ATF55143 HP [Agilent(Hewlett-Packard)], ATF55143 Datasheet - Page 17

• Manufacturer Part Number: ATF55143
• Description: Agilent ATF-55143 Low Noise Enhancement Mode Pseudomorphic HEMT in a Surface Mount Plastic Package
• Manufacturer: HP [Agilent(Hewlett-Packard)]

Designing with S and Noise
Parameters and the Non-Linear Model
The non-linear model describing
the ATF-55143 includes both the
die and associat ed package
model. The package model
includes the effect of the pins but
does not include the ef fect of the
additional source inductance
associated with grounding the
source leads through the printed
circuit board. The device S and
Noise Parameters do include the
effect of 0.020 inch thickness
printed circuit board vias. When
comparing simulation results
between the measured S param-
Figure 3. Adding Vias to the ATF-55143 Non-Linear Model for Comparison to Measured S and Noise Parameters.
VIA2
V1
D=20.0 mil
H=25.0 mil
T=0.15 mil
Rho=1.0
W=40.0 mil
VIA2
V2
D=20.0 mil
H=25.0 mil
T=0.15 mil
Rho=1.0
W=40.0 mil
SOURCE
DRAIN
ATF-55143
eters and the simulated non-
linear model, be sure to include
the effect of the printed circuit
board to get an accurate compari-
son. This is shown schematically
in Figure 3.
For Further Information
The information presented here is
an introduction to the use of the
ATF-55143 enhancement mode
PHEMT. More detailed application
circuit information is a vailable
from Agilent Technologies.
Consult the web page or your
local Agilent Technologies sales
represent ative.
SOURCE
GATE
VIA2
V4
D=20.0 mil
H=25.0 mil
T=0.15 mil
Rho=1.0
W=40.0 mil
VIA2
V3
D=20.0 mil
H=25.0 mil
T=0.15 mil
Rho=1.0
W=40.0 mil
17
MSUB
MSub1
H=25.0 mil
Er=9.6
Mur=1
Cond=1.0E+50
Hu=3.9e+034 mil
T=0.15 mil
TanD=0
Rough=0 mil
MSub