A new method for the design of energy transfer filters

Abstract

This paper is concerned with the development of a new method for the design of energy transfer filters (ETFs). ETFs are a new class of non-linear filters recently proposed by the authors, which employ non-linear effects to transfer signal energy from one frequency band to a different frequency location. The new method uses the powerful orthogonal least squares (OLS) algorithm to solve the least squares problem associated with the design and compared with previous methods achieves much better filtering performance.

Acknowledgments

XFW expresses his thanks to the Department of Automatic Control and Systems Engineering, the University of Sheffield for the support from a research scholarship. ZQL and SAB greatly acknowledge that part of this work was supported by Engineering and Physical Science Research Council, UK.