Multi-Antenna Array Integration via Conjoined Slot Structures
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Solution Overview
Problem
Existing multi-antenna array designs face challenges in achieving high integration, thinness, and resistance to coupling interference, leading to decreased data transmission rates due to mutual and surrounding coupling issues, which complicates the integration of multiple antennas in wireless communication devices.
Innovation Solution
A highly-integrated multi-antenna array design featuring a first and second conductor layer with conjoined conducting structures and slot antennas, where the radiating slot structures and signal coupling lines partially overlap or cross, forming a conjoined slot structure to reduce parasitic capacitive effects and enhance energy isolation, thereby achieving good impedance matching and isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple adjacent antennas with identical operating band are designed to achieve high integration and thinness, then the integration level and profile are improved, but mutual coupling and surrounding coupling interference increase leading to degraded antenna radiation performance
Solution Approach 1:
The patent transitions from planar antenna elements to three-dimensional conjoined conducting structures spanning multiple conductor layers. The slot antennas are formed by etching through multiple layers, creating vertical and lateral dimensions that enable compact integration while maintaining radiation performance through controlled coupling paths.
Solution Approach 2:
The conjoined conducting structures are nested within a multi-layer conductor configuration where slot antennas are embedded between first and second conductor layers. The signal coupling lines are integrated within the same structural framework, creating a compact nested arrangement that reduces overall device volume while managing electromagnetic coupling.
2Reliability
If periodic structures are added on the ground part between multiple antennas to increase energy isolation, then coupling resistance is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent merges the ground structure with the slot antenna formation process. The conjoined conducting structures serve dual functions as both antenna elements and ground references, eliminating the need for separate periodic isolation structures. The slot antennas themselves are formed by etching patterns in the conductor layers that inherently provide isolation functions.
Solution Approach 2:
The conjoined conducting structures perform multiple functions simultaneously: they serve as radiating elements, provide ground references, establish signal coupling paths, and create isolation between adjacent antennas. This multi-functionality reduces the need for additional specialized components and simplifies manufacturing.
3Reliability
If periodic structures are added to increase energy isolation, then coupling resistance is improved, but the overall size of the multi-antenna array increases
Solution Approach 1:
The patent employs thin conductor layers separated by small intervals to create compact antenna structures. The slot antennas are formed as thin etched patterns within the conductor layers, enabling high isolation without requiring large spacing between antenna elements. The thin-film approach allows compact integration while maintaining electromagnetic performance.
4Volume of moving object
If signal coupling lines are placed close to the second conductor layer to achieve compact design, then integration is improved, but parasitic capacitive effects increase degrading impedance matching
Solution Approach 1:
The patent introduces a dielectric layer as an intermediary between the signal coupling lines and the second conductor layer. This dielectric medium controls the capacitive coupling effect, allowing compact spacing while managing parasitic capacitance through dielectric material selection and thickness optimization.
Solution Approach 2:
The patent optimizes the coupling interval distance and dielectric material properties to control parasitic capacitive effects. By adjusting the spacing parameter and dielectric constant, the design achieves compact dimensions while maintaining acceptable impedance matching performance through parameter optimization.
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 design effectively directs radiating energy away from surrounding interference, achieving high integration, low profile, and thinness while maintaining good impedance matching and isolation, thus enhancing data transmission rates in wireless communication devices.
Implementation Method 1
Each of the slot antennas is excited to generate at least one resonant mode covering at least one identical first communication band
Implementation Method 2
All of the conjoined conducting structures electrically connect the first conductor layer and the second conductor layer
Implementation Method 3
The conjoined slot structure is formed at the second conductor layer and connects with all of the radiating slot structures respectively
Data Source
AI summary
A highly-integrated multi-antenna array comprising a first conductor layer, a second conductor layer, a plurality of conjoined conducting structures, a plurality of slot antennas, and a conjoined slot structure is provided. The first conductor layer and the second conductor layer are spaced apart by a first interval, and are electrically connected by the conjoined conducting structures. Each slot antenna has a radiating slot structure and a signal coupling line, which partially overlap or cross each other. All radiating slot structures are formed at the second conductor layer. Each signal coupling line is spaced apart from the second conductor layer by a coupling interval and has a signal feeding point. Each slot antenna is excited to generate at least one resonant mode covering at least one identical first communication band. The conjoined slot structure is formed at the second conductor layer and connects with all radiating slot structures.