Sheet Metal Ground Extension for Antenna Sensitivity
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Solution Overview
Problem
The shape and size variability of electronic instrument grounds affect antenna performance, particularly in compact designs where antenna sensitivity is compromised.
Innovation Solution
An electronic instrument design featuring a substrate with a larger second area for electrical connection via a sheet metal contact, forming an antenna current path that couples the substrate and sheet metal unit, enhancing antenna performance by extending the ground length and improving communication sensitivity across multiple model types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the instrument is designed to be compact, then the size is reduced, but the ground length for antenna becomes insufficient
Solution Approach 1:
The patent extends the ground in the vertical direction by having the sheet metal extend below the keyboard plane. The sheet metal includes a first area above the keyboard and a second area below the keyboard, creating a vertical extension that increases ground length without increasing the horizontal footprint of the instrument.
Solution Approach 2:
The patent uses a thin sheet metal structure that can be bent and shaped to extend vertically below the keyboard. This thin film approach allows the ground to extend in three dimensions while maintaining a compact overall instrument size, as the sheet metal can be formed into the required shape without adding significant bulk.
2Reliability
If the ground length is extended to improve antenna performance, then communication sensitivity is improved, but the instrument size increases
Solution Approach 1:
The ground is extended vertically below the keyboard plane rather than horizontally, allowing sufficient ground length for antenna operation while maintaining a compact horizontal footprint. The sheet metal extends downward to provide the required ground length without increasing the instrument's width or depth.
Solution Approach 2:
The sheet metal structure is integrated within the existing instrument housing structure, nesting the extended ground within the vertical space already available in the instrument case. The second area of the sheet metal is positioned within the instrument housing below the keyboard, utilizing existing space rather than adding external volume.
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 enhances communication sensitivity by ensuring a sufficient ground length for the antenna, even in compact electronic keyboard instruments, allowing for effective wireless communication without compromising aesthetics or increasing the instrument's size.
Implementation Method 1
a sheet metal including a contact configured to be electrically connected with the substrate in the second area
Data Source
AI summary
An electronic instrument includes a substrate including a first area in which a connecting terminal is provided for connection with an external device and a second area which is larger than the first area, and a sheet metal including a contact configured to be electrically connected with the substrate in the second area of the substrate and including an opening provided in a position corresponding to a position where the connecting terminal is provided in the first area.