Integrated Millimeter-Wave Antenna Structure for Compact MIMO Terminals
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Solution Overview
Problem
Mainstream millimeter-wave antennas in mobile terminals occupy excessive space, degrading performance, increasing system volume, and reducing product competitiveness due to their discrete design.
Innovation Solution
An antenna structure featuring a metal plate with accommodating grooves housing radiation and coupling pieces, integrated with a radio frequency module, which reduces space occupancy, enhances bandwidth, and supports multiple input multiple output (MIMO) functionality, improving communication diversity and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If millimeter-wave antennas are designed as discrete structures in mobile terminals, then antenna functionality is achieved, but antenna volume increases and performance degrades
Solution Approach 1:
The patent merges the antenna structure with the metal plate housing by integrating radiation elements and coupling pieces directly onto the metal plate surface. The metal plate serves dual purposes as both structural housing and antenna substrate, eliminating the need for separate discrete antenna components while maintaining or enhancing antenna performance through optimized coupling between the radiation elements and the conductive metal plate.
Solution Approach 2:
The metal plate is designed to serve multiple functions simultaneously: it acts as the terminal housing structure, provides electromagnetic shielding, and functions as the antenna substrate for millimeter-wave radiation. This multi-functional design reduces overall device volume while improving antenna performance through the synergistic interaction between the metal plate's structural and electromagnetic properties.
2Volume of stationary object
If discrete antenna structures are used, then antenna functionality is achieved, but system volume increases
Solution Approach 1:
The antenna structure is merged with the metal plate housing, combining what were previously separate components (antenna elements and housing) into a single integrated structure. This reduces system volume by eliminating the need for separate antenna assemblies while simplifying the overall device architecture.
Solution Approach 2:
The antenna system is segmented into functional elements (radiation elements, coupling pieces, grounding structures) that are distributed across the metal plate surface. Each segment performs a specific function, allowing for optimized placement and reduced overall system volume while maintaining manageable structural complexity.
3Reliability
If traditional antenna designs are used, then basic communication functionality is achieved, but wireless diversity connections are insufficient
Solution Approach 1:
The antenna system is divided into multiple independent radiation elements and coupling pieces that can operate semi-independently. This segmentation enables multiple input multiple output (MIMO) functionality by providing spatially separated radiation sources, improving wireless diversity connections while keeping each individual element relatively simple in structure.
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 integrated antenna structure reduces antenna volume, enhances wireless diversity connections, decreases communication disconnection probability, and increases data transmission rates, thereby improving user experience and product competitiveness.
Implementation Method 1
the radiation piece is configured to generate a resonance in a first preset band
Implementation Method 2
the coupling piece is configured to expand a bandwidth of the resonance in the first preset band
Data Source
AI summary
An antenna structure includes: a metal plate disposed with a first accommodating groove; an antenna unit including a radiation piece and a coupling piece; and a radio frequency module disposed on a first side of the metal plate and electrically connected to the radiation piece. At least one of the radiation piece and the coupling piece is disposed in the first accommodating groove. The radiation piece is insulated from the metal plate, the coupling piece is insulated from the metal plate, the radiation piece is disposed opposite to the coupling piece and insulated from the coupling piece. The radiation piece is located between the coupling piece and the radio frequency module. The radiation piece is configured to generate a resonance in a first preset band, and the coupling piece is configured to expand the bandwidth of the resonance in the first preset band.