SAW Phase Modulator Using Magnetostrictive Thin Films

William P. Robbins, Alister Young

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The fabrication and testing of a SAW phase modulator based on the ΔE effect in magnetostrictive thin films is described. An Fe-Si-B film on lithium niobate was used and peak phase deviations of about 50 at modulating frequencies of 100 KHz were observed at a center frequency of 115 MHz. A simple theory for the phase modulator has been developed which is in reasonable agreement with experiment. The need for a dc bias field, in addition to the ac modulating field, for linear phase modulation is discussed.

Original languageEnglish (US)
Pages (from-to)423-427
Number of pages5
JournalIEEE Transactions on Sonics and Ultrasonics
Issue number3
StatePublished - May 1985


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