Mobile Terminal Antenna Sidewall Slits 4G 5G Integration
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Solution Overview
Problem
The integration of 4G and 5G antennas in mobile terminals is challenging due to mutual interference, leading to decreased performance and increased device size, as they require separate spaces to function effectively.
Innovation Solution
A mobile terminal design featuring a metal sidewall with slits and slots that serve as both 4G and 5G antennas, utilizing a circuit substrate and power supply units to transmit and receive signals across different frequency bands without the need for additional grounding, allowing both antennas to coexist without increasing the device's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If 4G and 5G antennas are positioned close to each other, then device size is reduced, but mutual interference occurs and performance decreases
Solution Approach 1:
The patent segments the antenna system into distinct 4G and 5G antenna elements with separate feeding networks and grounding paths. The 4G antenna uses a conventional ground plane while the 5G antenna utilizes the metal sidewall as its ground reference, creating electrically isolated segments that prevent mutual interference despite physical proximity
Solution Approach 2:
The patent transitions from planar antenna configurations to three-dimensional spatial arrangement by utilizing the metal sidewall as a vertical grounding structure. This dimensional change allows the 5G antenna to be positioned in the vertical dimension rather than competing for horizontal space, enabling close integration without interference
2Reliability
If separate grounding structures are provided for 4G and 5G antennas, then interference is prevented, but device complexity increases
Solution Approach 1:
The metal sidewall serves multiple functions simultaneously: it acts as the ground reference for the 5G antenna, provides structural support for the device, and enables the antenna radiation pattern formation. This multi-functionality eliminates the need for separate dedicated grounding structures that would increase device complexity
Solution Approach 2:
The metal sidewall naturally provides the grounding function for the 5G antenna without requiring additional components or structures. The sidewall's inherent conductivity and geometric configuration automatically establish the necessary electrical reference plane, making the system self-sufficient
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 design enables efficient transmission and reception of 4G and 5G signals without interference, maintaining performance while preventing the terminal from enlarging due to the dual antenna setup.
Implementation Method 1
a first power supply unit that extends from the circuit substrate to supply current to the antenna member, such that the first radio signal is transmitted and received through the antenna member; and a second power supply unit that supplies current to the slots such that the second radio signal is transmitted and received through the slots
Data Source
AI summary
A mobile terminal includes a terminal main body including a circuit substrate configured to process first and second wireless signals; a sidewall portion including slits and an antenna member exposed outside of the main body so as to make up an appearance of the main body, wherein the antenna member is formed between the slits and includes multiple antenna slots; a first power supply unit extending from the circuit substrate and configured to supply power to the antenna member so the first wireless signal is transmitted and received through the antenna member; and a second power supply unit configured to supply power to the multiple antenna slots such that the second wireless signal is transmitted and received through the multiple antenna slots in a different frequency band than the first wireless signal.