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Teberio BerdĂșn, Fernando

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Teberio BerdĂșn

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Fernando

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0000-0002-4603-2273

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2016 - 201922020 - 20222
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Now showing 1 - 4 of 4
  • Thumbnail Image
    PublicationOpen Access
    Integrating multiple stubs in stepped-impedance filter aiming for high selectivity
    (IET, 2022) Sami, Abdul; GĂłmez Laso, Miguel Ángel; Lopetegui Beregaña, JosĂ© MarĂ­a; Arnedo Gil, Israel; Calero FernĂĄndez, Ibai; Teberio BerdĂșn, Fernando; MartĂ­n Iglesias, Petronilo; Benito Pertusa, David; Arregui Padilla, IvĂĄn; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren; Institute of Smart Cities - ISC; IngenierĂ­a ElĂ©ctrica, ElectrĂłnica y de ComunicaciĂłn
    A design technique to include multiple and fully-controlled transmission zeros (TZs) in the frequency response of rectangular waveguide commensurate-line stepped-impedance filters is presented in this letter. These bandpass filters (BPFs) are known for having reduced sensitivities against manufacturing inaccuracies and are composed of multiple waveguide sections. In order to improve their selectivity, 3λg/4 and λg/4-stubs are included to create multiple TZs around the passband. The proposed technique allows us to add multiple stubs in a single section and, therefore, only minor adjustments in the affected part of the filter are required, which simplifies the overall design process. The technique has been verified with a design example with four TZs (two on each side) near the passband.
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    PublicationOpen Access
    Robust tolerance design of bandpass filter with improved frequency response for Q-band satellite applications
    (IEEE, 2021) Sami, Abdul; Teberio BerdĂșn, Fernando; Miranda SantafĂ©, Luis; Arnedo Gil, Israel; MartĂ­n Iglesias, Petronilo; Benito Pertusa, David; Lopetegui Beregaña, JosĂ© MarĂ­a; GĂłmez Laso, Miguel Ángel; Arregui Padilla, IvĂĄn; IngenierĂ­a ElĂ©ctrica, ElectrĂłnica y de ComunicaciĂłn; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren
    A rectangular waveguide bandpass filter for Q-band with simple fabrication is proposed in this letter. The design is based on the use of the first passband replica of commensurate-line stepped-impedance structures and achieves the suppression of their inherent low-pass response. In order to do it, the filter is implemented by rectangular waveguide sections with different widths and heights that can be analytically calculated. The technique is validated by a 9th order Chebyshev filter with passband between 40 and 43 GHz and fabrication yield equal to 84 % for a manufacturing error of ± 20 Όm. The measured results of the prototype fabricated with CNC milling are in good agreement with the simulated ones.
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    PublicationOpen Access
    Rectangular waveguide filters with meandered topology
    (IEEE, 2018) Teberio BerdĂșn, Fernando; Percaz Ciriza, Jon Mikel; Arregui Padilla, IvĂĄn; MartĂ­n Iglesias, Petronilo; Lopetegui Beregaña, JosĂ© MarĂ­a; GĂłmez Laso, Miguel Ángel; Arnedo Gil, Israel; IngenierĂ­a ElĂ©ctrica y ElectrĂłnica; Ingeniaritza Elektrikoa eta Elektronikoa; Gobierno de Navarra / Nafarroako Gobernua, 0011-1365-2017-000130
    In this paper, a new topology for rectangular waveguide bandpass and low-pass filters is presented. A simple, accurate, and robust design technique for these novel meandered waveguide filters is provided. The proposed filters employ a concatenation of ±90° E-plane mitered bends (±90° EMBs) with different heights and lengths, whose dimensions are consecutively and independently calculated. Each ±90° EMB satisfies a local target reflection coefficient along the device so that they can be calculated separately. The novel structures allow drastically reduce the total length of the filters and embed bends if desired, or even to provide routing capabilities. Furthermore, the new meandered topology allows the introduction of transmission zeros above the passband of the low-pass filter, which can be controlled by the free parameters of the ±90° EMBs. A bandpass and a low-pass filter with meandered topology have been designed following the proposed novel technique. Measurements of the manufactured prototypes are also included to validate the novel topology and design technique, achieving excellent agreement with the simulation results.
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    PublicationOpen Access
    Resonant quasi-periodic structure for rectangular waveguide technology with wide stopband and band-pass behavior
    (EMW Publishing, 2016) Arregui Padilla, IvĂĄn; Teberio BerdĂșn, Fernando; Arnedo Gil, Israel; Percaz Ciriza, Jon Mikel; GĂłmez Torrent, AdriĂĄn; Chudzik, Magdalena; GĂłmez Laso, Miguel Ángel; Lopetegui Beregaña, JosĂ© MarĂ­a; IngenierĂ­a ElĂ©ctrica y ElectrĂłnica; Ingeniaritza Elektrikoa eta Elektronikoa
    In this paper, a novel quasi-periodic structure for rectangular waveguide technology is proposed. The constituent unit cells of the structure feature a resonant behavior, providing high attenuation levels in the stopband with a compact (small period) size. By applying a smooth taper-like variation to the height of the periodic structure, very good matching is achieved in the passband while the bandwidth of the stopband is strongly increased. Moreover, by smoothly tapering the width of the structure, a band-pass frequency behavior is obtained. In order to demonstrate the capabilities of the novel quasi-periodic structure proposed, a band-pass structure with good matching, wide rejected band, and high-power handling capability has been designed, fabricated, and measured obtaining very good results.