The Effect of Width Modes on the Performance of MSSW Resonators
In: IEEE 1984 Ultrasonics Symposium, 1984
Online
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Zugriff:
Theoretical and experimental investigations were performed to study width mode resonances (WMR) observed in magnetostatic surface wave straight edge resonators (MSSW-SER). It was found that for each principal resonance (n=1,2,3, m=l) of the MSSW-SER, different width mode resonances (m=2,3 ,... ) can be excited. Even and odd width modes can be excited depending on the RF current distribution in the microstrip transducers. Furthermore, all high order width mode resonances (m=2,3,4 ... ) occur at the low frequency side of the principal resonances (n=1,2,3, m=l). At high operating frequencies (e.g. above 4 CHz for pure YIC devices) the frequency separation between the principal resonances decreases and as a result, the width modes corresponding to high order principal modes will interfere with the low order principal modes. Through a careful choice of YIG and transducer parameters, the interference effects of width modes were minimized. Tunable high Q MSSW resonators with low insertion loss ( lOdB) have been designed and fabricated.
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The Effect of Width Modes on the Performance of MSSW Resonators
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Autor/in / Beteiligte Person: | Kok Wai Chang ; Ishak, Waguih S. |
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Zeitschrift: | IEEE 1984 Ultrasonics Symposium, 1984 |
Veröffentlichung: | IEEE, 1984 |
Medientyp: | unknown |
DOI: | 10.1109/ultsym.1984.198282 |
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