Mobile Radio Antenna Dielectric Waveguide Emission Shift
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Solution Overview
Problem
Mobile radio antennas lack improved properties for high-density antenna arrangements, particularly in shifting the emission plane and phase center, which limits their application in mobile radio base stations.
Innovation Solution
A mobile radio antenna design featuring a dipole radiator with a dielectric body where the height of the dielectric body is at least 30% of its maximum thickness, acting as a waveguide to shift the emission plane and phase center, allowing for enhanced radiation characteristics and increased application areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dielectric body is arranged on a dipole radiator to shift the emission plane, then the radiation characteristics are improved, but the antenna structure becomes more complex
Solution Approach 1:
The patent applies parameter changes by optimizing the height-to-thickness ratio of the dielectric body to be at least 30%. This specific geometric parameter change enables the dielectric body to effectively shift the emission plane and phase center while maintaining manageable structural complexity. The parameter optimization balances the competing requirements of improved radiation characteristics and acceptable structural complexity.
2Reliability
If the height of the dielectric body is increased to shift the emission plane, then the radiation aperture is improved, but the device dimensions increase
Solution Approach 1:
The patent resolves this contradiction by establishing a specific parameter relationship: the height H of the dielectric body should be at least 30% of its maximum thickness D. This parameter optimization allows the emission plane to be shifted effectively (improving radiation aperture) while controlling the overall device dimensions through the proportional relationship between height and thickness rather than absolute dimensions.
3Productivity
If multiple antennas are arranged in high-density configuration, then the antenna arrangement efficiency is improved, but the mutual interference between antennas increases
Solution Approach 1:
The dielectric body acts as an intermediary element between the dipole radiator and the surrounding environment in high-density antenna arrangements. By shifting the emission plane and phase center through the dielectric body, the radiation patterns of adjacent antennas are better controlled, reducing mutual interference while maintaining high arrangement density. The dielectric body mediates the electromagnetic field distribution to enable closer spacing.
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 design effectively shifts the emission plane and phase center, improving the antenna's radiation aperture and directivity, enabling broader application in mobile radio antenna arrangements with multiple antennas.
Implementation Method 1
the dielectric body acts as a waveguide for the mobile radio signals emitted by the dipole radiator and thereby shifts the emission plane of the dipole radiator
Implementation Method 2
a dielectric body arranged on the dipole radiator... the dielectric body acts as a waveguide for the mobile radio signals emitted by the dipole radiator and thereby shifts the emission plane of the dipole radiator
Data Source
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AI summary
The present invention relates to a mobile communication antenna, in particular for a mobile communication base station, with at least one dipole radiator and with a dielectric body arranged on the dipole radiator, characterized in that the height H of the dielectric body in the main radiation direction is at least 30% of the maximum thickness D of the dielectric body in a cross-section perpendicular to the main radiation direction.