Slotted Metal Cover Antenna Module for Multi-Band Radiation
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Solution Overview
Problem
The use of metal chassis in electronic devices challenges the design of antenna modules, making it difficult to maintain appearance and radiation characteristics.
Innovation Solution
An antenna module design incorporating a metal cover with a slot, a substrate, and radiating elements that excite multiple resonant frequencies through loop structures and a shared excited section, allowing for multi-band operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal chassis is used to enhance durability and appearance, then the durability and appearance are improved, but the radiation characteristics of the antenna module deteriorate
Solution Approach 1:
The metal cover is segmented by introducing a slot that divides the continuous metal surface into separate regions. This segmentation allows electromagnetic fields to radiate through the slot while maintaining the overall metal chassis structure, thus resolving the contradiction between durability and radiation characteristics.
Solution Approach 2:
A slot is extracted or removed from the metal cover to create an opening for electromagnetic wave transmission. This extraction enables the antenna to radiate effectively while the remaining metal structure maintains its protective and aesthetic functions.
2Shape
If a metal cover is used to maintain appearance design, then the appearance is maintained, but the antenna radiation performance deteriorates
Solution Approach 1:
The metal cover is segmented by introducing a slot that divides the continuous metal surface into separate regions. This segmentation allows electromagnetic fields to radiate through the slot while maintaining the overall metal chassis structure, thus resolving the contradiction between durability and radiation characteristics.
Solution Approach 2:
The metal cover has different local properties: most areas remain continuous metal for appearance and protection, while the slot area is locally modified to allow electromagnetic transmission. This local quality change enables simultaneous achievement of aesthetic appearance and functional radiation performance.
3Adaptability or versatility
If radiating elements are added to achieve multi-band operation, then the frequency coverage is improved, but the device complexity increases
Solution Approach 1:
Multiple radiating elements are merged and integrated onto a single substrate, sharing common support structures and mounting interfaces. This merging approach enables multi-band operation while minimizing the increase in overall device complexity compared to using separate antenna modules for each frequency band.
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
Maintains good radiation characteristics while enabling multi-band resonant modes, such as covering the WiFi 6E band, by using a metal cover with a slot and loop structures on a substrate.
Implementation Method 1
the first radiating element is used to excite a first resonant frequency, and the second radiating element is used to excite a second resonant frequency
Data Source
AI summary
An antenna module includes a metal cover, a substrate, a first radiating element and a second radiating element. The metal cover has a slot. The substrate is disposed corresponding to the slot. The first radiating element is disposed on the substrate, the first radiating element includes an excited section and a first radiating section connected in sequence, and the excited section has a feeding point. The second radiating element is disposed on the substrate, the second radiating element includes the excited section and a second radiating section connected in sequence, and the excited section is located between the first radiating section and the second radiating section. A length of the first radiating section is greater than a length of the second radiating section, the first radiating element is used to excite a first resonant frequency, and the second radiating element is used to excite a second resonant frequency.