| Discrete Microwave Spectroscopy using Planar ResonatorThis work presents wideband harmonic based liquid sensing using planar microwave resonators. A thin layer LTCC substrate is utilized to design and fabricate a ring resonator sensor, monitoring its harmonics up to 40GHz. Non-constant permittivity frequency spectrum of liquids generate correlated nonlinear frequency shifts in the harmonic frequencies. This information can then be employed to backtrack the liquid properties and permittivity across a wideband frequency. Sample reading in a frequency range of 3GHz to 40 GHz represents a satisfactory distinction between different kinds of the liquids under the test. Using de-ionized (DI) water, methanol and propanol, different frequency responses are gathered over the full frequency range of 40 GHz for 5-sample points as reference harmonics.
University of Alberta | Publication | 2019-05-01 | Navid Hosseini, Baghelani, M., Mojgan Daneshmand |
| Microwave Sensor Array for Corrosion Prediction in Steel Tank BottomsV001T03A037 | Publication | 2018-11-06 | Deif, Sameir; Leier, Brent; Snow, Michael; Daneshmand, Mojgan; Sameir; Leier, Brent; Snow, Michael; Daneshmand, Mojgan; Deif, |
| Selective Measurement of Water Content in Multivariable Biofuel Using Microstrip Split Ring Resonators University of Alberta | Publication | 2020-01-01 | Baghelani, M., Navid Hosseini, Mojgan Daneshmand |
| Temperature Sensing in Harsh EnvironmentsSteam Assisted Gravity Drainage systems, or SAGD, are a vital piece of Alberta’s energy sector and the
subject of several other Future Energy Systems projects.
SAGD wells go deep underground, with one injecting steam into the oil reservoir to reduce its viscosity,
while the other collects the oil and pumps it to the surface. Reliable, robust sensors are required for
real-time monitoring of factors such as blockages, corrosion, pressure and temperature - each of which
can impact productivity and environmental safety.
Our project focuses on producing a temperature sensor which can operate as a standalone device, or as
an integrable component for temperature calibration of other sensors. | Activity | 2021-04-29 | Brent Leier |
| A novel miniaturized asymmetric CPW split ring resonator with extended field distribution pattern for sensing applicationsAPA: N Hosseini, SS Olokede, M Daneshmand, “A novel miniaturized asymmetric CPW split ring resonator with extended field distribution pattern for sensing applications”Sensors & Actuators A: Physical, 304, pp. 111769, https://doi.org/10.1016/j.sna.2019.111769. | Publication | 2020-04-01 | Navid Hosseini, Seyi Olokede, Mojgan Daneshmand |
| A Phase-Noise Reduced Microwave Oscillator Sensor With Enhanced Limit of Detection Using Active FilterPhase noise reduction | Publication | 2019-04-12 | "Abdolrazzaghi, Mohammad; Daneshmand, Mojgan; Mohammad; Daneshmand, Mojgan; Abdolrazzaghi, |
| A planar microwave resonator with odd resonance for calibration in permanent moisture sensing applicationsAPA: SS Olokede, ML. Neyestanak, M. Choo, M. Daneshmand, HE. Naguib, “A planar microwave resonator with odd resonance for calibration in permanent moisture sensing applications,” Appl. Phys. Lett. vol. 118, no. 13, pp. 144104. https://doi.org/10.1063/5.0034050 | Publication | 2021-04-01 | Seyi Olokede, Mortezza Lotfi Neyestanak, Marco Chu, Mojgan Daneshmand, H E Naguib |
| Artificial Intelligence Assisted Non-Contact Microwave Sensor for Multivariable Biofuel Analysis University of Alberta | Publication | 2020-01-01 | Baghelani, M., Navid Hosseini, Mojgan Daneshmand |
| Locally Strong-Coupled Microwave Resonator Using PEMC Boundary for Distant Sensing Applications University of Alberta | Publication | 2019-10-01 | Mehdi Nosrati, Zahra Abbasi, Baghelani, M., Sharmistha Bhadra, Mojgan Daneshmand |
| Non-contact real-time water and brine concentration monitoring in crude oil based on multi-variable analysis of microwave resonators University of Alberta | Publication | 2021-01-01 | Baghelani, M., Navid Hosseini, Mojgan Daneshmand |
