Direct Coupled Resonator Filters Realized by Gap Waveguide Technology

Ahmadi, Behzad; Banai, Ali

doi:10.1109/tmtt.2015.2457916

Cited by 58 publications

(33 citation statements)

References 23 publications

(20 reference statements)

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“…Thoughtful disposition of the coupled cavities, including innovative designs such as that presented [845], where GGW cavities are vertically coupled (a distribution rather complex and prone to leakage in H-plane rectangular waveguide manufacturing) may facilitate reaching such high performance. Therefore, it seems clear that to explore the use of advanced high-performance manufacturing techniques currently available in industrial houses to GGW filters, to carry out vibration and temperature tests, and to explore advanced filter topologies with GGW (response with transmission zeros by means of cross-coupled resonators, hybrid horizontal-vertical coupling structures, etc.)…”

Section: Results In the Context Of V-band Nbfs State Of The Artmentioning

confidence: 99%

“…The periodic structures used in GW are usually neither dense, nor with a electrically small period (except some exceptional works with p ∈ [0.08λ − 0.12λ], which is in the limit to be considered a small period), in order to provide a wide stopband and an easier fabrication process. In general, larger periods are demanded [792], close to 0.35λ (see [808] or [845] for instance). Therefore, despite of the fact that this work presents a very interesting tool that has been widely used in the GW literature, it can be said that it usually results excessively rough for GW topologies.…”

Section: Modeling and Analysis Methodsmentioning

confidence: 99%

“…Despite of the rigour of the approach, the assumed homogenization limits its validity. Small circular pins (diameter d = λ/30) in sparse periodic structures are considered (ratio p/d = 7), whereas usual designs use p/w p ∈ [2, 3.5] (see for instance [812], [841] or [845]). The stopband of pin and mushroom-type periodic structures are calculated.…”

Section: Modeling and Analysis Methodsmentioning

confidence: 99%

“…To date, only the conventional all-pole Chebyshev responses have been afforded. The coupling has been classically horizontal [835]- [842], but also vertical topologies have been recently proposed [845]. Alternatively, but with less work published, notch filters by using single and dual mode cavities [846], or SSGW filters are also found [847]- [849].…”

Section: Filters and Diplexersmentioning

confidence: 99%

“…Other interesting proposal is the work in [845], in which the coupling is not horizontally done, but vertically, and both, GGW and RGW topologies are considered, see Fig. 8.…”

Section: Filters and Diplexersmentioning

confidence: 99%

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Analysis and design of efficient passive components for the millimeter-wave and THz bands

Verdú¹,

Antonio²

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To my parents, brother and sister."Success is peace of mind which is a direct result of self-satisfaction in knowing you made the effort to become the best of which you are capable."Jonh Wooden "Lo que con mucho trabajo se adquiere, más se ama." Aristóteles AgradecimientosLa realización de esta tesis ha implicado no pocos años de trabajo y esfuerzo. Durante este importante periodo de mi vida han sido muchas las personas han estado a mi lado, brindándome su apoyo, ayuda, cariño y amor. Ya sea de una forma u otra, todas estas personas han contribuido a que este trabajo haya sido posible dando como fruto esta tesis. A todos ellos, me gustaría dedicarles un agradecimiento muy especial de todo corazón.Sin duda alguna, debo dar las gracias en primer lugar a mi director de tesis Mariano Baquero. Mariano, has sido un padre para mí profesionalmente hablando. Te conocí como alumno en las clases de Microondas, en las cuales me abriste la puerta a un conocimiento que me fascinó.Recuerdo perfectamente cuando fui a verte para preguntarte si podrías dirigirme el Proyecto Final de Carrera, y desde ese año 2009 hemos estado trabajando juntos. Quiero agradecerte no sólo haberme dado la oportunidad de trabajar en cada momento en elárea que más me ha gustado, sino el haberte preocupado por mí a nivel personal, velando siempre por mis intereses, ayudándome a desarrollarme personal y profesionalmente. Extiendo en este sentido mi agradecimiento a Miguel Ferrando. Si Mariano es el padre, tu serías sin duda el abuelo. Sin tu ayuda, la beca para la realización de esta tesis y los proyectos que han respaldado la misma no hubieran sido posibles. Tu esfuerzo ha permitido que el Grupo de Radiación Electromagnética (GRE) esté hoy dónde esta y que sus miembros nos beneficiemos de un entorno de trabajo excelente, produciendo trabajo de calidad. Debo agradecerte también tus siempre innovadoras ideas, algunas de las cuales se han convertido en una realidad plasmada en esta tesis.Una mención especial merece Daniel Sánchez. Dani, aunque tu nombre no figure como co-director bien sabes que podría estarlo. Jamás podré agradecerte lo suficiente la ayuda que me has prestado. Cuántas horas dedicadas a enseñarme en un sin fin de aspectos sin esperar nada a cambio, apoyándome también en los momentos difíciles, siempre presentes en una tesis. Bien sabes que lo mismo has hecho con cada uno tus compañeros, por eso eres el pilar del GRE Dani.Otra persona a la que estoy muy agradecido es a Vicente Boria. Tu activa colaboración en la dirección de esta tesis ha sido indispensable para la consecución de los resultados más relevantes de la misma. Sugeriste muy acertadamente una estancia en la Queen's University of Belfast, y me abriste la puerta a nuevas líneas de investigación en las cuales seguimos trabajando actualmente. Gracias por preocuparte por mi a nivel profesional y personal.En elámbito anterior, extiendo los agradecimientos a todo el GRE. It is also very important for me to acknowledge Prof. Vince Fusco. Thank you for hosting me in your group in Belfast ...

