Millimeter Wave Antenna Structure Preventing Metal Frame Shielding
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Solution Overview
Problem
Millimeter wave (mmWave) antennas in wireless communication devices are susceptible to interference from the metal frame, leading to shielding of the radiation field, which affects the device's communication efficiency.
Innovation Solution
The antenna structure includes first and second array antennas with monopole mmWave units arranged on a motherboard, where the radiating bodies are designed with specific substrate and vias configurations to prevent interference from the metal frame, ensuring radiation along multiple directions without shielding, and a second array antenna focused on the Z-axis direction to enhance coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mmWave antenna is applied in wireless communication device, then communication capability is improved, but radiation field is shielded by metal frame
Solution Approach 1:
The patent introduces a three-dimensional antenna structure with radiating bodies extending in multiple directions (X, Y, and Z axes) rather than traditional planar configurations. The first array antenna radiates along X and Y directions while the second array antenna radiates along Z direction, creating spatial diversity that bypasses metal frame shielding in any single plane.
Solution Approach 2:
The antenna system is divided into multiple independent array antennas (first array antenna with multiple first antenna units, second array antenna with multiple second antenna units). Each array operates in different spatial directions, allowing the system to overcome shielding by distributing radiation paths across multiple segments rather than relying on a single blocked path.
2Ease of manufacture
If traditional planar antenna structure is used, then manufacturing is simple, but radiation coverage is limited and susceptible to shielding
Solution Approach 1:
The patent transitions from two-dimensional planar antenna elements to three-dimensional radiating structures with components positioned at different heights and orientations. The radiating bodies include vertical elements and horizontal elements arranged in multiple layers, enabling radiation in three orthogonal directions while maintaining manufacturability through systematic arrangement.
Solution Approach 2:
The antenna structure incorporates adjustable and reconfigurable elements that can dynamically adapt their configuration. The system can switch between different radiation patterns and activate specific antenna units based on communication requirements, providing flexible coverage adjustment without complicating the basic structural design.
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 antenna structure effectively prevents interference from the metal frame, improving radiation coverage and gain across X, Y, and Z-axis directions, ensuring reliable communication without radiation shielding.
Implementation Method 1
the radiating bodies are designed with specific substrate and vias configurations to prevent interference from the metal frame, ensuring radiation along multiple directions
Implementation Method 2
the radiating bodies are designed with specific substrate and vias configurations to prevent interference from the metal frame
Data Source
AI summary
An antenna structure includes a first array antenna having a number of first antenna units. The antenna units are arranged along a first direction and a second direction. The first antenna units are monopole antennas. The monopole antennas include a radiating body having a strip portion and a bulb portion. The radiating body generates radiation along the first direction or the second direction. The strip portion is electrically coupled to a signal source. The bulb portion is electrically coupled to the strip portion. An end of the bulb portion away from the strip portion is semi-circular in shape.