RF Power Supply Switching Paths for Stable Amplifier Voltage
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Solution Overview
Problem
Existing power supply circuits in electronic devices face challenges in providing stable supply voltages to radio frequency front end modules, particularly due to issues such as excessive current consumption, audible noise, and potential damage from capacitor deformation and vibration, which can disrupt normal device operation.
Innovation Solution
A power supply circuitry with a third power source and switching circuitry is introduced to provide a third supply voltage through alternative paths, allowing the power amplifier to receive stable voltage even if the primary power supply circuits fail or exceed current limits, thereby maintaining device operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a power supply circuit provides supply voltage to a power amplifier, then the power amplifier can operate, but excessive current consumption and audible noise occur
Solution Approach 1:
The power supply circuit is divided into multiple independent power supply circuitries (first power supply circuitry, second power supply circuitry, third power supply circuitry), each capable of independently providing supply voltage to the power amplifier through separate power paths. This segmentation allows the system to switch between different power sources to avoid excessive current consumption and audible noise from any single circuitry.
Solution Approach 2:
Each power supply circuitry is designed with universal functionality to provide supply voltage to the power amplifier. The first, second, and third power supply circuitries can all independently serve the power amplifier, creating redundancy and allowing the system to select the most appropriate power source based on operational conditions to minimize harmful effects.
2Use of energy by moving object
If capacitors are used in power supply circuits, then power can be stored and supplied, but capacitor deformation and vibration may occur causing potential damage
Solution Approach 1:
The patent introduces a third power supply circuitry as a preventive measure before capacitor damage occurs. When the first or second power supply circuitries experience capacitor deformation or excessive vibration, the system can proactively switch to the third power supply circuitry through the switching circuitries, preventing further damage and ensuring continuous operation without waiting for complete failure.
Solution Approach 2:
Switching circuitries serve as intermediaries between the multiple power supply circuitries and the power amplifier. These switching circuitries monitor the operational status of each power supply path and can isolate faulty circuitries (those with deforming or vibrating capacitors) from the power amplifier, redirecting power flow through healthy paths without direct human intervention.
3Reliability
If multiple power supply paths are provided, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple power supply circuitries and their associated switching mechanisms into an integrated power supply system. The first, second, and third power supply circuitries are merged with their respective switching circuitries to form unified power paths, reducing the need for separate control mechanisms and simplifying the overall system architecture while maintaining high reliability through redundancy.
Data Source
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AI summary
In embodiments, an electronic device is provided. The electronic device includes a processor including processing circuitry, a radio frequency (RF) transceiver, a first power supply circuitry for providing a power amplifier with a first supply voltage, a second power supply circuitry for providing the power amplifier or another power amplifier with a second supply voltage, a first power path connected to the first power supply circuitry, a second power path connected to the second power supply circuitry, wherein a third supply voltage is provided through the third power path, a first switching circuitry configured to connect or not connect the third power path to the first power path, a second switching circuitry configured to connect or not connect the third power path to the second power path, and a radio frequency front end (RFFE) module, including the power amplifier, connected to the first power path and the second power path. The first switching circuitry is controlled to connect the first power path and the third power path while the first supply voltage is not provided to the power amplifier through the first power path. The second switching circuitry is controlled to connect the second power path and the third power path while the second supply voltage is not provided to the power amplifier through the second power path.