Analysis and Performance Assessment of a Real-Time Correction Pseudo-Correlation Microwave Radiometer for Medical Applications

A new configuration of a pseudo-correlation type radiometer is proposed for a microwave biomedical application, such as diabetic foot neuropathy. The new approach as well as its simulated performance are thoroughly assessed using commercial off-the-shelf components and custom designed subsystems. We...

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Bibliographic Details
Published inElectronics (Basel) Vol. 10; no. 12; p. 1427
Main Authors Villa, Enrique, Aja, Beatriz, de la Fuente, Luisa, Artal, Eduardo, Arteaga-Marrero, Natalia, González-Pérez, Sara, Ruiz-Alzola, Juan
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 14.06.2021
Subjects
Biomedical materials
Calibration
Commercial off-the-shelf technology
Configurations
Couplers
Customization
Design
Diabetes
Dielectric properties
Foot diseases
Magnetic resonance imaging
Measurement techniques
Noise
Noise temperature
Performance assessment
Radiation
Radiometers
Receivers & amplifiers
Skin
Subsystems
Temperature
Tissues
X-rays
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Summary:A new configuration of a pseudo-correlation type radiometer is proposed for a microwave biomedical application, such as diabetic foot neuropathy. The new approach as well as its simulated performance are thoroughly assessed using commercial off-the-shelf components and custom designed subsystems. We configured a pseudo-correlation receiver, centred at 3.5 GHz, to validate the proposal, comparing its simulated response with a measured alternative based on a 90∘ hybrid coupler pseudo-correlation prototype. We custom designed a balanced Wilkinson power divider and a 180∘ hybrid coupler to fulfil the receiver’s requirements. The proposed configuration demonstrated an improved noise temperature response. The main advantage is to enable the recalibration of the receiver through simultaneous measurable output signals, proportional to each input signal, as well as the correlated response between them.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics10121427