Multi-Polarization Antenna Assembly for Signal Stability
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Solution Overview
Problem
Wireless communications face limitations in audio/video/data transport and internet connectivity due to topographical and object obstructions, leading to signal cancellation and instability, particularly in obstructed and non-line-of-sight deployments, where existing antennas fail to effectively capture and utilize diverse polarizations and spatial signals.
Innovation Solution
A novel three-dimensionally constructed antenna with built-in spatial and polarization diversity, featuring radiative elements positioned at acute angles relative to an imaginary plane and a conductive ground reference, allowing for the capture of preferred signal paths and diverse polarizations, thereby stabilizing signal and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional single-polarization antennas are used, then the antenna structure is simple, but signal stability deteriorates in obstructed environments due to multipath cancellation
Solution Approach 1:
The antenna is divided into multiple radiative elements (first radiative element, second radiative element, third radiative element) each oriented at different angles to capture signals with different polarizations. This segmentation allows the antenna to receive multipath signals that have undergone different polarization transformations, preventing complete signal cancellation and improving reliability in obstructed environments.
Solution Approach 2:
The patent transitions from a single-polarization (one-dimensional) antenna to a multi-polarization (three-dimensional) antenna system. The radiative elements are arranged in three-dimensional space with different orientations (acute angles, obtuse angles, perpendicular orientations) to capture signals from multiple polarization dimensions, thereby improving signal stability when signals reflect off surfaces and change polarization.
2Reliability
If antennas are designed for specific elevation angles, then gain is improved at those angles, but performance deteriorates at other elevation angles
Solution Approach 1:
The antenna assembly is designed to perform multiple functions simultaneously: it provides gain at multiple elevation angles (not just one specific angle), captures signals with different polarizations, and operates effectively in both line-of-sight and obstructed environments. The multi-element configuration with diverse orientations enables the antenna to adapt to varying signal paths and reflection conditions.
Solution Approach 2:
The patent changes the geometric parameters of the radiative elements (orientation angles, spatial positions) to optimize performance across multiple elevation angles. By configuring elements at acute angles, obtuse angles, and perpendicular orientations relative to reference planes, the antenna achieves broad elevation angle coverage while maintaining gain performance across different signal paths.
3Reliability
If higher frequency radio waves are used, then penetration and reflection characteristics are improved, but signal loss increases due to multipath cancellation from topographical obstructions
Solution Approach 1:
The patent converts the harmful effect of multipath reflection (which causes signal cancellation in conventional antennas) into a beneficial effect. By incorporating multiple radiative elements with different orientations, the antenna can now capture reflected signals that have changed polarization, transforming what was previously a source of signal loss into an additional signal path that improves reliability in obstructed environments.
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
The antenna achieves enhanced signal stability and throughput by capturing and utilizing diverse polarizations and spatial signals, minimizing signal loss and providing broad signal patterning, even in obstructed environments.
Implementation Method 1
an antenna assembly for receiving and transmitting radio frequency signals in a range around a characteristic wavelength
Implementation Method 2
An antenna assembly is mounted to the conductive base member as to provide significant capacitive coupling between at least one radiative element associated with the antenna assembly and the conductive base member
Data Source
AI summary
An antenna assembly is provided for receiving and transmitting radio frequency signals in a range around a characteristic wavelength. A first radiative element, has a first end and a second end and is made from an electrically conductive material. The first end of the first radiative element is electrically connected to an antenna feed at an apex point and at least a portion of the first radiative element is disposed outwardly away from the apex point at an acute angle relative to, and on a first side of, an imaginary plane intersecting the apex point. A second radiative element has a first end and a second end and is comprised of an electrically conductive material. The first end of the first radiative element is electrically connected to the antenna feed and the first radiative element at the apex point. At least a portion of the second radiative element extends in a direction substantially perpendicular to the imaginary plane. The antenna assembly further includes an electrically conductive ground reference.