Results 271 to 280 of about 137,818 (293)

Phase-Variation Microwave Displacement Sensor with High Resolution, Sensitivity, and Dynamic Range

2024 18th European Conference on Antennas and Propagation (EuCAP)
Amirhossein Karami-Horestani, FERRÁN Paredes, FERRÁN Martin   +2 more
exaly   +2 more sources

Open-Ended-Line Reflective-Mode Phase-Variation Sensors for Dielectric Constant Measurements

2020 IEEE SENSORS, 2020
This paper reports a detailed analysis of reflective-mode phase-variation sensors based on open-ended microstrip lines. These sensors are useful for measuring dielectric constants or other variables related to it (e.g., material or liquid composition).
Jonathan Muñoz-Enano, Pau Casacuberta, Lijuan Su, Paris Vélez, Marta Gil, Ferran Martín   +5 more
openaire   +1 more source

Capacitively-Loaded Slow-Wave Transmission Lines for Sensitivity Improvement in Phase-Variation Permittivity Sensors

2020 50th European Microwave Conference (EuMC), 2021
This paper proposes a strategy to implement permittivity sensors exhibiting high sensitivity. The considered structures belong to the category of microwave sensors based on phase variation. In such devices, the dielectric constant of the material under test (MUT) is inferred from the phase variation experienced, e.g., by a transmission line, when the ...
J. Coromina, J. Munoz-Enano, P. Velez, A. Ebrahimi, J. Scott, K. Ghorbani, F. Martin   +6 more
openaire   +1 more source

Effects of Losses on the Sensitivity of Reflective-Mode Phase-Variation Liquid Sensors

IEEE Transactions on Microwave Theory and Techniques
This article is focused on the analysis of the effects of losses on the sensitivity of reflective-mode phase-variation liquid sensors implemented by means of an open-ended (either quarter-wavelength or half-wavelength) transmission line distributed resonator (the sensing element) cascaded to a set of high/low impedance inverters (implemented by means ...
Paris Vélez, Xavier Canalias, Jonathan Muñoz-Enano, Pau Casacuberta, Lijuan Su, Ferran Martín   +5 more
openaire   +3 more sources

A Novel Differential Microwave Sensor Based on Reflective-Mode Phase Variation of Stepped-Impedance Transmission Lines for Extracting Permittivity of Dielectric Materials

IEEE Sensors Journal
Wen-Jing Wu, Wen-Sheng Zhao, Wensong Wang   +2 more
exaly   +2 more sources

Transmission-Mode Phase-Variation Microwave Sensor Applied to Highly Sensitive Micrometer-Scale Thickness Measurements

IEEE Sensors Journal
This article proposes a highly sensitive two-port single-frequency permittivity sensor operating in transmission. The device consists of a shunt-connected short-circuited quarter-wavelength resonator (the sensing element) sandwiched between a symmetric configuration of cascaded impedance inverters with alternating high and low impedance.
Xavier Canalias, Paris Vélez, Pau Casacuberta, Lijuan Su, Nazmia Kurniawati, Ferran Martín   +5 more
openaire   +2 more sources

Phase Variation Microfluidic Permittivity Sensor Using a Dispersive Transmission Line

2022 IEEE Sensors, 2022
Amir Ebrahimi 0002, Jonathan Muñoz-Enano, Paris Vélez, James R. Scott 0001, Kamran Ghorbani, Ferran Martín   +5 more
openaire   +1 more source

Reflective-Mode Phase-Variation Permittivity Sensors Based on Coupled Resonators

2022 IEEE Sensors, 2022
Pau Casacuberta, Paris Vélez, Jonathan Muñoz-Enano, Lijuan Su, Marta Gil, Ferran Martín   +5 more
openaire   +1 more source

Highly-Sensitive Microwave Phase-Variation Permittivity Sensors

2023 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC), 2023
Pau Casacuberta, Paris Vélez, Jonathan Muñoz-Enano, Lijuan Su, Xavier Canalías, Ferran Martín   +5 more
openaire   +1 more source

Analytical Design of Phase Variation-Based Dielectric Constant Sensors

2023 53rd European Microwave Conference (EuMC), 2023
Zahra Mehrjoo, Amir Ebrahimi, Kamran Ghorbani   +2 more
openaire   +1 more source