Multiband Antenna Subsection Segmentation for Signal Decoupling
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Solution Overview
Problem
Current multiband antenna designs face challenges in efficiently decoupling telecommunications signals across different frequency bands and polarizations, leading to increased filter losses and passive intermodulation, which affects the performance and cost-effectiveness of base station antenna systems.
Innovation Solution
A multiband antenna device with a mechanical support divided into subsections, featuring dual or triple band receiver and transmitter means with orthogonal polarizations and spatial separation, utilizing dipoles or patch antennas, and feeding lines on a PCB or air microstrip lines to achieve improved decoupling and compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional multiband antenna designs are used, then multiple frequency bands can be supported, but signal decoupling between bands and polarizations is insufficient leading to increased filter losses and passive intermodulation
Solution Approach 1:
The antenna device is divided into four distinct subsections (first, second, third, and fourth subsections) on the PCB support, with each subsection containing specific receiver and transmitter means with defined polarizations. This segmentation spatially separates signals of different bands and polarizations, improving decoupling and reducing filter losses and passive intermodulation.
2Adaptability or versatility
If more receiver and transmitter means are added to support multiple bands, then multiband capability is improved, but device complexity increases
Solution Approach 1:
Multiple receiver means and transmitter means are integrated onto a single PCB support structure, sharing common mechanical support and spatial arrangement. The four subsections are combined on one PCB, allowing multiband operation while maintaining a unified, manageable structure rather than separate antenna elements for each band.
Solution Approach 2:
Each subsection is designed to handle multiple frequency bands and polarizations simultaneously. For example, the first subsection contains receiver means for first and second bands with first polarization, while the third subsection contains transmitter means for the same bands with second polarization. This multi-functionality reduces the need for separate dedicated antennas for each band.
3Reliability
If receiver and transmitter means with different polarizations are spatially separated, then signal decoupling is improved, but antenna device area increases
Solution Approach 1:
The antenna device utilizes the two-dimensional plane of the PCB support to arrange four subsections in a compact configuration. By distributing receiver and transmitter means across different subsections with defined polarizations and spatial relationships, the design achieves effective signal isolation without requiring excessive physical area, as all elements are integrated on a single PCB plane.
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 solution provides enhanced signal decoupling and isolation between frequency bands, reducing filter losses and passive intermodulation, thereby improving the performance and reducing the operational costs of base station antenna systems while enabling MIMO capabilities.
Implementation Method 1
a first receiver means with antenna for receiving telecommunications signals in at least a first receiver frequency band and a second receiver frequency band, a second receiver means with antenna for receiving telecommunications signals in a third receiver frequency band and a fourth receiver frequency band
Implementation Method 2
The first receiver means are arranged in the first subsection and are arranged to receive telecommunications signals in a first polarisation, the second receiver means are arranged in the second support subsection to receive telecommunications signals in said second polarisation
Data Source
AI summary
An antenna device comprises a PCB support divided into at least first, second, third and fourth subsections, a plurality of receiver means including at least first receiver means for receiving telecommunications signals at least a first receiver frequency band and a second receiver frequency band, a second receiver means for receiving telecommunications signals with in a third receiver frequency band and a fourth receiver frequency band, and third receiver means for receiving telecommunications signals in a fifth receiver frequency band, a plurality of transmitter means including at least first transmitter means for transmitting telecommunications signals in at least a first transmitter frequency band and a second transmitter frequency band, second transmitter means for transmitting telecommunications signals in a third transmitter frequency band and a fourth transmitter band, and at least a third transmitter means for transmitting telecommunications signals in a fifth transmitter frequency band. The first receiver means are arranged in the first subsection and are arranged to receive telecommunications signals in a first polarization, the second receiver means are arranged in the second support subsection to receive telecommunications signals in said second polarization, the first transmitter means are arranged in the third support, subsection to transmit telecommunications signals in a second polarization, and the second transmitter means are arranged in the fourth subsection to transmit telecommunications signals in said first polarization.