Dimensional synthesis for wideband waveguide filters

Vanin, F.M.; Schmitt, Dirk-Roger; Levy, R.

doi:10.1109/mwsym.2004.1336011

Cited by 13 publications

(14 citation statements)

References 3 publications

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“…With Chebyshev response, [6] for the desired bandwidth, the ripple in the pass band and the rejection, we found that the filter must be of the forth degree at least. The n× coupling matrix cannot be used to derive the responses [8]. the following steps.…”

Section: Application Of the Design Methodsmentioning

confidence: 99%

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Design and Optimization of Rectangular Waveguide Filter based on Direct Coupled Resonators

Damou¹,

Nouri²,

Feham³

et al. 2017

International Journal of Electronics and Telecommunications

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Abstract-The waveguide filter structure is treated by two softwares (HFSS (High Frequency Structure Simulator) and CST (Computer Simulation Technology)). Numerical example is given in this article to demonstrate, step by step, the application of the approach to the design of resonator, direct coupled waveguide and microstrip filters based on electromagnetic (EM) simulations. For this design procedure, the filter structure is simulated by successively adding one resonator at a time. To continue the work illustrates how to design a fourth order coupled resonator based rectangular waveguide circuit in the traditional way. With a large number of variables, such tuning work consumes a lot of time and the convergence of the final result is not guaranteed. A fourth order X-band bandpass filter with a center frequency of 11 GHz and a fractional bandwidth FBW = 0,0273 is designed using this procedure and presented here as an example. The simulated results by CST are presented and compared withthe results simulated by a high-frequency structure simulator. Good agreement between the simulated HFSSand simulated results by CST is observed.

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Section: Application Of the Design Methodsmentioning

confidence: 99%

“…2(a)]. Use the simulator (in our case, lwave wizard [8]) to evaluate resonator 1 together with its two adjacent irises, and optimize this simulated response toward the desired one from coupling matrix, by changing the resonator length (l1) and iris dimensions (d01 and d12). 3.…”

Section: Application Of the Design Methodsmentioning

confidence: 99%

Design and Optimization of Rectangular Waveguide Filter based on Direct Coupled Resonators

Damou¹,

Nouri²,

Feham³

et al. 2017

International Journal of Electronics and Telecommunications

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“…filters), and to experimentally prove the validity of the theory. In order to design such devices, like bandpass filters, existing design synthesis methods [53,54] have to be adapted and extended to allow arbitrary wedge-shaped geometries. Manufacturing aspects must also be taken into account, since an increase in the geometry complexity infers an increase in the costs and eventually the need of new milling equipment.…”

Section: Objectives and Challengesmentioning

confidence: 99%

“…4.6). The design algorithm has been further improved through the years in order to correct inaccuracies, avoid the need of a final optimisation step, and extend its validity to wide-band designs [53,54,73,74].…”

Section: Design Proceduresmentioning

confidence: 99%

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Analysis of wedge-shaped waveguides and design of multipactor-resistant microwave bandpass filters. Análisis de guías de onda en forma de cuña y diseño de filtros de microondas paso-banda resistentes al efecto multipactor.

