Studies of MSFVW (Magnetostatic Forward Volume Wave) to MSBVW (Magnetostatic Backward Volume Wave) Mode Conversion at a Region of Bias-Field Discontinuity and of the Dispersion of an MSFVW Pulse.
Abstract
This report investigates mode conversion from magnetostatic forward volume waves (MSFVW's) to magnetostatic backward volume waves (MSBVW's) through a region of bias-field discontinuity, and the prospects of monolithically implementing a nondispersive delay line on a given YIG-film strip by changing the magnitude and direction of the internal bias field within the delay line between the two microstrip transducers so that a portion of the delay would support MSFVW and the remainder of the delay line would support MSBVW. This configuration constitutes a monolithic implementation of a discrete forward wave-type delay line cascaded to a discrete backward wave-type delay line, with the requisite dispersion self-compensation achieved by matching the delay characteristics of the two delay lines. The principle objective was to establish if efficient mode conversion is possible over a wide bandwidth. The problem was attacked by performing theoretical and experimental studies simultaneously. The experimental study indicated that the presence of mode conversion only over a very narrow band. Initial theoretical results for mode conversion across a single boundary separating two regions with fixed bias-field angles were encouraging in that they showed that, for a small change of tilt angle across the boundary, efficient mode conversion is possible over a wide band.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1987
- Accession Number
- ADA189343
Entities
People
- H. S. Tuan
- J. P. Parekh
Organizations
- Stony Brook University