Switchable Parasitic Antennas for Body-Effect Wireless Reliability
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Solution Overview
Problem
Mobile devices with antennas, such as earbuds, face performance issues due to environmental interference, like the 'body effect,' which can reduce data throughput and reliability of wireless connections, and increasing antenna power consumes battery life.
Innovation Solution
Incorporating one or more switchable parasitic antennas connected to a ground plane, allowing for adjustable antenna patterns without the complexity of separate switchable driven antennas, with a controller that compares signal strength to switch configurations to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antenna power is increased to improve wireless connection reliability, then data throughput and reliability are improved, but battery consumption increases
Solution Approach 1:
The patent implements dynamic antenna pattern adjustment by switching between different parasitic antenna configurations based on real-time signal conditions. The system monitors connection quality and dynamically reconfigures the antenna pattern to optimize performance without increasing power consumption, resolving the contradiction between reliability and energy use.
Solution Approach 2:
The system changes the antenna radiation pattern parameters by activating different parasitic antenna elements. This allows the antenna to adapt its beam direction and shape to counteract body effects and environmental interference, improving reliability through parameter optimization rather than power increase.
2Adaptability or versatility
If separate switchable driven antennas are used to achieve adjustable antenna patterns, then antenna pattern adjustability is improved, but device complexity increases
Solution Approach 1:
The patent introduces parasitic antennas as intermediary elements that modify the radiation pattern of a single driven antenna. These parasitic elements are switched to create different pattern configurations without requiring multiple independent driven antennas, thus achieving adaptability while keeping the system simpler.
Solution Approach 2:
A single driven antenna serves multiple functions by working in conjunction with switchable parasitic antennas. The driven antenna provides the primary radiation while the parasitic elements modify the pattern, allowing one antenna system to perform what would traditionally require multiple separate antennas.
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 solution enhances wireless communication reliability and data throughput by dynamically adjusting antenna patterns based on environmental conditions, reducing battery consumption.
Implementation Method 1
one or more parasitic antennas each connected to the ground plane via a corresponding switch operable to change an antenna pattern of the driven antenna
Data Source
AI summary
Examples are disclosed that relate to changing an antenna pattern via one or more configurable parasitic antennas. One example provides a wireless device comprising a radio, a driven antenna connected to the radio, a ground plane, and one or more parasitic antennas. Each parasitic antenna connects to the ground plane via a switch operable to change an antenna pattern of the driven antenna.