mga-31189 Avago Technologies, mga-31189 Datasheet - Page 5

• Manufacturer Part Number: mga-31189
• Description: 70 To 500 Mhz Ampliier For If Applications Using The Avago Technologies Mga-31189 Ampliier
• Manufacturer: Avago Technologies

Using EM Simulator to Determine the Optimum Load Reflection Coefficient (Γ
Without OIP3 load-pull data, it is difficult to match the
MGA-31189 for optimum IP3. However, based on the
existing 450 MHz, 900 MHz and 1500 MHz circuit data
available in the datasheet and with the aid of an elec-
tromagnetic (EM) simulator (i.e. Momentum ADS from
Agilent Technologies), the *
mined.
Momentum ADS is a full-wave simulator, which is based
on the Method-of-Moments (MoM) numerical method.
Unlike the schematic simulator that used equations to
obtain S-parameters and other electrical properties of the
components under test, a full-wave simulation actually
solves Maxwell’s equation for the design. As a result, a
Figure 7. Comparison of simulated and measured *
Figure 9. Comparison of simulated and measured *
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location can easily be deter-
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at 450 MHz
at 1500 MHz
full-wave simulation is more accurate and should always
be performed for devices that have bends or close gaps
or when the user wishes to model the device as accurately
as possible [4].
Figures 7 to 9 show a comparison between the measured
*
*
accurately replicate the measured *
*
same simulation method, and Figure 10 illustrates the *
locations for the 70 MHz, 170 MHz, 240 MHz and 500 MHz
circuits that are discusses in subsequent sections.
Figure 8. Comparison of simulated and measured *
Figure 10. Simulated *
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obtained using the load-pull method and the simulated
for the IF frequencies can be determined using the
using Momentum ADS. Momentum ADS is able to
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for 70 MHz, 170 MHz, 240 MHz and 500 MHz
)
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. Due to this fact,
at 900 MHz
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