Massive MIMO Antenna Filter Unit With Cable-Less RFEM Integration
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Solution Overview
Problem
Conventional antenna filter units are inadequate for multi-pass band and stopband processing, have high power requirements, and are bulky, with cable assemblies requiring significant space and high quality, making them inefficient for 5G communication systems.
Innovation Solution
An antenna filter unit (AFU) is designed with a plurality of cavity filters and a MIMO antenna unit, operatively coupled with a radio frequency front end module (RFEM), featuring a calibration PCB and a cable-less configuration, integrated with a high-speed transceiver board and low noise amplifiers, to enable beam forming and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If conventional antenna filter units are used, then signal transmission is achieved, but the units are bulky and require high power for operation
Solution Approach 1:
The patent replaces conventional cable assemblies with a cable-less integrated design where the antenna filter unit is directly coupled to the radio frequency front end module. This eliminates mechanical cable connections and reduces the overall system volume while maintaining signal transmission functionality.
Solution Approach 2:
The patent integrates the antenna filter unit and radio frequency front end module into a single consolidated structure, eliminating separate cable assemblies and reducing the overall system volume. The integration merges multiple functions into one unit, achieving both size reduction and power efficiency.
2Area of stationary object
If cable assemblies are used for signal transmission, then signal transmission is achieved, but larger space is required and quality requirements are very high
Solution Approach 1:
The patent extracts and eliminates the cable assembly from the system by implementing a cable-less integrated design. The antenna filter unit is directly coupled to the radio frequency front end module through integrated connectors, removing the need for separate cable assemblies and reducing the space required.
Solution Approach 2:
The patent merges the antenna filter unit and radio frequency front end module into a single integrated assembly, eliminating the need for cable assemblies. This integration reduces the overall space required while maintaining signal transmission quality through direct coupling.
3Adaptability or versatility
If conventional antenna filter units are used, then signal transmission is achieved, but multi-pass band and stopband processing capabilities are insufficient
Solution Approach 1:
The patent implements a reconfigurable filter design within the antenna filter unit that can dynamically switch between different pass bands and stop bands. This universal filter structure can process multiple frequency bands and configurations, providing adaptability for various 5G communication requirements without requiring multiple separate filter units.
Solution Approach 2:
The patent employs dynamically reconfigurable filter elements that can change their characteristics based on the required frequency band. The filter unit can be reconfigured to provide different pass bands and stop bands as needed, enabling flexible multi-band processing capability.
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 AFU achieves higher spectral efficiency, reduces power consumption, and increases data rate and capacity by focusing narrow beams, while eliminating the need for cables and reducing latency, with a compact design suitable for massive MIMO systems.
Implementation Method 1
The AFU may include a plurality of cavity filters and a Multiple-Input-Multiple-Output (MIMO) antenna unit
Implementation Method 2
The RFEM may include one or more low noise amplifiers (LNAs) and a plurality of RF switches
Implementation Method 3
the AFU may include a plurality of cavity filters and a Multiple-Input-Multiple-Output (MIMO) antenna unit to enable beam forming to multiple users
Implementation Method 4
enable beam forming to multiple users
Implementation Method 5
The digital signals received from Combined Central and Distributed Unit (CCDU) may be converted into RF signals and processed into analog signals
Data Source
AI summary
The present disclosure relates to an antenna filter unit (AFU) (280) communicatively coupled to a Radio Frequency (RF) Front End Module (RFEM) (250). The AFU (280) comprises a plurality of cavity filters and a Multiple-Input-Multiple-Output (MIMO) antenna unit to enable beam forming to multiple users.