Antenna Array Dielectric Height Optimization
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Solution Overview
Problem
Antenna arrays face coupling issues when directional antennas are arranged in an array form, leading to overlapping beams and reduced accuracy in estimating the direction of incident beams.
Innovation Solution
Incorporating a dielectric substance between directional antennas, with its height determined based on the distance between antennas and the beam patterns, to minimize coupling and improve beam direction estimation accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If directional antennas are arranged in an array form, then beam direction estimation becomes possible, but coupling occurs between antennas
Solution Approach 1:
A dielectric substance is introduced as an intermediary element positioned between adjacent directional antennas in the array. This dielectric substance acts as a mediator that reduces the electromagnetic coupling between antennas while allowing the array to maintain its beam direction estimation capability. The dielectric material is configured with specific height dimensions that correspond to the beam width of the antennas, creating a physical and electromagnetic barrier that mitigates harmful coupling effects.
2Area of stationary object
If antennas are placed closer together, then array size is reduced, but beam patterns overlap causing coupling
Solution Approach 1:
The dielectric substance serves as a spacing element that enables compact antenna arrangement while preventing beam pattern overlap. By positioning the dielectric material between antennas with a height corresponding to the beam width, the system achieves reduced array size without sacrificing isolation between elements, as the dielectric barrier prevents harmful electromagnetic interaction.
3Adaptability or versatility
If multiple dipole antennas are used for omni-directional coverage, then coverage is improved, but more antennas are needed for direction estimation
Solution Approach 1:
The patent changes the fundamental parameter of antenna radiation pattern from omni-directional (dipole) to directional. By using directional antennas with controlled beam patterns instead of omni-directional antennas, the system achieves direction estimation capability with fewer elements. The beam width parameter of the directional antennas is specifically considered when configuring the dielectric substance height, enabling effective coupling reduction with a more compact array configuration.
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 use of a dielectric substance between antennas reduces coupling and enhances the accuracy of beam direction estimation by optimizing the placement and interference between antennas.
Implementation Method 1
a dielectric substance, of which a height is determined based on a distance between the first and second antennas and forms of beam patterns of the first and second antennas
Data Source
AI summary
Disclosed is an antenna array, including: a first antenna; a second antenna; and a dielectric substance, of which a height is determined based on a distance between the first and second antennas and forms of beam patterns of the first and second antennas. According to the antenna array according to the exemplary embodiments of the present invention, it is possible to decrease coupling between the antennas.