Title :
Digital I/Q demodulator
Author :
Ziomek, C. ; Corredoura, P.
Author_Institution :
Stanford Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
I/Q demodulation is a common and useful RF signal processing technique used in charged-particle accelerators. When implemented with conventional analog RF components, a number of inherent errors can degrade the I/Q Demodulator performance, including gain balance, quadrature-phase balance, DC offsets, impedance match, and carrier leakage. Recent advances in high-speed analog-to-digital converters allow the I/Q demodulator to be implemented digitally, greatly reducing these systematic errors. This paper describes the design of a digital I/Q demodulator that will be applied to the PEP-II B factory
Keywords :
accelerator RF systems; colliding beam accelerators; demodulation; digital signal processing chips; electron accelerators; nuclear electronics; signal processing; storage rings; DC offsets; PEP-II B factory; RF signal processing technique; carrier leakage; charged-particle accelerators; digital I/Q demodulator; gain balance; high-speed analog-to-digital converters; impedance match; quadrature-phase balance; Acceleration; Baseband; Circuits; Control systems; Demodulation; Feedback control; Production facilities; Q measurement; RF signals; Radio frequency;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505652
