Package on Antenna Package Separation for Wireless Module Optimization
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Solution Overview
Problem
The design of semiconductor packages is limited by the need to integrate antennas, leading to constraints on materials, layer thickness, and manufacturing processes, which can result in suboptimal performance and increased costs due to the forced use of common materials and processes for both semiconductor and antenna packages.
Innovation Solution
Separating the semiconductor package and antenna package allows for the use of materials and processes optimized for each component, with the semiconductor package using low-k dielectric for signal routing and the antenna package using higher-k materials for improved radiation efficiency, enabling a smaller form factor and better performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If semiconductor package and antenna package are integrated together, then device complexity is reduced, but design latitude and performance optimization are limited due to forced use of common materials and processes
Solution Approach 1:
The patent divides the integrated package into two separate packages: a semiconductor package containing electronic components and a antenna package containing radiating elements. This segmentation allows each package to be designed, manufactured, and optimized independently, resolving the contradiction by enabling design latitude without increasing overall device complexity.
Solution Approach 2:
The antenna elements are extracted from the semiconductor package structure and placed in a separate antenna package. This extraction allows the semiconductor package to be optimized for electronic component integration while the antenna package can be independently optimized for radiation efficiency using different materials and processes.
2Ease of manufacture
If common materials and processes are used for both semiconductor and antenna packages, then manufacturing complexity is reduced, but manufacturing yield and performance are decreased due to inability to optimize for specific requirements
Solution Approach 1:
By segmenting the manufacturing process into separate semiconductor package fabrication and antenna package fabrication, each process can be optimized for its specific requirements. The semiconductor package uses low-k dielectric materials and standard semiconductor processes, while the antenna package uses higher-k materials and antenna-specific manufacturing processes, thereby improving manufacturing yield.
Solution Approach 2:
Different materials and processes are applied to different parts of the system: low-k dielectric materials are used in the semiconductor package for signal routing, while higher-k materials are used in the antenna package for radiation efficiency. This local quality approach allows each region to have the optimal material properties for its function, improving overall performance and manufacturing yield.
3Reliability
If low-k dielectric is used in semiconductor package for signal routing, then signal integrity is improved, but antenna radiation efficiency is reduced when same material is used
Solution Approach 1:
The patent applies different dielectric materials to different functional regions: low-k dielectric material is used in the semiconductor package where signal routing requires low loss and high integrity, while higher-k material is used in the antenna package where high permittivity improves radiation efficiency. This local quality differentiation resolves the contradiction by allowing each region to have the optimal material properties for its specific function.
Solution Approach 2:
By separating the semiconductor package and antenna package into distinct physical units with different materials, the patent enables each segment to use the optimal material for its function without compromise. The segmentation allows the low-k dielectric to be confined to the semiconductor package for signal integrity while the antenna package uses higher-k materials for efficient radiation.
4Volume of moving object
If antenna elements are integrated on semiconductor package, then form factor is reduced, but design flexibility and performance optimization are constrained
Solution Approach 1:
The patent segments the antenna elements from the semiconductor package into a separate antenna package, allowing each component to be independently optimized for its specific performance requirements while maintaining a compact overall form factor through the package-on-package architecture.
Solution Approach 2:
The antenna package is nested onto the semiconductor package in a package-on-package configuration, allowing both packages to occupy a small footprint area. This nesting approach maintains a reduced form factor while enabling independent optimization of each package's internal structure and materials for maximum performance.
Data Source
AI summary
Wireless modules having a semiconductor package attached to an antenna package is disclosed. The semiconductor package may house one or more electronic components as a single die package and/or a system in a package (SiP) implementation. The antenna package may be communicatively coupled to the semiconductor package using by one or more coupling pads. The antenna package may further have one or more radiating elements for transmitting and or receiving wireless signals. The antenna package and the semiconductor package may have dissimilar number of interconnect layers and/or dissimilar materials of construct.