Direct-Coupled Cavity Filter in Ridge Gap Waveguide

Sorkherizi, Milad Sharifi; Khaleghi, Ali; Kildal, Per-Simon

doi:10.1109/tcpmt.2013.2284559

Cited by 51 publications

(21 citation statements)

References 17 publications

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“…By applying the proposed PSO algorithm, in an iteration, the velocity and position of every particle is updated according to (1) and (2), the coordinates of the resonant cavity is calculated based on (6)- (15), and the fitness function is calculated based on (3). The optimized result is illustrated in Table 3.…”

Section: Resultsmentioning

confidence: 99%

“…_ g best is the position achieved so far by all the particles. 1 C and 2 C are cognition and social components, respectively, and they are acceleration constants for changing the velocities of particles towards p_best and g_best. The above described algorithm is illustrated in Fig.2.…”

Section: Proposed Particle Swarm Optimization Algorithmmentioning

confidence: 99%

“…A direct coupled cavity filter [1] and mixed coupling [2] can be used. Tunable bandwidth and adjustable transmission zeros location can be realized by appropriate choosing coupling coefficients [3].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Single Channel Cavity Filter by Particle Swarm Optimization

ZHANG¹,

ZHANG²

2017

dtetr

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Abstract. This paper proposes a novel optimization approach to optimization of single channel cavity filter. The design principle of coaxial-cavity resonant filter is shown given band pass character of the filter. The characteristic of cavity filter is represented by the coupling distance constraint matrix of the cascading coaxial-cavity resonator. Particle swarm optimization algorithm is presented and the process of using it to optimize single channel coaxial-cavity resonator is proposed. In the optimization process, the objective is to minimize the volume of the cubic encircling the cavities subject to the constraint of coupling distance matrix. The number of parameter for a particle is determined based on the coupling distance constraint matrix. The optimization process is elaborated and optimized result is given. This method can find the desired result with 20 iterations.

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Section: Resultsmentioning

confidence: 99%

Section: Proposed Particle Swarm Optimization Algorithmmentioning

confidence: 99%

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Optimization of Single Channel Cavity Filter by Particle Swarm Optimization

ZHANG¹,

ZHANG²

2017

dtetr

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“…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%

“…Finally, some alternative topologies are reviewed. In [846], single and dual mode cavities are created by defecting the pin structure of a RGW. The single mode cavity is created by placing a dielectric pin instead of a metallic one at a certain position of the first row, whereas the dual mode cavity is created by removing two adjacent pins inside of the periodic structure.…”

Section: Filters and Diplexersmentioning

confidence: 99%

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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Design of Ku‐band diplexer based on groove gap waveguide technology

Zarifi

Shater

Ashrafian

et al. 2018

Int J RF Microw Comput Aided Eng

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A groove gap waveguide diplexer is presented for Ku‐band applications. The manifest advantage of using this technology is its ability to remove requirement of electrical contact between the different layers of the structure. The proposed diplexer is composed of coupled gap waveguide resonators without additional waveguide elements. A prototype is fabricated and measured for experimental verification. The return losses of the channel filters of diplexer are higher than about 20 dB, in the desired frequency bands centered 14 and 15.5 GHz. A high degree of agreement between the measurements and simulations has been found.

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Direct-Coupled Cavity Filter in Ridge Gap Waveguide

Cited by 51 publications

References 17 publications

Optimization of Single Channel Cavity Filter by Particle Swarm Optimization

Optimization of Single Channel Cavity Filter by Particle Swarm Optimization

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

Design of Ku‐band diplexer based on groove gap waveguide technology

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