Affiliation:
1. Faculty of Electrical Engeneering, Niš
2. Innovation Center of Advanced Technologies, Niš
Abstract
The linearization of a broadband two-way microstrip Doherty amplifier
designed for application in the frequency range 0.9-1.0 GHz is considered in
this paper. The amplifier characterized by the maximum output power 8 W is
designed in microstrip technique for broadband applications. For
linearization purposes, the second- and fourth-order nonlinear signals are
extracted at the output of the peaking cell, adjusted in amplitude and phase
and fed at the input and output of the carrier transistor over the microstrip
hairpin band-pass filters. The effects of the linearization are considered
through the simulation for two sinusoidal signals with different frequency
interval between them setting on from 5 MHz and going up to30 MHz at
different input power levels up to saturation, as well as for an Orthogonal
frequency division multiplexing (OFDM) digitally modulated signal.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Cited by
5 articles.
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