title: Explanation of the inverse Doppler effect observed in nonlinear transmission lines.
abstract: The theory of the inverse Doppler effect recently observed in magnetic nonlinear transmission lines is developed. We explain the crucial role of the backward spatial harmonic in the occurrence of an inverse Doppler effect and draw analogies of the magnetic nonlinear transmission line to the backward wave oscillator.
authors.affiliation: Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA. abkozyrev@wisc.edu
authors.forename: Alexander B
authors.initials: AB
authors.lastname: Kozyrev
authors.forename: Daniel W
authors.initials: DW
authors.lastname: van der Weide