Multi-Antenna Phase Control for Wi-Fi and Bluetooth Interference
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Solution Overview
Problem
Heterogeneous wireless communication protocols, such as Wi-Fi and Bluetooth, experience signal interference due to overlapping frequency bands, leading to decreased data transmission speed and coverage, especially when multiple antennas are used to enhance communication performance.
Innovation Solution
A wireless communication module is designed with specific phase differences between antennas to mitigate interference, featuring a 180-degree phase difference between signals of the same protocol and a 90-degree phase difference between signals of different protocols, implemented using phase control elements and signal processing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas are provided to enhance communication performance, then communication performance is improved, but signal interference between heterogeneous protocols increases
Solution Approach 1:
The patent applies parameter changes by introducing specific phase differences (180 degrees between same-protocol antennas, 90 degrees between different-protocol antennas) to modify the signal characteristics. This phase parameter adjustment transforms the harmful interference into constructive patterns, allowing multiple antennas to operate simultaneously without degrading communication performance
Solution Approach 2:
The patent implements preliminary anti-action by pre-configuring phase control elements that generate opposing phase relationships before interference occurs. The 180-degree phase difference between same-protocol antennas and 90-degree phase difference between different-protocol antennas creates a predetermined interference cancellation pattern that prevents signal degradation
2Object-generated harmful factors
If phase control elements are added to reduce signal interference, then signal interference is reduced, but device complexity increases
Solution Approach 1:
The patent applies local quality by placing phase control elements only at specific locations where interference occurs - between individual antennas and the signal processing device. This localized approach targets the interference problem precisely without requiring system-wide complexity increases, implementing phase control only where heterogenous protocols overlap
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 effectively reduces signal interference between heterogeneous protocols, enhancing transmission speed and coverage by making signals orthogonal to each other in overlapping frequency bands.
Implementation Method 1
the 1-1st signal output from the 1-1st phase control element and the 1-2nd signal output from the 1-2nd phase control element may have a phase difference of 180 degrees, and the second signal output from the second phase control element may have a phase difference of 90 degrees from each of the 1-1st signal and the 1-2nd signal
Data Source
AI summary
An embodiment of the present invention includes a signal processing device; a (1-1)-th antenna which transmits or receives a (1-1)-th signal; a (1-2)-th antenna which transmits or receives a (1-2)-th signal; a second antenna which transmits or receives a second signal; a (1-1)-th phase control element disposed between the (1-1)-th antenna and the signal processing device; a (1-2)-th phase control element disposed between the (1-2)-th antenna and the signal processing device; and a second phase control element disposed between the second antenna and the signal processing device, wherein the (1-1)-th signal output from the (1-1)-th phase control element and the (1-2)-th signal output from the (1-2)-th phase control element have a phase difference of 180 degrees from each other, and the second signal output from the second phase control element has a phase difference of 90 degrees from each of the (1-1)-th signal and the (1-2)-th signal.