Crystal filters are nonlinear passive devices by nature of the characteristics
of the crystal(s). The motional characteristic of a quartz crystal is a
function of the level of the signal applied to it, known as drive level
dependence or (DLD) in engineering terms. Crystal filters can
Crystal filters are nonlinear passive devices by natureof the characteristics
of the crystal(s). The motional characteristic ofa quartz crystal is a
function of the level of the signal applied to it, knownas drive level
dependence or (DLD) in engineering terms. Crystal filters can
