[HTML][HTML] Techniques to improve the performance of planar microwave sensors: A review and recent developments

M Abdolrazzaghi, V Nayyeri, F Martin - Sensors, 2022 - mdpi.com
Planar microwave sensors have become increasing developed in recent decades,
especially in material characterization (solid/liquid) as they provide regions highly sensitive …

Microwave planar resonant solutions for glucose concentration sensing: A systematic review

CG Juan, B Potelon, C Quendo, E Bronchalo - Applied Sciences, 2021 - mdpi.com
Featured Application Updated review of microwave planar resonant sensors for glucose
concentration tracking, sorted by sensing parameter and including relative sensitivity to …

Microwave substrate integrated waveguide resonator sensor for non-invasive monitoring of blood glucose concentration: Low cost and painless tool for diabetics

S Kiani, P Rezaei - Measurement, 2023 - Elsevier
In this study, a microwave resonant sensor with an operation frequency of 9 GHz and a
quality factor of 240 has been designed, fabricated and tested by fingertips of the users to …

Patch antenna sensor for wireless ice and frost detection

R Kozak, K Khorsand, T Zarifi, K Golovin, MH Zarifi - Scientific Reports, 2021 - nature.com
A patch antenna sensor with T-shaped slots operating at 2.378 GHz was developed and
investigated for wireless ice and frost detection applications. Detection was performed by …

Portable reflective-mode phase-variation microwave sensor based on a rat-race coupler pair and gain/phase detector for dielectric characterization

P Vélez, F Paredes, P Casacuberta… - IEEE Sensors …, 2023 - ieeexplore.ieee.org
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 …

Circuit analysis of a coplanar waveguide (CPW) terminated with a step-impedance resonator (SIR) for highly sensitive one-port permittivity sensing

P Casacuberta, P Vélez, J Muñoz-Enano, L Su… - IEEE …, 2022 - ieeexplore.ieee.org
This paper presents a single-frequency reflective-mode phase-variation microwave sensor
devoted to the dielectric characterization of materials. The device is implemented in …

Highly sensitive reflective-mode phase-variation permittivity sensors using coupled line sections

P Casacuberta, P Vélez, J Muñoz-Enano… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
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 …

High-sensitivity detection of solid and liquid dielectrics using a branch line coupler sensor

A Ebrahimi, K Ghorbani - IEEE Transactions on Microwave …, 2023 - ieeexplore.ieee.org
This article presents a sensor based on branch line couplers for detection of dielectric
samples. The two branches of the coupler are used as sensing elements, where one of them …

Frequency-variation sensors for permittivity measurements based on dumbbell-shaped defect ground structures (DB-DGS): Analytical method and sensitivity analysis

J Muñoz-Enano, P Vélez, M Gil… - IEEE Sensors Journal, 2022 - ieeexplore.ieee.org
It is shown in this paper that a microstrip line loaded with a dumbbell-shaped defect ground
structure (DB-DGS) is useful for complex permittivity measurements. The working principle of …

A high-resolution reflective microwave planar sensor for sensing of vanadium electrolyte

N Kazemi, K Schofield, P Musilek - Sensors, 2021 - mdpi.com
Microwave planar sensors employ conventional passive complementary split ring
resonators (CSRR) as their sensitive region. In this work, a novel planar reflective sensor is …