{"title":"An Inhomogeneously-Loaded Diaphragm in a Microwave Rectangular Waveguide","authors":"Abdulaziz H. Haddab, Edward F. Kuester","doi":"10.1049/mia2.70003","DOIUrl":null,"url":null,"abstract":"<p>This paper demonstrates a method to control the resonant transmission due to Fabry–Perot and Fano resonances through a dielectric-loaded slot in a thick conducting diaphragm embedded in a rectangular waveguide. It is shown that the location of these resonances can be controlled by introducing a gap of a different dielectric constant in the middle of the slot. The two kinds of resonances are adjusted to overlap, forming a complex behaviour with potential applications as a bandpass filter with a relatively narrow notch in the passband response. The theoretical projections are confirmed through both full-wave numerical simulations and experimental measurements. A new fabrication approach was used to overcome the shortcomings in construction that caused some discrepancies with the theory in a previous study.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"19 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70003","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iet Microwaves Antennas & Propagation","FirstCategoryId":"94","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1049/mia2.70003","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
This paper demonstrates a method to control the resonant transmission due to Fabry–Perot and Fano resonances through a dielectric-loaded slot in a thick conducting diaphragm embedded in a rectangular waveguide. It is shown that the location of these resonances can be controlled by introducing a gap of a different dielectric constant in the middle of the slot. The two kinds of resonances are adjusted to overlap, forming a complex behaviour with potential applications as a bandpass filter with a relatively narrow notch in the passband response. The theoretical projections are confirmed through both full-wave numerical simulations and experimental measurements. A new fabrication approach was used to overcome the shortcomings in construction that caused some discrepancies with the theory in a previous study.
期刊介绍：
Topics include, but are not limited to:
Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques.
Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas.
Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms.
Radiowave propagation at all frequencies and environments.
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