Tunable Antenna With Selectable Feed Points
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Small SMD antenna devices face challenges in maintaining consistent resonant frequency and efficiency due to interactions with surrounding components, making them unsuitable for mass production of wireless devices with varying form factors and frequency requirements.
Innovation Solution
A tunable antenna design with multiple feed points allows adjustment of resonant frequency, impedance, and bandwidth by varying the way the antenna is contacted, enabling integration into surface mount components and IC packages for use across different wireless products and frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard SMD antenna design is used, then manufacturing cost and complexity are reduced, but the resonant frequency becomes unstable due to interactions with surrounding components
Solution Approach 1:
The antenna is designed with multiple feed points that can be selectively contacted to achieve different resonant frequencies and impedance values. This universal design allows the same antenna structure to serve multiple frequency requirements (e.g., 2.4 GHz, 5 GHz, Bluetooth, WiFi) without requiring separate antennas for each application, thereby maintaining frequency stability across varying surrounding component interactions.
Solution Approach 2:
The antenna incorporates selectable feed points that enable dynamic adjustment of electrical characteristics. By choosing different feed points based on the specific application and surrounding component layout, the resonant frequency and impedance can be tuned to compensate for interactions with ground planes, plastic covers, and other components, thus maintaining reliable operation.
2Manufacturing precision
If the antenna structure is simplified for mass production, then manufacturing precision is improved, but the ability to compensate for frequency shifts is reduced
Solution Approach 1:
The simplified antenna structure incorporates multiple feed points that provide frequency compensation capability without requiring complex fabrication processes. The same basic antenna geometry can be manufactured with standard precision, yet by selecting different feed points, the antenna can be adapted to compensate for frequency shifts caused by different surrounding component configurations.
Solution Approach 2:
The antenna design allows changing electrical parameters (resonant frequency, impedance) by selecting different feed points rather than changing the physical structure. This enables frequency compensation and adaptation to different applications while maintaining consistent manufacturing processes and precision.
3Adaptability or versatility
If multiple antenna types are used for different frequencies, then frequency coverage is improved, but device complexity and cost increase
Solution Approach 1:
A single antenna structure with multiple feed points can support multiple frequency bands (2.4 GHz, 5 GHz, Bluetooth, WiFi, GPS) by selectively contacting different feed points. This eliminates the need for multiple separate antennas, reducing device complexity while maintaining broad frequency coverage and adaptability.
Data Source
AI summary
The invention refers to an antenna comprising: a conducting trace (15, 20), said conducting trace (15, 20) defining a curve (1, 4, 5, 6, 6′, 6″, 8), said curve (1, 4, 5, 6, 6′, 6″, 8) including two or more feeding points (16a, 16b, 16c, 17, 18, 19), a portion of said curve (1, 4, 5, 6, 6′, 6″, 8) being shaped according a geometry selected from a group of geometries including a space-filling curve, a grid-dimension curve, a box-counting curve and a contour curve or the curve (1, 4, 5, 6, 6′, 6″, 8) or a portion of said curve having a shape of a multilevel structure. Further the invention refers to a related SMD component, an IC-package, a wireless device and a method for contacting an antenna.