Split Antenna Filter Layout Using Low-Power Filters for 5G Arrays
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Solution Overview
Problem
In 5G wireless communication systems, the increasing number of antenna elements leads to a higher number of RF components, such as filters, which results in larger and heavier equipment, making it challenging to achieve miniaturization and cost efficiency while maintaining performance.
Innovation Solution
The implementation of a low power filter structure with a small, elastic, or ceramic filter, such as a SAW or BAW filter, arranged between a splitter and antenna elements, allowing for a smaller size and increased mass productivity by distributing power across multiple filters, rather than relying on a single high power filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the number of antenna elements is increased to improve data rate and communication performance, then the data rate and system performance are improved, but the number of RF components (filters) increases, resulting in larger and heavier equipment
Solution Approach 1:
The patent segments the single high-power filter function into multiple low-power filters, each handling a portion of the total power. This allows the system to support multiple antenna elements while using smaller, lighter filter components that can be mass-produced, thereby reducing overall equipment weight while maintaining high data rate capability.
2Reliability
If the number of antenna elements is increased to improve communication performance, then the communication performance is improved, but the size of the equipment increases due to more RF components
Solution Approach 1:
The patent divides the filtering function across multiple low-power filters instead of using a single high-power filter. This segmentation enables compact arrangement of filter components, reducing the overall equipment footprint while supporting multiple antenna elements for improved communication performance.
Solution Approach 2:
The patent changes the power parameter of the filters from high power to low power, enabling the use of smaller ceramic or elastic filters that occupy less space. This parameter change allows the equipment to maintain communication performance while reducing overall size.
3Power
If a high power filter is used to handle the full power signal, then the power handling capability is sufficient, but the filter size is large and mass productivity is reduced
Solution Approach 1:
The patent segments the total power handling requirement across multiple low-power filters, each processing a fraction of the total power. This enables the use of standard, mass-producible low-power filter components while collectively achieving the required power handling capability for the communication system.
Solution Approach 2:
The patent combines multiple low-power filters in parallel to achieve the equivalent power handling capability of a single high-power filter. This merging approach allows the use of smaller, mass-producible components that can be manufactured with higher yield and lower cost.
4Power
If a metal cavity filter is used to ensure adequate power handling, then the power handling is sufficient, but the filter is large and heavy
Solution Approach 1:
The patent changes the material and power parameter of the filters from metal cavity (high power) to ceramic or elastic materials (low power). This parameter change enables the use of significantly lighter filter components while distributing the power handling across multiple units, thereby reducing overall weight while maintaining adequate power handling capability.
Data Source
AI summary
The present disclosure relates to an electronic device for radiating an output signal in a wireless communication system. In one embodiment, the electronic device includes: a power amplifier configure to receive an input signal; a splitter connected to the power amplifier, which a plurality of branches; a plurality of filters connected to the plurality of branches of the splitter; and a plurality of antenna elements connected to the plurality of filters. The plurality of antenna elements radiates the output signal that is a portion of the input signal received by the power amplifier.