With the trend in recent
years toward multifunctional sets, higher processing speeds are
required. To increase processing speed of equipment incorporating a
microcomputer, the microcomputer's clock frequency must be increased.
To meet this requirement, resonators that provide higher oscillation
frequencies are needed.
With the "CERALOCK" covering the MHz-band, we must reduce the thickness
of the piezoelectric element in order to increase the oscillation
frequency according to the following formula.
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Oscillation frequency
(Resonant frequency) = Piezoelectric constant*/Element thickness
(*The piezoelectric constant is fixed for each material) |
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| However, if the element
thickness is reduced, the product strength may be also reduced. To cope
with this problem, Murata has developed resonators that can provide
higher oscillation frequencies through product size optimization,
development of new piezoelectric materials, and processing technology
improvements. At present, Murata offers an extensive product lineup
covering up to 70 MHz, and is proceeding with development of resonators
covering higher frequencies in the existing product series and
vibration modes. |
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