A 4th order 3.6 GS/s RF/spl sigma//spl delta/ADC with a FoM of 1 pJ/bit

A Ashry, H Aboushady - … Transactions on Circuits and Systems I …, 2013 - ieeexplore.ieee.org
A 4th order RF LC-based ΣΔ ADC clocked at 3.6 GHz and centered at 900 MHz is
presented. A simple design methodology is used to derive a robust architecture with a …

A 3.6 GS/s, 15mW, 50dB SNDR, 28MHz bandwidth RF ΔΣ ADC with a FoM of 1pJ/bit in 130nm CMOS

A Ashry, H Aboushady - 2011 IEEE Custom Integrated Circuits …, 2011 - ieeexplore.ieee.org
A 4 th order RF LC ΔΣ ADC clocked at 3.6 GHz and centered at 900MHz is presented. The
simplicity of the ADC architecture results in a significant performance enhancement and …

Sigma delta RF modulator having capacitive coupling, analog/digital converter and apparatus including such a modulator

H Aboushady, N Beilleau, D Belfort, A Ashry - US Patent 9,306,594, 2016 - Google Patents
A continuous-time sigma delta radio frequency modulator is provided, including at least two
LC resonators coupled in parallel by a coupling capacitive element, producing an at least 4 …

4th order capacitively-coupled LC-based ΣΔ modulator

DR Belfort, SYC Catunda, H Aboushady - Microelectronics Journal, 2017 - Elsevier
In this paper, we present the design and implementation of an RF bandpass Σ Δ modulator
where the loop filter is a 4th order capacitively-coupled LC filter. A design methodology …

A generalized approach to design CT ΣΔMs based on FIR DAC

A Ashry, H Aboushady - Proceedings of 2010 IEEE …, 2010 - ieeexplore.ieee.org
In this paper, a generic and simple approach to design Continuous-Time Sigma-Delta
Modulators (CT ΣΔMs) based on Finite Impulse Response Digital-to-Analog Converter (FIR …

Jitter analysis of bandpass continuous-time ΣΔMs for different feedback DAC shapes

A Ashry, H Aboushady - Proceedings of 2010 IEEE …, 2010 - ieeexplore.ieee.org
In this paper, a simple and intuitive technique for analyzing clock jitter effect on bandpass
Continuous-Time Sigma-Delta (ΣΔ) modulators is introduced. The power spectral density of …

Simple architecture for subsampling LC-based ΣΔ modulators

A Ashry, H Aboushady - Electronics letters, 2010 - IET
A simple architecture for subsampling LC-based continuous-time ΣΔ modulators is
introduced. The concept of utilising loop delay to simplify the modulator architecture is …

[PDF][PDF] The Excess Loop Delay Calibration in a Bandpass Continuous-Time Delta Sigma Modulators Based on Q-Enhanced LC Filter

S Benabid - academia.edu
The Q-enhanced LC filters are the most used architecture in the Bandpass (BP) Continuous-
Time (CT) Delta-Sigma (Σ∆) modulators, due to their: high frequencies operation, high …

Measurement of continuous-time ΣΔ modulators: Implications of using spectrum analyzer

A Ashry, AK El-Shennawy, M Elbadry… - 2010 International …, 2010 - ieeexplore.ieee.org
In this paper, The difference between getting the output spectrum directly using spectrum
analyzer and obtaining the spectrum digitally in measuring clock jitter effect on continuous …

[PDF][PDF] Measurement of Continuous-Time Σ∆ Modulators: Implications of Using Spectrum Analyzer

A Ashry, AK El-Shennawy, M Elbadry, A Elsayed… - academia.edu
In this paper, The difference between getting the output spectrum directly using spectrum
analyzer and obtaining the spectrum digitally in measuring clock jitter effect on continuous …