1 GHz GaAs Buck Converter for High Power Amplifier Modulation Applications
conference paper
A fully integrated 1 GHz buck converter output stage, including on-chip inductor and DC output filtering has been realized, in a standard high-voltage breakdown GaAs MMIC technology. This is a significant step forward in designing highspeed power control of supply-modulated HPAs (high power amplifiers). Agile power controlled HPAs are intended to find application in high-efficiency transmitters for both radio
communication and radar applications, especially in which phased array transmit chains are used. Rapid, accurately controlled, power efficient power supplies, with rapid ramp-up and ramp-down, provide control over HPA output signal envelope rise and fall-times versus spectral switching side-lobes. Simultaneously power efficient tapering of a phased array transmit antenna is possible without the need for applying special fixed attenuators or modified antenna elements.
communication and radar applications, especially in which phased array transmit chains are used. Rapid, accurately controlled, power efficient power supplies, with rapid ramp-up and ramp-down, provide control over HPA output signal envelope rise and fall-times versus spectral switching side-lobes. Simultaneously power efficient tapering of a phased array transmit antenna is possible without the need for applying special fixed attenuators or modified antenna elements.
TNO Identifier
464572
Source title
15th European Microwave Week 2012, EuMW2012: Space for Microwaves - Proceedings of the 7th European Microwave Integrated Circuits Conference, EuMIC 2012, 29-30 October 2012, Amsterdam, The Netherlands