Power-Handling Considerations of Narrowband Second-Order Absorptive and Reflective Bandstop Filters

IF 4.1 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-09 DOI:10.1109/TMTT.2024.3468342

Pintu Adhikari;Mohammad Abu Khater;Michael D. Sinanis;Sten E. Gunnarsson;Miguel A. Sanchez-Soriano;Mattias Thorsell;Dimitrios Peroulis

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Abstract

This article compares the power-handling capabilities of narrowband second-order absorptive bandstop and reflective bandstop filters (BSFs) that have not been explored previously. The analysis considers two distinct perspectives: the maximum voltage and current that each filter can handle, as well as the average power dissipation. Both electrical and electrothermal analyses are conducted. Closed-form expressions are derived for the second-order absorptive and reflective BSF (RBSF) topologies, delineating voltage and power distribution among their resonators as a function of input power. Two second-order microstrip filters with lumped components are designed, fabricated, and measured to validate the analyses. These filters, centered at 500 MHz, are tailored specifically for direct, nonloading voltage measurement using an oscilloscope. Thermal profile measurements are also taken using an infrared (IR) camera, confirming theoretical trends that the absorptive BSF (ABSF) has a higher average power-handling capability (PHC) compared to the RBSF.

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来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.