Abstract
Magnetostatic wave (MSW) propagation in a finite-width ferrite slab placed inside and along a rectangular waveguide is investigated theoretically and numerically. Using the integral equation method, the general solution to the problem of wave propagation is derived. Thin-slab approximation makes the derived solution more tractable and provided the dispersion relations in terms of an infinite determinant. From the results presented, it can be concluded that, in order to obtain a high value of group time delay over a large bandwidth, thin, narrow slabs placed in the center of the guide must be used. On the other hand, to maximize the device bandwidth, thin slabs placed at the top or bottom of the guide are most appropriate. >
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