Patent ID: 7098741
Filing Date: 2006-08-29
Classification: H03F

Abstract:
1. A monolithically integrated microwave frequency high power amplifier device for a radio base station, comprising: input means for receiving a microwave frequency signal, a first power amplifier stage having an input and an output, the input of said first power amplifier stage being coupled to receive said microwave signal, a second power amplifier stage having an input and an output, the input of said second power amplifier stage being coupled to receive said microwave frequency signal after having been amplified by said first power amplifier stage, and an output for outputting said microwave frequency signal after having been amplified by said first and second power amplifier stages, wherein said first power amplifier stage is optimized to be supplied with a first supply voltage, said second power amplifier stage is optimized to be supplied with a second supply voltage, and said first supply voltage is substantially lower than said second supply voltage.