| Non-recovery moisture sensor for breach integrity using the degenerate mode of planar microwave ring resonatorAPA: SS Olokede, M. Choo, ML. Neyestanak, M. Daneshmand, HE. Naguib, “Non-recovery Moisture Sensor for Breach Integrity Using the Degenerate Mode of Planar Microwave Ring Resonator” Sensors & Actuators A: Physical, 328, pp. 112775. https://doi:10.1016/j.sna.2021.112775. | Publication | 2021-09-01 | Seyi Olokede, Marco Chu, Mortezza Lotfi Neyestanak, Mojgan Daneshmand, Hani E Naguib |
| Noncontact high sensitivity chipless tag microwave resonator for bitumen concentration measurement at high temperatures University of Alberta | Publication | 2020-04-01 | Baghelani, M., Zahra Abbasi, Mojgan Daneshmand |
| Planar microwave resonator with electrodeposited ZnO thin film for ultraviolet detectionA ZnO thin film is electrodeposited on the conducting strips of a planar microwave ring resonator to enable the formation of a novel sensor for ultraviolet irradiation. The fabrication of the sensor involves a low-cost process that basically utilizes a printed circuit board and an aqueous precursor solution. The resonator with no ZnO coating operates with a resonant frequency of 6.2 GHz and a quality factor of 170. The time-resolved microwave photoresponse of the sensor to UV illumination, under ambient conditions, is assessed through measurements of the resonance profile of the S21 parameter. The resonance frequency exhibited a highly sensitive downshift of ~ 6 MHz after a UV illumination time of ~ 3 min. This downshift is mostly attributed to the change in the dielectric constant of the ZnO film caused largely by the additional creation of bound charges. The usually reported long-lived and persistent post-illumination effects were not observed. The measurements of the resonance amplitude carried out at 20% and 70% relative humidities revealed average excess carrier relaxation lifetimes of 213 s and 185 s, respectively. Concomitantly, the measured resonance frequency downshifts increased with increased humidity. These results highlight the difference in the interaction mechanisms of photogenerated carriers with water and oxygen molecules on the surface and grain boundaries of the ZnO film. To our knowledge, this UV irradiation sensor is the first ZnO-based sensor device implemented with planar microwave circuit technology. In addition, the capabilities demonstrated by this simple photo-sensing method to determine induced carrier lifetimes make it a valuable technique for an in-depth investigation of the material properties. University of Alberta | Publication | 2019-12-01 | M Benlamri, S Deif, Najia Mahdi, Baghelani, M., M H Zarifi, D W Barlage, Shankar, K., Mojgan Daneshmand |
| Printed concave-like slot for bandwidth enhancement of inset-fed patch antenna on metallic surfacesAPA: Olokede SS, Deif, S, Daneshmand, M. Printed concave‐like slot for bandwidth enhancement of inset‐fed patch antenna on metallic surfaces. Microw Opt Technol Lett. 2021; 1– 8. https://doi.org/10.1002/mop.32815 | Publication | 2021-02-01 | Seyi Olokede, Sameir Deif, Mojgan Daneshmand |
| Selective real-time non-contact multi-variable water-alcohol-sugar concentration analysis during fermentation process using microwave split-ring resonator based sensor University of Alberta | Publication | 2021-01-01 | Navid Hosseini, Baghelani, M. |
| Selective Volume Fraction Sensing Using Resonant-Based Microwave Sensor and its Harmonics University of Alberta | Publication | 2020-01-01 | Navid Hosseini, Baghelani, M., Mojgan Daneshmand |
| Stepped-impedance slotted microstrip-fed patch antenna for on-metal radio frequency identification applicationsAPA: Deif, S, Olokede, SS, Nosrati, M, Daneshmand, M. Stepped‐impedance slotted microstrip‐fed patch antenna for on‐metal radio frequency identification applications. Microw Opt Technol Lett. 2020; 62: 3324– 3332. https://doi.org/10.1002/mop.32438 | Publication | 2020-06-01 | Samier Deif, Seyi Olokede, Mehdi Nosrati, Mojgan Daneshmand |
