Antenna on Polymer Substrate for Silicon Device Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional silicon dies with high-loss substrates interfere with antennas, requiring shielding that restricts design flexibility and compromises RF performance due to impedance mismatch and interference.
Innovation Solution
A device assembly with a silicon device layer and a polymer substrate that acts as an insulator, allowing RF signals to pass through without the need for shielding, enabling more design flexibility and improved RF performance by integrating antennas directly into the silicon layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional silicon die with high-loss substrate is used, then the antenna is shielded from interference, but RF signal transmission is blocked and design flexibility is restricted
Solution Approach 1:
The patent extracts the antenna from the conventional silicon die structure and places it on a separate polymer substrate. This separation removes the antenna from the harmful high-loss silicon substrate environment while maintaining electrical connection through bonding pads and interconnect structures, thereby eliminating interference while preserving RF signal transmission capability
Solution Approach 2:
The patent introduces a polymer substrate as an intermediary between the silicon die and the antenna. This polymer substrate acts as a low-loss dielectric medium that allows RF signals to pass through without significant attenuation, while also serving as a mounting platform for the antenna structure, thus mediating between the conflicting requirements of interference shielding and signal transmission
2Object-affected harmful factors
If shielding is added to protect the antenna from substrate interference, then interference is reduced, but device complexity and design constraints increase
Solution Approach 1:
Instead of adding shielding structures to the silicon die, the patent extracts the antenna entirely and places it on a polymer substrate. This eliminates the need for complex shielding structures while still achieving the goal of protecting the antenna from substrate interference, thereby reducing device complexity
Solution Approach 2:
The patent changes the fundamental parameter of the substrate material from high-loss silicon to low-loss polymer. This material parameter change fundamentally alters the electromagnetic environment, eliminating the need for additional shielding structures and simplifying the overall device design
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
This configuration enhances RF signal transmission and reception, providing greater design flexibility and improved performance for mobile communication devices by eliminating interference and impedance issues, suitable for higher frequency communication systems.
Implementation Method 1
a polymer substrate that is formed with insulating material that does not interfere with the at least one antenna in the silicon device layer
Data Source
AI summary
Aspects disclosed in the detailed description include an antenna on a device assembly. A device assembly includes a silicon device layer having at least one antenna. The device assembly also includes a polymer substrate that is formed with insulating material that does not interfere with the at least one antenna in the silicon device layer. As a result, it is unnecessary to shield the at least one antenna from the polymer substrate, thus allowing radio frequency (RF) signals radiating from the at least one antenna to pass through the polymer substrate.