Search Results - "Alvarez Melcon, Alejandro"

Isolating Bandpass Filters Using Time-Modulated Resonators by Wu, Xiaohu, Liu, Xiaoguang, Hickle, Mark D., Peroulis, Dimitrios, Gomez-Diaz, Juan Sebastian, Alvarez Melcon, Alejandro

“…In this paper, we demonstrate, for the first time, an isolating bandpass filter with low-loss forward transmission and high reverse isolation by modulating its…”
Get full text

Design of Evanescent-Mode Rectangular Waveguide Inline Bandpass Filters With Transmission Zeros Using Split Ring Resonators by Aparicio, Antonio Oliva, Jimenez, Juan Hinojosa, Pereira, Fernando D. Quesada, Melcon, Alejandro Alvarez

“…This article presents a novel design method for inline bandpass filters exhibiting prescribed transmission zeros (TZs) above the passband. The basic structure…”
Get full text

Efficient Calculation of the 3-D Rectangular Waveguide Green's Functions Derivatives by the Ewald Method by Cruz, Antonio Manuel Huescar de la, Molina, Celia Gomez, Pereira, Fernando Daniel Quesada, Melcon, Alejandro Alvarez, Esbert, Vicente E. Boria

“…In this contribution, the Ewald method has efficiently been applied to accelerate the computation of the rectangular waveguide Green's functions (GFs)…”
Get full text

Efficient Integral Equation Analysis of 3-D Rectangular Waveguide Microwave Circuits by Using Green's Functions Accelerated With the Ewald Method by Huescar de la Cruz, Antonio Manuel, Gomez Molina, Celia, Quesada Pereira, Fernando Daniel, Alvarez Melcon, Alejandro, Boria Esbert, Vicente E.

“…In this contribution, an electric field integral equation (EFIE) formulation is proposed, for the analysis of microwave circuits based on rectangular…”
Get full text

Flexible UHF RFID Tag for Blood Tubes Monitoring by El Khamlichi, Mohamed, Alvarez Melcon, Alejandro, El Mrabet, Otman, Ennasar, Mohammed Ali, Hinojosa, Juan

“…Low-cost and flexible radio frequency identification (RFID) tag for automatic identification, tracking, and monitoring of blood products is in great demand by…”
Get full text

Multimode Equivalent Networks for Shielded Microwave Circuits With Thick Metallizations by Molina, Celia Gomez, Pereira, Fernando Quesada, Marini, Stephan, Melcon, Alejandro Alvarez, Boria, Vicente E., Guglielmi, Marco

“…In this article, we show how the multimode equivalent network (MEN) technique can be extended to the analysis of multilayer boxed planar microwave circuits…”
Get full text

Narrowband and Wideband Bandpass Filters Based on Empty Substrate Integrated Waveguide Loaded With Dielectric Elements by Maximo-Gutierrez, Clara, Hinojosa, Juan, Alvarez-Melcon, Alejandro

“…Although several bandpass filters have been designed in the recently proposed empty substrate integrated waveguide (ESIW) technology to improve the quality…”
Get full text

Frequency Steerable Two Dimensional Focusing Using Rectilinear Leaky-Wave Lenses by Gomez-Tornero, José Luis, Quesada-Pereira, F, Alvarez-Melcon, Alejandro, Goussetis, G, Weily, A R, Guo, Y J

“…The concept of frequency steerable two-dimensional electromagnetic focusing by using a tapered leaky-wave line source embedded in a parallel-plate medium is…”
Get full text

Advanced filter design technique based on equivalent circuits and coupling matrix segmentation by Martinez Martinez, David, Pons Abenza, Alejandro, Romera Perez, Antonio, Hinojosa, Juan, Quesada‐Pereira, Fernando, Alvarez‐Melcon, Alejandro, Guglielmi, Marco

“…Summary This paper presents a technique for the efficient design of bandpass waveguide microwave filters using a segmentation technique applied to an…”
Get full text

Frequency Tunable Non-Reciprocal Bandpass Filter Using Time-Modulated Microstrip λg/2 Resonators by Wu, Xiaohu, Nafe, Mahmoud, Melcon, Alejandro Alvarez, Gomez-Diaz, Juan Sebastian, Liu, Xiaoguang

