Design and realization of two-channel complementary hybrid filter banks analog-to-digital converter

This paper presents a flexible frequency-dependent equivalent model (FDEM), which can be used to calibrate the nonlinear errors of HFB. Then, a two-channel 12 bits 200Msps HFB ADC prototype is implemented. The validity and feasibility of the proposed method is verified by making use of analyzing the output data of the actual HFB system. The experimental results show that the average spurious-free dynamic range (SFDR) over the 93% whole frequency spectrum (7% over-sampling) is enhanced obviously when the proposed calibration method has been used.

[1]  Stephen H. Lewis,et al.  Bandwidth Mismatch and Its Correction in Time-Interleaved Analog-to-Digital Converters , 2006, IEEE Transactions on Circuits and Systems II: Express Briefs.

[2]  Davud Asemani,et al.  Sensitivity of Time-Division Multiplexing Parallel A/D Converters to Analog Imperfection , 2007, 2007 IEEE Workshop on Signal Processing Systems.

[3]  Masaaki Ikehara,et al.  Decorrelating compensation scheme for coefficient errors of a filter bank parallel A/D converter , 2004, IEEE Transactions on Wireless Communications.

[4]  Truong Q. Nguyen,et al.  Design of hybrid filter banks for analog/digital conversion , 1998, IEEE Trans. Signal Process..

[5]  L. Wanhammar,et al.  Analysis of gain and time-skew errors in filter bank based A/D converters , 2001, Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257).

[6]  Pierre Duhamel,et al.  Subband Architecture for Hybrid Filter Bank A/D Converters , 2008, IEEE Journal of Selected Topics in Signal Processing.

[7]  Haruo Kobayashi,et al.  Explicit analysis of channel mismatch effects in time-interleaved ADC systems , 2001 .

[8]  Fredrik Gustafsson,et al.  Blind adaptive equalization of mismatch errors in a time-interleaved A/D converter system , 2004, IEEE Transactions on Circuits and Systems I: Regular Papers.

[9]  J. Oksman,et al.  Modelling the imperfections of analog circuits using Second-Order Statistics , 2006 .

[10]  Pierre Duhamel,et al.  Wideband, Bandpass, and Versatile Hybrid Filter Bank A/D Conversion for Software Radio , 2009, IEEE Transactions on Circuits and Systems I: Regular Papers.

[11]  U. Madhow,et al.  Comprehensive digital correction of mismatch errors for a 400-msamples/s 80-dB SFDR time-interleaved analog-to-digital converter , 2005, IEEE Transactions on Microwave Theory and Techniques.

[12]  W. Black,et al.  Time interleaved converter arrays , 1980, 1980 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.