Wearable Antenna Signal Processing Circuit with Dynamic Impedance Tuning
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Solution Overview
Problem
Wearable devices, such as smart watches, face deteriorated antenna performance due to changes in usage environments and individual differences, leading to suboptimal user experience.
Innovation Solution
An antenna signal processing circuit comprising an antenna tuning circuit, a signal processor, and a comparator, which dynamically adjusts the matching impedance of the antenna tuning circuit based on comparisons between the antenna signal and a reference signal to optimize antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna tuning circuit and antenna environment are fixed after antenna designing, then the device structure is simple and manufacturing is easy, but the antenna performance deteriorates due to changes in usage environments and individual differences
Solution Approach 1:
The patent applies dynamics by making the antenna tuning circuit adjustable rather than fixed. The circuit can dynamically change its impedance characteristics based on detected signal conditions, allowing it to adapt to different usage environments and individual differences while maintaining reliable antenna performance
Solution Approach 2:
The patent implements feedback by detecting the antenna signal and using this information to adjust the tuning circuit parameters. The detection result feeds back to the signal processor, which then modifies the impedance of the tuning circuit to optimize antenna performance under varying conditions
2Adaptability or versatility
If the matching impedance of the antenna tuning circuit is dynamically adjusted, then the antenna performance is optimized for different usage environments, but the device complexity increases
Solution Approach 1:
The matching impedance is made dynamic through the signal processor that continuously adjusts the tuning circuit parameters based on real-time signal detection, enabling the antenna system to adapt to various usage environments and individual differences
Solution Approach 2:
The patent changes the impedance parameters of the antenna tuning circuit dynamically. By adjusting resistance, inductance, or capacitance values based on detected signal conditions, the system achieves versatile antenna performance across different environments without requiring multiple fixed circuits
Data Source
AI summary
A wearable device and an antenna signal processing circuit and method thereof are disclosed. The antenna signal processing circuit comprises: an antenna tuning circuit, a signal processor and a comparator. The antenna tuning circuit comprises a controlling end, a load end and a signal source end. The load end is connected to an antenna of the wearable device, the signal source end is connected to a first input end of the comparator, a reference signal is inputted to a second input end of the comparator, an output end of the comparator is connected to an input end of the signal processor, and an output end of the signal processor is connected to the controlling end. The signal processor generates an adjusting signal according to a comparison result outputted by the comparator, to adjust a matching impedance of the antenna tuning circuit, to realize dynamic adjusting of antenna signals.