Switchable Antenna Pattern Reconstruction for Full-Screen Phones
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Solution Overview
Problem
The challenge is to maintain a good signal receiving capability for antenna apparatuses in mobile terminals with full-screen designs, which have a reduced design space, leading to a decrease in efficiency, bandwidth, and size of the antenna apparatus.
Innovation Solution
The solution involves an antenna apparatus with a design that includes a first and second radiator section connected collinearly, and third, fourth, and fifth radiator sections distributed on the same side, along with a control unit that switches between common and differential modes based on received signal strengths to optimize pattern reconstruction and signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary 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 patent implements dynamic switching between common mode and differential mode operation states. The control unit detects signal strengths and automatically switches the antenna apparatus between modes to optimize receiving capability in different environments, transforming a static antenna design into a dynamic adaptive system that maintains reliability despite size reduction
Solution Approach 2:
The patent changes the operational parameters of the antenna by switching between common mode and differential mode. This parameter change allows the same physical antenna structure to exhibit different radiation patterns and impedance characteristics, enabling the reduced-size antenna to maintain signal receiving capability through parameter adaptation rather than physical size increase
2Area of stationary object
If the size of the antenna apparatus is reduced, then the design space is improved, but the efficiency bandwidth product is reduced
Solution Approach 1:
The patent makes the antenna apparatus multi-functional by enabling it to operate in both common mode and differential mode using the same physical structure. This universality allows a single reduced-size antenna to perform multiple functions that traditionally required different antenna designs, thereby maintaining efficiency bandwidth product without increasing design space requirements
Solution Approach 2:
The dynamic mode switching capability allows the antenna to adapt its electrical characteristics to different frequency bands and operational requirements. This dynamic behavior enables the reduced-size antenna to achieve broader bandwidth coverage and maintain efficiency across multiple operating conditions
3Area of stationary object
If a single antenna apparatus is used to save space, then the design space is improved, but the pattern coverage is excessively centralized and signal receiving capability is reduced
Solution Approach 1:
The patent employs dynamic switching between common mode and differential mode to achieve pattern reconstruction. By detecting the current operational state and signal strengths, the control unit switches modes to optimize radiation patterns for different spatial directions, enabling a single antenna to provide versatile pattern coverage that adapts to different environmental conditions and user scenarios
Data Source
AI summary
An antenna apparatus includes an antenna and a feed source. The antenna includes a first switch, a second switch, a first radiator section and a second radiator section connected to each other, and a third radiator section, a fourth radiator section, and a fifth radiator section. The third radiator section is connected to a junction of the first radiator section and the second radiator section and is grounded, and the fourth radiator section and the fifth radiator section are separately disposed on two sides of the third radiator section and are grounded by the first switch and the second switch. The feed source is electrically connected to the fourth radiator section to feed the antenna. The first switch and the second switch are configured to switch the antenna pattern of the antenna apparatus when covering a same band.