A5013340808- Antenna Design and Optimization
- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Wireless Communication Networks Research
- Wireless Networks and Protocols
- Advanced MIMO Systems Optimization
- Mobile Ad Hoc Networks
- Radio Astronomy Observations and Technology
- Advanced Wireless Network Optimization
- Ultra-Wideband Communications Technology
- UAV Applications and Optimization
- Millimeter-Wave Propagation and Modeling
- Satellite Communication Systems
- Energy Harvesting in Wireless Networks
- Quantum Information and Cryptography
- Quantum and electron transport phenomena
- Quantum Computing Algorithms and Architecture
- Nonlinear Optical Materials Studies
- Advanced Multi-Objective Optimization Algorithms
- Structural Analysis and Optimization
- Direction-of-Arrival Estimation Techniques
- Network Traffic and Congestion Control
- Advanced Fiber Laser Technologies
- Advanced Control Systems Optimization
Center for Scientific Research and Higher Education at Ensenada
2015-2024
Autonomous University of Tamaulipas
2007-2024
Universidad Autónoma de Nuevo León
2012
Ensenada Institute of Technology
2009
Universidad Publica de Navarra
2008
Quantum error correction with erasure qubits promises significant advantages over standard due to favorable thresholds for errors. To realize this advantage in practice requires a qubit which nearly all errors are such errors, and the ability check without dephasing qubit. We demonstrate that “dual-rail qubit” consisting of pair resonantly coupled transmons can form highly coherent qubit, where transmon <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"...
To solve problems of practical importance1,2, quantum computers probably need to incorporate error correction, in which a logical qubit is redundantly encoded many noisy physical qubits3–5. The large physical-qubit overhead associated with correction motivates the search for more hardware-efficient approaches6–18. Here, using superconducting circuit19, we realize memory formed from concatenation bosonic cat qubits an outer repetition code distance d = 5 (ref. 10). A stabilizing circuit...
A comparison between difierent modern population based optimization methods applied to the design of scannable circular antenna arrays is presented in this paper. This considers amplitude and phase excitations across elements operate with optimal performance whole azimuth plane (360 - ). Simulation results for excitation optimized by genetic algorithms, particle swarm difierential evolution method are provided. Furthermore, order set which case could provide a better terms side lobe level...
This article presents a new design of an ultra-wideband conformal antenna for Unmanned Aerial Vehicle (UAV) applications. The is low-profile structure which very suitable to diminish aerial vehicle drag problem. utilizes Rogers Duroid 5880LZ material with dimensions 29 mm × 39 mm. measurement results show ultrawideband performance the S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> <; -10dB from 2.9 GHz 15.9 GHz. A Y-rounded shape...
This paper presents a design of UAVs-based 3D antenna arrays for maximum performance in terms directivity and side lobe level (SLL). illustrates how to model the UAVs formation flight using nonuniform arrays. considers optimization positions elements flight. In this case, disk patch is chosen be used as element each UAV. The formulated by well-known cavity model. synthesis process carried out method Differential Evolution Multiobjective Optimization (DEMO). Furthermore, comparison provided...
A comparison between different modern multi-objective optimization methods applied to the design of concentric rings antenna arrays is presented in this paper. This considers amplitude and phase excitations across elements order generate trade-off curves side lobe level directivity for a scannable pattern with optimal performance whole azimuth plane. Simulation results by using evolutionary methods, such as: NSGA-II, DEMO, EM-MOPSO are provided document. Furthermore, comparative analysis...
This article presents an innovative design technique for feeding phase antenna arrays using coherently radiating periodic structure (CORPS) technology reducing the number of shifters (PSs) in limited-scan applications with low sidelobe level (SLL). The proposed configuration is implemented taking advantage interpolation property a CORPS network one layer. built by interconnecting <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">...
The design of concentric ring arrays for isoflux radiation is reported in this paper. This considers the reduction side lobe level and requirements Geostationary Earth Orbit (GEO) satellites. optimization problem spacing between rings levels amplitude excitations. well-known method Particle Swarm Optimization (PSO) utilized optimization. obtained results could lead satellite hardware to be reduced significantly even more that presented previously literature.
