An Efficient Quadratic Conversion Architecture for Real-Time Wideband DDC


Article Preview

This paper presents an efficient quadratic conversion architecture for real-time wideband DDC, it can move IF signal to baseband in two steps. Firstly, IF signal is moved to baseband nearby with the help of an structure based on polyphase filter, which places mixers after polyphase filters. Then, the signal is moved to baseband through conventional orthogonal frequency mixing. This presented architecture can reduce filter resources and effectively reduce the sample rate and process cost. Finally, simulation results are presented to illustrate the validity of the new structure.



Edited by:

Abdel Hamid Ismail Mourad and József Kázmér Tar




L. Zhang, "An Efficient Quadratic Conversion Architecture for Real-Time Wideband DDC", Applied Mechanics and Materials, Vol. 527, pp. 180-184, 2014

Online since:

February 2014





[1] Walter Tuttlebee. Software Defined Radio Technology and Implementation[M]. Electronic Industry Press.

[2] Ji-yang Yu, Yang Li. An efficient digital down converter architecture for wide band radar receiver[A]. Radar conference, 2009 IET International. 2009: 1-4.


[3] Guangshu Hu. Modern Signal Processing[M]. Tsinghua University Press, 2004, 132-141.

[4] Petrowski M, Chester D.B., Young W.R. Single Chip Digital Down Converter Architecture[A]. 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing. 1993(1): 349-352.


[5] Bai Fengming, Lv Xiaoli, Yan Fei. Programming design of Digital-Down Converter based on software radio [A]. 2010 Second Pacific-Asia Conference on Circuits, Communications and System (PACCS). 2010, (1): 351-354.


[6] Matthew T. Hunter, Wasfy B. Mikhael, Achilleas G. Kourtell- is. Wideband Digital Downconverters for Synthetic Instrum- entation[J]. IEEE Transactions on Instrumentation and Measurement, 2009, ( 58): 263-269.


[7] Hong Wang. Research on wideband digital receiver and system implementation[D]. University of Electronic Science and Technology of China, Chengdu, (2006).