Floating Conductor Patch Antenna for Compact Penta-Band 5G Arrays
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Solution Overview
Problem
Designing a compact and thin 5G phased array antenna system that operates over all five frequency bands while maintaining desired performance metrics such as efficiency, polarization isolation, and cross-polarization level is challenging due to limited space and the need for high performance across multiple bands.
Innovation Solution
The proposed antenna system includes a patch antenna element, an energy coupler, a ground conductor, and a floating conductor that localizes fringing fields, allowing for reduced antenna size and improved cross-polarization performance without significant reduction in bandwidth and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna size is reduced to fit limited device volume, then the antenna can be accommodated in compact devices, but the performance (coverage, latency, quality of service) deteriorates
Solution Approach 1:
The patent embeds multiple antenna elements and RF assemblies within a compact package structure, nesting components hierarchically to achieve high integration density while maintaining functional performance in limited space
Solution Approach 2:
The patent transitions from planar 2D antenna layouts to three-dimensional stacked configurations with multiple layers and vertical arrangements, utilizing the Z-dimension to increase antenna capacity without expanding device footprint
2Device complexity
If conventional microstrip antenna techniques are used, then the antenna design is simple, but cross-polarization performance deteriorates over multiple frequency bands
Solution Approach 1:
The patent employs composite right-handed/left-handed metamaterial structures with specific permittivity and permeability properties to achieve superior cross-polarization isolation and multi-band operation beyond conventional microstrip capabilities
Solution Approach 2:
The patent utilizes resonant structures with carefully tuned electrical parameters (length, width, spacing, substrate properties) to optimize cross-polarization performance across five distinct 5G frequency bands through parameter optimization
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 enables the antenna system to provide dual-polarized, penta-band operation with acceptable scan angle performance and improved radiation characteristics, effectively addressing the challenges of compact design and multi-band operation.
Implementation Method 1
a floating conductor that localizes fringing fields, allowing for reduced antenna size and improved cross-polarization performance
Data Source
AI summary
An antenna system includes: a patch antenna element disposed at a first level of the antenna system; an energy coupler configured and coupled to the patch antenna element to transfer energy between the patch antenna element and a front-end circuit; a ground conductor disposed at a second level of the antenna system, the patch antenna element and the ground conductor being disposed a separation distance away from each other and bounding respective sides of a volume defined by a projection, normal to a surface of the patch antenna element, of the patch antenna element to the ground conductor; and a floating conductor that is displaced from the ground conductor and the patch antenna element, the floating conductor comprising a body extending over a portion of the separation distance outside of, and in close proximity to, the volume.