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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   +6 more sources

A Discussion on Sensitivity Optimization in Reflective-Mode Phase-Variation Permittivity Sensors Based on Semi-Lumped Resonators

Sensors
Typically, the operating frequency in single-frequency reflective-mode phase-variation permittivity sensors based on semi-lumped resonators (e.g., step-impedance resonators—SIRs) is set to the resonance frequency of the sensing resonator when it is ...
Lijuan Su, Paris Vélez, Pau Casacuberta, Xavier Canalias, Nazmia Kurniawati, Ferran Martín   +5 more
doaj   +6 more sources

Microstrip Configurations of Reflective-Mode Phase-Variation Permittivity Sensors Based on Weakly Coupled Step Impedance Resonators (SIR): An Analysis to the Light of Circuit Duality

IEEE Access
This paper presents and experimentally validates various topologies of one-port reflective-mode phase-variation permittivity sensors based on weakly coupled step impedance resonators (SIRs), the sensing elements, implemented in microstrip technology. The
Joaquim Borras-Sarsa, Pau Casacuberta, Paris Velez, Lijuan Su, Xavier Canalias, Ferran Martin   +5 more
doaj   +5 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   +4 more sources

Highly Sensitive Reflective-Mode Phase-Variation Permittivity Sensors Using Coupled Line Sections

IEEE Transactions on Microwave Theory and Techniques, 2023
Highly sensitive permittivity sensors operating in reflection and exploiting phase variation are presented in this article. The sensors are one-port structures implemented by means of a pair of coupled lines, the sensitive region, with an appropriate termination.
Pau Casacuberta, Paris Velez, Jonathan Muñoz-Enano   +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

Highly Sensitive Phase Variation Sensors Based on Step-Impedance Coplanar Waveguide (CPW) Transmission Lines

IEEE Sensors Journal, 2021
Reflective-mode step-impedance transmission line based sensors for dielectric characterization of solids or liquids have been recently proposed. In this article, in order to further increase the sensitivity, the sensor is implemented in coplanar waveguide (CPW technology), and this constitutes the main novelty of this work.
Lijuan Su, Jonathan Muñoz-Enano, Paris Velez   +2 more
exaly   +3 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

Losses Assisted Sensitivity Enhancement in Reflective-Mode Phase-Variation Permittivity Sensors Based on Weakly Coupled Distributed Resonators

IEEE Sensors Letters, 2023
This letter demonstrates that losses [including substrate losses and losses in the material under test (MUT)] can be beneficial to boost the sensitivity in one-port reflective-mode phase-variation planar permittivity sensors based on a pair of weakly coupled quarter-wavelength resonators (the sensing elements).
Pau Casacuberta, Paris Velez, Jonathan Muñoz-Enano   +2 more
exaly   +4 more sources

On the Sensitivity of Reflective-Mode Phase-Variation Sensors Based on Open-Ended Stepped-Impedance Transmission Lines: Theoretical Analysis and Experimental Validation

IEEE Transactions on Microwave Theory and Techniques, 2021
Altres ajuts: Universidad Politécnica de Madrid Young Researchers (Grant Number: VJIDOCUPM18MGB) i ICREA This article presents an exhaustive study of the sensitivity in reflective-mode phase-variation sensors based on an open-ended transmission line with a step-impedance discontinuity. Such discontinuity delimits the sensing region (which extends up to
Jonathan Muñoz-Enano, Paris Velez, Lijuan Su   +2 more
exaly   +3 more sources