Mobile Antenna Pattern Reconstruction Under Full-Screen Space Limits
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Solution Overview
Problem
The full-screen design of mobile terminals reduces the design space available for antenna apparatuses, leading to a decrease in efficiency and bandwidth, compromising the capability to receive signals from base stations.
Innovation Solution
An antenna apparatus with a control unit that switches between common and differential modes based on signal strength, adjusting current distribution and frequency tuning to optimize signal reception, utilizing a configuration of radiator sections and switches for improved band coverage and signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the size of the antenna apparatus is reduced to accommodate full-screen design, then the screen-to-body ratio is improved, but the efficiency bandwidth product and signal receiving capability are reduced
Solution Approach 1:
The antenna apparatus employs dynamic switching between common mode and differential mode operations through a control unit that monitors signal strength and automatically selects the optimal mode. This dynamic adaptation allows the antenna to maintain reliable signal receiving capability despite the reduced physical size, as the switching mechanism compensates for spatial constraints by optimizing electromagnetic field distribution in real-time
Solution Approach 2:
The invention changes the operational parameters of the antenna by utilizing two distinct modes (common mode and differential mode) with different radiation patterns and impedance characteristics. The control unit switches between these parameter sets based on environmental conditions and signal requirements, enabling the small antenna to achieve performance equivalent to larger antennas through parameter optimization rather than physical expansion
2Area of stationary object
If the design space for the antenna apparatus is reduced, then the full-screen design is achieved, but the bandwidth and efficiency are reduced
Solution Approach 1:
The antenna apparatus is designed to perform multiple functions within a single compact structure. It can operate in both common mode and differential mode, effectively serving as two different antenna types in one physical entity. This multi-functionality allows the reduced design space to support diverse communication requirements across different frequency bands and signal conditions, maintaining high efficiency bandwidth product despite spatial constraints
Solution Approach 2:
The control unit dynamically switches between common mode and differential mode operations based on real-time signal strength monitoring and environmental conditions. This dynamic adaptation enables the antenna to optimize its efficiency bandwidth product for different operating scenarios, compensating for the reduced physical size through intelligent parameter adjustment rather than relying solely on physical dimensions
3Device complexity
If a single antenna structure is used, then the device complexity is reduced, but the adaptability to different signal environments is limited
Solution Approach 1:
The control unit provides dynamic adaptability by monitoring signal strength and automatically switching between common mode and differential mode operations. This dynamic control mechanism enables a single antenna structure to adapt to different signal environments and reconstruct radiation patterns as needed, achieving high versatility without increasing physical complexity
Solution Approach 2:
The invention achieves pattern reconstruction capability by changing the operational parameters of the antenna through mode switching. The control unit adjusts the impedance and current distribution parameters by switching between common mode and differential mode, allowing a single simple antenna structure to produce different radiation patterns suitable for various signal environments
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
Enhances signal receiving capability by dynamically switching between modes to achieve a wider coverage area and stronger signal reception, effectively addressing the space constraints in full-screen designs.
Implementation Method 1
a feed source, electrically connected to the fourth radiator section to feed the antenna unit to obtain a common mode and a differential mode
Implementation Method 2
the control unit controls a working mode of the antenna unit, so that the working mode is switched based on an environment
Data Source
AI summary
An antenna apparatus having an antenna. The antenna comprises a first radiator section and a second radiator section coupled to each other, and a third radiator section, a fourth radiator section, and a fifth radiator section that are distributed on a same side of the first and second radiator sections, wherein the third radiator section is coupled to a junction of the first and second radiator sections and is grounded, and the fourth and fifth radiator sections are separately disposed on two sides of the third radiator section, wherein the fourth radiator section is grounded by a first switch, and the fifth radiator section is grounded by a second switch.