Design and Implementation of a VUHF Band 1500 W Ultra Wideband Amplifier
The design and implementation of a VUHF band 1500 W broadband power amplifier is introduced,covering the entire frequency band from 30 MHz to 520 MHz.By adopting ADS large signal model simulation method to match the impedance of power transistor,a VUHF band 150 W terminal module is designed;by using high power transmission line transformer and phase-shifting network to realize high power branching and combining circuit,90°phase shifting is completed and the even/odd harmonic suppression of power amplifier transmitter is improved,which can finally combine 16 channel high power signals in VUHF band;the liquid-cooled case is designed by combing digital simulation and structural optimization,and an efficient radiator is designed by using Icepak software to optimize the layout of modules in the cabinet.A comprehensive control and protection circuit is adopted to improve the stability and reliability of the power amplifier.
VUHF bandtransmission line transformer90°phase shiftefficient radiator
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