A 1.5-to-3.0GHz Tunable RF Sigma-Delta ADC With a Fixed Set of Coefficients and a Programmable Loop Delay

• Published in: IEEE transactions on circuits and systems. II, Express briefs Vol. 67; no. 9; pp. 1559 - 1563
• Main Authors: Sayed, Alhassan, Badran, Tamer, Louerat, Marie-Minerve, Aboushady, Hassan
• Format: Journal Article
• Language: English
• Published: Institute of Electrical and Electronics Engineers 01.09.2020
• Subjects: Computer Science; Engineering Sciences; Hardware Architecture; Micro and nanotechnologies; Microelectronics

In this brief, we present a tunable bandpass RF Sigma-Delta modulator with a fixed set of feedback DAC coefficients. The sampling frequency, f s , is tuned with the center frequency, f 0 , in order to maintain a fixed normalized center frequency, f 0 /f s . Any variation in the loop delay is compens...