Adaptive Wireless Circuit for Antenna Matching Stability
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Solution Overview
Problem
The communication quality of mobile phones is degraded due to changes in the surrounding environment, such as static electricity from a user's hand, which affects the antenna circuit's matching characteristics and shifts the working frequency band.
Innovation Solution
A wireless communication circuit with a sensing unit, control unit, and wireless communication unit that detects surrounding objects and adjusts its circuit configuration using a control signal to maintain optimal frequency band performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the antenna circuit is integrated with the back lid to save circuit area, then the antenna space is increased for higher radiation efficiency, but the matching characteristics of the antenna circuit change when the user touches or approaches the back lid, causing shift in working frequency band and degradation of signal transmission quality
Solution Approach 1:
The patent applies dynamics by making the matching circuit configuration adjustable and adaptive. The system dynamically switches between different matching circuit configurations (first and second configurations) based on detection of surrounding objects. This dynamic adaptation resolves the contradiction by allowing the circuit to maintain optimal matching characteristics regardless of whether the back lid is touched or approached, thus preserving signal transmission quality while maintaining the integrated design.
Solution Approach 2:
The patent changes the parameters of the matching circuit based on detection signals. When a surrounding object is detected, the system switches to a second matching circuit configuration; otherwise, it uses a first configuration. This parameter change approach allows the antenna circuit to compensate for changes in surrounding dielectric constant caused by user contact, thereby maintaining stable working frequency band and signal quality while keeping the integrated back lid design.
2Adaptability or versatility
If the antenna circuit is integrated with the back lid, then more antenna space is available, but surrounding objects like human hands with static electricity cause changes in electric charges and equivalent surrounding dielectric constant, resulting in changes of matching characteristics
Solution Approach 1:
The system dynamically adjusts the matching circuit configuration in response to changes in surrounding conditions. By detecting the presence of surrounding objects and switching between different matching circuit configurations, the system maintains stable matching characteristics despite changes in antenna space utilization caused by user contact with the integrated back lid.
Solution Approach 2:
The patent implements feedback by using a detection unit to monitor the surrounding environment and feed this information back to the control unit. The control unit then adjusts the matching circuit configuration accordingly. This feedback mechanism ensures that matching characteristics remain stable even when the antenna space is affected by surrounding objects like human hands.
3Device complexity
If no adaptive adjustment is made, then the circuit configuration remains simple and fixed, but the working frequency band shifts and communication quality degrades when the device is touched or approached by an object
Solution Approach 1:
The patent introduces dynamic adaptability to the circuit configuration through the detection unit and control unit. Although this increases device complexity slightly, it enables the system to automatically adjust matching circuit configurations based on surrounding conditions, thereby maintaining reliable communication quality regardless of user contact or approach to the device.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively prevents degradation of communication quality by adaptively adjusting the circuit configuration, ensuring stable signal transmission performance even when the device is touched or approached by an object.
Implementation Method 1
a sensing unit for detecting existence of a surrounding object, to generate a sensing signal
Data Source
AI summary
A wireless communication circuit includes a sensing unit, a control unit and a wireless communication unit. The sensing unit is for detecting existence of a surrounding object, to generate a sensing signal. The control unit is coupled to the sensing unit, for generating a control signal according to the sensing signal. The wireless communication unit is coupled to the control unit, for adaptively adjusting a circuit configuration of the wireless communication unit according to the control signal.