Cloaked Antenna Radiator Layout for Dense Multiband Placement
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Solution Overview
Problem
Integrating C-Band radiators into existing LTE and 5G cellular networks poses challenges as energy radiated by these radiators causes resonances in lower band radiators, leading to performance degradation, and conventional solutions like increasing antenna size are impractical due to space constraints and wind loading issues.
Innovation Solution
A compact antenna design featuring low band radiators with dipole arms having periodic inductive choke segments and broken peripheral current paths, and low band radiators with specific conductive patterns to prevent re-radiation in mid and C-Band frequencies, allowing close proximity placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the area of the antenna array face is increased to accommodate additional radiators and avoid interference, then the interference between radiators of different bands is reduced, but the wind loading and space constraints are exacerbated
Solution Approach 1:
The patent applies preliminary anti-action by incorporating conductive patterns on the radiators before deployment to preemptively block re-radiation paths. These conductive patterns create artificial current paths that prevent harmful re-radiation from occurring in the first place, allowing close spacing without interference issues that would normally require larger separation distances
Solution Approach 2:
The conductive patterns act as intermediaries between the radiators of different frequency bands. They mediate the electromagnetic interaction by providing controlled current paths that prevent the harmful coupling between C-Band and low band radiators, enabling dense packing while maintaining performance
2Adaptability or versatility
If additional radiators are added to accommodate C-Band and CBRS frequencies, then the multiband capability is improved, but the re-radiation interference in lower bands increases
Solution Approach 1:
The patent applies local quality by implementing different conductive pattern configurations on specific radiators based on their operational bands and spatial relationships. Low band radiators near C-Band radiators have conductive patterns optimized to block C-Band re-radiation, while maintaining their low band radiation characteristics, thus enabling multiband operation without mutual interference
3Reliability
If the antenna size is increased to accommodate more radiators, then the radiator spacing is increased to avoid resonance, but the wind loading and manufacturing complexity increase
Solution Approach 1:
The patent applies segmentation by dividing the antenna array into modular units with standardized conductive pattern configurations. This segmentation allows complex multiband interference management to be broken down into repeatable modular solutions, reducing overall manufacturing complexity while maintaining performance stability across the array
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 design effectively prevents re-radiation interference, enabling dense packing of multiple band radiators without increasing antenna size, thus maintaining performance and reducing manufacturing complexity.
Implementation Method 1
energy radiated by the C-Band radiators may cause resonances in the lower band radiators
Implementation Method 2
each of the plurality of dipole arms includes a periodic pattern of inductive choke segments
Data Source
AI summary
An antenna that enables dense packing of radiators includes a plurality of first radiators configured to radiate in a first frequency band and a plurality of second radiators configured to radiate in a second frequency band, the second frequency band having higher frequencies than the first frequency band. each of the plurality of first radiators includes a plurality of dipole arms. Each of the plurality of dipole arms includes a periodic pattern of inductive choke segments, and each of the dipole arms has a broken peripheral current path.