Invention Grant
US09031158B2 Transmit diversity architecture with optimized power consumption and area for UMTS and LTE systems 有权
发射分集体系结构,为UMTS和LTE系统提供优化的功耗和面积

Transmit diversity architecture with optimized power consumption and area for UMTS and LTE systems
Abstract:
A method and apparatus for providing total power from one transmit path. The method provides the steps of: selecting a transmit path and closing a first switch, located after a digital to analog converter. A second switch between the two transmit paths is then closed in order to provide for the use of at least one low-pass filter in each transmit path. The signal is then processed through the at least one low pass filter in each transmit path. The signal is then processed through at least one mixer in each transmit path. After the mixer, the signal is then processed through at least one driver amplifier in each transmit path, and one-half of the total power is allocated to each of two transmission paths. A third switch is then closed after the at least one power amplifier in each transmit path to force the half-power from one transmit path into one output.
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