Dual Radiating Elements for Omni-Directional Wireless Antennas
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Solution Overview
Problem
Existing wireless communication device antennas often produce directional radiation patterns, limiting coverage to half the three-dimensional space, requiring devices to be oriented towards the base station for adequate operation.
Innovation Solution
The implementation of dual radiating elements with orthogonal polarizations and a power divider in a wireless electronic device, where one radiating element is configured to resonate at a specific frequency and the other at a different frequency, ensuring broad and omni-directional radiation patterns by overlapping conductive layers and striplines on a printed circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single radiating element is used, then the antenna structure is simple, but the radiation pattern is directional and coverage is limited to half the three-dimensional space
Solution Approach 1:
The antenna is divided into two separate radiating elements (first and second radiating elements) positioned on opposite sides of the substrate. Each element is responsible for radiating in a specific directional hemisphere, together providing full three-dimensional coverage. This segmentation resolves the contradiction by sacrificing some structural simplicity to achieve comprehensive radiation coverage.
Solution Approach 2:
The patent transitions from a single-plane radiating element to a three-dimensional configuration with elements on both sides of the substrate. The first radiating element radiates primarily in one directional hemisphere while the second radiating element radiates in the opposite hemisphere, utilizing the third dimension (z-axis) to achieve omnidirectional coverage and resolve the limitation of half-space coverage.
2Adaptability or versatility
If dual radiating elements with orthogonal polarizations are used, then broad and omni-directional radiation patterns are achieved, but the antenna structure becomes more complex
Solution Approach 1:
Two radiating elements with orthogonal polarizations are merged into a single integrated antenna system on one substrate. The first radiating element and second radiating element are coupled to the same ground structure and share the same physical platform, achieving omnidirectional radiation while maintaining a unified compact structure rather than separate antenna assemblies.
Solution Approach 2:
The antenna system is designed to perform multiple radiation functions simultaneously through the two radiating elements with orthogonal polarizations. One element handles radiation in one directional hemisphere while the other handles the opposite hemisphere, creating a universal antenna system that provides comprehensive three-dimensional coverage for various communication orientations.
3Adaptability or versatility
If the first and second radiating elements are configured with orthogonal polarizations, then uniform radiation coverage is achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The first and second radiating elements are designed with different local geometries optimized for their respective radiation hemispheres. The first radiating element has a configuration optimized for its directional hemisphere while the second radiating element has a corresponding configuration for its opposite hemisphere. This local optimization achieves uniform overall radiation coverage while allowing each element to be manufactured with standard precision tolerances.
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 enhances antenna performance by providing uniform radiation coverage around the device, improving communication efficiency and reducing directional distortion, enabling effective communication from both the front and back sides of the device.
Implementation Method 1
The wireless electronic device may be configured to resonate at a resonant frequency corresponding to the first radiating element and/or the second radiating element when excited by a signal transmitted and/or received though the stripline
Data Source
AI summary
A wireless electronic device includes first and second conductive layers arranged in a face-to-face relationship. The first and second conductive layers are separated from one another by a first dielectric layer. The wireless electronic device includes a first radiating element and a second radiating element. The first conductive layer includes a slot. The second conductive layer includes a stripline. The second radiating element at least partially overlaps the slot. The wireless electronic device is configured to resonate at a resonant frequency corresponding to the first radiating element and/or the second radiating element when excited by a signal transmitted and/or received though the stripline.