Filter Module Dynamic Frequency Adjustment
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Solution Overview
Problem
As wireless terminals support multiple communication bands, the increasing number of filters required for signal processing complicates processes and increases manufacturing costs and module size, particularly due to the need for precise frequency band management to avoid interference between adjacent frequency bands.
Innovation Solution
A filter module comprising multiple filters, including quadplexer and duplexer configurations, that adjust upper and lower limit frequencies of allocated frequency bands to minimize interference by varying frequency bands by 1-10 MHz, allowing for overlapping bandwidth control and reduced module size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of filters is increased to support multiple communication bands, then the communication band coverage is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
Each filter is designed to control multiple communication bands simultaneously by adjusting its frequency characteristics. The filter can dynamically change its upper and lower limit frequencies to accommodate different band combinations, allowing a single filter to perform the function of multiple fixed-frequency filters. This multi-functionality reduces the total number of filters needed while maintaining comprehensive band coverage.
Solution Approach 2:
The filter frequency characteristics are made dynamic rather than fixed. The upper and lower limit frequencies of each filter can be adjusted in real-time based on which communication bands need to be supported. This dynamic adjustment capability allows the filter module to adapt to different communication scenarios without requiring separate filters for each band, thereby reducing complexity.
2Adaptability or versatility
If the number of filters is increased to support multiple communication bands, then the communication band coverage is improved, but the manufacturing cost increases
Solution Approach 1:
By designing filters that can serve multiple communication bands through dynamic frequency adjustment, the manufacturing cost is reduced because fewer filter components need to be produced, stocked, and assembled. The universal filter design simplifies the supply chain and manufacturing process compared to producing multiple specialized filters for different bands.
Solution Approach 2:
The invention merges the functions of multiple fixed-frequency filters into a single dynamically adjustable filter. This consolidation reduces the total component count, simplifies assembly processes, and lowers manufacturing costs while maintaining the ability to support multiple communication bands through software-controlled frequency adjustment.
3Adaptability or versatility
If the number of filters is increased to support multiple communication bands, then the communication band coverage is improved, but the module size increases
Solution Approach 1:
Each filter in the module is designed to handle multiple communication bands by dynamically adjusting its frequency response. This multi-functionality allows fewer filters to be used, directly reducing the physical volume of the filter module while maintaining comprehensive band coverage capability.
Solution Approach 2:
The invention combines the frequency control functions for multiple bands into fewer filter components. By merging what would traditionally require separate physical filters into unified dynamically-adjustable units, the overall module size is reduced while preserving the ability to support all required communication bands.
4Productivity
If the frequency bands are closely allocated to maximize spectrum utilization, then the spectrum efficiency is improved, but the interference between adjacent bands increases
Solution Approach 1:
The filter frequency characteristics are made dynamically adjustable to precisely control the upper and lower limit frequencies. This dynamic control allows the system to allocate frequency bands closely together when needed while actively managing the transition regions between bands to prevent interference. The filters can be tuned in real-time to optimize both spectrum utilization and interference rejection.
Solution Approach 2:
The invention changes the frequency parameters of the filters dynamically based on which communication bands are active. By adjusting the upper and lower cutoff frequencies of each filter according to the current operational requirements, the system can pack bands closely together while maintaining adequate isolation between them, thus achieving both high spectrum efficiency and low interference.
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 effectively reduces the number of filters needed, decreases module size, and minimizes interference between frequency bands, thereby simplifying signal processing and reducing manufacturing costs while maintaining efficient communication across multiple bands.
Implementation Method 1
A filter module comprising multiple filters, including quadplexer and duplexer configurations, that adjust upper and lower limit frequencies of allocated frequency bands to minimize interference by varying frequency bands by 1-10 MHz
Data Source
AI summary
A filter module includes filters. Each of the filters is configured to control communications bands having overlapping bandwidths each with the other. Each of the communications bands, allocated to any one of the filters, has a different limit frequency from the other.