A 1.65 to 2.5 GHz Wide-band RF Energy Harvester. - Eslam Helal; Mohamed El-Nozahi; Sameh Ibrahim; Hani Fikry Ragai (MWSCAS, 2018)

Spectral Breathing and Its Mitigation in Digital Fractional-N PLLs. - Enrique Alvarez-Fontecilla; Eslam Helal; Amr I. Eissa; Ian Galton (IEEE J. Solid State Circuits, 2021)

A Time Amplifier Assisted Frequency-to-Digital Converter Based Digital Fractional-N PLL. - Eslam Helal; Enrique Alvarez-Fontecilla; Amr I. Eissa; Ian Galton (IEEE J. Solid State Circuits, 2021)

Delta-Sigma FDC Enhancements for FDC-Based Digital Fractional-N PLLs. - Enrique Alvarez-Fontecilla; Amr I. Eissa; Eslam Helal; Colin Weltin-Wu; Ian Galton (IEEE Trans. Circuits Syst. I Regul. Pap., 2021)

DTC Linearization via Mismatch-Noise Cancellation for Digital Fractional-N PLLs. - Eslam Helal; Amr I. Eissa; Ian Galton (IEEE Trans. Circuits Syst. I Regul. Pap., 2022)