Tunable LTE Antenna Mode Switching via Coupling Control
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Solution Overview
Problem
The complexity of designing antennas for both 3G and 4G mobile communication systems, specifically the long term evolution (LTE) technology, arises from the need to accommodate multiple communication specifications, increasing design complexity.
Innovation Solution
A tunable long term evolution antenna is designed with a feeding portion, grounding portion, first and second radiation portions, and a coupling radiation portion, where the switching terminal of the coupling radiation portion determines whether it is coupled to the ground or floating, allowing the antenna to operate in either LTE or 3G mode, simplifying the structure and mode switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate antenna designs are applied for 3G and 4G LTE systems, then both communication specifications can be met, but the antenna design complexity increases
Solution Approach 1:
The patent designs a single antenna structure that can operate in both 3G and 4G LTE modes by using a shared radiating element and ground structure. The antenna achieves multi-functionality through mode switching mechanisms that allow the same physical structure to support different communication standards, thereby reducing the need for separate antenna designs while maintaining compatibility with multiple specifications.
Solution Approach 2:
The patent employs dynamic switching mechanisms including switching components and adjustable impedance elements that allow the antenna to transition between 3G and 4G LTE operating modes. This dynamic capability enables the antenna to adapt its electrical characteristics based on the required communication standard, resolving the contradiction by providing both versatility and simplified design through a single reconfigurable structure.
2Device complexity
If a single antenna structure is used for both 3G and 4G LTE modes, then design complexity is reduced, but mode switching capability must be implemented
Solution Approach 1:
The patent introduces switching components and impedance adjustment mechanisms as intermediary elements that facilitate mode switching between 3G and 4G LTE operations. These intermediaries enable the single antenna structure to transition between modes by controlling the electrical connection states and impedance values, thereby maintaining structural simplicity while providing effective mode switching capability.
Solution Approach 2:
The patent achieves mode switching by changing electrical parameters such as impedance values and connection states within the antenna structure. By adjusting these parameters through switching components and variable impedance elements, the antenna can transition between 3G and 4G LTE modes, resolving the contradiction between structural simplicity and operational flexibility.
Data Source
AI summary
A tunable long term evolution antenna comprises a feeding portion, a grounding portion, a first radiation portion, a second radiation portion and a coupling radiation portion. The shape of the first radiation portion is a strip. Two terminals of the strip respectively are a first terminal and a second terminal. The first terminal is connected to the feeding portion and the grounding portion. The second radiation portion is connected to the grounding portion and the first terminal of the first radiation portion. The coupling radiation portion has a switching terminal coupled to a switch, a low frequency coupling portion and a high frequency coupling portion. The switch controls the switching terminal to be coupled to the ground or floating. The tunable long term evolution antenna operates in a LTE technology mode or a 3G mode depending on the switching terminal is coupled to the ground floating.