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Ortiz Pérez de Eulate, Noelia

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https://academica-e.unavarra.es/handle/2454/49698

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Ortiz Pérez de Eulate

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Noelia

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Ingeniería Eléctrica y Electrónica

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1174203

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3624

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2003 - 200912010 - 20172
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  • Thumbnail Image
    PublicationOpen Access
    Diseño de una antena dual gaussiana de doble profundidad de corrugación
    (2003) Ortiz Pérez de Eulate, Noelia; Teniente Vallinas, Jorge; Gonzalo García, Ramón; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    In this paper a new design of a dual-band corrugated horn antenna is presented. The design is based on a gaussian profile to allow high pattern symmetry, low-crosspolar levels and low-side-lobes over a wide frequency range. To achieve a dual-band corrugated horn antenna, dual depth corrugations were used along the whole profile. The design presents a nice far field radiation pattern, which is compatible with the frequency reuse requirements in satellite communication antennas. The horn has been designed to operate in two frequency bands between X, Ku and K bands. Simulations and measurements show pretty good radiation patterns with return loss below –20dB and crosspolar-levels below –30dB in both frequency bands.
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    PublicationOpen Access
    Synthesis and design of novel metamaterial radiation structures
    (2017) Ortiz Pérez de Eulate, Noelia; Falcone Lanas, Francisco; Sorolla Ayza, Mario; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    The present thesis deals with the design and practical implementation of novel netamaterial planar antenna structures based on Complementary Split Ring Resonator (CSRR) particles. As CSRR particles display a very attractive electrical performance when used as unit cell for metasurfaces, the authors of this thesis have proposed to implement such particles in waveguide lters. In this case, the possibility to design waveguide lters with lengths equal to the thickness of a metallic sheet is con rmed. Consequently, the proposed structure constitutes a signi cant reduction of the dimensions of the well-known resonant cavity waveguide lters coupled by irises. The behavior of CSRR particles within compact waveguide lter suggested the authors to use them as stand alone radiating elements. As expected, due to the reduced electrical volume of CSRRs, such particles exhibited low radiation e ciency. In order to improve the radiation e ciency, the idea to implement CSRRs inside a larger structure came to us. Measurement results con rm this hypothesis and raise the question to design multi-band antennas. In order to implement multi-band antennas, several CSRRs are inserted at di erent positions in the patch. It is then observed that the grouping of CSRRs can provide either multi-band operation or polarization rotation capabilities, when Electro-Inductive Waves (EIW) are supported. Finally, thanks to EIW propagation, the idea to use longer CSRR chains as radiating structures came to us. As an intermediate step, and in order to validate simulated results, a nite array composed of nine CSRRs is manufactured and partially tested. Though partial, this test results are very encouraging and motivate a more in deep measurement campaign. This campaign is expected to result into new publications on this topic. These results support the use of the proposed CSRR chains for the design of leaky wave antennas.
  • Thumbnail Image
    PublicationOpen Access
    Gain improvement of dual band antenna based on complementary rectangular split-ring resonator
    (Hindawi / Wiley, 2012) Ortiz Pérez de Eulate, Noelia; Falcone Lanas, Francisco; Sorolla Ayza, Mario; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    A simple and successful dual band patch linear polarized rectangular antenna design is presented. The dual band antenna is designed etching a complementary rectangular split-ring resonator in the patch of a conventional rectangular patch antenna. Furthermore, a parametric study shows the influence of the location of the CSRR particle on the radiation characteristics of the dual band antenna. Going further, a miniaturization of the conventional rectangular patch antenna and an enhancement of the complementary split-ring resonator resonance gain versus the location of the CSRR on the patch are achieved. The dual band antenna design has been made feasible due to the quasistatic resonance property of the complementary split-ring resonators. The simulated results are compared with measured data and good agreement is reported.