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2015 | 2016
El Segundo, California – August 15, 2017
Today's communication systems often use complex modulation
techniques with peak-to-average ratio (PAR) signals of 9 dB and higher, requiring power
amplifiers (PAs) in these systems to operate below the power levels that would yield optimum
power-added efficiency (PAE). This application note presents a modified
three-level Doherty amplifier as an alternative to the conventional three-way
Doherty amplifier. The operating principle of the modified amplifier, which produces good
efficiency over the top 10 dB of operation, is explained and the design challenges faced
with this type of amplifier are discussed.
The application note can be found at
About National Instruments
Since 1976, NI has made it possible for engineers and scientists to solve the world's greatest
engineering challenges with powerful, flexible technology solutions that accelerate productivity
and drive rapid innovation. Customers from a wide variety of industries - from healthcare
to automotive and from consumer electronics to particle physics - use NI's integrated hardware
and software platform to improve the world we live in.
Vice President of Marketing
AWR Group, NI
Posted August 16, 2017