Antenna Calibration Structure for Phase-Matched Multi-Antenna Tuning
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Solution Overview
Problem
Existing antenna structures with multiple antennas face challenges in maintaining optimal signal calibration, leading to degraded radiation performance due to factors like hand-grip and USB effects, which are not effectively addressed by single couplers.
Innovation Solution
A structure and method that include a first and second antenna, a processor, a power distribution circuit, and a coupler, where the processor detects phase differences and adjusts parameters to maintain a specified reflection coefficient range, ensuring consistent performance across multiple antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If parameters are sensed through a single coupler, then device complexity is reduced, but antenna radiation performance is degraded
Solution Approach 1:
The patent divides the signal calibration function into separate segments for each antenna. Instead of using a single coupler for multiple antennas, the system implements individual calibration paths where each antenna's parameters (reflection coefficient, voltage standing wave ratio, return loss) are measured and calibrated independently through its own signal path, ensuring optimal performance for each antenna element.
Solution Approach 2:
The patent adjusts calibration parameters dynamically based on detected phase differences between antennas. The system measures parameters for signals received by each antenna and modifies calibration settings to maintain phase coherence across multiple antennas, thereby optimizing radiation performance while managing system complexity.
2Measurement precision
If a tuner for signal calibration is used, then signal calibration capability is improved, but the tuner fails to operate normally when parameters are sensed through a single coupler
Solution Approach 1:
The calibration system is segmented into independent measurement and adjustment units for each antenna. Each antenna has its own parameter sensing and tuning capability, allowing the tuner to operate independently on each antenna without interference from other antennas, thus ensuring normal operation while maintaining high measurement precision.
Solution Approach 2:
The system implements feedback mechanisms where parameters for signals received by each antenna are continuously measured and fed back to the tuner. Based on this feedback, the tuner automatically adjusts calibration parameters to maintain optimal signal conditions, ensuring both precise measurement and normal operation.
3Adaptability or versatility
If multiple antennas are used to support wireless communication, then communication capability is improved, but antenna radiation performance is degraded by hand-grip and USB effects
Solution Approach 1:
The patent dynamically adjusts calibration parameters for each antenna based on detected phase differences and signal conditions. By continuously monitoring and adjusting parameters such as reflection coefficients and voltage standing wave ratios, the system compensates for performance degradation caused by hand-grip effects and USB effects, maintaining reliable radiation performance across multiple antennas.
Solution Approach 2:
The system applies localized calibration adjustments to each antenna element based on its specific operating conditions. Each antenna's calibration parameters are independently optimized to account for local environmental factors such as hand-grip proximity or USB connector interference, thereby maintaining overall system performance despite varying local conditions.
Data Source
AI summary
An antenna structure includes a first antenna, a second antenna, at least one processor, a power distribution circuit configured to equally supply power supplied from the processor(s) to the first antenna and the second antenna, and a coupler disposed between the processor(s) and the power distribution circuit, wherein the processor(s) may obtain a first parameter for a first signal received by the first antenna and a second parameter for a second signal received by the second antenna, detect a phase difference between the first signal and the second signal, obtain a matching parameter based on parameters corresponding to a case in which the phase difference satisfies a specified condition among the first parameter and the second parameter, and obtain a third parameter for allowing a reflection coefficient of a signal flowing from the power distribution circuit to the coupler to exist within a specified range among the matching parameters.