Planar Antenna Array Reflector Beam Extension
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Solution Overview
Problem
Planar antenna arrays used in higher frequency wireless communication systems provide limited directional coverage, making relative positioning of devices a concern for maintaining communication links, as standard coil antennas are insufficient for millimeter wave protocols above 60 GHz.
Innovation Solution
Incorporating a reflector or refractive lens element above a planar antenna array to redirect beam direction and extend the antenna coverage pattern horizontally, providing a more omnidirectional coverage area from −30° to +70°, thereby enhancing communication link stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a planar antenna array is used for millimeter wave communication above 60 GHz, then communication capability at higher frequencies is achieved, but directional coverage is limited and device positioning becomes constrained
Solution Approach 1:
The patent introduces a reflective surface positioned below the planar antenna array to create a three-dimensional radiation pattern. This reflective surface reflects signals upward and outward, adding a vertical dimension to the traditionally horizontal planar array coverage. The combination of direct radiation from the planar array and reflected radiation creates an extended coverage pattern that maintains millimeter wave communication capability while significantly improving angular coverage from −30° to +70°, thereby resolving the contradiction between high-frequency performance and positioning flexibility
2Reliability
If a planar antenna array is used to provide directional beamforming at higher frequencies, then communication link stability is improved, but the coverage area becomes more restrictive
Solution Approach 1:
The patent effectively segments the radiation function by separating the planar antenna array (which provides stable beamforming) from the reflective surface (which expands coverage). The planar array maintains focused directional beams for reliable communication, while the reflective surface divides and redirects these beams into multiple directions, creating an expanded coverage pattern without compromising the stability of individual communication links
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 use of reflectors or refractive lenses extends the antenna coverage pattern significantly in the horizontal direction, allowing for more flexible device positioning and improved communication capabilities in higher frequency wireless systems.
Implementation Method 1
Incorporating a reflector or refractive lens element above a planar antenna array to redirect beam direction
Implementation Method 2
Incorporating a reflector or refractive lens element above a planar antenna array to redirect beam direction
Data Source
AI summary
A technique to extend antenna coverage pattern of a planar antenna array. In one instance a reflector is disposed above the planar antenna array and in another instance a lens element is disposed above the planar antenna array. The reflection or refraction of RF signals allows antenna coverage pattern to be extended in a horizontal direction parallel to the planar surface of the antenna array and beyond a coverage pattern that is typically not available, without such reflection or refraction of the RF signal.