p-i-n-Diode-Based Four-Channel Switched Filter Bank With Low-Power TTL-Compatible Driver

Gentili, Fabrizio; Urbani, Laura; Bianchi, G.; Pelliccia, Luca; Sorrentino, R.

doi:10.1109/tmtt.2014.2364216

Cited by 10 publications

(5 citation statements)

References 7 publications

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“…These filter banks demonstrated incorporate tuning/switching elements positioned either before multiple channels (switched multiplexer design) or within each filter inside a band (tunable BPF design). [5][6][7][8] However, all the aforementioned switching technologies require complex biasing circuitry for their operation. This unavoidably introduces performance challenges due to parasitic effects from the bias circuitry, while also posing difficulties in circuit design, integration, and fabrication.…”

Section: Introductionmentioning

confidence: 99%

“…These BPF elements collectively serve to divide the input signal into multiple components, each singularly containing a distinct frequency sub-band derived from the original signal, offering the potential to greatly reduce system complexity and enable multifunctionality. 4 As a consequence, a range of microwave tunable/ reconfigurable BPFs and/or switched multiplexer topologies have been proposed and designed employing various switching technologies based on either semiconductor-based devices (e.g., field-effect transistors [FETs], PIN diodes, varactors) [5][6][7] or micro-electromechanical systems (MEMS) devices, 8 for achieving such filter banks. These filter banks demonstrated incorporate tuning/switching elements positioned either before multiple channels (switched multiplexer design) or within each filter inside a band (tunable BPF design).…”

Section: Introductionmentioning

confidence: 99%

“…As a consequence, a range of microwave tunable/reconfigurable BPFs and/or switched multiplexer topologies have been proposed and designed employing various switching technologies based on either semiconductor‐based devices (e.g., field‐effect transistors [FETs], PIN diodes, varactors) 5–7 or micro‐electro‐mechanical systems (MEMS) devices, 8 for achieving such filter banks. These filter banks demonstrated incorporate tuning/switching elements positioned either before multiple channels (switched multiplexer design) or within each filter inside a band (tunable BPF design) 5–8 . However, all the aforementioned switching technologies require complex biasing circuitry for their operation.…”

Section: Introductionmentioning

confidence: 99%

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Dynamically tuning and reconfiguring microwave bandpass filters using optical control of switching elements

Li,

Zahedi,

Shi

et al. 2024

Micro & Optical Tech Letters

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We report a novel approach for dynamically tuning and reconfiguring microwave bandpass filters (BPFs) based on optically controlled switching elements using photoconductivity modulation in semiconductors. For a prototype demonstration, a BPF circuit featuring a second‐order design using two closely coupled split‐ring resonators embedded with multiple silicon chips (as switching elements) was designed, fabricated, and characterized. The silicon chips were optically linked to fiber‐coupled laser diodes (808 nm light) for switching/modulation, enabling dynamic tuning and reconfiguring of the BPF without any complex biasing circuits. By turning on and off the two laser diodes simultaneously, the BPF response can be dynamically reconfigured between bandpass and broadband suppression. Moreover, the attenuation level of the passband can be continuously adjusted (from 0.7 to 22 dB at the center frequency of 3.03 GHz) by varying the light intensity from 0 to 40 W/cm2. The tuning/reconfiguring 3‐dB bandwidth is estimated to be ~200 kHz. In addition, the potential and limitations of the proposed approach using photoconductivity modulation are discussed. With the strong tuning/reconfiguring capability demonstrated and the great potential for high‐frequency operation, this approach holds promise for the development of more advanced tunable filters and other adaptive circuits for next‐generation sensing, imaging, and communication systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamically tuning and reconfiguring microwave bandpass filters using optical control of switching elements

Li,

Zahedi,

Shi

et al. 2024

Micro & Optical Tech Letters

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“…2.14). The design of a four-channel switched filter bank in the S-and C-band using p-i-n-diode switches was also described in [78].…”

Section: Reconfigurable Filtersmentioning

confidence: 99%

“…Most switches are based on mechanical rotatory systems [75], or use semiconductor technology [78] and MEMS [76,88]. Recently, in [89][90][91], a new approach to design waveguide switches was proposed.…”

Section: Reconfigurable Waveguide Componentsmentioning

confidence: 99%

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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High-Performance SLCFETs for Switched Filter Applications

Parke

Freitag

Torpey

et al. 2016

2016 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS)

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p-i-n-Diode-Based Four-Channel Switched Filter Bank With Low-Power TTL-Compatible Driver

Cited by 10 publications

References 7 publications

Dynamically tuning and reconfiguring microwave bandpass filters using optical control of switching elements

Dynamically tuning and reconfiguring microwave bandpass filters using optical control of switching elements

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

High-Performance SLCFETs for Switched Filter Applications

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