Metamaterial Antenna Array Aperture Layer Design
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Solution Overview
Problem
Current wireless transmission systems, such as radar and cellular communications, face challenges in achieving increased bandwidth, finer control, and extended range while maintaining a compact antenna footprint, which is constrained by traditional antenna designs.
Innovation Solution
The use of a lattice array of radiating elements with a feed structure that distributes transmission signals through a transmission array, incorporating meta-structure unit cells and metamaterials, allows for phase shifting and beam steering in multiple dimensions, enabling efficient signal propagation and reduced distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional antenna designs are used, then the antenna footprint is constrained, but the bandwidth and control capabilities are insufficient
Solution Approach 1:
The antenna is divided into multiple radiating elements arranged in a grid pattern, where each element can be independently controlled. This segmentation allows the antenna to achieve higher bandwidth and control capabilities while maintaining a compact overall footprint, as the distributed elements work together to provide enhanced functionality without requiring a large single-element structure.
Solution Approach 2:
The patent transitions from traditional two-dimensional antenna arrangements to a three-dimensional volumetric structure with radiating elements distributed in multiple layers. This dimensional expansion enables increased bandwidth and control capabilities by utilizing spatial distribution in the third dimension, while the projected footprint remains compact when viewed from above.
2Area of stationary object
If the antenna footprint is reduced, then the system becomes more compact, but the transmission range and control precision deteriorate
Solution Approach 1:
By segmenting the antenna into multiple independently controllable radiating elements, the system achieves precise control over each element's radiation pattern. This enables the compact antenna to maintain transmission range and precision through coherent combining of signals from all elements, effectively overcoming the limitations of reduced physical size.
Solution Approach 2:
The patent employs electronic control to dynamically adjust parameters such as phase, amplitude, and frequency for each radiating element. This parameter control allows the compact antenna array to achieve extended transmission range and precise beam steering by coordinating the radiation from multiple elements, compensating for the reduced individual element size.
3Adaptability or versatility
If multiple layers of radiating elements are used, then signal distribution and directivity improve, but the device complexity increases
Solution Approach 1:
The multi-layer antenna structure is segmented into discrete radiating elements with dedicated feed structures. Each element and layer can be independently designed and controlled, allowing for optimized signal distribution and directivity. The modular segmented approach manages complexity by enabling independent optimization of each segment while achieving superior overall performance through their coordinated operation.
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 approach enables advanced radar and communication systems with improved directivity, reduced side lobes, and the capability for fast scanning of up to 360°, supporting autonomous driving and all-weather object detection with enhanced sensor performance.
Implementation Method 1
allows for phase shifting and beam steering in multiple dimensions
Implementation Method 2
allows for phase shifting and beam steering in multiple dimensions
Implementation Method 3
incorporating meta-structure unit cells and metamaterials, allows for phase shifting and beam steering in multiple dimensions
Data Source
AI summary
The present disclosures provide methods and apparatuses for a metamaterial antenna structure having a plurality of super elements of slotted transmission lines. The metamaterial antenna structure has an aperture structure with apertures positioned in a specific orientation relative to a centerline of the aperture structure and configured to propagate transmission signals from a distributed feed network through the apertures. The metamaterial antenna structure also has a transmission array structure comprising a plurality of transmission lines coupled to the aperture structure and configured to propagate the transmission signals from the aperture structure through one or more slots in the transmission array structure, in which the apertures of the aperture structure are interposed between the slots. The metamaterial antenna structure also has a radiating array structure coupled to the transmission array structure and configured to radiate the transmission signals from the transmission array structure.