Dual-feedpoint Antenna System for Phantom Head and Hand Performance Balance
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Solution Overview
Problem
Traditional dual-feed antenna systems fail to balance the radio performance between the left and right phantom head and hand, resulting in a 3dB difference due to asymmetric feedpoint placement, which existing technologies have not effectively addressed.
Innovation Solution
A dual-feedpoint antenna system with symmetrically disposed feedpoints and a switch control mechanism that detects and switches between signal strengths to ensure only the feedpoint with better performance is active, balancing the left and right phantom head and hand performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a feedpoint is located at a certain side of a mainboard to simplify the antenna structure, then the antenna structure becomes simpler, but the performance of the left and right phantom head and hand becomes unbalanced with a 3dB difference
Solution Approach 1:
The patent applies asymmetry by intentionally creating two asymmetric feedpoint configurations (first feedpoint on left side, second feedpoint on right side) to address the performance imbalance. Each feedpoint is asymmetrically positioned relative to the antenna elements, allowing selective activation to optimize performance for different phantom head and hand scenarios.
Solution Approach 2:
The patent implements dynamics through the switch control mechanism that dynamically selects between the first and second feedpoints based on operational requirements. The switching capability allows the system to adaptively change the feedpoint configuration to maintain balanced performance across different usage scenarios.
2Adaptability or versatility
If dual feedpoints are used to separate low-frequency and high-frequency signals, then the bandwidth is broadened, but the performance balance between left and right phantom head and hand is not improved and may even deteriorate
Solution Approach 1:
The patent applies segmentation by dividing the antenna system into two independent feedpoint paths (first feedpoint with first matching circuit, second feedpoint with second matching circuit). Each path can be independently optimized and controlled, allowing selective activation to maintain performance balance while preserving bandwidth benefits.
Solution Approach 2:
The patent implements local quality by providing separate matching circuits (first matching circuit and second matching circuit) for each feedpoint. Each matching circuit can be independently optimized for its specific feedpoint configuration, allowing localized performance optimization without affecting the other feedpoint path.
3Reliability
If switches are added to enable feedpoint switchover, then the performance balance is improved, but the device complexity increases
Solution Approach 1:
The patent applies universality by designing the switch control mechanism to perform multiple functions: selecting between feedpoints, controlling matching circuits, and adapting to different operational modes. This multi-functionality reduces the need for separate control mechanisms for each function, thereby limiting the increase in overall device complexity.
Data Source
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AI summary
a system includes: a first feedpoint and a second feedpoint symmetrically disposed on the left and right sides of an antenna on a small board, a first switch and a second switch, and a third switch disposed on a mainboard. The first switch, the second switch, and the third switch are controlled through a control instruction so that the system is in a first connection state and a second connection state. Signal strength corresponding to the first connection state and signal strength corresponding to the second connection state are detected, and if the signal strength corresponding to the first connection state is greater than the signal strength corresponding to the second connection state, each switch is controlled through an instruction so that the system is in the first connection state, in which the first feedpoint is working; otherwise, the second feedpoint is working.