Antenna Open Conductor for Frequency Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Antennas in electronic devices experience changes in frequency characteristics due to surrounding components, making it challenging to achieve desired performance across different types of devices without adjusting the antenna's shape, which is not feasible due to varying environments.
Innovation Solution
An antenna design featuring a dielectric board with a monopole antenna element and an open conductor connected to the GND portion, where the open conductor protrudes from the power supply point, allowing adjustments in length and angle to improve reflectance properties without altering the antenna's pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna shape is adjusted to compensate for frequency characteristic changes, then the frequency characteristics are improved, but the adaptability to different electronic devices deteriorates
Solution Approach 1:
The invention introduces an adjustable ground portion that can be positioned at different locations along the antenna structure. This dynamic adjustment capability allows the same antenna to be adapted to different electronic device environments without changing the antenna's basic shape, thereby maintaining frequency characteristics while improving adaptability across different devices
Solution Approach 2:
The invention changes the parameter of ground portion location rather than altering the antenna shape. By adjusting the position of the ground portion along the antenna structure, the electrical characteristics are modified to compensate for environmental changes, achieving frequency optimization without sacrificing adaptability to different devices
2Volume of moving object
If the antenna is mounted in limited space, then the device size is reduced, but the frequency characteristics deteriorate
Solution Approach 1:
The adjustable ground portion allows optimization of frequency characteristics within constrained spaces. By repositioning the ground portion, the antenna can achieve proper impedance matching and resonance even in limited mounting areas, maintaining reliability without requiring larger device volume
Solution Approach 2:
The invention modifies the local structure by adding an adjustable ground portion at specific locations on the antenna. This local adjustment enables frequency characteristic optimization without changing the overall antenna size, allowing compact mounting while maintaining performance
Data Source
AI summary
An antenna used in wireless communication, provided with an antenna element and a GND portion on a dielectric board and mounted in an electronic device, includes a open conductor having a high-frequency connection to the GND portion at an end of the dielectric board in the opposing corner direction from a power supply point of the antenna element. The length of the GND portion in the vertical direction relative to the propagation direction of a high-frequency signal is less than ¼ the wavelength of the operating frequency of the antenna element.