Selected Publications
- G. H. Ibrahim, A. Hafez, A. H. Khalil, “An Ultra Low Power QPSK Receiver Based on Super-Regenerative Oscillator with a Novel DigitalPhase Detection Technique”, International Journal of Electronics and Communications (AEUE), Elsevier, Volume 67, Issue 11, November 2013, Pages 967–974.
- Mostafa A. Elmala, Ghada H. Ibrahim, “Calibration Study of Dual-Band Weaver-Hartley Receiver Architecture”, Microelectronics Journal, Vol. 46, No. 6, June 2015, Pages 439–446.
- N. E. Elashkara, M. Aboudina, H. A. H. Fahmy, G. H. Ibrahim, and A. H. Khalil, “Memristor based BPSK and QPSK Demodulators with Nonlinear Dopant Drift Model”, accepted for publication in Microelectronics Journal.
- G. H. Ibrahim, A. Hafez, A. H. Khalil, H. A. Elsimary, “A 2.7 GHz Super-Regenerative Receiver Front-End for QPSK Modulated Signals”, CSNDSP 2012.
- Ghada H. Ibrahim, Amr N. Hafez, “An 8-PSK Digital Phase Detection Technique For Super-Regenerative Receivers”, IEEE International Conference on Electronics, Circuits and Systems, ICECS 2015, 6-9 Dec. 2015, pp. 240-243.
FRIAS Project
Development of RFID circuit building blocks using an organic TFT transistor technology.
Organic Thin Film Transistors (OTFT), has received considerable interest in the last decade due to the opportunities to fill current application gaps. OTFTs are aimed for applications requiring large-area coverage, structural flexibility, low temperature processing, and low cost. One of the most envisioned applications is the radio frequency identification (RFID) tag. Some of the required functional specifications in the targeted OTFT technology to suit the implementation of RFID circuit blocks are the operating speed, large current drive, low leakage and low threshold voltage.
Several RFID tags using OTFT devices were reported, either as complete tags, or some of their main building blocks, [4]. However, targeted technologies suffered either large TFT length, high threshold voltage, high supply voltage or low fT , or combine several such performance issues.
The proposed OTFT technology in offers better performance measures where threshold voltages as low as 1 V and supply voltages as low as 3.3 V and reduced channel lengths to 0.8 µm, leveraging device’s fT. This enables the implementation of RFID tags with better sensitivity and lower power consumption.
This project aims at designing basic building blocks of an RFID tag, including rectifier circuits and receiver part.