Results 1 to 10 of about 137,818 (293)

A Reflective-Mode Phase-Variation Displacement Sensor [PDF]

IEEE Access, 2020
In this paper, a displacement sensor based on an open-ended step-impedance transmission line is reported. The sensor operates in reflection, and the output variable is the phase of the reflection coefficient.
Jonathan Munoz-Enano, Paris Velez, Lijuan Su, Marta Gil-Barba, Ferran Martin   +4 more
doaj   +7 more sources

Highly Sensitive Reflective-Mode Phase-Variation Permittivity Sensor Based on a Coplanar Waveguide Terminated With an Open Complementary Split Ring Resonator (OCSRR) [PDF]

IEEE Access, 2021
This paper presents a one-port reflective-mode phase-variation microwave sensor consisting of a coplanar waveguide (CPW) transmission line terminated with a grounded open complementary split ring resonator (OCSRR).
Lijuan Su, Jonathan Munoz-Enano, Paris Velez, Marta Gil-Barba, Pau Casacuberta, Ferran Martin   +5 more
doaj   +6 more sources

Low-Cost and Highly Sensitive Reflective-Mode Phase-Variation Sensor for Bacteria Detection

IEEE Access
This paper presents a reflective-mode planar microwave biosensor based on phase-variation allowing for the detection of low bacteria concentration. The sensor is a one-port coplanar waveguide (CPW) structure implemented by means of a pair of weakly ...
Ilona Piekarz, Jakub Sorocki, Witold Skowronski, Sabina Gorska, Slawomir Gruszczynski, Krzysztof Wincza, Pau Casacuberta, Paris Velez, Ferran Martin   +8 more
doaj   +4 more sources

Planar Phase-Variation Microwave Sensors for Material Characterization: A Review and Comparison of Various Approaches [PDF]

Sensors, 2021
Planar phase-variation microwave sensors have attracted increasing interest in recent years since they combine the advantages of planar technology (including low cost, low profile, and sensor integration with the associated circuitry for post-processing ...
Jonathan Muñoz-Enano, Jan Coromina, Paris Vélez, Lijuan Su, Marta Gil, Pau Casacuberta, Ferran Martín   +6 more
doaj   +4 more sources

Reflective-Mode Phase-Variation Submersible Sensor for Liquid Characterization

IEEE Transactions on Instrumentation and Measurement, 2023
A one-port reflective-mode microwave submersible sensor based on an open-ended step-impedance microstrip line configuration, operating at a single frequency, useful for the dielectric characterization of liquids and the measurement of liquid composition in binary mixtures, is proposed in this article.
Lijuan Su, Paris Velez, Pau Casacuberta   +2 more
exaly   +4 more sources

Phase-Variation Microwave Sensor for Permittivity Measurements Based on a High-Impedance Half-Wavelength Transmission Line

IEEE Sensors Journal, 2021
A phase-variation microwave sensor operating in transmission and implemented by means of a high-impedance half-wavelength sensing line is reported in this paper. The sensor is useful for dielectric constant measurements and dielectric characterization of materials.
Lijuan Su, Jonathan Muñoz-Enano, Paris Velez   +2 more
exaly   +4 more sources

Simultaneous Resolution and Dynamic Range Improvement in Microwave Phase-Variation Displacement Sensors [PDF]

فصلنامه علوم و فناوری فضایی
: In this paper, a reflective-mode phase-variation microwave moderate range displacement sensor is proposed. It consists of a reader which is a one-port microstrip line terminated with a matched load, and a movable resonator (etched in an independent ...
Amirhossein Karami Horestani, Ferran Paredes, Ferran Martín   +2 more
doaj   +2 more sources

Phase-Variation Microwave Displacement Sensor With Good Linearity and Application to Breath Rate Monitoring

IEEE Sensors Journal, 2023
This article presents a novel highly linear reflective-mode displacement sensor based on planar microwave technology. The sensor consists of two parts: 1) the stator, or reader, a one-port transmission line terminated with a matched load and 2) the movable part, or tag, a dielectric slab with an electric LC (ELC) resonator etched on it. In the proposed
Amirhossein Karami-Horestani, FERRÁN Paredes, FERRÁN Martin   +2 more
exaly   +4 more sources

Wirelessly Interrogated, Implantable Capacitive MEMS Sensors for Continuous Intraocular Pressure Monitoring [PDF]

Sensors
This work presents wirelessly interrogated microelectromechanical system (MEMS) capacitive sensors for continuous intraocular pressure (IOP) monitoring.
Liguan Li, Adnan Zaman, Ramesh Ayyala, Jing Wang   +3 more
doaj   +2 more sources

Portable Reflective-Mode Phase-Variation Microwave Sensor Based on a Rat-Race Coupler Pair and Gain/Phase Detector for Dielectric Characterization

IEEE Sensors Journal, 2023
This article presents a low-cost and portable phase-variation planar microwave sensor operating in reflective mode, where the output variable, the phase of the reflection coefficient of the one-port sensing element, is retrieved by means of a distributed circuit based on a pair of rat-race hybrid couplers and the associated electronics. This includes a
Paris Velez, FERRÁN Paredes, Pau Casacuberta   +2 more
exaly   +4 more sources