High efficiency, multiple layer ZnO acoustic transducers at millimeter-wave frequencies

Hadimioglu, B.; La Comb, L. J.; Wright, D. R.; Khuri-Yakub, B. T.; Quate, C. F.
June 1987
Applied Physics Letters;6/8/1987, Vol. 50 Issue 23, p1642
Academic Journal
We have fabricated multiple layer ZnO acoustic transducers for highly efficient sound wave generation at millimeter-wave frequencies. The transducers consist of half-wave-thick layers of ZnO with alternating crystal structure. The two-way untuned conversion loss values were 27 dB near 29 GHz and 50 dB at 96 GHz measured at liquid nitrogen temperatures.


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