DocumentCode
1805594
Title
A quadrature IF mixer with high image rejection for continuous-time complex ΣΔ modulators
Author
Pun, Kong-Pang ; Choy, Chiming ; Cheong-Fat Chan ; Franc, José E.
Author_Institution
City Univ. of Hong Kong, China
Volume
4
fYear
2002
fDate
2002
Abstract
With an integrated mixer, the continuous-time (CT) lowpass ΣΔ modulator is highly suitable for A/D conversion of IF signals. In this paper, a quadrature IF mixer with high image rejection is proposed for this application. By employing a channel sharing technique and a special clocking scheme, the proposed mixer is insensitive to resistor mismatches and LO phase errors, which are major error sources for image rejection. Simulation results verifying the concept are presented.
Keywords
continuous time systems; mixers (circuits); sigma-delta modulation; A/D conversion; IF signals; LO phase errors; channel sharing technique; clocking scheme; continuous-time complex ΣΔ modulators; error sources; image rejection; integrated mixer; quadrature IF mixer; resistor mismatches; Analog-digital conversion; Chromium; Clocks; Computed tomography; Delta modulation; Frequency conversion; Image converters; Phase modulation; Resistors; Wireless communication;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN
0-7803-7448-7
Type
conf
DOI
10.1109/ISCAS.2002.1010429
Filename
1010429
Link To Document