Antenna Module With Folded Substrate And Projection For Miniaturization
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Solution Overview
Problem
There is a need for further miniaturization of antenna modules in mobile terminals to accommodate larger liquid crystal display screens and reduce size and thickness, while maintaining effective radio wave radiation capabilities.
Innovation Solution
The antenna module design includes a first substrate with a projection portion on a second substrate, allowing the radiation element to be arranged in a dead space, and utilizing a power feed circuit and power feed line to transmit radio frequency signals, enabling efficient radiation in multiple directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna module size is reduced to accommodate larger display screens, then the available arrangement space is reduced, but maintaining effective radio wave radiation capability becomes difficult
Solution Approach 1:
The patent transitions from a planar substrate arrangement to a three-dimensional folded structure. The substrate is folded along a bend line to form a substantially U-shape, enabling the antenna element to occupy vertical and lateral space simultaneously. This dimensional transformation allows the antenna module to maintain effective radiation area while reducing the horizontal footprint, directly resolving the contradiction between miniaturization and radiation capability.
Solution Approach 2:
The folded substrate structure allows the antenna element to be nested within the housing space more efficiently. By folding the substrate back on itself, the antenna module utilizes the vertical dimension within the housing, nesting the radiation elements in a compact configuration that would not be possible with a flat substrate, thus maintaining radiation capability while reducing overall module size.
2Area of stationary object
If the antenna module is arranged in limited space within the housing, then the arrangement flexibility is reduced, but the radiation coverage in multiple directions becomes limited
Solution Approach 1:
By folding the substrate into a U-shape configuration, the antenna module extends radiation elements in multiple spatial directions (front, side, and back surfaces) without requiring proportionally more arrangement space. The folded structure utilizes the third dimension (height/vertical space) to achieve multi-directional radiation coverage while constraining the horizontal arrangement footprint, thereby resolving the contradiction between limited space and radiation versatility.
Solution Approach 2:
The substrate is designed with a bend line that allows it to be folded into a substantially U-shape, creating a dynamic spatial configuration. This folded structure enables the antenna module to adapt its radiation pattern by orienting elements toward multiple directions (front surface, side surface, back surface) from a compact base position, providing versatile radiation coverage within limited arrangement space.
Data Source
AI summary
An antenna module (100) includes an antenna element (121), a dielectric substrate (150) on which the antenna element (121) is arranged, and a flexible substrate (160) having a first surface and a second surface. The flexible substrate (160) has a first portion (165), a bent portion (166) bent from the first portion (165) such that the first surface is located in an outer side portion, and a flat second portion (167) extending further from the bent portion (166). The dielectric substrate (150) is arranged on the first surface of the second portion (167). The dielectric substrate (150) has a projection portion (152) projecting from a contact surface between the dielectric substrate (150) and the flexible substrate (160) toward a side of the first portion (165) along the second portion (167). At least part of the antenna element (121) is arranged on the projection portion (152).