Browsing by Author "Gecim, H.S."

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Citation - Scopus: 0
Design and Modeling Interdigitated Capacitor - Spiral Inductor Resonator for Optical Pressure Sensor
(Institute of Electrical and Electronics Engineers Inc., 2021) Demirel, M.; Duyguluer, G.; Öztürk, M.; Salmanogli, A.; Gecim, H.S.; 182579
In this study, an optical pressure sensor is designed to sense a force. To achieve that, an interdigitated capacitor connected to a spiral inductor that oscillates at GHz region is proposed to be designed. To sense a force with very low amplitude, some different materials are applied as a dielectric material between the layers of the interdigitated capacitor. Thus, by applying the force, the circuit's capacitance is changed due to the displacement of the selected dielectric. This leads to change of the circuit's scattering parameters which lets to sense the lowest scale of the pressure possible. For simulation, the circuit is designed in COMSOL, theoretically studied the scattering parameters and the effect of the force on the circuit characteristic and finally, Advanced Design System is used to optimize the parameters for this specific aim. © 2021 Chamber of Turkish Electrical Engineers.
Citation - Scopus: 0
Design and Modeling of Very Narrow Band-pass Radio Frequency Filter for Optical Pressure Sensor
(Institute of Electrical and Electronics Engineers Inc., 2021) Ispak, T.S.; Basarancr, G.; Ceylan, S.; Salmanogli, A.; Gecim, H.S.; 182579
In this study, an optical pressure sensor is designed to sense a force on the scale of 100 nN. For this purpose, a very narrow radio frequency band-pass filter is designed and modeled to detect the optical pressure force. The center frequency of the filter is fixed in L-band. Thus, by applying an external force, the circuit's characteristics such as scattering parameters and the center frequency of the filter is changed. That is the method particularly employed to sense a very low scale optical pressure. In this study, the open-stub technique is used to design the radio frequency filter and results are compared with the lumped element-based circuit models. Also, the circuit design is simulated in COMSOL Multiphysics, and the scattering parameters are studied. Finally, the circuit is optimized for the specific aim using Advanced Design System software. © 2021 Chamber of Turkish Electrical Engineers.
Citation - Scopus: 20
Entanglement Sustainability in Quantum Radar
(Institute of Electrical and Electronics Engineers Inc., 2020) Salmanogli, A.; Gokcen, D.; Gecim, H.S.; 182579
In this study, some important parts of a quantum radar are designed using the quantum electrodynamics theory and significantly focused on entanglement conservation. Quantum radar is generally defined as a detection sensor that utilizes the microwave photons like a classical radar and simultaneously employs quantum phenomena to improve detection, identification, and resolution capabilities. However, the entanglement is so fragile, unstable, and difficult to preserve for a long time. Also, more importantly, the entangled states have a tendency to leak away due to the noise. The points mentioned enforces that the entangled states should be carefully studied at each step of the quantum radar detection processes such as the creation of the entangled photons in the tripartite system, the amplification of the photons, the propagation into the atmosphere, and the reflection from the target. At each step, the parameters related to the real mediums and target material can affect the entangled states to leak away easily. The results of simulations indicate that the features of the tripartite system and amplifier are so important to lead the detected photons to remain entangled with the optical modes. Nonetheless, it is found that a lot of entangled photons lose the related non-classical correlation. © 2020 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See https://www.ieee.org/publications/rights/index.html for more information.