Shielded Antenna Assembly With Integrated RF Chip for EMI Isolation
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Solution Overview
Problem
Conventional antenna designs in electronic devices face interference from power supplies, display screens, and other equipment, leading to inefficient electromagnetic wave radiation and interference with display screens, which cannot be fully mitigated by shielding other components, and result in increased assembly costs.
Innovation Solution
An antenna assembly featuring a dielectric substrate with an antenna unit and a radio frequency chip, both integrated on the same substrate, and covered by a metal shielding cover on the opposite side, eliminating the need for coaxial cables and shielding other equipment, thereby reducing interference and assembly costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a metal shielding cover is added to shield other electronic equipment from antenna interference, then the interference to the antenna is reduced, but the assembly cost increases
Solution Approach 1:
The patent combines the antenna unit and radio frequency chip onto the same dielectric substrate, integrating two previously separate components into a single assembly. This integration eliminates the need for separate shielding covers for both components, reducing overall assembly cost while maintaining electromagnetic interference protection through the unified structure and single shielding cover.
2Ease of operation
If coaxial cables are used to connect the antenna unit and radio frequency chip, then the connection is established, but electromagnetic interference occurs along the transmission line
Solution Approach 1:
The patent extracts and eliminates the coaxial cable from the system by directly integrating the antenna unit and radio frequency chip on the same dielectric substrate. This removal of the intermediate transmission line eliminates the source of electromagnetic interference that would have occurred along the cable, while maintaining the necessary electrical connection through direct substrate integration.
3Adaptability or versatility
If the antenna radiates electromagnetic waves omnidirectionally, then the coverage is maximized, but the display screen flashes and other equipment is interfered with
Solution Approach 1:
The patent applies local quality by placing a metal shielding cover specifically on one side of the antenna assembly (the side facing away from the antenna unit). This localized shielding approach allows the antenna to maintain omnidirectional radiation coverage while blocking electromagnetic waves from interfering with specific sensitive components like the display screen, thus resolving the contradiction between coverage and interference prevention.
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
This configuration effectively isolates the antenna from electromagnetic interference, ensures efficient electromagnetic wave radiation, and prevents interference with the display screen, while reducing manufacturing costs by eliminating the need for additional shielding covers in other electronic device components.
Implementation Method 1
a metal shielding cover, being arranged on a surface of the dielectric substrate facing away from the antenna unit, and coving the antenna unit
Implementation Method 2
a dielectric substrate; an antenna unit, being arranged on a surface of the dielectric substrate
Data Source
AI summary
An antenna assembly and an electronic device are provided. The antenna assembly comprises a dielectric substrate; an antenna unit, arranged on a surface of the dielectric substrate; a radio frequency chip, arranged on a surface of the dielectric substrate, and connected with the antenna unit; and a metal shielding cover, arranged on another surface of the dielectric substrate facing away from the antenna unit, and coving the antenna unit. The electromagnetic interference to antenna unit caused by other electronic devices of electronic equipment can be isolated through the metal shielding cover, and the antenna unit and the radio frequency chip of the antenna assembly can be arranged on the same dielectric substrate, avoiding the use of a coaxial cable to connect the antenna unit and the radio frequency chip, thereby solving the problem of electromagnetic interference to and ensuring the radiation performance of the antenna unit.