Bent Dielectric Antenna Module Layout for Compact RF Packaging
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Solution Overview
Problem
The challenge is to miniaturize antenna modules for communication devices while maintaining their antenna characteristics, as reducing the size of antenna elements or dielectric layers leads to deteriorated performance.
Innovation Solution
The solution involves a dielectric substrate with a unique configuration, including a first and second flat portion connected by a bent portion, where at least part of the radiation element is disposed on a protruding portion formed by bending the substrate, allowing the element to occupy dead space without reducing the dielectric layer's thickness, thus maintaining antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the effective area of antenna element or thickness of dielectric layer is reduced to miniaturize antenna module, then the antenna module size is reduced, but antenna characteristics deteriorate
Solution Approach 1:
The dielectric substrate is bent to form a three-dimensional structure with first and second flat portions at different heights, utilizing the vertical dimension to reduce the horizontal footprint of the antenna module while maintaining the required effective area and dielectric thickness for proper antenna operation
Solution Approach 2:
The dielectric substrate is divided into multiple flat portions (first flat portion, second flat portion) connected by bent portions, allowing different regions to serve different functions - the radiation element is disposed on the first flat portion while the second flat portion provides additional structural support and space optimization
Data Source
AI summary
An antenna module includes a dielectric substrate and a radiation element disposed on the dielectric substrate. The dielectric substrate includes a flat portion (131) and a flat portion (130) having mutually different normal directions, and a bent portion connecting the flat portion (131) and the flat portion (130) to each other. The flat portion (131) has a protruding portion partially protruding in a direction toward the flat portion (130) along the flat portion (131) from a boundary portion between the bent portion and the flat portion (131). The flat portion (131) and the bent portion are connected to each other at a position where the protruding portion is not provided in the flat portion (131). At least a part of the radiation element is disposed on the protruding portion.