Design Procedure for Bandpass Filters Based on Integrated Coaxial and Rectangular Waveguide Resonators

Blas, Á.A. San; Guglielmi, M.; Melgarejo, Juan Carlos; Coves, Á.; Boria, Vicente E.

doi:10.1109/tmtt.2020.3011434

Cited by 24 publications

(15 citation statements)

References 26 publications

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“…As we can see, the performance that we have obtained is good but is not in perfect agreement with the simulations. Further investigations indicated that this disagreement is due to the dimensional errors introduced by the manufacturing process, in particular, with respect to the input and output couplings [22]. Our tuning procedure, however, was able to obtain, with a very reasonable effort, the best possible performance that the hardware could give.…”

Section: A Knowledge-based Approachmentioning

confidence: 91%

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Space mapping filter design and tuning techniques

Melgarejo

Ossorio

Blas

et al. 2021

Int. J. Microw. Wireless Technol.

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A common strategy to reduce the cost of a filter is to use a manufacturing technique with an intermediate accuracy and use tuning elements to compensate for the manufacturing errors. However, including tuning elements in the final EM simulations, and tuning the filters after manufacturing, can be quite challenging. In this context, therefore, we review in this paper two powerful filter design procedures based on Aggressive Space Mapping (ASM), and two semi-automatic tuning techniques. As a validation, we describe in detail the design and tuning of two types of filters that are commonly used for both space and ground applications, namely, a six-pole inductive filter in rectangular waveguide, and a more complex five-pole filter based on dual-mode resonators.

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Section: A Knowledge-based Approachmentioning

confidence: 91%

“…The second application example that we discuss is a more complex five-pole dual-mode filter [22]. The dual mode resonator exploits the resonance of a metallic post, together with the resonance of the rectangular cavity that contains the post.…”

Section: Dual-mode Filtermentioning

confidence: 99%

Space mapping filter design and tuning techniques

Melgarejo

Ossorio

Blas

et al. 2021

Int. J. Microw. Wireless Technol.

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“…The last case study is a symmetric 5-pole band-pass filter based on dual-mode coaxial resonators [85]. Fig 3.…”

Section: Design Of a 5-pole Filter Based On Dual-mode Coaxial Resonatorsmentioning

confidence: 99%

“…This is because the first cavity already includes six out of the eight design variables. One possibility to further simplify the design process could be to follow the procedure that was used originally in [85], namely:…”

Section: Step-by-step Asmmentioning

confidence: 99%

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Advanced Techniques for the Design and Optimization of Multi-Band and Reconfigurable Microwave Waveguide Filters

Lermas¹

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El creciente número de dispositivos intercambiando datos ha empujado a las empresas del sector espacial a utilizar bandas de frecuencia cada vez más altas, como Ku, K y Ka, ya que permiten emplear canales de frecuencia más anchos. A medida que disminuye la longitud de onda, el tamaño de los filtros se reduce y, por tanto, son más sensibles a las desviaciones de fabricación. Para compensar estos errores, es necesario emplear elementos de sintonía en la etapa de diseño.En este contexto presentamos una estrategia de diseño que permite incluir todos los factores no ideales, como elementos de sintonía o esquinas redondeadas, en las simulaciones finales de filtros y multiplexores.Una vez se han fabricado los filtros es necesario ajustar manualmente los elementos de sintonía hasta recuperar la respuesta objetivo. Sin embargo, para realizar esta tarea con éxito es necesario tener mucha experiencia previa y, aún así, conlleva un tiempo considerable. Por tanto, también proponemos un procedimiento de sintonización eficiente y sistemático que permite a cualquier persona, independientemente de su experiencia previa en sintonización, realizar esta tarea con éxito.Además del aumento de las tasas de transmisión, otros desafíos del sector espacial son reducir el tamaño y peso de sus componentes, así como dotarlos de capacidad de reconfiguración. Emplear dispositivos multifunción como filtros multibanda o dispositivos reconfigurables es una posible solución. En este contexto, proponemos una nueva familia de filtros multibanda en guía de ondas que puede adaptarse a las futuras necesidades del sector espacial. Con el mismo objetivo, también proponemos una familia de dispositivos reconfigurables de varios estados discretos que pueden modificar su comportamiento de forma remota. v ResumEl creixent nombre de dispositius intercanviant dades ha empés a les empreses del sector espacial a utilitzar bandes de freqüència cada vegada més altes, com Ku, K i Ka, ja que permeten fer servir canals de freqüència més amples. A mesura que la longitud d'ona disminueix, la mida dels filtres es redueix i, per tant, són més sensibles a les desviacions de fabricació. Per compensar aquests errors, és necessari fer servir elements de sintonia en l'etapa de disseny.En aquest context presentem una estratègia de disseny que permet incloure tots els factors no ideals, com a elements de sintonia o cantonades arrodonides, en les simulacions finals de filtres i multiplexors.Una vegada s'han fabricat els filtres és necessari ajustar manualment els elements de sintonia fins a recuperar la resposta objectiu. Però, per realitzar aquesta tasca amb èxit és necessari tenir molta experiència prèvia i, així i tot, comporta un temps considerable. Per tant, també proposem un procediment de sintonització eficient i sistemàtic que permet a qualsevol persona, independentment de la seua experiència prèvia en sintonització, realitzar aquesta tasca amb èxit.A més de l'augment de les taxes de transmissió, altres desafiaments de el sector espacial són reduir la mida i pes dels seus...

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Implementation of left handed transmission lines based on waveguide TM modes

Zhang

Dong

Jia

et al. 2021

Micro & Optical Tech Letters

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In this article, a novel left‐handed (LH) waveguide transmission line with good filtering performance is proposed and implemented below the TM mode cutoff frequency. TM11 mode is employed and transmitted inside the waveguide. The LH passband is achieved by TM mode cutoff operation and complementary split‐ring resonator (CSRR) loading, which are able to provide negative μ and ε, respectively. It constitutes the main novelty here with the rectangular waveguide TM mode and CSRR to realize the LH characteristics, which has not been done before. Based on this passband, two bandpass filters with high‐selectivity are designed and fabricated. The measured results are in agreement with the simulated data. It shows a good LH passband below the cut‐off frequency and TM11 mode propagation is also detected at higher frequency above the cutoff.

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Design Procedure for Bandpass Filters Based on Integrated Coaxial and Rectangular Waveguide Resonators

Cited by 24 publications

References 26 publications

Space mapping filter design and tuning techniques

Space mapping filter design and tuning techniques

Advanced Techniques for the Design and Optimization of Multi-Band and Reconfigurable Microwave Waveguide Filters

Implementation of left handed transmission lines based on waveguide TM modes

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