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- Wenjun Sheng, Ahmed Emira, Edgar SÃ¡nchez-Sinencio
- IEEE Transactions on Circuits and Systems Iâ€¦
- 2006

A unified system-level design methodology for highly integrated CMOS radio frequency receiver design is introduced. This complete system-level design methodology is targeted to minimize the totalâ€¦ (More)

A 12th-order OTA-C complex filter with a nonconventional frequency tuning for a Bluetooth receiver is implemented in a low-cost mainstream 0.35m CMOS process. This proposed frequency tuning scheme isâ€¦ (More)

- A. M. Elshurafa, Kathleen Khirallah, H. H. Tawfik, Ahmed Emira, Ahmed K. S. Abdel Aziz, Sammy Sedky
- Journal of Microelectromechanical Systems
- 2011

This paper studies analytically and numerically the spring softening and hardening phenomena that occur in electrostatically actuated microelectromechanical systems comb drive resonators utilizingâ€¦ (More)

- Ahmed Emira, Alberto Valdes-Garcia, +5 authors Edgar SÃ¡nchez-Sinencio
- IEEE Transactions on Circuits and Systems Iâ€¦
- 2006

In this paper, an approach to map the Bluetooth and 802.11b standards specifications into an architecture and specifications for the building blocks of a dual-mode direct conversion receiver isâ€¦ (More)

- Ahmed Emira, Alberto Valdes-Garcia, +5 authors Edgar Sanchez-Sinencio
- 2001

The IEEE 802.11b and Bluetooth standards are two of the major driving forces of the short-range wireless communications market. Their co-existence in both home and office environments, growsâ€¦ (More)

- Moataz Abdelfattah, Ahmed Nader Mohieldin, Ahmed Emira, Edgar SÃ¡nchez-Sinencio
- 2011 IEEE International Symposium on Industrialâ€¦
- 2011

For energy harvesting applications, a power management unit (PMU) architecture operating at low input voltages is required. The most critical sub-blocks of such a PMU are the voltage multiplier andâ€¦ (More)

- Ahmed Emira, Mohamed AbdelGhany, Mohannad Y. Elsayed, Amro M. Elshurafa, Sherif Sedky, Khaled N. Salama
- IEEE Transactions on Industrial Electronics
- 2013

In this paper, two high-voltage charge pumps (CPs) are introduced. In order to minimize the area of the pumping capacitors, which dominates the overall area of the CP, high-density capacitors haveâ€¦ (More)

A low-power quadrature direct digital frequency synthesizer (DDFS) is presented. Piecewise linear approximation is used to avoid using a ROM look-up table to store the sine values in a conventionalâ€¦ (More)

- Ahmed Emira, Edgar SÃ¡nchez-Sinencio
- ACM Great Lakes Symposium on VLSI
- 2003

In this paper, the design of variable gain ampli.er (VGA) for wireless receiver applications is presented. The VGA uses ac coupling (highpass filter) for dc offset rejection, while each VGA stage isâ€¦ (More)

- Ahmed Emira, A. N. Mohieldin, Edgar SÃ¡nchez-Sinencio
- Proceedings of the 28th European Solid-Stateâ€¦
- 2002

A low-power quadrature direct digital frequency synthesizer (DDFS) is presented. Piecewise linear approximation is used to avoid using ROM lookup table to store the sine values. ROM elimination hasâ€¦ (More)