Patch Antenna Ground Isolation for Media Device Noise
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Solution Overview
Problem
Electronic devices, such as streaming media players, face interference issues due to electromagnetic noise generated by video processing components, which can disrupt wireless communication systems, especially when high-definition video signals are transmitted, causing interference with WIFI frequencies like 2.4 GHz and 5 GHz bands.
Innovation Solution
The implementation of high-dielectric patch antennas with specific geometrical configurations and a ground isolation region on the substrate minimizes noise interference by being directional and physically isolated from noise-generating components, and a smart filter circuit is used to filter out noise frequencies during low-resolution video processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If video and audio signals are transmitted through electrical connectors and cables at high data rates, then video and audio signal transmission quality is improved, but electromagnetic noise radiation increases and interferes with wireless communication systems
Solution Approach 1:
The patent extracts the harmful electromagnetic noise from the system by introducing a ground isolation region that physically separates and electrically isolates the noise-generating video processing components from the wireless communication antenna. This extraction removes the interference source from affecting the wireless communication function.
Solution Approach 2:
The patent segments the device substrate into distinct functional zones: a first region for video processing components that generates electromagnetic noise, and a second region for wireless communication antenna. The ground isolation region acts as a boundary segment that prevents noise propagation between these segments, allowing each to operate independently without interference.
2Volume of moving object
If patch antennas are placed close to video processing components to save space, then device compactness is improved, but noise absorption by antennas increases and wireless communication performance deteriorates
Solution Approach 1:
The ground isolation region serves as an intermediary barrier between the video processing components and the patch antenna. Even though the antenna is placed close to video processing components for compactness, the ground isolation region mediates the electromagnetic field interaction, preventing noise from the video processing components from being absorbed by the antenna.
3Reliability
If ground isolation region is implemented to reduce noise interference, then wireless communication performance is improved, but device complexity increases
Solution Approach 1:
The patent changes the physical layout parameter of the device by allocating specific substrate regions for different functions. The ground isolation region is implemented by modifying the substrate design to include designated areas for video processing components and wireless antenna with appropriate spacing, rather than adding complex active noise cancellation circuits or shields.
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 configuration reduces the absorption and transmission of noise by the antennas, enhancing wireless communication performance by minimizing interference and maintaining video signal integrity, even during high-resolution video processing.
Implementation Method 1
a ground isolation region on the substrate minimizes noise interference by being directional and physically isolated from noise-generating components
Implementation Method 2
The first patch antenna is electrically connected to the wireless communication processor by a first signal line and configured to transmit and receive radio frequency signals
Data Source
AI summary
A device includes a substrate and a video processor on the substrate. A first patch antenna is mounted to the substrate and configured to transmit and receive radio frequency signals in a frequency range. The first patch antenna is closer to a first end of the substrate than a second end of the substrate. A second patch antenna is mounted to the substrate and is configured to transmit and receive radio frequency signals in the frequency range. The second patch antenna is closer to the first end of the substrate than the second end of the substrate. The substrate includes a ground isolation region between at least one of the first patch antenna and the second patch antenna and the video processor. A media connector is on the substrate and electrically connected to the video processor.