Recessed Antenna Feed Structure for Smaller Stable Packages
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Solution Overview
Problem
Electronic devices using antennas for signal transmission face challenges with coupling members that require installation space, hinder package minimization, and affect antenna performance stability.
Innovation Solution
An electronic device design featuring an antenna element with a recessed sidewall for signal feeding, eliminating the need for coupling members and integrating an antenna component that partially covers a package structure, which includes a cover and encapsulant with a tapered recess for improved signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coupling members are used to connect antenna layer and circuit layer, then electrical connection is achieved, but installation space is required and package size increases
Solution Approach 1:
The patent removes the coupling member from the antenna structure by utilizing the sidewall of the recessed region as the feeding interface. This extraction eliminates the need for separate coupling members, thereby reducing package size while maintaining electrical connection functionality through direct sidewall-to-trace coupling.
Solution Approach 2:
The patent merges the functions of the coupling member and the antenna recessed region by making the sidewall of the recessed region itself the feeding interface. This integration combines the structural support and signal feeding functions into a single element, eliminating the need for separate coupling members and reducing overall package volume.
2Ease of manufacture
If coupling members are used for signal transmission, then electrical connection is established, but signal transmission stability is compromised and antenna performance is affected
Solution Approach 1:
The patent extracts the coupling member from the signal transmission path and replaces it with the sidewall of the recessed region. This eliminates potential sources of signal instability associated with separate coupling members while simplifying the assembly process, as the sidewall inherently provides the feeding interface without requiring additional components.
Solution Approach 2:
The sidewall of the recessed region serves dual purposes: it provides structural definition of the antenna geometry and simultaneously functions as the signal feeding interface. This self-service approach eliminates the need for separate coupling members, simplifying manufacturing while ensuring stable signal transmission through direct sidewall-to-trace electrical coupling.
3Reliability
If coupling members are installed, then electrical connection is achieved, but production efficiency decreases due to additional installation steps
Solution Approach 1:
The patent removes the coupling member from the assembly process entirely, utilizing the sidewall of the recessed region as the feeding interface. This extraction eliminates additional installation steps, thereby improving production efficiency while maintaining reliable electrical connection through direct sidewall-to-trace coupling.
Solution Approach 2:
The recessed region sidewall inherently provides the electrical feeding interface, eliminating the need for separate coupling member installation. This self-service approach integrates the connection function into the antenna structure itself, streamlining the production process and improving overall manufacturing efficiency.
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 design reduces device size, enhances signal transmission stability, and increases antenna gain by eliminating the need for coupling members and utilizing an air cavity as a resonant cavity with lower dielectric constant.
Implementation Method 1
utilizing an air cavity as a resonant cavity with lower dielectric constant
Implementation Method 2
utilizing an air cavity as a resonant cavity with lower dielectric constant
Data Source
AI summary
The present disclosure provides an electronic device. The electronic device includes a circuit structure, an interconnection structure disposed over the circuit structure, and an antenna element disposed over the interconnection structure. The antenna element defines a first recess having a sidewall, and the sidewall of the first recess of the antenna element is configured to feed a signal to the antenna element and is electrically connected to the interconnection structure.