Novel miniaturized ring resonator and metamaterial filters for UHF applications
Emerging applications such as wireless communications continue to challenge RF/microwave filters with ever more stringent requirements as: smaller size, lighter weight, and lower cost. Ring resonators have been widely studied in the literature of filter applications because they are cheap and of eas...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2010 |
| País: | México |
| Institución: | Instituto Nacional de Astrofísica, Óptica y Electrónica |
| Repositorio: | Repositorio Institucional del INAOE |
| Idioma: | inglés |
| OAI Identifier: | oai:inaoe.repositorioinstitucional.mx:1009/577 |
| Acceso en línea: | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/577 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/Filtros/Filters info:eu-repo/classification/Resonadores/Resonators info:eu-repo/classification/Líneas de transmisión/Transmission lines info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/22 info:eu-repo/classification/cti/2203 |
| Sumario: | Emerging applications such as wireless communications continue to challenge RF/microwave filters with ever more stringent requirements as: smaller size, lighter weight, and lower cost. Ring resonators have been widely studied in the literature of filter applications because they are cheap and of easy fabrication. Due to the large size of these resonators, various techniques have been suggested in the literature to achieve miniaturization. Two main parameters which affect the frequency response of the ring resonators are the differences in the substrate’s thickness and tolerances in the dielectric constant of the substrate. A new miniaturization technique is introduced in this thesis. This novel technique is based on the use of vias to ground and interdigital capacitors. Vias to ground allow size reduction and eliminate harmonics. The addition of the interdigital capacitor to the electromagnetic structure greatly reduces the sensitivity to substrate thickness. The resulting resonators are highly miniaturized, cheap, of easy fabrication, of low sensibility to differences in the substrate’s thickness, and independent of the excitation orientation. Ultra High Frequency filters based on these novel electromagnetic ring resonant structures are presented. The growth of interest in metamaterials has recently led to novel and interesting theoretical possibilities for microwave, infrared and optical applications. One advantage of metamaterial structures is the size reduction. In this thesis, the design of a metamaterial (MTM) transmission line based on the negative magnetic coupling using the planar technology is presented. A spiral inductor and interdigital capacitor are used as basic elements to realize the MTM transmission line. Simulations are done using the full-wave simulator SONNET and measurements are perform using the Agilent PNA series microwave vector network analyzer (E8361A). |
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