Integrated AW Filter Bank Die for Multi-Band Wi-Fi Diplexing
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Solution Overview
Problem
Existing filter bank modules are large in size, costly, and have poor performance due to the use of complex banks of filters, switches, and diplexers, which are not optimized for supporting the newly released Wi-Fi spectrum at 6 GHz while maintaining performance for existing bands at 2.4 GHz and 5 GHz.
Innovation Solution
Integration of acoustic wave filters with integrated switches and low-noise amplifiers within a filter bank die, eliminating the need for external switches and diplexers, and optimizing filter passband allocation for reduced size, cost, and improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex banks of filters, switches, and diplexers are used to support multiple Wi-Fi bands, then frequency selectivity is improved, but device size increases
Solution Approach 1:
Multiple acoustic wave filters are integrated onto a single die, combining what were previously separate discrete components into one unified device. This integration maintains the frequency selectivity of multiple filters while dramatically reducing the overall device size and eliminating the need for external switches and diplexers.
Solution Approach 2:
The integrated filter bank die performs multiple functions simultaneously - it provides frequency selection for multiple Wi-Fi bands (2.4 GHz, 5 GHz, and 6 GHz) while also incorporating switching and diplexing capabilities within the same device, eliminating the need for separate components for each function.
2Measurement precision
If complex banks of filters, switches, and diplexers are used to support multiple Wi-Fi bands, then frequency selectivity is improved, but manufacturing cost increases
Solution Approach 1:
By integrating multiple filters, switches, and diplexers onto a single die, the patent reduces the total component count and assembly complexity. This consolidation lowers manufacturing costs through reduced part numbers, simplified assembly processes, and decreased testing requirements compared to assembling multiple discrete components.
Solution Approach 2:
The patent uses acoustic wave filter technology to create multiple frequency-selective paths on a single die, effectively copying the filtering function across different frequency bands within the same integrated structure, thereby reducing the need for multiple unique discrete filter components.
3Measurement precision
If complex banks of filters, switches, and diplexers are used to support multiple Wi-Fi bands, then frequency selectivity is improved, but performance deteriorates
Solution Approach 1:
Integrating the filter bank onto a single die reduces the number of interconnections and external components, thereby minimizing signal loss and improving overall system performance. The integrated architecture eliminates performance degradation associated with multiple discrete component interfaces while maintaining excellent frequency selectivity.
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 results in a compact, cost-effective filter bank module with reduced insertion loss and optimized filter skirts, enabling efficient signal duplexing and simultaneous operation across multiple Wi-Fi bands.
Implementation Method 1
a first acoustic wave (AW) filter having a first antenna terminal and a first filter terminal, and a second AW filter having a second filter terminal
Data Source
AI summary
Disclosed is a filter bank die having a first acoustic wave (AW) filter having a first antenna terminal and a first filter terminal, and a second AW filter having a second filter terminal, and a second antenna terminal coupled to the first antenna terminal to effectively diplex signals that pass through the first AW filter and the second AW filter.