Radar Antenna Arrangement Hexagonal Grid Non-Overlap
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radar antenna arrangements with multiple transmitting and receiving elements lack optimal angular resolution and directional independence due to overlapping elements, which affects their electronic swiveling capability and imaging properties.
Innovation Solution
The transmitting and receiving elements are arranged without overlap on a regularly hexagonally parqueted surface, forming virtual antenna elements through geometric convolution, with designs incorporating rotational symmetry and specific groupings to maximize aperture and angular resolution, ensuring minimal distances and constructional advantages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If transmitting elements and receiving elements are arranged in overlapping positions on the antenna surface, then the number of virtual antenna elements increases, but the angular resolution and electronic swiveling capability deteriorate due to element collisions and position ambiguities
Solution Approach 1:
The antenna surface is segmented into distinct transmitting element positions and receiving element positions, preventing overlap. Each element type occupies its own designated fields on the hexagonal grid, ensuring spatial separation while maintaining maximum virtual element generation through controlled non-overlapping arrangement.
Solution Approach 2:
The problem is solved by utilizing the two-dimensional hexagonal grid structure to arrange elements such that transmitting and receiving elements occupy different position sets within the same plane. The geometric convolution of these non-overlapping position sets generates the virtual antenna array in a mathematical dimension, achieving high virtual element count without physical overlap.
2Measurement precision
If transmitting elements and receiving elements are arranged with minimal spacing to maximize aperture, then the angular resolution improves, but constructional complexity increases due to electrical contacting difficulties
Solution Approach 1:
The hexagonal grid provides locally optimized spacing where each element maintains appropriate distance from others. The regular hexagonal structure ensures uniform minimum distances between adjacent elements, balancing aperture maximization with electrical isolation, thereby simplifying contacting requirements while maintaining high angular resolution.
3Measurement precision
If elements are arranged without rotational symmetry to maximize aperture area, then the angular resolution improves, but directional independence deteriorates
Solution Approach 1:
The patent employs rotational symmetry (60° or 120°) in the element arrangement to ensure directional independence and isotropic radiation patterns. This symmetric configuration within the hexagonal grid framework allows the antenna to perform equally well in all directions, making the radar system adaptable to targets at any azimuth while maintaining high angular resolution through the overall aperture.
Data Source
AI summary
A radar antenna arrangement includes a plurality of transmitting elements and with a plurality of receiving elements. The transmitting elements are arranged in a transmitting arrangement and the receiving elements are arranged in a receiving arrangement, in each case in fields of a regularly hexagonally parqueted surface. An associated virtual antenna arrangement of virtual antenna elements results from the geometrical convolution of the transmitting arrangement with the receiving arrangement. High angular resolution and good alignability with good directional independence can be achieved by arranging the receiving elements in the receiving arrangement and the transmitting elements in the transmitting arrangement so that the virtual antenna elements in the virtual antenna arrangement are arranged without overlap.