Vertical Passive Component Stack for Compact High-Frequency Mounting
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Solution Overview
Problem
The increasing demand for high frequency radio signal communication, particularly in 5G spectrum frequencies, has led to challenges in miniaturization of passive components, which results in reduced power handling capacity and difficulty in surface mounting small components.
Innovation Solution
A vertical component stack is proposed, where components are stacked along a vertical direction with their input and output ports exposed on a lower surface, allowing for a compact configuration that reduces the footprint on a mounting surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If components are miniaturized to increase data transmission speed and reduce device size, then the device footprint is reduced, but the power handling capacity of components decreases
Solution Approach 1:
The patent transitions from traditional planar component layout to a three-dimensional vertical stacking architecture. Multiple passive components are arranged in vertical layers along the Z-axis, allowing the system to maintain compact footprint while increasing power handling capacity through additional component layers that can process higher power signals.
2Volume of moving object
If components are miniaturized to reduce device size, then the device footprint is reduced, but the difficulty of surface mounting small components increases
Solution Approach 1:
The invention moves component mounting from a two-dimensional surface mounting problem to a three-dimensional vertical stacking problem. By arranging components in vertical layers with standardized interfaces, the manufacturing process becomes more manageable despite component miniaturization, as components can be stacked and connected through vertical vias and interlayer connections rather than requiring precise surface placement.
3Area of stationary object
If components are stacked vertically to reduce footprint, then the device footprint is reduced, but the complexity of electrical connections increases
Solution Approach 1:
The patent resolves connection complexity by organizing electrical interconnections in the vertical dimension. Conductive vias extend through substrate layers to connect corresponding pads on different component layers, transforming complex lateral routing into simpler vertical connections. This layered via structure systematically manages electrical connectivity across multiple stacking levels.
4Area of stationary object
If components are stacked vertically to reduce footprint, then the device footprint is reduced, but heat generation and thermal management become more challenging
Solution Approach 1:
The invention addresses thermal management by utilizing vertical thermal pathways. Thermal vias and heat dissipation structures are integrated into the vertical stacking architecture, allowing heat to conduct upward through the substrate layers and component stacks. This vertical thermal management approach complements the vertical signal routing and enables effective heat removal from densely packed components.
Data Source
AI summary
A vertical component stack, assembly, and method are provided. For example, a vertical component stack may include a plurality of components that each include an upper surface and a lower surface opposite the upper surface along a vertical direction. The plurality of components are stacked along the vertical direction such that a lower surface of a second component of the plurality of components is disposed over an upper surface of a first component of the plurality of components. An input and an output of each component of the plurality of components is exposed on a lower surface of the first component of the plurality of components.