This paper introduces the design of sparse concentric rings array for isoflux coverage to Earth surface over a visibility cone more than 100°. antenna considers optimization angular separation between elements and amplitude excitation across in order generate characteristics desired radiation. Simulation results using an evolutionary multi-objective method are provided this document. Furthermore, analysis several cases wide patterns considering different number Low Orbit satellites is achieved.
The multi-objective design of concentric ring antenna arrays for isoflux radiation Geostationary Earth Orbit (GEO) and Medium (MEO) satellites is presented in this paper. This considers the optimization spacing between rings amplitude excitation across elements order to generate trade-off curves side lobe level (SLL) mask error. In use fewer levels excitations diminish hardware complexity, a considered array. Simulation results applying differential evolution (DEMO) method are provided...
This paper deals with the design of beam-forming networks (BFN) for scannable multibeam antenna arrays using Coherently Radiating Periodic Structures (CORPS).This CORPS-BFN considers optimization complex inputs feeding network by Differential Evolution (DE) algorithm.Simulation results different configurations a linear array are presented.The shown in this present certain interesting characteristics factor response and simplification BFN based on CORPS.
This paper deals with the design of steerable concentric rings array for low side lobe level using evolutionary optimization. arrays considers optimization amplitude and phase excitations across antenna elements by genetic algorithms. Some results obtained simulation a are presented. The shown in this present good performance factor response optimized
This report presents a novel design of concentric ring antenna array for reconfigurable isoflux pattern. The considers 61 disk patch antennas including mutual coupling by using the cavity model at frequency 2.8 GHz. problem consists in finding out few levels excitations antennas. Harmony search algorithm and particle swarm optimization are implemented this problem. permits to reduce complexity hardware whole system mounted satellite, where volume occupation heat dissipations critical issues.
This letter presents new designs of time-modulated antenna arrays for circularly polarized shaped beams. Disk patches are used at the X-band as elements distributed in nonuniform concentric square and circular apertures. The designed by optimizing time-switched sequence while maintaining uniform amplitudes. particle swarm optimization is utilized synthesis strategy. Two design examples flat-top isoflux patterns presented.
This paper proposes the design of virtual antenna arrays with frequency diversity for radar systems in fifth-generation flying ad hoc networks. These permit us to detect targets from sky drones. Each array element is composed a microstrip mounted on quadcopter drones and virtually connected other elements. The antennas are tuned work at lower band 3.5 GHz. process considers optimization offsets positions each obtain side lobe level reduction. methodology carried out by particle swarm...
Abstract This paper deals with the interference reduction capability of non‐uniform antenna arrays linear geometry at base station a cellular system. The well‐known method genetic algorithms is used to determine optimal array between elements in order provide maximum reduction. performance criterion for employed this suppression coefficient. Simulation results using different numbers nonuniform are provided. show that optimization provides better respect uniform separation case.
Purpose The purpose of this paper is to present the application an efficient genetic algorithm deal with problem computing trade‐off curves for non‐uniform circular arrays. In order answer questions related performance phased arrays, two criteria are considered evaluate design: minimum main beam width and side lobe level (SLL) during scanning. Design/methodology/approach design arrays modeled as a multi‐objective optimization problem. Non‐dominated Sorting Genetic Algorithm II (NSGA‐II)...
In this study, a reconstructed continuous current distribution is employed to synthesise circular (one ring) antenna arrays with sparseness characteristics. The authors proposal achieves the reproduction of from an expansion in orthogonal basis, taking desired radiation beam pattern as target function. To obtain characteristics, they density tapering technique that provides excitations and locations for each element. They report three numerical experiments show performance compare it other...
Modern evolutionary optimization techniques have aroused great interest among the scientific and technical community in a wide variety of fields for last years, because their ability to solve problems with non-linear non-convex dependence design parameters.In this paper comparison GA, PSO DE scannable circular antenna arrays is presented. The purpose contribution present comparative evaluation PSO, performance arrays. In case, we study behavior array factor considering amplitude phase...