ABSTRACT
The power durability of the ZnO/diamond surface acoustic wave
(SAW) filter was
investigated and compared with the LiTaO3 SAW filter.
The ZnO/diamond SAW
filter maintained linearity of the input-output relation up to
the input power
of 36 dBm at 2.90 GHz, whereas the LiTaO3 SAW filter,
which operated at
822 MHz, was nonlinear above the input power of 23 dBm and
degraded
significantly at 27.7 dBm. The input power dependence of the time
to failure was
also investigated for both SAW filters. It was found that the
ZnO/diamond SAW
filter was durable for 8 dB higher input power than that of the
LiTaO3 SAW
filter even at 3.5 times higher frequency. These results indicate
the extremely
high power durability of the ZnO/diamond SAW filter.
1997 IEEE Transactions on Ultrasonics,
Ferroelectrics, and Frequency Control 44:1395-1400
© 1997 by The Institute of Electrical and Electronics
Engineers, Inc. All rights reserved.