Antenna Structure with Split Stubs for Hand Phantom Efficiency
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Solution Overview
Problem
Antennas in handheld electronic devices, such as mobile phones or tablets, suffer from reduced performance and communication quality due to hand phantom efficiency reduction, especially when the user holds the device, causing the antenna to the antenna structure, and the antenna structure, and the antenna structure, and the antenna structure, which is caused by the user's hand blocking the signal transmission and reception, leading to reduced communication quality and user experience.
Innovation Solution
The solution involves an antenna structure with a first antenna stub, a second antenna stub, and matching circuits with inductors to reduce hand phantom efficiency by minimizing the electric field penetration through the user's hand, using a split loop structure and adjusting the electric field components to minimize hand phantom efficiency reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If antennas are designed along perimeter border frames in handheld electronic devices, then the antenna structure is simple and compact, but the hand phantom efficiency reduction is large when users hold the device
Solution Approach 1:
The antenna structure is divided into a first antenna stub and a second antenna stub, which are connected to each other. The second antenna stub has two ports that are separately grounded through first and second matching circuits. This segmentation allows different parts of the antenna to have different electric field distributions, with the second antenna stub generating a normal electric field component that penetrates the human body less, thereby reducing hand phantom efficiency reduction while maintaining structural compactness.
Solution Approach 2:
The patent applies different matching circuits (first matching circuit with first inductor, second matching circuit with second inductor) to different ports of the second antenna stub. This local quality adjustment optimizes the electric field distribution at specific locations, creating a normal electric field component at the second antenna stub that reduces penetration through the human body, thereby improving hand phantom efficiency locally without increasing overall device complexity.
2Loss of energy
If the antenna generates a tangential electric field component parallel to the interface, then the electric field penetrates the human body more, but this increases hand phantom efficiency reduction and reduces communication quality
Solution Approach 1:
The patent changes the electric field parameters by introducing a second antenna stub with specific grounding configurations through matching circuits. This modifies the electric field distribution to increase the normal component and reduce the tangential component at the interface with the human body. The parameter change in electric field orientation reduces penetration through the human body and minimizes hand phantom efficiency reduction, thereby improving communication quality.
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
The proposed antenna structure effectively reduces hand phantom efficiency, improving antenna performance and communication quality by minimizing the electric field penetration through the user's hand, thereby enhancing user experience.
Implementation Method 1
After the antenna structure is excited to generate an electric field, an electric field component perpendicular to the first interface is a normal component of the electric field, and an electric field component parallel to the first interface is a tangential component of the electric field.
Implementation Method 2
the first matching circuit includes a first inductor, and the second matching circuit includes a second inductor
Data Source
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Figure 5~6
AI summary
An antenna structure and an electronic device are provided, relating to the field of terminal technologies and the field of antenna technologies. The antenna structure includes a first antenna stub, a second antenna stub, a first matching circuit, and a second matching circuit, where the first antenna stub is connected to the second antenna stub; the second antenna stub includes a first port and a second port, the first port is grounded through the first matching circuit, the second port is grounded through the second matching circuit, the first matching circuit includes a first inductor, and the second matching circuit includes a second inductor; and the first antenna stub includes a third port, and the third port is configured to be connected to a first feed. According to the solution, a hand phantom efficiency reduction of an antenna is alleviated, and hand phantom efficiency of the antenna is improved. In this way, performance of the antenna is improved, and communication quality and user experience are ensured.