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 …

Microwave split ring resonator sensor for determination of the fluids permittivity with measurement of human milk samples

M Navaei, P Rezaei, S Kiani - Radio Science, 2022 - ieeexplore.ieee.org
In this paper, the human milk dielectric constant by a microwave sensor has been evaluated.
The proposed sensor is result of coupling between a simple microstrip line and a split ring …

Simple and high-sensitivity dielectric constant measurement using a high-directivity microstrip coupled-line directional coupler

ZR Omam, V Nayyeri… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
Simple methods using a microstrip coupled-line directional coupler (CLDC) are presented
for dielectric constant measurements. The material under test (MUT) is placed on the …

An improved split-ring resonator-based sensor for microfluidic applications

W Ye, DW Wang, J Wang, G Wang, WS Zhao - Sensors, 2022 - mdpi.com
This study proposes an ultrahigh-sensitivity split-ring resonator-based microwave sensor for
retrieving the complex permittivity of liquid samples. An interdigital capacitor structure was …

A novel coupling mechanism for CSRRs as near-field dielectric sensors

AM Albishi - Sensors, 2022 - mdpi.com
This work proposes a novel coupling mechanism for a complementary split-ring resonator as
a planar near-field microwave sensor for dielectric materials. The resonator is etched into …

Toward a low-cost portable reader for reflective-mode microwave sensors

M Elgeziry, F Costa, P Vélez, F Paredes… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Microwave sensors are typically characterized using a vector network analyzer (VNA) that
measures the scattering parameters of the device under test (DUT) over a wide frequency …

Wide-band label-free selective microwave resonator-based sensors for multi-component liquid analysis

M Baghelani - IEEE Sensors Journal, 2021 - ieeexplore.ieee.org
In this work, a novel method for non-invasive, label-free, multi-variable volumetric
concentration analysis of mixtures is presented based on wide-band microwave resonators …

A low-cost and accurate microwave sensor system for permittivity characterization

A Pourafzal, T Roi-Taravella, M Cheffena… - IEEE Sensors …, 2022 - ieeexplore.ieee.org
A novel low-cost microwave sensor system is proposed for accurate sensing of the real
relative permittivity of materials under test (MUT). The proposed solution eliminates the need …

A microwave sensing system combination of interdigital structure (IDS)-based microstrip line and RF circuits for extracting complex permittivity of liquid samples

WJ Wu, WS Zhao, W Wang - Sensors and Actuators A: Physical, 2024 - Elsevier
In this manuscript, a microwave sensing system for extracting complex permittivity of binary
aqueous solutions based on a modified microstrip line with interdigital structure (IDS) etched …

Highly sensitive phase-variation microwave sensor operating in transmission based on an open split ring resonator (OSRR)

N Kurniawati, P Vélez, P Casacuberta, L Su… - IEEE Sensors …, 2024 - ieeexplore.ieee.org
This article presents a sensor able to detect small changes in the dielectric constant of its
surrounding with regard to a reference (REF) value. The sensor operates in transmission, is …