Front End Module Multi-Band Control Voltage Reduction
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Solution Overview
Problem
Front end circuits for multiple frequency bands require a large number of control voltages to simultaneously process various modes, limiting their ability to handle multiple frequency bands efficiently.
Innovation Solution
A front end module with separate band amplifying processors for different frequency bands, each connected to a controller that generates and provides specific control voltages to manage amplification and bypass modes, reducing the overall number of control voltages needed while allowing simultaneous operation of multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a front end circuit is designed to process multiple frequency bands simultaneously, then the processing capability for multiple frequencies is improved, but the number of control voltages required increases significantly
Solution Approach 1:
The front end circuit is divided into multiple independent frequency band processing units (first frequency band processing unit, second frequency band processing unit, etc.), where each unit can be independently controlled. This segmentation allows each unit to handle specific frequency bands with dedicated control signals, reducing the overall complexity of controlling multiple bands simultaneously while maintaining the capability to process multiple frequencies in parallel
Solution Approach 2:
The patent introduces a new control dimension by adding a frequency band selection signal in addition to the mode control signal. This dimensional expansion allows the system to differentiate between frequency bands using the band selection signal, enabling independent control of each band's processing unit without requiring separate control voltages for every possible band combination, thus reducing control complexity while maintaining multi-band capability
Data Source
AI summary
A front end module including a first band amplifying processor configured to amplify signals in a first frequency band; a second band amplifying processor configured to amplify signals in a second frequency band; and a controller configured to output separate control voltages to the first and second band amplifying processors to control modes of the first and second band amplifying processors.