Multi-Polarization Antenna Phase Delay Signal Diversity
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Solution Overview
Problem
MIMO systems with limited signal diversity due to line-of-sight (LOS) transmission in environments with few reflective surfaces, leading to reduced signal performance, as existing antenna systems often rely on only two polarizations and lack effective phase delay mechanisms to optimize signal strength and diversity.
Innovation Solution
A multi-polarization antenna system incorporating a phase delay module that receives signals from horizontal, vertical, and elliptical polarization elements, determining signal strengths and combining them with phase delays to enhance signal strength and diversity, particularly when the signal strength of the horizontal polarization is higher than the elliptical polarization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only two polarizations (horizontal and vertical) are used in the antenna system, then the device complexity is reduced, but the signal diversity is limited leading to reduced signal performance
Solution Approach 1:
The patent introduces a third polarization dimension (elliptical polarization at 45 degrees) to the traditional two-polarization system, adding spatial diversity in a new dimension. This allows the antenna system to receive signals from multiple polarization states simultaneously, improving signal diversity without significantly increasing device complexity
Solution Approach 2:
The patent changes the polarization parameter by incorporating elliptical polarization elements with specific orientation angles (45 degrees) and phase delay mechanisms. This parameter change enables the system to differentiate between multiple data streams more effectively, enhancing signal diversity and performance
2Device complexity
If phase delay mechanisms are not implemented, then the device complexity is reduced, but the ability to optimize signal strength and differentiate data streams is limited
Solution Approach 1:
The patent introduces phase delay mechanisms as intermediary components between the antenna elements and the signal processing unit. These mechanisms selectively apply phase delays to signals from different polarization elements, enabling the system to differentiate between data streams and optimize signal strength without requiring complex processing throughout the entire system
Solution Approach 2:
The patent applies phase delays in advance to signals from different polarization elements before they are combined and processed further. This preliminary action of phase adjustment enables subsequent signal processing to more effectively differentiate data streams and optimize performance, reducing the complexity of later processing stages
3Reliability
If multiple polarization elements are added to enhance signal diversity, then the signal quality is improved, but the device complexity increases
Solution Approach 1:
The patent adds elliptical polarization elements oriented at 45 degrees to the traditional horizontal and vertical polarization configuration. This dimensional addition to the polarization space provides enhanced signal diversity and quality while maintaining a relatively compact antenna assembly structure
Solution Approach 2:
The patent combines multiple polarization elements (horizontal, vertical, and elliptical) into a single integrated antenna assembly. This merging approach allows the system to benefit from enhanced signal diversity through multiple polarizations while consolidating the structure to minimize the increase in device complexity
Data Source
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AI summary
An apparatus includes a phase delay module that is configured to receive a set of signals from an antenna assembly having a horizontal polarization element and an elliptical polarization element. The horizontal polarization element and the elliptical polarization element are collectively configured to receive the set of signals over a coverage area. The phase delay module is configured to determine (1) a signal strength of a first signal from the set of signals received via the horizontal polarization element and (2) a signal strength of a second signal from the set of signals received via the elliptical polarization element. The phase delay module is configured to send a combined signal including (1) the first signal and (2) the second signal having a phase delay if the signal strength of the first signal is higher than the signal strength of the second signal.