RF Module Switching Delay Paths for Temperature Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radio frequency modules experience characteristic deterioration due to temperature variations, leading to inappropriate delays in the power supply voltage output from the tracker module to the power amplifier.
Innovation Solution
Incorporating a switch and/or a thermistor in the radio frequency module to selectively switch between multiple paths with different delay times, allowing for temperature-appropriate delay selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed delay element is used in the power supply voltage path, then the circuit structure is simple, but the delay time becomes inappropriate under temperature variations causing characteristic deterioration
Solution Approach 1:
The patent applies the dynamics principle by making the delay time adjustable rather than fixed. A switch is introduced to select from multiple delay paths (different wire lengths) based on temperature conditions, allowing the system to dynamically adapt the delay time to maintain appropriate synchronization between power supply voltage and RF signal under varying temperature conditions.
Solution Approach 2:
The patent applies parameter changes by varying the delay time parameter according to temperature. Multiple paths with different delay characteristics are provided, and the switch selects the appropriate delay time based on temperature conditions, thereby changing the delay parameter to compensate for temperature-induced variations in RF signal characteristics.
2Reliability
If the delay time is increased to compensate for temperature variations, then the synchronization improves at high temperatures, but the delay becomes excessive at low temperatures causing EVM deterioration
Solution Approach 1:
The system dynamically adjusts the delay time based on temperature conditions through the switch mechanism. At high temperatures, a longer delay path is selected to compensate for reduced signal propagation time, while at low temperatures, a shorter delay path is chosen to avoid excessive delay, thus maintaining optimal synchronization across different operating conditions.
Solution Approach 2:
The delay mechanism is segmented into multiple discrete paths with different delay times. Instead of using a single continuous variable delay, the patent divides the delay function into separate fixed-delay paths (different wire lengths), allowing discrete selection of appropriate delay time based on temperature, simplifying the control mechanism.
3Reliability
If multiple paths with different delay times are provided, then temperature-appropriate delay selection becomes possible, but the device complexity increases due to additional switching components
Solution Approach 1:
The delay function is segmented into multiple fixed-delay paths with different wire lengths. This segmentation allows the system to achieve temperature compensation through discrete path selection rather than requiring complex continuous variable delay circuits, balancing adaptability with simplicity.
Solution Approach 2:
A switch is introduced as an intermediary component to select between multiple delay paths based on temperature conditions. This intermediary element enables temperature adaptability while keeping the overall structure relatively simple, as the switch only needs to perform basic path selection rather than complex signal processing.
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
This solution reduces characteristic deterioration with temperature variations by ensuring a suitable delay time is selected, thereby improving the synchronization of the power supply voltage with the radio frequency signal.
Implementation Method 1
a thermistor connected to a path connecting the external connection terminal and the power amplifier
Data Source
AI summary
A radio frequency module according to an exemplary aspect the present disclosure includes a power amplifier, an external connection terminal configured to receive a power supply voltage that is output from a tracker module and a switch configured to perform switching of a selected path among a plurality of paths for coupling the external connection terminal with the power amplifier, the plurality of paths are configured to have different delay times.