3D Feed Stripline Jump Structure for Compact Phase Shifting
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Solution Overview
Problem
Existing feed striplines in communication devices, such as base stations, have a large area ratio due to their plane structure, which hinders miniaturization and efficient utilization of space.
Innovation Solution
A three-dimensional feed stripline structure with a signal input line and power branch lines that utilize a jump structure to span across different planes, allowing for separate transmission paths and adjustable phase differences, thereby reducing the overall volume and improving space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a plane structure is used for the feed stripline, then the electrical performance is ensured, but the area ratio becomes large which hinders miniaturization
Solution Approach 1:
The patent transitions from a two-dimensional plane structure to a three-dimensional structure by introducing jump structures that allow power branch lines to extend in the vertical direction (Z-axis) using vias through the substrate. This dimensional change enables the feed stripline to achieve compact planar footprint while maintaining proper electrical path lengths and signal integrity through controlled 3D routing.
2Area of stationary object
If power branch lines extend along different transmission paths in a plane, then signal serial connection is avoided, but the plane area becomes difficult to control with unused areas
Solution Approach 1:
The patent utilizes the vertical dimension to resolve area control issues by allowing power branch lines to jump between layers. This enables more flexible routing where lines can extend in the Z-axis direction through vias, improving space utilization and eliminating unused planar areas while maintaining manufacturability through standard multi-layer PCB or substrate fabrication processes.
3Volume of moving object
If the first power branch line spans from one side of the second power branch line to the other side using a jump structure, then space utilization is improved, but the structure becomes more complex
Solution Approach 1:
The patent segments the power branch lines into multiple sections connected by jump structures (vias). The first power branch line is divided into segments that are connected through vias to span across the second power branch line in the vertical direction. This segmentation enables compact 3D routing while maintaining electrical continuity and signal integrity, with each segment being independently manufacturable.
Solution Approach 2:
The jump structures (vias) serve as intermediary elements that connect different segments of the power branch lines in the vertical direction. These vias act as mediators enabling the first power branch line to span across the second power branch line without direct planar intersection, thus achieving compact volume while managing structural complexity through standardized intermediary connection elements.
Data Source
AI summary
In accordance with an embodiment, a feed stripline includes: a signal input line; a first power branch line; and a second power branch line. A first end of the signal input line is configured to be conductively coupled to an external signal source, a second end of the signal input line is electrically connected to each of the first power branch line and the second power branch line, the first power branch line includes a jump structure, the first power branch line spans from a first side of the second power branch line to a second other side of the second power branch line via the jump structure, and the jump structure and the second power branch line are spaced apart from each other.