Digital I/Q demodulator

Author

Ziomek, C. ; Corredoura, P.

Author_Institution

Stanford Linear Accel. Center, Stanford Univ., CA, USA

Volume

4

fYear

1995

fDate

1-5 May 1995

Firstpage

2663

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505652

Filename

505652