20051010213424191[1]
Designing Class A Power Amplifier Using the Load-Pull Method
Objectives:
• We would like to design a simple Class A power amplifier using the load-
pull method.
• This is a low power and low voltage power amplifier, the output is slated
for not more than 5mW, with operating frequency at 410 MHz.
• The design steps is divided into 3 parts, the first is to design the DC
biasing of the amplifier, the second is to perform a load-pull test on
the circuit and finally we verify the performance of the circuit. Two
performance test is carried out, the gain compression test and the third
order intercept (TOI) point test.
Background:
• The transistor chosen for the job is BFR92A which comes in SOT-23
package. The maximum IC sustainable by the transisto……
