Efficient broadband excitation of the n = 0 surface magnetostatic waves in a y.i.g. slab

This letter describes an efficient method for exciting the lowest-order surface magnetostatic wave in a transversely magnetised single-crystal y.i.g. slab. The total coupling loss from an electromagnetic wave to a surface magnetostatic wave and back into an electromagnetic wave is measured to be less than 2.5dB, from 3.2 to 3.8GHz. The propagation characteristic of the surface magnetosatic wave is also discussed.