Dielectric Resonator Antenna for Millimeter Wave Signal Propagation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices face challenges in incorporating effective wireless circuitry for millimeter and centimeter wave communications due to substantial attenuation and distortion of radio-frequency signals, as well as the presence of conductive components that complicate the integration of such circuitry.
Innovation Solution
The implementation of a phased antenna array using dielectric resonator antennas, which include a dielectric resonating element embedded in a low dielectric constant substrate, mounted on a flexible printed circuit, and fed by a stripline with a slot for near-field electromagnetic coupling, allowing for efficient propagation of radio-frequency signals through a display cover layer while occupying minimal space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antennas are used for millimeter and centimeter wave communications, then wireless communication capability is provided, but signal attenuation and distortion occur due to substantial losses at these frequencies
Solution Approach 1:
The patent changes the dielectric constant parameter of the substrate material to optimize signal propagation. By using a substrate with a specific dielectric constant range (2.2-3.5), the antenna achieves better impedance matching and reduced signal attenuation at millimeter and centimeter wave frequencies, directly addressing the energy loss problem
Solution Approach 2:
The patent employs composite material structures including dielectric resonator elements embedded in dielectric substrates, combined with conductive traces and ground planes. This composite approach creates a phased array antenna system that maintains signal integrity while enabling millimeter wave operation through coordinated interaction of different material properties
2Adaptability or versatility
If conductive electronic device components are present, then device functionality is enhanced, but integration of wireless circuitry for millimeter and centimeter wave communications becomes difficult
Solution Approach 1:
The patent segments the antenna system into modular phased array elements, each consisting of dielectric resonator components, conductive traces, and ground plane sections. This segmentation allows the wireless circuitry to be integrated alongside other conductive device components without mutual interference, as each segment can be independently positioned and optimized
Solution Approach 2:
The dielectric substrate acts as an intermediary between conductive components, providing electrical isolation while maintaining mechanical integration. The dielectric material with controlled permittivity enables signal transmission while preventing unwanted coupling between adjacent conductive elements, facilitating seamless integration of wireless circuitry
3Reliability
If dielectric resonator antennas with high dielectric constant material are used, then antenna efficiency is improved, but lateral space requirements increase
Solution Approach 1:
The patent optimizes the dielectric constant parameter to a specific range (2.2-3.5) that balances antenna efficiency with compact dimensions. By carefully selecting and controlling the dielectric constant, the design achieves efficient millimeter wave radiation while maintaining a small lateral footprint suitable for modern thin-profile devices
Solution Approach 2:
The patent transitions from planar antenna designs to three-dimensional dielectric resonator structures. By utilizing the vertical dimension with embedded resonator elements and multi-layer substrate configurations, the antenna achieves enhanced efficiency without increasing lateral area, effectively moving the solution into the third dimension
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 solution enables efficient wireless communication in the 10 GHz to 300 GHz frequency range with improved antenna efficiency and reduced signal reflections, allowing for compact integration within electronic devices.
Implementation Method 1
The stripline may indirectly feed radio-frequency signals for the slot via near-field electromagnetic coupling
Implementation Method 2
The slot may couple the radio-frequency signals into the dielectric resonating element to excite one or more electromagnetic resonant modes of the dielectric resonating element
Implementation Method 3
When excited, the dielectric resonating element may serve as a waveguide that propagates wave fronts of the radio-frequency signals along its length and through the display cover layer
Implementation Method 4
The dielectric matching layer may help to match the impedance of the dielectric resonating element to the impedance of the display cover layer
Data Source
AI summary
An electronic device may be provided with a phased antenna array and a display cover layer. The phased antenna array may include a dielectric resonator antenna. The dielectric resonator antenna may include a dielectric resonating element embedded in a lower permittivity dielectric substrate. The substrate and the resonating element may be mounted to a flexible printed circuit. A slot may be formed in ground traces on the flexible printed circuit and aligned with the resonating element. The slot may excite resonant modes of the resonating element. The resonating element may convey corresponding radio-frequency signals through the cover layer. A dielectric matching layer may be interposed between the resonating element and the cover layer. If desired, the slot may radiate additional radio-frequency signals and the matching layer may have a tapered shape. Dielectric resonator antennas for covering different polarizations and frequencies may be interleaved across the array.