Abstract
Noise power ratio (NPR), also known as carrier to
inter-modulation noise ratio is an important parameter
for analyzing the performance of high power amplifiers
in multicarrier mode. In satellites, high power amplifiers
are one of the key components in the communication
subsystem. All power amplifiers are nonlinear to some
degree and if more than one carrier is received by a
single amplifier, mixing or intermodulation processes
will take place, also the IM analysis becomes complex as
the number of carriers are increased in the transmitted
signal. In order to analyze intermodulation distortion
products, NPR measurement techniques are employed.
The objective is to develop a software simulation of such
a test set that could analyze the performance of various
HPA models in multicarrier mode by measuring the
NPR at various back off levels.
Adnan Zafar, Dr. Paul Thompson, Dr. Qamar ul Islam. (2012) Simulation of a Noise Power Ratio test set and use of it to analyze High Power Amplifier Models in Multicarrier Mode, Journal of Space Technology , Volume 2, Issue 1.
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