A low cost, printed microwave based level sensor with integrated oscillator readout circuitry

Handle URI:
http://hdl.handle.net/10754/626054
Title:
A low cost, printed microwave based level sensor with integrated oscillator readout circuitry
Authors:
Karimi, Muhammad Akram ( 0000-0002-3723-6303 ) ; Arsalan, Muhammad; Shamim, Atif ( 0000-0002-4207-4740 )
Abstract:
This paper presents an extremely low cost, tube conformable, printed T-resonator based microwave level sensor, whose resonance frequency shifts by changing the level of fluids inside the tube. Printed T-resonator forms the frequency selective element of the tunable oscillator. Unlike typical band-pass resonators, T-resonator has a band-notch characteristics because of which it has been integrated with an unstable amplifying unit having negative resistance in the desired frequency range. Magnitude and phase of input reflection coefficient of the transistor has been optimized over the desired frequency range. Phase flattening technique has been introduced to maximize the frequency shift of the oscillator. With the help of this technique, we were able to enhance the percentage tuning of the oscillator manifolds which resulted into a level sensor with higher sensitivity. The interface level of fluids (oil and water in our case) causes a relative change in oscillation frequency by more than 50% compared to maximum frequency shift of 8% reported earlier with dielectric tunable oscillators.
KAUST Department:
Electrical Engineering Program; Integrated Microwave Packaging Antennas and Circuits Technology (IMPACT) Lab
Citation:
Karimi MA, Arsalan M, Shamim A (2017) A low cost, printed microwave based level sensor with integrated oscillator readout circuitry. 2017 IEEE MTT-S International Microwave Symposium (IMS). Available: http://dx.doi.org/10.1109/MWSYM.2017.8058980.
Publisher:
IEEE
Journal:
2017 IEEE MTT-S International Microwave Symposium (IMS)
Issue Date:
24-Oct-2017
DOI:
10.1109/MWSYM.2017.8058980
Type:
Conference Paper
Additional Links:
http://ieeexplore.ieee.org/document/8058980/
Appears in Collections:
Conference Papers; Integrated Microwave Packaging Antennas and Circuits Technology (IMPACT) Lab; Electrical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorKarimi, Muhammad Akramen
dc.contributor.authorArsalan, Muhammaden
dc.contributor.authorShamim, Atifen
dc.date.accessioned2017-10-30T08:39:53Z-
dc.date.available2017-10-30T08:39:53Z-
dc.date.issued2017-10-24en
dc.identifier.citationKarimi MA, Arsalan M, Shamim A (2017) A low cost, printed microwave based level sensor with integrated oscillator readout circuitry. 2017 IEEE MTT-S International Microwave Symposium (IMS). Available: http://dx.doi.org/10.1109/MWSYM.2017.8058980.en
dc.identifier.doi10.1109/MWSYM.2017.8058980en
dc.identifier.urihttp://hdl.handle.net/10754/626054-
dc.description.abstractThis paper presents an extremely low cost, tube conformable, printed T-resonator based microwave level sensor, whose resonance frequency shifts by changing the level of fluids inside the tube. Printed T-resonator forms the frequency selective element of the tunable oscillator. Unlike typical band-pass resonators, T-resonator has a band-notch characteristics because of which it has been integrated with an unstable amplifying unit having negative resistance in the desired frequency range. Magnitude and phase of input reflection coefficient of the transistor has been optimized over the desired frequency range. Phase flattening technique has been introduced to maximize the frequency shift of the oscillator. With the help of this technique, we were able to enhance the percentage tuning of the oscillator manifolds which resulted into a level sensor with higher sensitivity. The interface level of fluids (oil and water in our case) causes a relative change in oscillation frequency by more than 50% compared to maximum frequency shift of 8% reported earlier with dielectric tunable oscillators.en
dc.publisherIEEEen
dc.relation.urlhttp://ieeexplore.ieee.org/document/8058980/en
dc.subjectLevel Sensoren
dc.subjectMicrowave oscillatoren
dc.subjectT-resonatoren
dc.subjectprinted low-cost sensoren
dc.titleA low cost, printed microwave based level sensor with integrated oscillator readout circuitryen
dc.typeConference Paperen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentIntegrated Microwave Packaging Antennas and Circuits Technology (IMPACT) Laben
dc.identifier.journal2017 IEEE MTT-S International Microwave Symposium (IMS)en
dc.contributor.institutionEXPEC Advanced Research Centre, Dhahran, Saudi Aramco, KSAen
kaust.authorKarimi, Muhammad Akramen
kaust.authorShamim, Atifen
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