RF Module Switched-Capacitor Tracker for Compact Digital ET PA Supply
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Solution Overview
Problem
The size of power amplifier systems operating in a digital ET mode is increased due to the inclusion of a power amplifier (PA) circuit, a tracker circuit, and a signal processing circuit, which complicates the configuration and increases the overall size of the system.
Innovation Solution
A radio frequency module and communication device are designed with a module laminate that integrates a first voltage supply circuit and a first signal processing circuit, utilizing a switched-capacitor circuit to generate discrete voltages for the power amplifier, reducing the system's size by incorporating these components onto a single laminate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a power amplifier system operates in digital ET mode with separate PA circuit, tracker circuit, and signal processing circuit, then power amplification efficiency is improved, but the system size increases
Solution Approach 1:
The patent combines the voltage supply circuit and signal processing circuit into a single integrated circuit that is disposed on the same module laminate as the power amplifier circuit. This integration reduces the overall system size by eliminating separate components and interconnections, while maintaining the digital ET mode functionality that improves power amplification efficiency.
Solution Approach 2:
The integrated circuit performs multiple functions: it generates the supply voltage for the power amplifier circuit and processes the radio frequency signal. By consolidating these functions into a single component, the patent reduces system complexity and size while preserving the efficient power amplification characteristics of digital ET mode operation.
2Adaptability or versatility
If separate PA circuit, tracker circuit, and signal processing circuit are used, then digital ET mode functionality is achieved, but device complexity increases
Solution Approach 1:
The patent merges the tracker circuit and signal processing circuit functions into the voltage supply circuit, which is integrated with the power amplifier circuit on the same module laminate. This consolidation maintains the sophisticated digital ET mode functionality while reducing the number of discrete components and interconnections, thereby simplifying the overall system configuration.
3Volume of stationary object
If voltage supply circuit and signal processing circuit are integrated on module laminate, then system size is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent integrates the voltage supply circuit and signal processing circuit into a single integrated circuit component that is mounted on the module laminate alongside the power amplifier circuit. This approach reduces the overall module size by consolidating functions, while the integrated circuit itself handles the manufacturing complexity internally, presenting a simpler packaging and assembly process at the module level.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The integration of the switched-capacitor circuit allows for a compact design of the radio frequency module and communication device, maintaining efficient power amplification while reducing the overall size and complexity of the power amplifier system.
Implementation Method 1
a first switched-capacitor circuit configured to generate a plurality of discrete voltages based on an input voltage
Data Source
AI summary
A radio frequency module is provided that includes a module laminate, a tracker circuit configured to generate a supply voltage to a power amplifier and composed of an integrated circuit, and an RFIC. The integrated circuit includes at least one switch included in a switched-capacitor circuit and at least one switch included in a supply modulator. The switched-capacitor circuit is configured to generate a plurality of discrete voltages based on an input voltage and output the generated plurality of discrete voltages to the supply modulator. The supply modulator is configured to selectively output at least one of the generated plurality of discrete voltages to the power amplifier. The RFIC and the integrated circuit are disposed on the module laminate.