Back‐to‐back aperture‐ and gap‐coupled discontinuities integration for band‐pass filter design

Nosrati, Amir; Mohammad-Taheri, Mahmoud; Nosrati, Mehdi

doi:10.1049/el.2020.1221

Cited by 7 publications

(4 citation statements)

References 10 publications

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“…Microwave resonators not only are used for communication systems [39][40][41][42][43][44] , but they are also used as sensors for multiple applications [45][46][47][48] . Compared to the conventional microwave resonators, Surface plasmonic resonators are reported as highly sensitive resonators by which the EM waves can strongly interact with the surrounding medium [49][50][51] .…”

Section: Microwave Plasmonic Fano Resonance Sensormentioning

confidence: 99%

On-body non-invasive glucose monitoring sensor based on high figure of merit (FoM) surface plasmonic microwave resonator

Soltanian,

Nosrati,

Mobayen

et al. 2023

Sci Rep

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High-figure of merit (FoM) plasmonic microwave resonator is researched as a non-invasive on-body sensor to monitor the human body's blood glucose variation rate in adults for biomedical applications, e.g., diabetic patients. The resonance frequencies of the proposed sensor are measured to be around $${f}_{01}=3.25$$ f 01 = 3.25 GHz and $${f}_{01}=4.67$$ f 01 = 4.67 GHz over the frequency band of DC to 6GHz which are suitable for monitoring interstitial fluid (ISF) changing rate. The $$40\times 40 {\mathrm{mm}}^{2}$$ 40 × 40 mm 2 sensor is experimentally wrapped on the human body arm to monitor the blood glucose changing rate via amplitude and frequency variations of the sensor. Amplitude variation and frequency shift are measured to be around 7 dB and 30 MHz, respectively. The measured results demonstrate the high precision of the proposed approach to depict a valid diagram for glucose changing rate due to good impedance matching of the designed microwave sensor and human body. The sensor is shown to enhance the sensitivity by a factor of 5 compared to the conventional ones.

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Section: Microwave Plasmonic Fano Resonance Sensormentioning

confidence: 99%

On-body non-invasive glucose monitoring sensor based on high figure of merit (FoM) surface plasmonic microwave resonator

Soltanian,

Nosrati,

Mobayen

et al. 2023

Sci Rep

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show abstract

“…Two BPFs are designed based on the integration of aperture‐ and gap‐coupled discontinuities in Section 2 [4]. Aperture‐coupled discontinuity integrated with the SIW platform is initially employed to realise a TP with the desired resonance frequency (see Section 2.1).…”

Section: Bpfs Based On Integrated Aperture‐ and Gap‐coupled Discontin...mentioning

confidence: 99%

“…Given f 0 , f z , and FBW, the corresponding lumped-components are calculated using (4)(5)(6)(7)(8)(9)(10)(11)(12). The filter is designed to operate above the cut-off frequency of the SIW at the resonance frequency of f 0 = 2 GHz.…”

Section: Bandpass Filters Based On Gap-coupled Discontinuitymentioning

confidence: 99%

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Bandpass filters based on integrated aperture‐ and gap‐coupled discontinuities

Nosrati

Mohammad-Taheri

2022

IET Communications

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An electromagnetic coupling mechanism is discussed for distributed‐element aperture‐ and gap‐coupled discontinuities based on rigorous lumped‐element equivalent circuit analysis. The two discontinuities are analysed in terms of their transmission poles and transmission zeros for the selectivity enhancement of microwave and or millimetre‐wave components. The integration of these two discontinuities is put forward for bandpass filter design. A frequency‐dependent lumped‐element equivalent circuit is employed to study the behaviour of the two distributed‐element discontinuities in the transverse direction. Bandpass filters are characterised based on the dual aperture‐ and gap‐coupled discontinuities integrated within substrate integrated waveguide structures. It is shown that multiple transmission zeros close to transmission poles are realised due to the magnetic and electric field cancelation in the gap‐coupled discontinuity, while the aperture‐coupled discontinuity contributes to a resonator with a higher quality factor. The integration of both aperture‐ and gap‐coupled discontinuities shows the priority of this kind of microwave resonator in terms of selectivity, size, and upper stopband in comparison with the conventional aperture‐coupled one.

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Reduction of Electromagnetic Field Distortion in Microwave Sensors in Contact With Skin Tissues

Nosrati,

Soltanian

2024

IEEE Sensors J.

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Back‐to‐back aperture‐ and gap‐coupled discontinuities integration for band‐pass filter design

Cited by 7 publications

References 10 publications

On-body non-invasive glucose monitoring sensor based on high figure of merit (FoM) surface plasmonic microwave resonator

On-body non-invasive glucose monitoring sensor based on high figure of merit (FoM) surface plasmonic microwave resonator

Bandpass filters based on integrated aperture‐ and gap‐coupled discontinuities

Reduction of Electromagnetic Field Distortion in Microwave Sensors in Contact With Skin Tissues

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