Hermetically Sealed RF Front End Module for Integrated 5G Antenna-Resonator
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Solution Overview
Problem
Existing radio-frequency front end modules struggle to effectively operate across the frequency ranges of 5G New Radio (5G NR), particularly in FR1 and FR2, due to the need for separate integration of antennas and resonators, which complicates design and increases size, while also being susceptible to environmental factors.
Innovation Solution
A radio-frequency front end module design that integrates resonators, such as bulk acoustic wave resonators, with antennas on a hermetically sealed substrate structure, utilizing high permittivity and resistivity materials to reduce size and protect components, allowing operation across both FR1 and FR2 frequency ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antennas and resonators are integrated on the same substrate, then device size is reduced and design is simplified, but the device becomes more susceptible to environmental factors affecting performance
Solution Approach 1:
A hermetic seal encapsulates the substrate containing both the antenna and resonator, creating a protective barrier that isolates the integrated components from environmental factors such as moisture and oxygen, thereby preventing performance degradation while maintaining the compact integrated structure
Solution Approach 2:
The hermetic seal creates an inert enclosed environment around the integrated antenna and resonator components, protecting them from harmful environmental interactions that would otherwise affect the performance of the integrated device
2Object-affected harmful factors
If separate integration of antennas and resonators is used, then environmental protection is improved, but device complexity and size increase
Solution Approach 1:
The antenna and resonator are merged onto a single substrate and jointly encapsulated by a hermetic seal, simplifying the overall structure and reducing the number of separate components and assembly steps while maintaining environmental protection
3Volume of moving object
If high permittivity material is used for the substrate, then antenna size is reduced, but thermal stress increases
Solution Approach 1:
The substrate material parameters are optimized by selecting high permittivity material that also possesses appropriate thermal properties, allowing the antenna to be miniized while managing thermal stress through material parameter selection
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 integrated design enables compact, efficient operation across 5G NR frequency ranges, protecting components from environmental effects and minimizing thermal stress, while supporting both high and low frequency operations.
Implementation Method 1
a hermetically sealed substrate structure, utilizing high permittivity and resistivity materials to reduce size and protect components
Implementation Method 2
protecting components from environmental effects and minimizing thermal stress
Implementation Method 3
utilizing high permittivity and resistivity materials to reduce size
Implementation Method 4
one or more resonators disposed on a first surface of the first substrate, the first surface of the first substrate facing the second substrate, the one or more resonators including one or more bulk acoustic wave resonators
Data Source
AI summary
A radio-frequency front end module comprises a first substrate, a second substrate arranged opposing the first substrate, one or more resonators disposed on a surface of the first substrate, the first surface of the first substrate facing the second substrate, and one or more antennas that are each supported by the first substrate and the second substrate. A beamforming antenna is also provided, as is a wireless mobile device.