Antenna Array OTA Calibration for Power and Phase Consistency
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Solution Overview
Problem
In 5G wireless communication systems, calibrating the power amplification and phase characteristics of antenna arrays is inefficient and often results in inaccurate calibration due to the need for separate verification and calibration of each antenna element.
Innovation Solution
An electronic device is designed with an antenna array, power amplifiers, phase shifters, and a processor that can calibrate power amplification and phase characteristics using an over-the-air (OTA) method, allowing for simultaneous calibration of multiple antenna elements and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate verification and calibration is performed for each antenna element, then individual element accuracy can be verified, but calibration efficiency is reduced and calibration accuracy deteriorates
Solution Approach 1:
The patent combines multiple antenna elements into an antenna array and performs calibration on the array level rather than individually calibrating each element. This merging approach maintains calibration accuracy while significantly improving calibration efficiency by reducing the number of separate calibration operations required.
Solution Approach 2:
The calibration method is designed to work universally for antenna arrays with multiple elements, providing a single calibration procedure that can be applied to the entire array rather than requiring element-specific calibration procedures. This multi-functional approach resolves the contradiction between individual accuracy and overall efficiency.
2Ease of operation
If calibration is performed per antenna element, then detailed control over each element is achieved, but the calibration process becomes complex and time-consuming
Solution Approach 1:
By merging the calibration process to operate on the antenna array as a unified entity rather than on individual elements, the patent simplifies the calibration process and reduces the time required while maintaining the necessary control over the system's performance.
3Reliability
If traditional calibration methods are used for antenna arrays, then existing processes can be maintained, but calibration accuracy and consistency across antenna elements deteriorate
Solution Approach 1:
The patent introduces dynamic adjustment capabilities in the calibration process, allowing the system to adaptively optimize calibration parameters for the entire antenna array. This dynamic approach improves performance consistency across elements while managing system complexity through intelligent control rather than rigid fixed procedures.
Data Source
AI summary
An electronic device is provided. The electronic device includes an antenna array configured to include a plurality of antenna modules, a communication circuit configured to include a plurality of power amplifiers connected with the plurality of antenna elements and a plurality of phase shifters, at least one processor operatively connected with the communication circuit, and a memory operatively connected with the at least one processor and includes instructions.