ArticleScientific reports2025
Diplexer based microwave sensor for noninvasive detection of sucrose and sorbitol in pharmaceutical syrups.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- High-sensitivity dual-band microstrip sensor for oil-water mixture analysis with RBF neural network optimization.Scientific reports · 2026Article
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3 authors.
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Abstract
In this study, a novel low-pass/band-pass diplexer-based microwave sensor is introduced for the first time as a high-sensitivity platform for the detection and quantification of sucrose and sorbitol concentrations in pharmaceutical syrups. The proposed sensor features a compact footprint of 13.1 mm × 15.84 mm and integrates two distinct filtering paths, each optimized for specific spectral ranges. The band-pass and low-pass filters are constructed using a combination of M-notch-shaped and semicircular-shaped resonators, with the latter enhanced by integrated spiral lines to reduce both physical dimensions and resonant frequency. This geometric optimization enables stronger field confinement and improved sensitivity. An equivalent lumped-element LC circuit model is also presented to accurately predict the resonators' behavior and validate the electromagnetic performance. The sensor's functionality was experimentally verified using three commercially available pharmaceutical syrups-Diphenhydramine, Guaifenesin, and Salbutamol-each with varying concentrations of sweetening agents. The sensor achieved a maximum sensitivity of 9312.5 MHz/(g mL
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