Multi-Band Filter Node Layout for High-Power Base Stations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing base station products for wireless communication networks are costly to develop and service due to the need for multiple products supporting different frequency bands, and multiband filters are limited to low signal power levels, making them unsuitable for macro and micro base stations without increasing the number of transmitter radio arrangements.
Innovation Solution
A wireless communication network node design that includes an antenna arrangement, radio arrangement, power splitter arrangement, and power amplifier, where each antenna device is connected to multiple output ports of a power splitter arrangement via multi-band filters and phase shifters, allowing for efficient signal handling across multiple frequency bands without increasing the number of transmitter radio arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiband filters are used to reduce the number of base station products, then the number of products is reduced and cost is lowered, but the filters can only handle low signal power levels making them unsuitable for macro and micro base stations
Solution Approach 1:
The high-power signal path is segmented into multiple lower-power paths using power splitters. The power amplifier outputs a high-power signal that is then divided into multiple lower-power signals, each suitable for filtering by multiband filters. This allows the use of multiband filters in high-power applications by ensuring the power level at each filter input is within their operational range.
Solution Approach 2:
Power splitters are introduced as intermediary components between the power amplifier and multiband filters. These intermediaries take the high-power signal from the amplifier and transform it into multiple lower-power signals that can be safely processed by the filters, enabling the filters to operate within their power handling capabilities while still supporting high-power transmission systems.
2Power
If the number of transmitter radio arrangements is increased to reduce power per filter, then multiband filters can be used, but the cost increases due to larger number of transmitter radio arrangements
Solution Approach 1:
Multiple filter paths that would traditionally require separate transmitter radio arrangements are merged into a single shared power amplifier. The power amplifier serves multiple frequency bands simultaneously, and its output is divided among multiple multiband filters, each handling different frequency bands. This consolidation reduces the number of transmitter radio arrangements while maintaining the ability to transmit multiple frequency bands.
Solution Approach 2:
A single power amplifier is designed to be universal and support multiple frequency bands. Instead of having separate power amplifiers for each frequency band, one power amplifier is configured to amplify signals across multiple bands, which are then routed through appropriate multiband filters. This multi-functional approach reduces hardware complexity while maintaining broad frequency support.
Data Source
AI summary
The present disclosure relates to a wireless communication network node comprising at least one antenna arrangement, at least one radio arrangement, at least one power splitter arrangement and at least one power amplifier. Each antenna arrangement comprises at least one antenna device, and each power splitter arrangement comprises an input port and at least two output ports. Each of said at least one power amplifier is connected to a corresponding input port, and, for each power splitter arrangement, at least two output ports are connected to at least one corresponding antenna device via a corresponding multi-band filter for each of said output ports. Each multi-band filter is arranged for at least two frequency bands.