Electrical interconnections
ZXtalk method for the reduction of crosstalk and echo

     Crosstalk and echo may be effectively reduced in interconnections comprising n transmission conductors and one reference conductor, used for the transmission of n signals, using the ZXtalk technique. Our latest results are presented in the two following papers, which emphasize the advantages of using a MIMO series-series feedback amplifier (MIMO-SSFA) for the implementation of the special ZXtalk method for completely degenerate interconnections:

[B66] F. Broydé, E. Clavelier, "A Simple Method for Transmission with Reduced Crosstalk and Echo", Proceedings of the 13^th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2006, December 10-13, 2006, Nice, France, pp. 684-687.

[B70] F. Broydé, E. Clavelier, "MIMO Series-Series Feedback Amplifiers", IEEE Trans. Circuits Syst. II: Express Briefs, Vol. 54, No. 12, December 2007, pp. 1037-1041.

     The background of the ZXtalk method is presented in:

[B54] F. Broydé, "Eliminer radicalement la diaphonie dans les interconnexions", Electronique, No. 140, octobre 2003, pp. 57-61.

     and

[B60] F. Broydé, "Clear as a Bell - Controlling crosstalk in uniform interconnections", IEEE Circuits and Devices Magazine, Vol. 20, No. 6, November/December 2004, pp. 29-37.

     More elaborate discussions of the ZXtalk technique can be found in:

[B56] F. Broydé, E. Clavelier, "Une technique de réduction de la diaphonie basée sur un choix particulier de transformation modale", actes du 12ème colloque international de compatibilité électromagnétique, Toulouse, 16 au 18 mars 2004, pp. 417-422.

[B58] F. Broydé, E. Clavelier, "A New Interconnection Architecture for the Reduction of Crosstalk and Reflections", Technical Conferences Proceedings of the SAME 2004 forum, Session 5: Analog and electrical design, Sophia Antipolis, October 6-7, 2004.

[B62] F. Broydé, E. Clavelier, "A New Method for the Reduction of Crosstalk and Echo in Multiconductor Interconnections",
IEEE Trans. Circuits Syst. I, Vol. 52, No. 2, February 2005, pp. 405-416.

     and

[B63] F. Broydé, E. Clavelier, "A Modal Transmission Technique Providing a Large Reduction of Crosstalk and Echo", proceedings of the 16th International Zurich Symposium on Electromagnetic Compatibility, 13-18 February 2005, pp. 341-346.

     Let us note that the paper [B62] contains the detailed theory and the equations needed to proportion a ZXtalk device. Several of these articles refer to our patent applications related to the ZXtalk technique, which are represented by the following published PCT applications:

[P26] International application PCT/EP2003/015036 of 24 December 2003 (WO 2004/062129), Method and device for transmission with reduced crosstalk. Inventors: Frédéric Broydé & Evelyne Clavelier. Priority: French patent application 03 00064 of 6 January 2003.

[P27] International application PCT/EP2004/002382 of 18 February 2004 (WO 2004/079941), Digital method and device for transmission with reduced crosstalk. Inventors: Frédéric Broydé & Evelyne Clavelier. Priority: French patent application 03 02814 of 6 March 2003.

[P28] International application PCT/EP2004/002383 of 18 February 2004 (WO 2004/082168), Method and device for transmission without crosstalk. Inventors: Frédéric Broydé & Evelyne Clavelier. Priority: French patent application 03 03087 of 13 March 2003.

[P30] International application PCT/IB2006/003950 of 19 December 2006 (WO 2007/083191), Multiple-input and multiple-output amplifier. Inventors: Frédéric Broydé & Evelyne Clavelier. Priority: French patent application 06/00388 of 17 January 2006.

[P33] International application PCT/IB2007/001344 of 26 April 2007 (WO 2008/001168), Multiple-input and multiple-output amplifier using mutual induction in the feedback network. Inventors: Frédéric Broydé & Evelyne Clavelier. Priority: French patent application 06/05633 of 23 June 2006.