Wide-band Dielectric Antenna Reducing Mutual Coupling
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Solution Overview
Problem
Current wireless communication devices require separate antennas for different frequency bands, leading to increased costs and challenges in achieving wide-band operation, especially in mobile environments where mutual coupling between antennas hampers MIMO communication systems.
Innovation Solution
A small wide-band antenna design featuring conductive layers on a dielectric substrate with a specific configuration, including a power feeding element and a reference potential element, which reduces mutual coupling and allows operation across a wide frequency band from 2.3 to 3.6 GHz, utilizing a short-circuiting conductive layer to minimize antenna size and coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are provided for different frequency bands, then frequency band compatibility is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a single antenna structure that can operate across multiple frequency bands (2.3-3.6 GHz) by using a dielectric substrate with conductive layers configured to support wide-band operation. This universal antenna design eliminates the need for separate antennas for different frequency bands, thereby reducing device complexity while maintaining frequency band compatibility.
Solution Approach 2:
The patent combines multiple frequency band operations into a single antenna system by integrating conductive layers on a dielectric substrate that can handle multiple frequency ranges simultaneously. This merging approach consolidates what would traditionally require multiple separate antennas into one unified structure, reducing overall system complexity.
2Volume of moving object
If antenna size is reduced, then device miniaturization is improved, but operational bandwidth deteriorates
Solution Approach 1:
The patent employs a composite structure consisting of a dielectric substrate with integrated conductive layers. This composite material approach allows the antenna to achieve wide-band operation (2.3-3.6 GHz) in a compact form factor, overcoming the traditional trade-off between size reduction and bandwidth maintenance.
Solution Approach 2:
The patent utilizes a planar configuration of conductive layers on a dielectric substrate, transitioning from traditional three-dimensional antenna structures to a two-dimensional integrated design. This dimensional change enables wide-band operation in a reduced volume by efficiently utilizing the surface area of the substrate.
3Area of stationary object
If multiple antennas are placed in proximity for MIMO, then space utilization is improved, but mutual coupling increases
Solution Approach 1:
The patent introduces a dielectric substrate as an intermediary between conductive layers and between adjacent antenna elements. This dielectric material acts as a mediator that reduces mutual coupling effects while allowing compact placement of multiple antenna elements, thereby enabling space-efficient MIMO configurations without excessive coupling.
4Adaptability or versatility
If conventional antenna designs are used for wide-band operation, then frequency coverage is improved, but reflection coefficient increases
Solution Approach 1:
The patent optimizes the electrical parameters of the conductive layers and dielectric substrate to achieve low reflection coefficients across the wide frequency range of 2.3-3.6 GHz. By carefully adjusting layer thicknesses, conductive material properties, and geometric configurations, the antenna maintains good impedance matching and low reflections throughout the entire operational bandwidth.
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 achieves a wider frequency band with reduced reflection coefficient and size, enabling efficient operation across multiple frequency bands without the need for multiple antennas, thus enhancing compatibility and reducing production costs.
Implementation Method 1
an antenna includes a power feeding element and a reference potential element
Implementation Method 2
conductive layers on a dielectric substrate with a specific configuration
Data Source
Figure 1A~1E
Figure 2
Figure 3A~3E
AI summary
An antenna includes a dielectric substrate and an antenna element. The antenna element includes a power feeding element and a reference potential element. The power feeding element includes a first conductive layer formed over the dielectric substrate, the first conductive layer extending in a first direction and having a first length along the first direction. The reference potential element includes a second conductive layer formed over the dielectric substrate, the second conductive layer extending in a second direction opposed to the first direction from a second position, the second point being apart by a first distance from a first position on an end of the first conductive layer, and a third conductive layer formed over the dielectric substrate, the third conductive element extending from the second point in the first direction apart by a second distance from the first conductive layer and having a third length along the first direction.