Tunable Matching Network Calibration for Wireless Devices
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Solution Overview
Problem
Existing multi-frequency wireless devices face inefficiencies due to size and design constraints, impacting antenna performance across various frequency bands and user environments, and rely on fixed circuit components that compromise power transfer.
Innovation Solution
A tunable matching network with a reactive element, controlled by a look-up table, is used to optimize performance parameters by selecting and calibrating subsets of tuning states, performing actual and estimated measurements, and identifying desirable characteristics for improved efficiency and power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a simple circuit with fixed value components is used to improve power transfer, then power transfer efficiency is improved, but adaptability to multiple frequency bands and use cases deteriorates
Solution Approach 1:
The patent transforms the fixed circuit into a dynamic system by introducing a tunable matching network with variable components. The matching network can be adjusted in real-time to different tuning states, allowing optimal power transfer across multiple frequency bands and use cases. This resolves the contradiction by making the circuit adaptive rather than static.
Solution Approach 2:
The patent changes the parameters of the circuit components from fixed values to variable values. The matching network includes components whose electrical characteristics can be varied to achieve different tuning states, enabling the system to adapt to different frequency bands and environmental conditions while maintaining optimal power transfer efficiency.
2Measurement precision
If full calibration measurements are performed across all tuning states, then measurement precision is improved, but productivity deteriorates due to millions of required measurements
Solution Approach 1:
The patent applies partial action by performing calibration measurements on only a subset of tuning states rather than all possible states. The system selects a representative subset of tuning states that capture the essential performance characteristics, reducing the number of measurements from millions to a manageable number while maintaining sufficient calibration accuracy.
Solution Approach 2:
The patent uses interpolation to create estimated calibration data for tuning states that were not directly measured. By measuring a subset of states and mathematically estimating the characteristics of unmeasured states, the system achieves comprehensive calibration coverage without performing exhaustive measurements on every possible tuning state.
3Adaptability or versatility
If a tunable matching network is implemented to improve adaptability, then adaptability to multiple frequency bands is improved, but device complexity increases
Solution Approach 1:
The patent introduces a tunable matching network with variable components that can be adjusted to different tuning states. This dynamic structure allows the circuit to adapt to multiple frequency bands and use cases, resolving the contradiction between adaptability and complexity by making the system configurable rather than requiring multiple fixed circuits.
Solution Approach 2:
The patent creates a universal matching network that can serve multiple functions across different frequency bands and use cases. Rather than implementing separate circuits for each frequency band, a single tunable matching network performs all functions by adjusting its parameters, reducing overall device complexity while maintaining versatility.
Data Source
AI summary
A system that incorporates teachings of the present disclosure may include, for example, a computer-readable storage medium having computer instructions to perform actual measurements of one or more performance parameters of a communication device according to a subset of tuning states of a tunable matching network operable in a communication device, determine estimated measurements of the one or more performance parameters of the communication device for a portion of the tuning states not included in the subset of tuning states according to the actual measurements, identify a data set for each of the one or more performance parameters from at least portions of the tuning states and the actual and estimated measurements, and determine from at least a portion of the date sets one or more tuning states that achieve at least one desirable performance characteristic of the communication device. Additional embodiments are disclosed.