Mobile Antenna Frame Layout for Longer Electrical Length
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Solution Overview
Problem
Mobile communication devices face challenges in increasing the electrical length of antenna radiators due to limited mounting space, which can reduce the stiffness of metal frames when segmented portions are formed.
Innovation Solution
A mobile communication device design that includes a housing with a first and second conductive portion, where the second conductive portion is spaced apart and formed in parallel with the first, allowing for an extended electrical length without reducing stiffness, using a protrusion and indentation configuration to enhance antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrical length of the antenna radiator is increased to improve wireless communication performance, then the antenna performance is improved, but the mounting space requirement increases which conflicts with the limited device space
Solution Approach 1:
The patent utilizes the thickness direction (third dimension) of the housing to extend the antenna radiator. The conductive portion extends in the thickness direction of the housing, allowing the antenna to achieve longer electrical length without increasing the planar footprint area, thus resolving the contradiction between antenna performance and mounting space constraints
Solution Approach 2:
The antenna radiator is integrated within the housing structure itself. The conductive portion forming the antenna is embedded in or formed as part of the housing, utilizing the existing structural space efficiently. This nesting approach allows the antenna to occupy minimal additional space while achieving the required electrical length for optimal performance
2Adaptability or versatility
If segmented portions are formed in the metal frame to create antenna radiators, then the antenna functionality is achieved, but the stiffness of the metal frame is reduced
Solution Approach 1:
The housing serves multiple functions: it provides structural support for the device and simultaneously functions as the antenna radiator. The conductive portion of the housing acts as both a structural element and an antenna element, eliminating the need for separate segmented portions in the metal frame. This multi-functionality approach maintains frame stiffness while achieving antenna functionality
Solution Approach 2:
The patent merges the structural housing with the antenna radiator function. The conductive portion that forms part of the housing is used directly as the antenna radiator, combining what would traditionally be separate components (structural frame and antenna elements) into a single integrated structure, thereby preserving structural integrity while enabling wireless communication
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 effectively increases the electrical length of the antenna radiator, maintaining the stiffness of the metal frame and improving wireless communication efficiency across various frequency bands.
Implementation Method 1
the wireless communication circuit feeds power to the protrusion to transmit and receive a wireless signal through at least part of the first conductive portion, the second conductive portion, or the conductive member
Data Source
AI summary
A mobile communication device is provided. The mobile communication device includes a housing which includes a first edge and a second edge, the first edge extending in a first direction and the second edge extending from one end of the first edge in a second direction perpendicular to the first direction, a wireless communication circuit, and a conductive member, wherein the housing includes a first conductive portion forming a part of the first edge and having a predetermined length, and a second conductive portion forming an inner frame of the mobile communication device, at least a part of the second conductive portion is spaced apart from the first conductive portion, and includes an indentation formed to correspond to the protrusion of the first conductive portion, and the wireless communication circuit supplies power to the protrusion to transmit/receive a wireless signal through the first conductive portion, the second conductive portion, or at least a part of the conductive member.