“…This brief presents a novel frequency reconfigurable microstrip non-reciprocal bandpass filter based on time-modulated microstrip λ g /2 resonators. The…”
Get full text

Electrically and Magnetically Biased Graphene-Based Cylindrical Waveguides: Analysis and Applications as Reconfigurable Antennas by Correas-Serrano, Diego, Gomez-Diaz, Juan Sebastian, Alu, Andrea, Alvarez-Melcon, Alejandro

“…The propagation of surface waves along electrically and magnetically biased graphene-based cylindrical waveguides (GCWs) is investigated in detail. Analytical…”
Get full text

Design and Implementation of Quart-Torus Waveguide Filters for Layout Optimization Using Additive Manufacturing Techniques by Pons-Abenza, Alejandro, Alvarez-Melcon, Alejandro, Quesada-Pereira, Fernando Daniel, Romera-Perez, Antonio, Arche-Andradas, Lara

“…In this contribution, a novel quart-torus cavity for the design of waveguide filters is presented. A filter breadboard based on this kind of cavity is designed…”
Get full text

Advanced traceability system in aquaculture supply chain by Parreño-Marchante, Alfredo, Alvarez-Melcon, Alejandro, Trebar, Mira, Filippin, Piero

“…•A new system architecture combining RFID and WSN is proposed.•The flexibility of the new system was tested in two fish companies.•Key business objectives and…”
Get full text

Compact Wideband Groove Gap Waveguide Bandpass Filters Manufactured with 3D Printing and CNC Milling Techniques by Máximo-Gutierrez, Clara, Hinojosa, Juan, Abad-López, José, Urbina-Yeregui, Antonio, Alvarez-Melcon, Alejandro

“…This paper presents for the first time a compact wideband bandpass filter in groove gap waveguide (GGW) technology. The structure is obtained by including…”
Get full text

Design of Wideband Substrate Integrated Waveguide Filters With Tunable Lowpass Characteristics by Maximo-Gutierrez, Clara, Hinojosa, Juan, Alvarez-Melcon, Alejandro

“…In this paper, the application of the stepped impedance synthesis technique in the design of tunable wideband substrate integrated waveguide (SIW) Chebyshev…”
Get full text

Multimode Equivalent Network for Boxed Multilayer Arbitrary Planar Circuits by Gomez Molina, Celia, Pereira, Fernando Quesada, Melcon, Alejandro Alvarez, Marini, Stephan, Sanchez-Soriano, Miguel Angel, Boria, Vicente E., Guglielmi, Marco

“…The multimode equivalent network (MEN) formulation has been originally developed for the efficient and accurate analysis of waveguide devices. In this article,…”
Get full text

Spatially Dispersive Graphene Single and Parallel Plate Waveguides: Analysis and Circuit Model by Correas-Serrano, D., Gomez-Diaz, J. S., Perruisseau-Carrier, J., Alvarez-Melcon, A.

“…The propagation of surface waves along spatially dispersive graphene-based 2-D waveguides is investigated in detail. Graphene is characterized using a full-k ρ…”
Get full text

An Efficient Technique to Assess the Convergence of the Multimode Equivalent Network for Waveguide Devices by Gomez Molina, Celia, Quesada Pereira, Fernando, Alvarez Melcon, Alejandro, Boria, Vicente E., Guglielmi, Marco

“…Numerical methods are widely used to analyze and design microwave components for communication applications. In the implementation of any numerical technique,…”
Get full text

A Non-Reciprocal Microstrip Bandpass Filter Based on Spatio-Temporal Modulation by Xiaohu Wu, Nafe, Mahmoud, Alvarez Melcon, Alejandro, Gomez-Diaz, J. Sebastian, Xiaoguang Liu

“…A magnetless non-reciprocal filter based on spatio-temporal modulation is demonstrated in this paper. By modulating the resonant frequencies of the resonators…”
Get full text

Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization Response by Do, James T. S., Zang, Jiawei, Alvarez-Melcon, Alejandro, Gomez-Diaz, Juan Sebastian

“…In this paper, we propose and demonstrate time-modulated patch antennas able to exhibit opposite polarization ellipticity when operated in transmission or…”
Get full text