Heba Mahmoud Yassin

Teaching Assistant

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Heba Yassin was born in Cairo, Egypt. She received a B.Sc. degree in electronics and communications engineering from the Faculty of Engineering, Cairo University, Giza, Egypt, in 2018. She is currently pursuing an M.Sc. degree with the Nano-Electronics Integrated System Center (NISC), Nile University. She is a teaching assistant at the Faculty of Engineering and Applied Sciences, Nile University. Her research interests include digital electronics, plasmonic nanoparticles, photovoltaic, renewable energy, fractional calculus, and encryption systems.

Recent Publications

α -order universal filter realization based on single input multi-output differential voltage current conveyor

Two voltage-mode topologies single input multi-output universal fractional filters with high input impedance are proposed. The proposed analog filters consist of three DVCC+ blocks, two grounded capacitors and two resistors targeting the minimum passive elements. The proposed topologies provide a realization for all standard fractional filter functions (HP, LP, BP, AP and notch filter). The effect

Circuit Theory and Applications

Implementation and analysis of tunable fractional-order band-pass filter of order 2α

This paper proposes a new design of a 2α-order fractional-order band-pass filter with tunability feature. The proposed filter is approximated with the Continued Fraction Expansion and Matsuda second-order approximations. The realized filter transfer function is based on the Inverse Follow the Leader Feedback configuration, with Operational Transconductance Amplifiers as active elements. As a

Circuit Theory and Applications

Modified P3HT:PCBM Active Material with LiF Vertical Cylinders for Organic Solar Cells

In this paper, we introduce active material for an organic solar cell with a modified composition. A combination of P3HT: PCBM with parallel vertical LiF cylinders formulate the active material structure. The collection efficiency in the active material reaches 92.2%. The operating wavelength where the maximum collection efficiency occurs is adjusted and matched with the wavelength where the

Energy and Water
Mechanical Design

J-V characteristics of plasmonic photovoltaics with embedded conical and cylindrical metallic nanoparticles

Plasmonic photovoltaics (PVs) are promising structures that improve thin-film photovoltaics performance, where optical absorption is improved via embedding metallic nanoparticles in the PV's active layer to trap the incident optical wave into the photovoltaic cell. The presented work investigates the design of PV with both structures of conical and cylindrical metallic nanoparticles through

Energy and Water
Circuit Theory and Applications

Speech Encryption on FPGA Using a Chaotic Generator and S-Box Table

In this paper, we proposed a new technique for designing a dynamic S-box depended on the idea of DNA module and Chaotic system to increase its security. Lorenz chaotic generator is utilized as the chaos part of the proposed design. This design is Tested on the Field Programmable Gate Array (FPGA) for the use of offline speech encryption and decryption in real time. The experimental results are

Circuit Theory and Applications

Conical and cylindrical metallic nanoparticles design for plasmonic photovoltaics enhancement

Plasmonic Photovoltaics are considered as a promising candidate for enhancing the optical absorption by embedding metallic nanoparticles that confine the incident light in the cell. This results in thin-film PVs with improved efficiency. In this paper, the effects of embedding both conical and cylindrical metal nanoparticles in plasmonic PVs are investigated. The extinction cross sections for

Circuit Theory and Applications

Tunable fractional-order band-pass filter of order 2α

In this work, a novel implementation of a tunable fractional-order bandpass filter of order 2α is proposed. The transfer function of the presented filter is approximated using the second-order Continued Fraction Expansion (CFE) approximation technique. The filter transfer function is realized using the Inverse Follow the Leader Feedback (IFLF) structure. The Operational Transconductance Amplifiers

Circuit Theory and Applications
Research Tracks
  • Digital Circuits
  • Plasmonic Photovoltaic
  • Fractional Systems
  • Encryption Systems
  • Chaotic Systems