IC Package Waveguide for High-Frequency Signal Transmission
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Solution Overview
Problem
Conventional IC packages face significant power losses when integrating high-frequency components due to inefficient connections, particularly at radio-frequency (RF) or millimeter wave frequencies.
Innovation Solution
The integration of a waveguide in the IC package assembly, which receives an electromagnetic signal from a first antenna and passes it to a second antenna with higher gain, enhancing transmission efficiency by using a conductive layer as a waveguide and reflecting radiated power back through an aperture, thereby increasing power spectral density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional IC packages are used to integrate high-frequency components, then packaging simplicity is maintained, but significant power losses occur at high frequencies
Solution Approach 1:
A waveguide structure is introduced as an intermediary component between the IC die and the external high-frequency component. The waveguide includes a conductive layer with an aperture that guides electromagnetic signals, reducing power loss by providing a dedicated transmission path optimized for high-frequency signals while maintaining separation between the IC package and the external component.
Solution Approach 2:
The connection between IC package and high-frequency component transitions from a planar two-dimensional connection to a three-dimensional waveguide structure. The waveguide extends vertically through the IC package substrate, creating a volumetric transmission path that reduces signal loss by minimizing exposure to lossy planar interfaces and improving electromagnetic field confinement.
2Ease of operation
If connection between conventional IC package and high-frequency component is simplified, then ease of integration is improved, but power losses increase
Solution Approach 1:
The waveguide structure serves multiple functions simultaneously: it acts as a transmission line for high-frequency signals, provides mechanical support for connecting the IC die to the external component, and offers electromagnetic shielding. This multi-functionality enables simplified integration without compromising signal integrity or increasing power loss.
Solution Approach 2:
The waveguide with its conductive layer and aperture serves as an intermediary transmission path that bridges the conventional IC package and the high-frequency component. It simplifies the integration process by providing a standardized interface while maintaining low power loss through optimized electromagnetic field guidance.
3Productivity
If waveguide is integrated into IC package assembly, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The waveguide structure is merged with the existing IC package assembly by integrating the conductive layer directly into the package substrate. The waveguide aperture is formed within the substrate, and the conductive layer is patterned to define the waveguide path, combining the transmission function with the existing package structure rather than adding a completely separate component.
Solution Approach 2:
The conductive layer in the waveguide serves dual purposes: it forms the waveguide transmission path for high-frequency signals and simultaneously provides electromagnetic shielding and structural support. This multi-functionality improves transmission efficiency while minimizing the increase in overall device complexity.
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 solution improves antenna gain and transmission efficiency by leveraging the waveguide to retransmit signals with increased power spectral density, addressing the power loss issues in conventional IC packages.
Implementation Method 1
The waveguide is configured to receive the electromagnetic signal from the first antenna and pass the electromagnetic signal to the second antenna
Implementation Method 2
reflecting radiated power back through an aperture, thereby increasing power spectral density
Data Source
AI summary
Some embodiments herein relate to a transmitter. The transmitter includes an integrated circuit (IC) package including a first antenna configured to radiate a first electromagnetic signal therefrom. A printed circuit board (PCB) substrate includes a waveguide configured to receive the first electromagnetic signal and to generate a waveguide signal based thereon. A second antenna can be electrically coupled to the waveguide and can radiate a second electromagnetic signal that corresponds to the waveguide signal. Other devices and methods are also disclosed.