Open Access
Ultra-wide band corrugated profiled horn antenna design
(IEEE, 2002) Teniente Vallinas, Jorge; Gonzalo García, Ramón; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
Nowadays, an increasing number of applications need stable radiation patterns with low sidelobes and low crosspolar levels in a very wide bandwidth. Gaussian Profiled Horn Antennas (GPHA’s) have demonstrated its feasibility as one of the best solutions. A corrugated gaussian horn antenna design with more than 40% bandwidth is proposed in this letter. The measured radiated far field patterns have a good agreement with the simulated ones. The measured results show a gaussian antenna with extremely wide bandwidth low sidelobes and low crosspolar levels.
Open Access
Designing antenna systems with CORPS (coherently radiating periodic structures)
(2005) Betancourt Quiñones, Diego; García Esparza, Raúl; Ibáñez Loinaz, Asier; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
In this paper a new philosophy to design antenna systems is presented. It is based on the recently proposed Coherently Radiating Periodic Structures (CORPS). These structures are essentially a periodic structure which all the elements are radiating elements coupled coherently (in-phase). This principle could allow the designer to simplify the needed feeding network for many array antenna systems since some elements could be coupled from the neighbouring ones, keeping the original excitation profile. It will be also shown in this paper how the three dimensional version of CORPS could be understood as a focusing planar lens, since it is possible to distribute the information of one element to many radiating elements by using the coherent coupling mechanism between all the elements of the whole structure. With this configuration, many directive beams could be really close to each other, increasing the possibilities to handle high resolution in imaging systems.
Open Access
Meta-material behaviour of the new Coherently Radiating Periodic Structures (CORPS)
(2005) Betancourt Quiñones, Diego; Ibáñez Loinaz, Asier; García Esparza, Raúl; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
In this paper, the study of the new Coherently Radiating Periodic Structures (CORPS) like a Metamaterial sets out. The shape of the structure under study is composed by two different layers, one layer is an array of square metallic patches and the other layer is an array of cross shaped slots. All the elements of each layer are placed in a rectangular lattice grid of lg, ensuring coherent coupling between elements of the same layer being this the main feature of the Coherently Radiating Periodic Structures (CORPS). To built up the whole structure, a total number of three layers (patches-slots-patches) are stacked and separated by dielectric slabs of either 10.2 or 1.0006 (air) of permittivity. The simulations were done using MoM and Finite Elements Method (i.e. Ansoft Designer and HFSS respectively).
Open Access
Coherently radiating periodic structures (CORPS): aplicaciones prácticas
(2005) Ibáñez Loinaz, Asier; Betancourt Quiñones, Diego; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
In this paper some possible applications of the new philosophy to design antenna systems based on the Coherently Radiating Periodic Structures (CORPS) is presented. This principle could allow the designer to simplify the needed feeding network for many array antenna systems since some elements could be coupled from the neighbouring ones, keeping the original excitation profile. It will be also shown in this paper how the three dimensional version of CORPS could be understood as a focusing planar lens, since it is possible to distribute the information of one element to many radiating elements by using the coherent coupling mechanism between all the elements of the whole structure. With this configuration, many directive beams could be really close to each other, increasing the possibilities to handle high resolution in imaging systems.
Open Access
Utilizando CORPS-BFN para alimentar sistemas de antenas de múltiples haces
(2007) Betancourt Quiñones, Diego; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
This paper present an application of the Coherently Radiating Periodic Structures - CORPS on the design of a Beam Forming Network -BFN. The Named CORPS-BFN is a novel feeding network with special behaviour characteristics that allows several improvements compared with classical feeding networks, such as, the reduction of necessary electronic to control a phased array and the possibility to have several beams very close to each other. In this paper, an analytical comparison of CORPS-BFN with both a Horn Antenna Array and a uniformly field distribution antenna will be analyzed. This study shows how applying this technology to a Multibeam antenna system the area necessary to radiate 7 independent beams can be drastically reduced.
Open 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.
Open Access
Diseño de filtros en guía rectangular usando estructuras PBG's
(2000) Mendióroz, Luis; Martínez de Espronceda Cámara, Beatriz; Gonzalo García, Ramón; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
A new application of dielectric periodic structures (also known as PBG) to build and design waveguide filters is presented. The periodic structures have some stop frequency bands, band gaps, defined by the geometry, within any mode can propagate through the structure. One could use this particular feature of the periodic structures to implement waveguide filters, or any other device with some frequency dependence [1,2]. In particular, we will focus in the description through an example of all the different effects produced by this kind of structures within a rectangular waveguide.
Open Access
Choked-gaussian corrugated horn antenna design small global coverage horn antenna for TT&C with extremely low sidelobe level
(2003) Teniente Vallinas, Jorge; Gonzalo García, Ramón; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
Extremely low sidelobe horn antennas are often required for the actual technology. This type of horn antennas are important to avoid interference with other systems. In this paper we describe a new design implementing a radical change in the current technology. It consists in attaching together a choked-waveguide antenna with a classical pure gaussian output corrugated horn. A really impressive radiation pattern with very low sidelobes and crosspolar levels in a very short antenna is obtained. This antenna shape was firstly presented in [1]. In this paper an improvement in size, weight, bandwidth and crosspolar level of the design is shown. This improvement has been possible due to the optimisation of the profile by means of the use of a mode matching code (mwave Wizard) instead of a time consuming finite element code.
Open Access
Diseño y medida de una antena choke-gaussiana
(2002) Goñi Campión, David; Teniente Vallinas, Jorge; Gonzalo García, Ramón; Río Bocio, Carlos del; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
A new design of corrugated horn antenna for global earth coverage from a geostationary satellite to obtain very low sidelobes and crosspolar levels with a really compact design in a quite wide bandwidth is presented in this paper. We compare this horn performance with the designs of other authors. Measurements show a really impressive radiation patterns with sidelobe levels below –43 dB in a certain bandwidth.
Open Access
A dedicated numerical technique for field simulations of antennas on electromagnetic band-gap substrates
(2004) Hon, B.P. de; Beurden, M.C. van; Gonzalo García, Ramón; Martínez Pascual, Beatriz; Ederra Urzainqui, Íñigo; Río Bocio, Carlos del; Azcona, L.; Alderman, B.; Huggard, P.G.; Marchand, L.; Maagt, Peter de; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa