Detachable mmWave Antenna Structure for Dual-Band Frequency Correction
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Solution Overview
Problem
Conventional three-dimensional mmWave antennas have complex resonance cavities, limiting them to single frequency bands, and their frequencies can shift when integrated into electronic devices due to housing interference.
Innovation Solution
An antenna structure with a frame assembly and radiation assembly, featuring a simple resonance cavity and detachable radiation elements, allowing dual frequency operation and frequency adjustment through interchangeable radiation assemblies to maintain resonance within predetermined bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional three-dimensional mmWave antenna structure is used, then the antenna can operate in three dimensions, but the resonance cavity structure becomes complicated and it is limited to single frequency band operation
Solution Approach 1:
The antenna structure is divided into two independent parts: a frame assembly that forms the resonance cavity and provides mechanical support, and a radiation assembly that contains the radiating elements. This segmentation allows the radiation assembly to be optimized for multi-frequency operation while the frame assembly maintains a simple resonant structure, resolving the contradiction between versatility and complexity.
Solution Approach 2:
The frame assembly serves multiple functions: it provides the resonant cavity structure for frequency determination, offers mechanical support for the radiation assembly, and enables multi-frequency operation through its geometric design. This multi-functionality reduces overall structural complexity while maintaining adaptability across frequency bands.
2Reliability
If frequency testing is performed during manufacturing stage, then the antenna frequency can be verified to be in predetermined range, but the frequency may still be interfered and shifted when the antenna is arranged on an electronic device housing
Solution Approach 1:
The radiation assembly is designed to be detachably connected to the frame assembly, allowing it to be separated for independent frequency testing before final assembly. This extraction enables manufacturing-stage frequency verification while isolating the measurement from housing interference, and the detachable connection allows for post-assembly frequency correction by replacing the radiation assembly.
3Adaptability or versatility
If planar patch antennas are used, then the antenna structure remains simple and manufacturable, but the antenna can only be applied to single frequency band
Solution Approach 1:
The antenna transitions from a two-dimensional planar patch structure to a three-dimensional configuration where the radiation assembly includes elements extending in multiple spatial dimensions relative to the frame assembly. This dimensional change enables multi-frequency operation through resonant modes in different directions while maintaining manufacturing simplicity through standardized assembly processes.
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
Enables dual frequency band operation and high gain performance, while compensating for frequency shifts caused by device integration, reducing verification time and rework.
Implementation Method 1
The antenna structure is configured to receive a set of feeding signals via a set of signal feeding nodes to resonate
Data Source
AI summary
An antenna structure is configured to receive a set of feeding signals via a set of signal feeding nodes to resonate. The antenna structure includes a frame assembly and a radiation assembly. The frame assembly has four side walls. The four side walls form a resonance cavity. Two of the four side walls include two vias, and the two vias are electrically connected to the set of signal feeding nodes, and is configured to receive the set of feeding signals. The radiation assembly is correspondingly connected to the frame assembly. The two of the four side walls are adjacent to each other.