1.9 dB
1.4 dB
1.3 dB
1.2 dB
1.1 dB
9.5 dB
10.5 dB
11.5 dB
Figure 9. Smith Chart with Noise Figure and Available
Gain Circles at 12 GHz, V
DS
= 1.5 V, I
D
= 10 mA.
Phase Reference Planes
The positions of the reference
planes used to measure S-
Parameters and to specify
Γ
opt
for
the Noise Parameters are shown
in Figure 10. As seen in the
illustration, the reference planes
are located at the extremities of
the package leads.
REFERENCE
PLANES
SOT-363 PCB Layout
A PCB pad layout for the minia-
ture SOT-363 (SC-70) package
used by the ATF-36163 is shown
in Figure 11 (dimensions are in
inches). This layout provides
ample allowance for package
placement by automated
assembly equipment. The layout
is shown with a nominal SOT-363
package footprint superimposed
on the PCB pads.
0.026
TEST CIRCUIT
0.075
Figure 10. Reference Planes.
0.035
0.016
Figure 11. PCB Pad Layout
(Dimensions in Inches).
5-86
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
