Terminal Antenna Metal Frame with Breaking Joints
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Solution Overview
Problem
The integration of metal frames in terminals interferes with antenna performance due to signal interference, particularly when metal frames are used to enhance aesthetics, leading to suboptimal signal reception and transmission.
Innovation Solution
The design incorporates a metal frame with breaking joints that divide it into a bottom frame and a side frame, featuring a signal feed point connected through a first radiation unit and at least two grounding points connected through a second radiation unit, which generates low-frequency resonance, reducing ground wire impedance and widening the frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a metal frame is adopted to improve aesthetics, then appearance quality is improved, but antenna signal performance deteriorates due to interference
Solution Approach 1:
The metal frame is divided into multiple segments through breaking joints, creating a bottom frame and side frame. This segmentation allows the antenna system to maintain the aesthetic metal frame appearance while reducing continuous metal interference with signal transmission by introducing gaps in the metal structure.
Solution Approach 2:
A circuit board is introduced as an intermediary component between the metal frame and the antenna radiation units. The circuit board provides a non-conductive substrate that supports the radiation units while being positioned within the metal frame, thereby maintaining aesthetic appearance while enabling proper antenna function through the mediating structure.
2Adaptability or versatility
If grounding points are connected through a second radiation unit to generate low-frequency resonance, then frequency band is widened, but device complexity increases
Solution Approach 1:
The second radiation unit serves multiple functions simultaneously: it provides grounding connection, generates low-frequency resonance, and widens the frequency band. By making this single component multi-functional, the patent achieves frequency band expansion without proportionally increasing device complexity.
Solution Approach 2:
The grounding function and radiation function are merged into a single second radiation unit. Instead of having separate grounding wires and radiation elements, the patent combines these functions, allowing the same structure to provide both electrical grounding and resonant radiation properties.
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 configuration improves the antenna's performance by dispersively flowing current into the main grounding point, widening the low-frequency resonance frequency band and enhancing the antenna's performance in that range, while maintaining aesthetic appeal and stability.
Implementation Method 1
the bottom frame may be configured to generate low-frequency resonance
Data Source
AI summary
An antenna for a terminal includes: a metal frame surrounding four sides of the terminal, a circuit board positioned within the metal frame and at least two radiation units arranged on the circuit board. The metal frame includes a bottom frame and a side frame defined by two breaking joints disposed on a side of the metal frame. A signal feed point is arranged on the circuit board, the signal feed point is connected with the bottom frame through a first radiation unit. At least two first grounding points are also arranged on the circuit board, the at least two first grounding points are positioned on one side of the signal feed point, the at least two first grounding points are connected with the bottom frame through a second radiation unit, and the bottom frame is configured to generate low-frequency resonance.