J. M. Geria

ORCID: 0000-0003-2715-3798
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About
Contact & Profiles
Research Areas
  • Superconducting and THz Device Technology
  • Radio Frequency Integrated Circuit Design
  • Physics of Superconductivity and Magnetism
  • Advanced Photonic Communication Systems
  • Radio Astronomy Observations and Technology
  • Power Systems and Technologies
  • Scientific Research and Discoveries
  • Quantum, superfluid, helium dynamics
  • Microwave Engineering and Waveguides
  • Power Line Communications and Noise
  • Dark Matter and Cosmic Phenomena
  • Cosmology and Gravitation Theories
  • Neutrino Physics Research
  • Semiconductor Lasers and Optical Devices
  • Advanced Mathematical Theories and Applications
  • Smart Parking Systems Research
  • Optical Network Technologies
  • Astrophysics and Cosmic Phenomena
  • Fractal and DNA sequence analysis

Karlsruhe Institute of Technology
2024

Consejo Nacional de Investigaciones Científicas y Técnicas
2024

Instituto de Tecnologías en Detección y Astropartículas
2023-2024

Abstract A novel system formed by a Microwave Superconducting Quantum Interference Device (SQUID) Multiplexer ( $$\mu$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>μ</mml:mi> </mml:math> MUX) and room temperature electronics employs frequency division multiplexing (FDM) technique to read out multiple cryogenic detectors. Since the detector signal is embedded in phase of SQUID signal, Digital Quadrature Demodulator (DQD) widely implemented recover it. However, DQD also...

10.1007/s10909-023-02993-z article EN cc-by Journal of Low Temperature Physics 2023-08-11

Abstract This work reports the performance evaluation of an SDR readout system based on latest generation (Gen3) AMD’s Radio-Frequency System-on-Chip (RFSoC) processing platform, which integrates a full-stack and powerful FPGA with up to 32 high-speed high-resolution 14-bit Digital-to-Analog Converters Analog-to-Digital Converters. The proposed uses previously developed multi-band, double-conversion IQ RF-mixing board targeting multiplexing factor approximately 1000 bolometers in bandwidth...

10.1007/s10909-024-03079-0 article EN cc-by Journal of Low Temperature Physics 2024-04-12

Abstract We describe a technique to optimize the dynamic performance of microwave SQUID multiplexer (µMUX)-based systems. These systems proved be adequate for reading out multiple cryogenic detectors simultaneously. However, requirement denser detector arrays increase sensitivity scientific experiments makes its design challenge. When modifying readout power, there is trade-off between decreasing signal-to-noise ratio (SNR) and boosting nonlinearities active devices. The latter characterized...

10.1007/s10909-024-03049-6 article EN cc-by Journal of Low Temperature Physics 2024-02-01

The Microwave SQUID Multiplexer ({\mu}MUX) is the device of choice for readout a large number Low-Temperature Detectors in wide variety experiments within fields astronomy and particle physics. While it offers multiplexing factors, system noise performance highly dependent on cold warm-readout electronic systems used to read out, as well demodulation domain parameters chosen. In order understand impact overall performance, first we extended available {\mu}MUX simulation frameworks including...

10.48550/arxiv.2406.06782 preprint EN arXiv (Cornell University) 2024-06-10

The Microwave SQUID Multiplexer (μMUX) is the device of choice for readout a large number low-temperature detectors in wide variety experiments within fields astronomy and particle physics. While it offers multiplexing factors, system noise performance highly dependent on cold- warm-readout electronic systems used to read out, as well demodulation domain parameters chosen. In order understand impact overall detection performance, first, we extended available μMUX simulation frameworks,...

10.1063/5.0222656 article EN Journal of Applied Physics 2024-09-19

In this work we present an application of the Goertzel Filter for channelization multi-tonal signals, typically used read-out cryogenic sensors which are multiplexed in frequency domain (FDM), by means Microwave Superconducting Quantum Interference Device (SQUID) Multiplexer ($μ$MUX). We demonstrate how implementing a bank many these filters, can be to perform input signal retrieve data added sensors. show approach implemented resource-efficient manner Field Programmable Gate Array (FPGA)...

10.48550/arxiv.2303.01356 preprint EN cc-by-sa arXiv (Cornell University) 2023-01-01

This work reports the performance evaluation of an SDR readout system based on latest generation (Gen3) AMD's Radio Frequency System-on-Chip (RFSoC) processing platform, which integrates a full-stack and powerful FPGA with up to 32 high-speed high-resolution 14-bit Digital-to-Analog Converters (DACs) Analog-to-Digital (ADCs). The proposed uses previously developed multi-band, double-conversion IQ RF-mixing board targeting multiplexing factor approximately 1,000 bolometers in bandwidth...

10.48550/arxiv.2311.03480 preprint EN other-oa arXiv (Cornell University) 2023-01-01

The Technical Quality of Service has been a constant concern in EDP Distribuicao. Between 2008 and 2010 the Portuguese Distribution System Operator (DSO) carried out significant efforts to improve index that measures quality service Portugal, Average Interruption Time (AIT). Currently focus is on reducing certain asymmetries still persist between different areas. In this context need carry extensive works secondary substations (MV/LV) arisen. Taking into account for quick less expensive...

10.1049/cp.2013.0881 article EN 22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013) 2013-01-01

The Q&U Bolometric Interferometer for Cosmology (QUBIC) is a novel kind of polarimeter optimized the measurement B-mode polarization Cosmic Microwave Back-ground (CMB), which one major challenges observational cosmology. signal expected to be order few tens nK, prone instrumental systematic effects and polluted by various astrophysical foregrounds can only controlled through multichroic observations. QUBIC designed address these issues with approach that combines advantages interferometry in...

10.48550/arxiv.2210.03161 preprint EN other-oa arXiv (Cornell University) 2022-01-01
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