González¹

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AgradecimientosEchando la vista atrás, parece que fue ayer cuando presenté mi proyecto fin de carrera, allá por finales de 2002. Pero ha pasado mucho tiempo, y puedo decir que han sido los años más apasionantes de mi vida. Los lugares que he recorrido, las personas que he encontrado en el camino, las alegrías y las penas, lo que ha cambiado y lo que sigue igual, todo viene a la mente al escribir estas líneas, como si mi tesis doctoral hubiera sido una fiel acompañante, un testigo mudo de lo sucedido en este periodo. Y ahora que este proyecto se acerca a su culminación, es de justicia acordarse de todos los que han compartido una parte o todo el camino, y que en cierta medida han hecho posible el resultado final.En primer lugar quisiera agradecer a mis directores de tesis, Vicente y Benito. Me han apoyado con paciencia desde el principio, a pesar de estar a distancia la mayor parte del tiempo, ayudándome a superar los momentos más difíciles, que siempre aparecen en los proyectos importantes. También me gustaría nombrar a mis compañeros de las universidades de Valencia, que han aportado mucho al trabajo: Carlos, Antonio María, Mariam, Stephan, Jordi, Sergio. Desde Holanda, mis supervisores en la Agencia Espacial Europea, David y Dietmar, me abrieron los ojos y me impulsaron hacia delante. Mis jefes del Centro Aeroespacial Alemán en Munich, Manfred y Marco, apostaron por mí y me permitieron participar en las misiones radar en satélite más punteras, TerraSAR-X, TanDEM-X y Sentinel-1. Del mismo modo, no dudaron en darme facilidades para continuar en paralelo mis investigaciones para la tesis.Todos los doctorandos sabemos que escribir una tesis te deja un poco "tocado del ala". En mi caso, mi mujer Cécile, con su amor y comprensión, ha sido mi referencia y mi ilusión en estos años de electrones rebeldes. Mis padres, José Luis y Marián, y mis hermanos, Andrés y Fernando, han estado siempre ahí cuando les he necesitado, lo cual a veces damos equivocadamente por sentado. No hay palabras que puedan expresar el agradecimiento que os debo a todos. Porúltimo, me gustaría dedicar también esta tesis a mis abuelos, Emilia, Abilio, Begoña y Jaime, porque sé que la culminación de este reto les hace igual o más felices que a mí. Jaime Hueso González ResumenEl efecto multipactor de ruptura en RF ha sido objeto de numerosos estudios desde hace más de 80 años, a partir del desarrollo de los primeros aceleradores de partículas en la primera mitad del siglo XX. A mediados de ese siglo, con el desarrollo de fuentes de alta potencia para aplicaciones radar y la llegada de los satélites artificiales, la investigación del multipactor cobró una considerable relevancia, al convertirse este fenómeno en un riesgo determinante para costosos proyectos comerciales. Las guías de onda con secciones rectas canónicas, como las rectangulares o las coaxiales, han sido tradicionalmente las más utilizadas en dispositivos de microondas. Sus principales ventajas son que sus campos electromagnéticos pueden resolverse analíticamente, lo que permite su aplica...

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The design of waveguide filters based on cross‐coupled resonators

Shang

Xia

Lancaster

2013

Micro & Optical Tech Letters

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In this article, two novel microstrip band-stop filters using the gradually variational stepped impedance hairpin resonator with DGS or not are presented. By using the gradually variational stepped impedance hairpin resonator, the filters have remarkable advantages, such as compact size, simple structure, and high selectivity. Two band-stop filters are designed, fabricated, and measured. The measurement results show good agreement with the simulation ones. ACKNOWLEDGMENTSThis work was supported by National Natural Science Foundation of China under Grant 61171051. The authors would like to thank the persons in Agilent Open Laboratory in Beijing, for their technical assistance. ABSTRACT: This article addresses the physical realization of crosscoupled waveguide filters based on electromagnetic (EM) simulations. For this design procedure, the filter structure is simulated by successively adding one resonator at a time. The desired filter response is achieved without the need of a global optimisation on all the mechanical dimensions within an EM simulator. This reduces the design time required for a crosscoupled waveguide filter and allows the possibility of building high-order waveguide filters with complex crosscouplings. A sixth order X-band dual-band filter with a center frequency of 10 GHz and a fractional bandwidth of 1% is designed using this procedure and presented here as an example. Excellent agreement between simulation results and theoretical results from coupling matrix verifies the proposed approach. THE DESIGN OF WAVEGUIDE FILTERS BASED ON CROSS-COUPLED RESONATORS

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Dimensional synthesis for wideband waveguide filters

Cited by 13 publications

References 3 publications

Design and Optimization of Rectangular Waveguide Filter based on Direct Coupled Resonators

Design and Optimization of Rectangular Waveguide Filter based on Direct Coupled Resonators

Analysis of wedge-shaped waveguides and design of multipactor-resistant microwave bandpass filters. Análisis de guías de onda en forma de cuña y diseño de filtros de microondas paso-banda resistentes al efecto multipactor.

The design of waveguide filters based on cross‐coupled resonators

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