Portable Terminal Antenna Design via Conductive Frame Integration
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Solution Overview
Problem
Portable terminals face challenges in enhancing antenna performance for transmitting and receiving radio electromagnetic waves, particularly in supporting multi-band frequencies while maintaining a slim size and reinforcing the terminal's body structure.
Innovation Solution
The design incorporates a conductive loop formed by a conductive member, ground portion, and connection member to create a dipole antenna, along with additional radiators, which allows for the transmission and reception of radio electromagnetic waves across different frequency bands, and a slot antenna configuration that enables a slimmer form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional antenna design is used to transmit and receive radio electromagnetic waves, then the antenna can support basic communication functions, but the terminal body size increases and structural reinforcement is compromised
Solution Approach 1:
The patent merges the antenna radiating elements with the conductive frame structure of the terminal body. The frame serves dual purposes: providing structural reinforcement and acting as the antenna's radiating elements. This integration eliminates the need for separate antenna components, achieving multi-band frequency support without increasing terminal volume.
Solution Approach 2:
The conductive frame is designed to perform multiple functions simultaneously: it provides mechanical structural support, serves as the antenna's radiating elements for multi-band communication, and forms the ground portion for the antenna circuit. This multi-functionality resolves the contradiction by making the same structure serve both structural and communication purposes.
2Reliability
If the antenna structure is reinforced to improve signal transmission, then the communication performance improves, but the terminal body becomes less slim
Solution Approach 1:
The antenna radiating elements are merged with the thin conductive frame structure, allowing reliable signal transmission without adding thickness. The frame's conductive paths serve as the antenna elements, maintaining the slim profile while ensuring adequate signal quality through proper electromagnetic design.
Solution Approach 2:
The patent utilizes thin conductive films or coatings on the frame structure to create the antenna elements. These thin conductive layers provide sufficient electrical conductivity for reliable communication while maintaining the overall slim thickness of the terminal body.
3Adaptability or versatility
If separate antenna components are added to support multi-band frequencies, then the frequency coverage increases, but the device complexity increases
Solution Approach 1:
Multiple radiating elements are integrated into the single conductive frame structure. Different segments of the frame serve as different radiating elements for various frequency bands, eliminating the need for separate antenna components and reducing overall device complexity while maintaining multi-band capability.
Solution Approach 2:
The conductive frame is designed with multiple functional segments that can operate at different frequency bands. The same frame structure universally supports multiple frequency bands through its different conductive paths and geometric configurations, avoiding the need for separate specialized antennas for each band.
4Reliability
If the ground portion is expanded to improve antenna performance, then the radiation efficiency improves, but the available space in the terminal body decreases
Solution Approach 1:
The ground portion is merged with the conductive frame structure rather than being a separate expanded component. The frame itself serves as the ground portion, providing adequate ground area for antenna operation without occupying additional internal space, as it forms the structural boundary of the terminal anyway.
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 solution enhances the antenna's ability to transmit and receive multi-band frequencies, reinforces the terminal's body, and allows for a more compact design, improving overall performance and functionality.
Implementation Method 1
a first radiator electrically connected to the ground portion so as to be fed by the ground portion, and configured to transmit and receive radio electromagnetic waves
Implementation Method 2
The conductive loop may transmit and receive radio electromagnetic waves of a frequency band different from that of the dipole antenna by being combined with the first radiator
Data Source
AI summary
A portable terminal comprises a ground portion mounted in a body of the portable terminal, and configured to form electrical ground of a circuit board which controls the portable terminal, a conductive member mounted to a case which forms appearance of the body, and formed of a conductive material, a first radiator electrically connected to the ground portion so as to be fed by the ground portion, and configured to transmit and receive radio electromagnetic waves, a second radiator formed of a conductive material, and connected to the conductive member so as to form an antenna pattern together with the ground portion and the conductive member, the antenna pattern consecutive with a feed point of the first radiator, and a connection member configured to electrically connect edges of the ground portion to the conductive member such that the first radiator and the antenna pattern form a dipole antenna.