A magnetostatic-surface-wave linearly dispersive delay line with a 500 MHz bandwidth at 3 GHz and a phase error from quadratic of less than 13 degrees has been demonstrated. The device utilises a 3-layer propagation structure (YIG-dielectric ground plane) in which the spacing to ground plane varies along the propagation direction.
No takes yet. Share an insight, caveat, or question.
Chang et al. (1983) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: