首页>
外国专利>
Broadband, high-efficiency, non-modulating power amplifier architecture
Broadband, high-efficiency, non-modulating power amplifier architecture
展开▼
机译:宽带,高效率,非调制功率放大器架构
展开▼
页面导航
摘要
著录项
相似文献
摘要
Apparatus and methods for a no-load-modulation power amplifier are described. No-load-modulation power amplifiers can comprise multiple amplifiers connected in parallel to amplify a signal that has been divided into parallel circuit branches. One of the amplifiers can operate as a main amplifier in a first amplification class and the remaining amplifiers can operate as peaking amplifiers in a second amplification class. The main amplifier can see essentially no modulation of its load between the power amplifier's fully-on and fully backed-off states. The power amplifiers can operate in symmetric and asymmetric modes. Improvements in bandwidth and drain efficiency over conventional Doherty amplifiers are obtained. Further improvements can be obtained by combining signals from the amplifiers with hybrid couplers.
展开▼