Segmented Electromagnetic Reflector for High-Gain DRA Beam Shaping
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Solution Overview
Problem
Existing dielectric resonator antenna (DRA) systems face limitations such as limited bandwidth, efficiency, gain, and directionality, as well as complex fabrication techniques, which hinder the development of high-gain DRA systems with high directionality in the far field.
Innovation Solution
An electromagnetic device featuring a monolithic electromagnetically reflective structure with an electrically conductive structure and a plurality of electrically conductive reflectors, arranged in an ordered configuration, which forms a recess with an electrically conductive base to enhance signal reception and radiation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional DRA system is used, then the structure is simple, but the gain and directionality are limited
Solution Approach 1:
The reflective structure is divided into multiple discrete reflector elements (first reflector, second reflector, third reflector, fourth reflector) arranged in a specific geometric pattern. Each reflector can be independently positioned and optimized, allowing the system to achieve high gain and directionality through coordinated operation of segmented components rather than a monolithic structure.
Solution Approach 2:
The patent introduces a vertical dimension by positioning reflectors at different heights above the DRA array (first and second reflectors at first height, third and fourth reflectors at second height). This three-dimensional arrangement creates multiple reflection paths and enables beam shaping in both horizontal and vertical planes, significantly improving directionality and gain without proportionally increasing structural complexity.
2Adaptability or versatility
If existing DRA systems are used, then fabrication is simple, but bandwidth and efficiency are limited
Solution Approach 1:
The reflective structure serves multiple functions simultaneously: it provides electromagnetic reflection, shapes the radiation pattern, controls beam direction, and extends operational bandwidth. The same geometric arrangement of reflectors achieves all these objectives without requiring additional components, making the structure universally applicable to different DRA configurations while maintaining fabrication simplicity.
Solution Approach 2:
The patent employs a composite reflective structure combining multiple reflector types (planar reflectors, curved reflectors, and potentially different material compositions) arranged in a unified geometric pattern. This composite approach enables the system to operate across broader bandwidths by leveraging the complementary electromagnetic properties of different reflector configurations while maintaining a single integrated fabrication process.
3Ease of operation
If a complex reflective structure is added to improve directionality, then directionality improves, but device complexity increases
Solution Approach 1:
The reflective structure employs asymmetric positioning and configuration of reflector elements relative to the DRA array. The first and second reflectors are positioned differently from the third and fourth reflectors, creating asymmetric reflection paths that steer the beam in specific directions. This asymmetric arrangement achieves high directionality without requiring a fully complex symmetric structure, optimizing the directionality-to-complexity ratio.
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 solution enables the creation of high-gain DRA systems with improved directionality and efficiency, overcoming the limitations of existing DRA systems by providing a more effective electromagnetic reflective structure for microwave and millimeter wave applications.
Implementation Method 1
an electromagnetically reflective structure comprising an electrically conductive structure and a plurality of electrically conductive electromagnetic reflectors
Data Source
AI summary
An electromagnetic device includes: an electromagnetically reflective structure having an electrically conductive structure and a plurality of electrically conductive electromagnetic reflectors that are integrally formed with or are in electrical communication with the electrically conductive structure; wherein the plurality of reflectors are disposed relative to each other in an ordered arrangement; and, wherein each reflector of the plurality of reflectors forms a wall that defines and at least partially circumscribes a recess having an electrically conductive base that forms part of or is in electrical communication with the electrically conductive structure.