Stacked Dielectric Antenna Device for Multi-Bandwidth mmWave Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in millimeter wave (mmWave) communication, particularly in 5G, is to design a multi-bandwidth antenna that can efficiently transmit and receive radio frequency (RF) signals with various bandwidths using a reduced antenna installation area, given the shrinking bezel size in portable electronic devices.
Innovation Solution
The antenna device comprises a first and second dielectric layer with distinct dimensions and dielectric constants, featuring antenna patches on each layer, where the second layer has a greater height and width, allowing for the transmission and reception of RF signals with different frequency bandwidths, enhancing the gain and isolation of the second antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the antenna installation area is reduced to accommodate shrinking bezel size, then the device form factor is improved, but the antenna performance and signal transmission efficiency deteriorate
Solution Approach 1:
The patent transitions from a conventional planar antenna structure to a three-dimensional stacked configuration with multiple dielectric layers and antenna patches at different heights. This vertical dimensionality change allows multiple antennas to occupy overlapping horizontal spaces while maintaining electrical isolation, effectively multiplying the antenna capacity within the same footprint area and resolving the contradiction between reduced installation area and maintained signal transmission efficiency.
Solution Approach 2:
The patent implements a nested structure where multiple antenna systems are embedded within each other across different dielectric layers. The first and second antenna patches are positioned at different vertical levels within the stacked dielectric structure, creating a nested arrangement that maximizes space utilization. This nesting allows multiple antennas to coexist in a compact volume without significant mutual interference, addressing the area versus performance trade-off.
2Device complexity
If multiple antennas with different frequency bandwidths are integrated into a single antenna structure, then the device complexity is reduced, but the isolation between antennas deteriorates
Solution Approach 1:
The patent divides the integrated antenna system into distinct segments: separate first and second antenna patches, different dielectric layers with varying dielectric constants, and ground planes at different levels. This segmentation allows each antenna to be optimized for its specific frequency bandwidth while maintaining physical and electrical separation. The segmented structure reduces mutual coupling and interference between antennas operating at different frequencies, resolving the contradiction between integration and isolation.
Solution Approach 2:
The patent applies local quality by assigning different dielectric constants to different layers (first dielectric constant for the first dielectric layer, second dielectric constant for the second dielectric layer) and varying the heights of dielectric layers. These localized property variations create frequency-selective environments that enhance isolation between antennas at different frequency bands while maintaining a unified integrated structure. The local quality adjustments optimize each antenna's performance without compromising the other.
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 configuration increases the gain of the second antenna for high-frequency bandwidths and reduces interference from the first antenna, improving the overall RF signal transmission and reception efficiency within the limited space.
Implementation Method 1
a first dielectric layer and a second dielectric layer separated from each other in a first direction, the first dielectric layer comprising a first side and a second side facing each other in a third direction, and the second dielectric layer including a third side and a fourth side facing each other in the third direction
Implementation Method 2
a signal comprising a first frequency bandwidth is transmitted and received based on an electrical signal applied to the first antenna patch, wherein a signal with a second frequency bandwidth that is different from the first frequency bandwidth is transmitted and received based on an electrical signal applied to the second antenna patch
Data Source
AI summary
An antenna device includes first and second dielectric layers. The first dielectric layer includes first and second sides facing each other in a third direction. The second dielectric layer includes third and fourth sides facing each other in the third direction. A first antenna patch is disposed on the first side of the first dielectric layer. A second antenna patch is disposed on the third side of the second dielectric layer. Signals with a first frequency bandwidth are transmitted or received electrical signals applied to the first antenna patch. Signals with a different second frequency bandwidth are transmitted or received by an electrical signal applied to the second antenna patch. A height of the second dielectric layer measured to the third side from the fourth side in a direction parallel to a third direction is greater than a height of the first dielectric layer measured to the first side from the second side.