Acoustic Wave Filter Bank Die With Filter Skirt Gap Spanning

Solution Overview

Problem

Current filter bank modules for Wi-Fi spectrum support are large in size, costly, and have poor performance due to the complexity of components like filters, switches, and diplexers needed to support 6 GHz, 2.4 GHz, and 5 GHz bands.

Innovation Solution

A filter bank module integrating acoustic wave filters with a unique filter skirt design spanning at least a 100 MHz gap between passbands, along with integrated switches, low-noise amplifiers, power amplifiers, and passive filters, which reduces module size, cost, and insertion loss, and eliminates the need for external switches or diplexers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If complex banks of filters, switches, and diplexers are used to support multiple Wi-Fi bands, then spectrum compatibility is improved, but module size increases

Engineering Contradiction:

Improvespectrum compatibilityVSAvoidmodule size

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent combines multiple filter functions into a single integrated filter bank module that supports 2.4 GHz, 5 GHz, and 6 GHz Wi-Fi bands simultaneously. The module integrates multiple acoustic wave filters, switches, and diplexers into one compact unit, eliminating the need for separate external components while maintaining support for all required spectrum bands.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The filter bank module is designed as a universal component that can handle multiple Wi-Fi frequency bands (2.4 GHz, 5 GHz, and 6 GHz) through a single device. The integrated design provides multi-functional capability including filtering, switching, and diplexing operations within one module, replacing what would traditionally require multiple separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If complex banks of filters, switches, and diplexers are used to support multiple Wi-Fi bands, then spectrum compatibility is improved, but manufacturing cost increases

Engineering Contradiction:

Improvespectrum compatibilityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent combines multiple filter functions into a single integrated filter bank module that supports 2.4 GHz, 5 GHz, and 6 GHz Wi-Fi bands simultaneously. The module integrates multiple acoustic wave filters, switches, and diplexers into one compact unit, eliminating the need for separate external components while maintaining support for all required spectrum bands.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If complex banks of filters, switches, and diplexers are used to support multiple Wi-Fi bands, then spectrum compatibility is improved, but performance deteriorates

Engineering Contradiction:

Improvespectrum compatibilityVSAvoidperformance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines multiple filter functions into a single integrated filter bank module that supports 2.4 GHz, 5 GHz, and 6 GHz Wi-Fi bands simultaneously. The module integrates multiple acoustic wave filters, switches, and diplexers into one compact unit, eliminating the need for separate external components while maintaining support for all required spectrum bands.

Inventive Principle:

Principle #5Merging (Combining)

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 achieves a substantial reduction in module size and cost while enhancing performance by integrating multiple filter passbands on a single acoustic wave die, optimizing filter skirts for reduced insertion loss and flexibility across multiple bands.

Implementation Method 1

a first acoustic wave (AW) filter having a first antenna terminal coupled to the antenna port terminal and a first filter terminal

Methodology Applied

Scientific EffectAcoustic wave: Surface Acoustic Wave

Data Source

PatentUS12149230B2Dynamic band steering filter bank die having filter skirt management

Publication Date: 2024.11.19 QORVO US INC

AI summary

Disclosed is a filter bank die that includes a first acoustic wave (AW) filter having a first antenna terminal coupled to the antenna port terminal and a first filter terminal, wherein the first AW filter is configured to have a filter skirt with a slope that spans at least a 100 MHz gap between adjacent passbands, 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.