Digital Power Splitter Tuning for Doherty Phase and Attenuation

The patent applies dynamics by replacing fixed phase shift and attenuation settings with digitally controllable adjustable components. The phase shifters and attenuators can be dynamically adjusted through digital control signals to optimize performance across different operating conditions, thereby improving efficiency and linearity while maintaining manageable device complexity through modular architecture.

The patent implements parameter changes by enabling digital adjustment of phase shift and attenuation parameters. The digitally controlled phase shifters and attenuators allow dynamic modification of electrical parameters (phase angle and signal level) to adapt to varying signal levels and operating conditions, resolving the contradiction between fixed simple structure and variable optimal performance.

The patent applies universality by implementing digitally controlled phase shifters and attenuators that can be programmed and adjusted through digital control signals. These multi-functional components can perform multiple operations (phase shifting, attenuation) and can be controlled through a unified digital interface, improving signal control precision while managing device complexity through standardized digital control mechanisms.

The patent replaces mechanical adjustment mechanisms with digital electronic control. Instead of manual or mechanical phase and attenuation adjustment, the system uses digitally controlled components that respond to digital control signals, thereby improving control precision and reliability while reducing mechanical complexity and improving long-term stability.

The patent applies preliminary action by providing equal and identical signals at both outputs of the power splitter before the signals enter the respective processing paths. This preliminary equalization simplifies manufacturing and ensures accurate signal splitting, while the subsequent digitally controllable phase shifters and attenuators provide the necessary adaptability for different signal processing requirements without compromising the initial signal accuracy.

The patent segments the signal processing function into distinct stages: first, accurate equal signal splitting; second, independent phase and attenuation adjustment for each path. This segmentation allows the power splitter itself to maintain simple accurate manufacturing, while the downstream controllable components provide the required adaptability for different processing scenarios.