel | Queré, Yves | Le Saux, Vincent | Marini, Stephan | Reglero, Marta | Boria Esbert, Vicente Enrique | Quendo, Cédric
Research Group/s: Grupo de Microondas y Electromagnetismo Computacional Aplicado (GMECA)
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal
Keywords: Average power handling capability (APHC) | Coupled-line filter | Electro-thermal analysis | Microstrip filter | Peak power handling capability (PPHC) | Power applications | Stepped impedance resonator (SIR)
Knowledge Area: Teoría de la Señal y Comunicaciones
Issue Date: 13-Jun-2019
Publisher: IEEE
Citation: IEEE Transactions on Microwave Theory and Techniques. 2019, 67(8): 3436-3448. doi:10.1109/TMTT.2019.2919509
Abstract: In this work, the power handling capability of microstrip filters is studied in detail. This study is addressed from two perspectives, depending on the physical phenomenon limiting the maximum power that the microstrip filter can handle. One of these phenomena is air breakdown or corona effect, which is linked to the peak power handling capability (PPHC) of the device, and the other is the self-heating, which limits the device average power handling capability (APHC). The analysis is focused on three kinds of filtering topologies widely used both in academia and industry, such as the coupled-line, stepped impedance resonator and the dual-behaviour resonator based filters. Closed-form expressions are computed to predict both the PPHC and the APHC as a function of the geometrical parameters of the resonators integrating the filter. Guidelines are also given to extrapolate the provided computations to other filtering topologies based on other kinds of resonators. To validate this research study, three bandpass filters centered at 5 GHz have been implemented and fully characterized by means of two measurements campaigns which have been carried out, one for the PPHC and another one for the APHC. The measured results have validated the performed study and corroborated the conclusions obtained throughout the paper.
Sponsor: This work was supported by the “Agencia Estatal de Investigación (AEI)”, under the coordinated research project TEC2016-75934-C4, by the University of Alicante under the research project GRE16-17 and by the Generalitat Valenciana under the research project GVA/2018/071.
ISSN: 0018-9480 (Print) | 1557-9670 (Online)
DOI: 10.1109/TMTT.2019.2919509
Language: eng
Type: info:eu-repo/semantics/preprint
Rights: © 2019 IEEE
Peer Review: si
Publisher version:
Appears in Collections:INV - GMECA - Artículos de Revistas

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