[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 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 …

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 …

Balanced microwave transmission lines, circuits, and sensors

F Martin, F Medina - IEEE Journal of Microwaves, 2022 - ieeexplore.ieee.org
This paper provides an overview of balanced (or differential-mode) structures operating at
microwaves, including common-mode suppression filters, balanced filters and circuits with …

Measurement of low‐loss aqueous solutions permittivity with high detection accuracy by a contact and free‐label resonance microwave sensor

M Navaei, P Rezaei, S Kiani - International Journal of …, 2023 - Wiley Online Library
In this paper, a microwave sensor is designed and built to measure the permittivity of
aqueous solutions. The samples used in this experiment are different purities of ethanol …

Reflective-mode phase-variation submersible sensor for liquid characterization

L Su, P Vélez, P Casacuberta… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
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 …

A symmetric bar chart-shape microwave sensor with high Q-factor for permittivity determination of fluidics

M Navaei, P Rezaei, S Kiani - International Journal of Microwave …, 2023 - cambridge.org
This paper introduces a symmetric bar chart-shape (SBCS) microwave sensor for measuring
permittivity of fluidic samples. For designing purposes, the introduced sensor was used …

Magnetodielectric material characterization using stepped impedance resonators

FT Alharbi, M Haq, L Udpa, Y Deng - IEEE Sensors Journal, 2022 - ieeexplore.ieee.org
Two resonance-based methods for magnetodielectric (MD) material characterization are
presented in this article using stepped impedance resonators (SIRs). A single SIR (SSIR) is …

Displacement sensors based on the phase of the reflection coefficient of a split ring resonator-loaded transmission line

Z Shaterian, M Mrozowski - IEEE Sensors Journal, 2022 - ieeexplore.ieee.org
In this article, novel displacement sensors using a microstrip loaded with a pair of split ring
resonators (SRRs) are proposed. It is shown that the phase of the reflection coefficient from …

Permittivity measurement of fluidics with high‐sensitivity by chandelier form microwave sensor

M Navaei, P Rezaei - Microwave and Optical Technology …, 2024 - Wiley Online Library
In this manuscript, a microwave resonance sensor (MRS) was presented composed of
interdigital structure, meander structure, chandelier‐form, and T‐shaped structure. The …