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Section: Results In the Context Of V-band Nbfs State Of The Artmentioning

confidence: 99%

Section: Modeling and Analysis Methodsmentioning

confidence: 99%

Section: Modeling and Analysis Methodsmentioning

confidence: 99%

Section: Filters and Diplexersmentioning

confidence: 99%

“…Other interesting proposal is the work in [845], in which the coupling is not horizontally done, but vertically, and both, GGW and RGW topologies are considered, see Fig. 8.…”

Section: Filters and Diplexersmentioning

confidence: 99%

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Analysis and design of efficient passive components for the millimeter-wave and THz bands

Verdú¹,

Antonio²

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A new type of the air‐filled substrate integrated gap waveguide resonator

Shu

Cheng

et al. 2020

Int J RF Microw Comput Aided Eng

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This article presents the design and analysis of an air‐filled substrate integrated gap waveguide (ASIGW) resonator. The electromagnetic field of each resonant mode in the resonator is studied by theoretical modeling and EM simulation. Besides, the relationship between the dimensions and Qu is analyzed and the Qu of the resonator can be as high as 2080 at Ku band. Compared with conventional rectangular waveguide resonator and gap waveguide (GW) resonator, the proposed ASIGW resonator can be fabricated more easily. Compared with the substrate integrated waveguide resonator, the ASIGW resonator is more tolerant with dimensional errors and with less degenerate modes. As an example, a fifth‐order band‐pass filter based on the ASIGW resonators is presented to verify the previous conclusions.

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Novel compact millimeter‐wave gap waveguide filter with double‐sided selectivity

Farahani

Sadeghzadeh

2017

Micro & Optical Tech Letters

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Novel compact gap waveguide (GW) filter with negative coupling structure is proposed. GW is an attractive technology to design accurate millimeter-wave components without electrical connection. It takes advantages of high Q-factor, low loss, capability of integration with MMICs and multilayer implementation. GW features with stacked and negative coupling topology are effectively employed here to bring a high performance interconnect, miniaturized and cost-effective filter. A fourth-order Ka-band filter with two prescribed symmetric transmission zeros is designed and fabricated based on the groove GW platform. The simulation and measurement results verify the validity of the method and exhibit high double-sided selectivity.filter, groove gap waveguide resonator, high performance, negative coupling structure, transmission zeros | I NT ROD UCTI ONEfficient utilization of RF power and frequency spectrum as well as total size reduction are important challenges in the design of modern RF systems. Filter with prescribed transmission zeros (TZs) is an effective component in the most wireless and satellite communication systems where high performance Filter for efficient utilization of power and spectrum as well as compact size is required. Filters with TZs have the ability to well compromising between the maximum possible close-to-band rejection, high selectivity and at the same time minimum number of resonators, which in turn, effectively reduce the total size and insertion loss.

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Direct Coupled Resonator Filters Realized by Gap Waveguide Technology

Cited by 58 publications

References 23 publications

Analysis and design of efficient passive components for the millimeter-wave and THz bands

Analysis and design of efficient passive components for the millimeter-wave and THz bands

A new type of the air‐filled substrate integrated gap waveguide resonator

Novel compact millimeter‐wave gap waveguide filter with double‐sided selectivity

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