actuation is analogous to the bending
of a bimetallic strip when subjected to
heating. Two metals having different
coefficients of expansion make up the
bimetallic strip, and, as heat is applied,
the metals expand. The metal with a
higher coefficient of thermal expansion
will expand more, thus producing bend-
ing. If a periodic heating source is used
to heat the strip, then the strip undergoes
heating and cooling, and the duration of
the cycle is determined by the frequency
of the heating source.
In this work, experiments are con-
ducted on metal-coated silicon beams
clamped at both ends and with dimen-
sions in the sub-micron range. An ampli-
tude modulated laser source is used to
actuate the resonant mode of the device.
When the laser irradiates the resonator,
light is absorbed, and the device heats
up. The mismatch in the coefficient of
thermal expansion of the metal and sili-
con layers causes an out-of-plane bend-
ing of the beam. Periodic heating of the
w
w
w.
g
r
e
e
n
r
a
y
i
n
d
u
s
t
r
i
e
s
.
c
o
m
Frequency 10 - 800 MHz
Attributes Hermetic Pkg.
High Shock & Vibration
Best Stability ±0.3 ppm
Output CMOS, Cl. Sine, LVPECL
Size 9.0 x 7.0 x 2.8 mm
0.35 x 0.28 x 0.11 in., SMT
frequency control solutions
T1307
T1215
T52
Frequency 10 - 50 MHz
Attributes Ultra-low
(7x 10
-11
/g) g-Sensitivity
Best Stability ±0.5 ppm
Output CMOS, Sine
Size 9.0 x 7.0 x 3.7 mm
0.35 x 0.28 x 0.176 in., SMT
Frequency 10 - 50 MHz
Attributes Tight Stability
High Shock & Vibration
Best Stability ±0.1 ppm
Output CMOS, Clipped Sine
Size 5.0 x 3.0 x 2.2 mm
0.20 x 0.12 x 0.09 in., SMT
©2014
Greenray
Industries,
Inc.
All
rights
reserved.
All
specifications
subject
to
change
without
notice.
The Bull in the Crystal Shop.
When it comes to g-Sensitivity, phase noise, and temperature
stability, Greenray TCXOs don't take "No." for an answer. Our
TCXOs validate our commitment to re-Defne frequency control,
while providing customers frequency control solutions that
work – on the ground, in the air. And most defnitely, in
motion. You might say we're bullish on TCXOs.
Check out a few examples from our latest catalog:
Ultra-low
g-Sensitivity
Wide Frequency
Range
Tight
Stability
29
Technology
Electronic Military & Defense Annual Resource, 4th Edition
Figure 3