Miguel Ferrando‐Bataller
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View article: Proof-of-Concept of a Monopulse Antenna Architecture Enabling Radar Sensors in Unmanned Aircraft Collision Avoidance Systems for UAS in U-Space Airspaces
Proof-of-Concept of a Monopulse Antenna Architecture Enabling Radar Sensors in Unmanned Aircraft Collision Avoidance Systems for UAS in U-Space Airspaces Open
In this paper, we propose and prove an innovative radar antenna concept suitable for collision avoidance (CA) systems installed onboard small, unmanned aircraft (UA). The proposed architecture provides 360° monopulse coverage around the ho…
View article: Spherical and Aspherical Lenses for Boosting the Performance of Terahertz Imaging Systems
Spherical and Aspherical Lenses for Boosting the Performance of Terahertz Imaging Systems Open
A comprehensive study on the enhancement of terahertz (THz) detection through the terajet effect is performed using mesoscale dielectric lenses of different shapes and sizes. Polytetrafluoroethylene (PTFE) lenses, including spherical, asph…
View article: Circularly Polarized Conical Array for ADS-B Applications in LEO Satellites
Circularly Polarized Conical Array for ADS-B Applications in LEO Satellites Open
This paper presents the design of a dual-layer conical antenna array tailored for Automatic Dependent Surveillance-Broadcast (ADS-B) applications intended for integration into Low Earth Orbit (LEO) satellites. The proposed antenna system c…
View article: Proof-of-Concept of a Monopulse Antenna Architecture Enabling Radar Sensors in Unmanned Aircraft Collision Avoidance Systems for UAS in U-Space Airspaces
Proof-of-Concept of a Monopulse Antenna Architecture Enabling Radar Sensors in Unmanned Aircraft Collision Avoidance Systems for UAS in U-Space Airspaces Open
In this paper, we propose and proof an innovative concept of radar antennas suited for Collision Avoidance (CA) systems installed on board small Unmanned Aircraft (UA). The proposed architecture provides 360º monopulse coverage around the …
View article: Cost-Effective Single-Layer Metallic Lens Antenna With High Aperture Efficiency
Cost-Effective Single-Layer Metallic Lens Antenna With High Aperture Efficiency Open
This paper presents a novel millimeter-wave high-gain single-layer lens antenna design that features a metallic ring as its foundational element. Leveraging characteristic modes analysis, the shape of the structure is systematically optimi…
View article: Multimodal planar monopole filtenna for 5G applications
Multimodal planar monopole filtenna for 5G applications Open
[EN] This paper presents a novel planar filtering antenna (filtenna) with simple layout based on tightly -coupled different -length monopoles. Its design methodology is based on an even-mode/odd-mode decomposition of the monopole currents,…
View article: Characteristic Modes Analyses for Misalignment in Wireless Power Transfer System
Characteristic Modes Analyses for Misalignment in Wireless Power Transfer System Open
(c) 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works f…
View article: Enhancing resolution of terahertz imaging systems below the diffraction limit
Enhancing resolution of terahertz imaging systems below the diffraction limit Open
[EN] We report on resolution enhancement of sub-terahertz (THz) images by using the terajet effect. A mesoscale cuboid dielectric particle, used to establish the terajet, was placed in front of an object located at the focus of the THz bea…
View article: Miniaturized On-Ground 2.4 GHz IoT LTCC Chip Antenna and Its Positioning on a Ground Plane
Miniaturized On-Ground 2.4 GHz IoT LTCC Chip Antenna and Its Positioning on a Ground Plane Open
This paper presents a very low-profile on-ground chip antenna with a total volume of 0.075λ0× 0.056λ0× 0.019λ0 (at f0 = 2.4 GHz). The proposed design is a corrugated (accordion-like) planar inverted F antenna (PIFA) embedded in low-loss gl…
View article: Analysis of cavity back antennas with characteristic modes
Analysis of cavity back antennas with characteristic modes Open
The objective of the communication is to present the latest advances made by the authors in the design of cavityback directive antennas in the sub-6 GHz band, with Ultra-Wide Band characteristics [1,2].A thorough study of several open cavi…
View article: A Dual-Band Dual-Polarized Antenna Design for a Weather Radar with Characteristic Modes Analysis and MoM
A Dual-Band Dual-Polarized Antenna Design for a Weather Radar with Characteristic Modes Analysis and MoM Open
[EN] We describe here an antenna design to be used in\na weather Radar for hydrometeors detection and\ncharacterization. This antenna could operate in two frequency\nbands and with any polarization. The proposed model was\nanalyzed and opt…
View article: Sector Unit-Cell Methodology for the Design of Sub-6 GHz 5G MIMO Antennas
Sector Unit-Cell Methodology for the Design of Sub-6 GHz 5G MIMO Antennas Open
[EN] A novel methodology based on the sectorization of multiple-port cavities with azimuthal symmetry into sector unit cells is presented to design 5G multiple-input multiple-output (MIMO) sub-6 GHz antennas. The methodology divides an N-p…
View article: Multiport broadband 5G MIMO antenna with very high isolation
Multiport broadband 5G MIMO antenna with very high isolation Open
[EN] This paper presents a new unidirectional radiating\nstructure with 4 independent radiation patterns, with an isolation\nof more than 24 dB, and with a bandwidth of 20 %, oriented\nfor use in 5G indoor MIMO base stations. The element c…
View article: Eight-Port Wideband MIMO Antenna for Sub-6 GHz 5G Base Stations
Eight-Port Wideband MIMO Antenna for Sub-6 GHz 5G Base Stations Open
