Determination of salinity and sugar concentration using microwave sensor

Rahman, Md. Naimur; Hassan, S.; Samsuzzaman, M.; Singh, Mandeep Singh Jit; Islam, Mohammad Tariqul

doi:10.1002/mop.31588

Cited by 11 publications

(4 citation statements)

References 7 publications

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“…For example, a sectorial horn can be created by flaring the E and H planes. In the same vein, a pyramidal horn can be formed when the waveguide is flared in both dimensions, or a conical horn can be produced by flaring a circular waveguide [ 87 , 88 ].…”

Section: Types Of Antennasmentioning

confidence: 99%

Synthesis, Characterization and Development of Energy Harvesting Techniques Incorporated with Antennas: A Review Study

Ibrahim

Singh

Al‐Bawri

et al. 2020

Sensors

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The investigation into new sources of energy with the highest efficiency which are derived from existing energy sources is a significant research area and is attracting a great deal of interest. Radio frequency (RF) energy harvesting is a promising alternative for obtaining energy for wireless devices directly from RF energy sources in the environment. An overview of the energy harvesting concept will be discussed in detail in this paper. Energy harvesting is a very promising method for the development of self-powered electronics. Many applications, such as the Internet of Things (IoT), smart environments, the military or agricultural monitoring depend on the use of sensor networks which require a large variety of small and scattered devices. The low-power operation of such distributed devices requires wireless energy to be obtained from their surroundings in order to achieve safe, self-sufficient and maintenance-free systems. The energy harvesting circuit is known to be an interface between piezoelectric and electro-strictive loads. A modern view of circuitry for energy harvesting is based on power conditioning principles that also involve AC-to-DC conversion and voltage regulation. Throughout the field of energy conversion, energy harvesting circuits often impose electric boundaries for devices, which are important for maximizing the energy that is harvested. The power conversion efficiency (PCE) is described as the ratio between the rectifier’s output DC power and the antenna-based RF-input power (before its passage through the corresponding network).

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Section: Types Of Antennasmentioning

confidence: 99%

Synthesis, Characterization and Development of Energy Harvesting Techniques Incorporated with Antennas: A Review Study

Ibrahim

Singh

Al‐Bawri

et al. 2020

Sensors

Self Cite

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“…Resonator‐based microwave sensors are playing increasingly important roles in various fields such as the medical and chemical industries 1–3 . The physical quantities can be measured by the variations in the resonant frequency, phase, and amplitude.…”

Section: Introductionmentioning

confidence: 99%

“…Resonator-based microwave sensors are playing increasingly important roles in various fields such as the medical and chemical industries. [1][2][3] The physical quantities can be measured by the variations in the resonant frequency, phase, and amplitude. To achieve highsensitivity measurement, the change rate of the resonator's characteristic variables should be large as possible.…”

Section: Introductionmentioning

confidence: 99%

An ultrahigh‐sensitivity microwave angular displacement sensor with a wide dynamic range

Lin

Wang

Zhao

et al. 2022

Micro & Optical Tech Letters

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A microwave angular displacement sensor with dynamic range up to 180°and ultrahigh sensitivity is designed and fabricated. In the proposed sensor, a stator is designed for reference and a rotatable rotor is attached to it to implement real-time measurement of the rotation angle. As the rotor is attached to the stator, a CSRR-like resonant structure would be formed, with the resonant frequency linearly changing with the angular displacement. The measurement results show that the resonant frequency of the designed angular displacement sensor increases from 2.398 to 6.348 GHz linearly as the angle varies from 0°to 180°, with an excellent sensitivity of 21.94 MHz/°a chieved.

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“…At present, there have been many physical techniques reported to measure the salinity of aqueous solutions, such as the electrical conductivity measurement [11][12][13], optical sensing [14][15][16][17][18], ultrasonic velocity measurement [19], and microwave sensing [20][21][22][23]. The measuring and sensing principles are based on the dependence of conductivity, refractive index, or microwave dielectric properties on the salinity of aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Defective Microwave Photonic Crystals for Salinity Detection

Zhu

Yang

2021

Coatings

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In this paper, defective microwave photonic crystals (MPCs) are designed to sense the salinity of aqueous solutions. The defective MPC sensors are constructed by two kinds of microwave dielectric layers and one defective salt solution layer. Transfer matrix method (TMM) for lossy medium is developed to calculate the transmittance spectra of the sensors. It is found that the peak transmittance of both the defective resonance within the microwave band gap (MBG) and transmitting modes outside the MBG monotonously decrease with the increase of salinity, while the resonant and transmitting mode frequencies remain unchanged. By comparing the four MPC sensor structures, the first transmitting mode in the upper frequency band outside the MBG of the 15-layer MPC sensor has the largest salinity sensing range from 0 to 40‰ with relative stable detecting sensitivity. The sensing principle is based on the fact that the dielectric loss factor of saline solution is much more sensitive to salinity than the dielectric constant in the microwave frequency band. The sensitivity, quality factor, and salinity detection range of the MPC sensors are calculated and compared. The reported defective MPC sensors are suitable to be used for non-contact salinity detection.

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Determination of salinity and sugar concentration using microwave sensor

Cited by 11 publications

References 7 publications

Synthesis, Characterization and Development of Energy Harvesting Techniques Incorporated with Antennas: A Review Study

Synthesis, Characterization and Development of Energy Harvesting Techniques Incorporated with Antennas: A Review Study

An ultrahigh‐sensitivity microwave angular displacement sensor with a wide dynamic range

Defective Microwave Photonic Crystals for Salinity Detection

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