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Listar por autor "Melgarejo Lermas, Juan Carlos"

Mostrando ítems 1-11 de 11

A New Family of Multiband Waveguide Filters Based on a Folded Topology

Melgarejo, Juan Carlos; Cogollos, Santiago; Guglielmi, Marco; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers, 2020-07)

[EN] In this article, we describe a new family of multiband waveguide filters based on a folded topology. The folded topology allows to use the filters of different orders and the introduction of transmission zeros. The ...
A New Family of Reconfigurable Waveguide Filters and Diplexers for High-Power Applications

Melgarejo, Juan Carlos; Ossorio, Javier; Cogollos, Santiago; Guglielmi, Marco; San-Blas, Angel Antonio; Valencia-Sullca, Joaquín F.; Vidal Pantaleoni, Ana; Tronser, Tillman; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers, 2023)

[EN] In this paper, we discuss how the use of the recently developed modified tuning pin (MTP) can be extended to the design of filters and diplexers implemented in rectangular waveguide, that can be reconfigured in a ...
Advanced Techniques for the Design and Optimization of Multi-Band and Reconfigurable Microwave Waveguide Filters

Melgarejo Lermas, Juan Carlos (Universitat Politècnica de València, 2021-09-02)

[ES] 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 ...
Aplicación para el análisis del estándar AMR

Melgarejo Lermas, Juan Carlos (Universitat Politècnica de València, 2017-03-21)

AMR (Adaptive Multi-Rate) es uno de los estándares de codificación de voz más empleados en la actualidad. Gracias al uso de un algoritmo CELP (Code-Excited Linerar Prediction) multitasa, AMR es capaz de codificar eficientemente ...
Diseño de un filtro de espúreos y un diplexor embarcados en satélite

Melgarejo Lermas, Juan Carlos (Universitat Politècnica de València, 2020-01-02)

[ES] El objetivo de este trabajo es diseñar dos componentes de microondas para un satélite real en banda K: un filtro de espúreos y un diplexor. Ambos componentes fueron encargados al Departamento de Comunicaciones por la ...
Diseño de un filtro tribanda empleando una topología doblada

Melgarejo Lermas, Juan Carlos (Universitat Politècnica de València, 2020-01-02)

[ES] El objetivo de este trabajo es diseñar un filtro tribanda empleando una nueva topología de filtros doblados. Esta topología permite reducir el tamaño del filtro e introducir ceros de transmisión en cada canal. En este ...
Experimental Validation of Multipactor Effect for Ferrite Materials Used in L- and S-Band Nonreciprocal Microwave Components

Vague Cardona, José Joaquín; Melgarejo-Lermas, Juan Carlos; Boria Esbert, Vicente Enrique; GUGLIELMI, MARCO; Moreno Cambroreno, María del Rocío; Reglero Mangada, Marta Sofía; Mata-Sanz, Rafael; Montero, Isabel; Gonzalez Iglesias, Daniel; GIMENO MARTINEZ, BENITO; Gomez, Alvaro; Vegas, Ángel; RABOSO GARCÍA-BAQUERO, DAVID (Institute of Electrical and Electronics Engineers, 2019-06)

[EN] This paper reports on the experimental measurement of power threshold levels for the multipactor effect between samples of ferrite material typically used in the practical implementation of L-and S-band circulators ...
Inductive Cascaded Quadruplet With Diagonal Cross-Coupling in Rectangular Waveguide

Cogollos, Santiago; Cameron, Richard J.; Guglielmi, Marco; Melgarejo, Juan Carlos; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers, 2022)

[EN] The objective of this paper is to show how inductive quadruplets with diagonal cross-couplings can be used as building blocks for filters in rectangular waveguide. Starting with the coupling matrix synthesis, we show ...
Multipactor Effect Characterization of Dielectric Materials for Space Applications

Vague Cardona, José Joaquín; Melgarejo-Lermas, Juan Carlos; Guglielmi, Marco; Boria Esbert, Vicente Enrique; Anza Hormigo, Sergio; Vicente Quiles, Carlos Pascual; Moreno Cambroreno, María del Rocío; Taroncher Calduch, Mariam; Gimeno Martínez, Benito; Raboso García-Baquero, David (Institute of Electrical and Electronics Engineers, 2018-08)

[EN] The objective of this paper is to advance the state of the art in the characterization of the multipactor effect in dielectric materials. The materials studied are the most commonly used dielectrics in space applications, ...
On Space Mapping Techniques for Microwave Filter Tuning

Melgarejo-Lermas, Juan Carlos; Ossorio-García, Javier; Cogollos, Santiago; GUGLIELMI, MARCO; Boria Esbert, Vicente Enrique; Bandler, John W. (Institute of Electrical and Electronics Engineers, 2019-12)

[EN] Space mapping (SM) and aggressive SM (ASM) techniques are widely used in the synthesis and design of microwave filters. Their popularity stems from the inherent simplicity of the procedures and from their effectiveness. ...
Waveguide Quadruplet Diplexer for Multi-Beam Satellite Applications

Ossorio García, Javier; Melgarejo Lermas, Juan Carlos; Cogollos, Santiago; Boria Esbert, Vicente Enrique; Guglielmi, Marco (Institute of Electrical and Electronics Engineers, 2020)

[EN] The objective of this paper is to describe the design of an innovative and low-cost diplexer for Ka-band multi-beam satellite applications. The device is based on the use of two quadruplets to implement a number of ...