[EN] An eight-port wide-band multiple-input multiple-output (MIMO) antenna is presented for base stations applications. The antenna is composed by four unit cells (2×2) separated by a cross-shaped isolating block with a total size of 220×2…
View article: PIFA antenna for smart watch application in the 2.4 GHz band
PIFA antenna for smart watch application in the 2.4 GHz band Open
[EN] This paper presents a Planar Inverted-F Antenna (PIFA) design for a smartwatch application, optimized to operate on the 2.4 GHz Bluetooth frequency band, on the proximity of the human forearm. The PIFA antenna is mounted on the watchs…
View article: Optimization of 2D Heterogeneous Lenses via BFGS and Volume Integral Equation Method
Optimization of 2D Heterogeneous Lenses via BFGS and Volume Integral Equation Method Open
[EN] In this paper we apply a quasi-Newton optimization algorithm called BFGS to optimize heterogeneous lenses in 2D by using the volume integral equation method. Different preliminary designs are presented with frequency selective focal p…
View article: Dual-Band Planar Antenna with AMC Screen for On-Body Applications
Dual-Band Planar Antenna with AMC Screen for On-Body Applications Open
[EN] This paper presents a dual-band planar meander\nline antenna with an AMC screen for on-body applications. The\nantenna is aimed to operate at 0.86 and 2.4 GHz. The AMC\nscreen is used to mitigate the effect of the human body into the\…
View article: Low-profile UWB antenna with unidirectional radiation pattern analyzed with the theory of characteristic modes
Low-profile UWB antenna with unidirectional radiation pattern analyzed with the theory of characteristic modes Open
[EN] This paper presents a low-profile Ultra Wide Band (UWB) antenna with polarization diversity for new 5G base stations. The antenna consists of a metallic ring capacitively fed with four circular monopoles and reinforced with a cylindri…
View article: Radiation Pattern Reconfigurable Antenna for IoT Devices
Radiation Pattern Reconfigurable Antenna for IoT Devices Open
Based on the characteristic mode theory, a versatile radiation pattern reconfigurable antenna is proposed. The analysis starts from two parallel metallic plates with the same and different dimensions. By means of two PIN diodes, the size o…
View article: Responsivity enhancement of a strained silicon field-effect transistor detector at 0.3 THz using the terajet effect
Responsivity enhancement of a strained silicon field-effect transistor detector at 0.3 THz using the terajet effect Open
We report on the enhancement of responsivity by more than one order of magnitude of a silicon-based sub-terahertz detector when a mesoscopic dielectric particle was used to localize incident radiation to a sub-wavelength volume and focus i…
View article: Numerical Study of the Coupling of Sub-Terahertz Radiation to n-Channel Strained-Silicon MODFETs
Numerical Study of the Coupling of Sub-Terahertz Radiation to n-Channel Strained-Silicon MODFETs Open
This paper reports on a study of the response of a T-gate strained-Si MODFETs (modulation-doped field-effect transistor) under continuous-wave sub-THz excitation. The sub-THz response was measured using a two-tones solid-state source at 0.…
View article: Four-Port Wide-Band Cavity-Backed Antenna With Isolating X-Shaped Block for Sub-6 GHz 5G Indoor Base Stations
Four-Port Wide-Band Cavity-Backed Antenna With Isolating X-Shaped Block for Sub-6 GHz 5G Indoor Base Stations Open
[EN] A four-port wideband cavity-backed antenna is presented for indoor base stations applications. The antenna is composed of a square open cavity with an X-shaped isolating block and 4 feeding monopoles symmetrically and orthogonally arr…
View article: Effect of the Front and Back Illumination on Sub-Terahertz Detection Using n-Channel Strained-Silicon MODFETs
Effect of the Front and Back Illumination on Sub-Terahertz Detection Using n-Channel Strained-Silicon MODFETs Open
Plasma waves in semiconductor gated 2-D systems can be used to efficiently detect Terahertz (THz) electromagnetic radiation. This work reports on the response of a strained-Si Modulation-doped Field-Effect Transistor (MODFET) under front a…
View article: Development of the SDG-general skills binomial in university teaching: an integral vision at UPV
Development of the SDG-general skills binomial in university teaching: an integral vision at UPV Open
Currently, Spanish Universities are involved in the implementation of the Sustainable Development Goals promulgated by the United Nations as part of the 2030 Agenda. In these Institutions, the implementation of these goals should not be li…
View article: Analysis of Magnetically-Coupled Loops Based On Characteristic Modes
Analysis of Magnetically-Coupled Loops Based On Characteristic Modes Open
[EN] A preliminary numerical magnetic field study of a wireless power transfer system composed of two interconnected source loops is addressed in this paper. The key feature of this study is to propose a new configuration capable of mainta…
View article: Radiation Pattern Agile Antenna using PIN Diodes and SPDT Switches
Radiation Pattern Agile Antenna using PIN Diodes and SPDT Switches Open
[EN] In this paper, a new design of a reconfigurable\nantenna is proposed. The antenna structure is using two PIN\ndiodes for switching between two radiation patterns (directional\nand bidirectional) and a SPDT switch to achieve good imped…
View article: A New Quadrature Method for Singular Integrals of Boundary Integral Equations in Electromagnetism
A New Quadrature Method for Singular Integrals of Boundary Integral Equations in Electromagnetism Open
[EN] In this paper we present a new method to compute singular integrals and nearly singular integrals in the context of boundary integral equations for electromagnetism. In particular the method is well suited for integral equations of th…