Housing Antenna Layout Using Conductive Patterns for Multi-Band Tuning
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Solution Overview
Problem
Existing electronic devices face challenges in optimizing the resonant frequency of signals transmitted and received through antenna radiators due to the conductive portions of the housing, which are electrically connected to printed circuit boards, leading to interference and inefficiencies in wireless communication.
Innovation Solution
The electronic device incorporates a non-conductive structure between the frame and support, with a conductive pattern extending along the outer side, providing an electrical connection between the PCB and the conductive portion, allowing for separate frequency bands to be transmitted or received through the conductive pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conductive portion is electrically connected to the printed circuit board through a connecting portion, then the antenna radiator can transmit and receive signals, but interference and inefficiencies occur in wireless communication due to the conductive housing structure
Solution Approach 1:
The conductive portion is divided into multiple conductive patterns positioned at different locations. Each conductive pattern can be independently configured to support different frequency bands, allowing the system to segment the communication functions and reduce mutual interference between different signal frequencies.
Solution Approach 2:
Different conductive patterns are designed with different geometries and positions to optimize performance for specific frequency bands. The conductive patterns are strategically placed to create localized electromagnetic characteristics that enhance signal transmission for particular frequencies while minimizing interference from other bands.
2Adaptability or versatility
If a single conductive portion is used for antenna radiation, then the structure is simple, but the ability to utilize multiple frequency bands is limited
Solution Approach 1:
The conductive patterns on the housing serve multiple functions: they act as both structural components of the device housing and as antenna radiators for wireless communication. By configuring different conductive patterns with different geometries, the same housing structure supports multiple frequency bands without requiring separate antenna components for each band.
Solution Approach 2:
The antenna radiation function is merged with the housing structure itself. The conductive patterns are integrated into the housing design, combining the mechanical support function with the electromagnetic radiation function, thereby eliminating the need for separate antenna structures and reducing overall device complexity.
3Reliability
If the conductive pattern extends along the outer side of the non-conductive structure, then electrical connection between PCB and conductive portion is achieved, but the resonant frequency optimization becomes more challenging
Solution Approach 1:
The conductive patterns are designed with adjustable geometric parameters such as length, width, and positioning that can be optimized during the design phase to achieve desired resonant frequencies. The patterns can be configured in different arrangements to dynamically adjust the electrical characteristics and resonant properties of the antenna system.
Solution Approach 2:
By changing the geometric parameters of the conductive patterns (such as trace width, length, spacing, and position relative to the PCB), the resonant frequency of the antenna can be precisely tuned. The design allows for parameter optimization to achieve accurate frequency control while maintaining stable electrical connections through the non-conductive structure.
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 enhances the efficiency and flexibility of wireless communication by allowing multiple frequency bands to be utilized effectively, reducing interference and improving signal transmission and reception.
Implementation Method 1
a conductive pattern in contact with the at least one protruding portion and extending along an outer side of the non-conductive structure, a connecting portion electrically connecting the PCB and the conductive pattern
Implementation Method 2
A resonant frequency of a signal transmitted and/or received through the antenna radiator may be determined based on a length of the antenna radiator
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing including a frame at least partially surrounding an internal volume of the electronic device, a support disposed in the internal volume, and a non-conductive structure in contact with the frame and the support, a printed circuit board (PCB) disposed on the support, a conductive portion, defining a portion of the frame, including at least one protruding portion protruding toward the internal volume, a conductive pattern, in contact with the at least one protruding portion, extending along an outer surface of the non-conductive structure, a connection portion electrically connecting the PCB and the conductive pattern, respectively, and wireless communication circuitry electrically connected to the PCB, configured to communicate with an external electronic device via at least a portion of the conductive pattern.