Millimeter-Wave Antenna Structure With Horizontal Waveguide Radiation
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Solution Overview
Problem
Conventional millimeter-wave antenna structures are limited in design flexibility and heat dissipation due to electromagnetic wave radiation being restricted to a single direction, necessitating placement on the side edge of mobile devices.
Innovation Solution
A millimeter-wave antenna structure with a substrate assembly, feeding stripline, and shielding cover that emits electromagnetic waves in a horizontal direction through a feeding opening structure and shielding cover, utilizing a shielding cover with increased height and transverse and longitudinal extension plates to facilitate waveguide transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional millimeter-wave antenna structures adopt antenna in package (AiP), then cost is saved and volume is reduced, but electromagnetic wave radiation is limited to a single upward direction, affecting design flexibility and heat dissipation
Solution Approach 1:
The patent transitions from conventional upward radiation (single dimension) to horizontal radiation through waveguide structure, adding a new spatial dimension for electromagnetic wave propagation. This dimensional change enables the antenna to be positioned in different locations within the device while maintaining radiation performance, thereby improving design flexibility without increasing volume.
2Volume of moving object
If conventional millimeter-wave antenna structures adopt antenna in package (AiP), then cost is saved and volume is reduced, but heat dissipation effect is affected due to limited radiation direction
Solution Approach 1:
The patent utilizes air as the propagation medium within the waveguide structure, replacing conventional solid or guided media. This pneumatic approach allows electromagnetic waves to propagate horizontally through air, improving heat dissipation by enabling better thermal convection and radiation pathways while maintaining the compact AiP form factor.
3Device complexity
If electromagnetic wave signal is radiated along a single upward direction, then antenna structure is simplified, but radiation loss increases and efficiency decreases
Solution Approach 1:
The patent introduces a waveguide structure as an intermediary component between the feeding stripline and the radiation space. This waveguide mediates the electromagnetic energy transmission, guiding it horizontally with reduced reflection and loss compared to direct upward radiation, thereby improving efficiency while maintaining structural simplicity.
4Productivity
If shielding cover height is increased along the direction toward the opening, then waveguide transmission efficiency is improved, but device volume increases
Solution Approach 1:
The patent optimizes the shielding cover dimensions by changing key parameters: increasing height along the radiation direction while controlling width and length. This parameter adjustment achieves improved waveguide transmission efficiency through better field confinement and reduced leakage, while the selective dimensioning prevents excessive overall volume increase.
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
The structure achieves low loss and high efficiency in electromagnetic wave radiation by converting signals to a waveguide structure using air as a medium, enhancing directivity and reducing energy reflection.
Implementation Method 1
The feeding stripline is configured to emit an electromagnetic wave signal in a single and horizontal direction through the feeding opening structure and the shielding cover
Implementation Method 2
converting signals to a waveguide structure using air as a medium
Data Source
AI summary
A millimeter-wave antenna module includes a circuit board and a plurality of millimeter-wave antenna structures. Each of the millimeter-wave antenna structures includes a substrate assembly, a feeding opening structure, a feeding stripline, and a shielding cover. The feeding opening structure and the feeding stripline are each disposed in the substrate assembly, and a portion of the feeding stripline is exposed in the feeding opening structure. The feeding opening structure is covered by the shielding cover, a side of the shielding cover has an opening, and a height of the shielding cover is increased along a direction toward the opening. The feeding stripline is configured to emit an electromagnetic wave signal in a single and horizontal direction through the feeding opening structure and the shielding cover.