Array Antenna Segmented Plates High-Frequency Stability
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Solution Overview
Problem
Existing antennas face challenges in manufacturing precision and stability, particularly at high frequencies like 70-80 GHz, due to complex structures and mechanical instability, which affects radiation characteristics and economic production.
Innovation Solution
A three-plate layered antenna design with a central plate of high mechanical stability and simple geometry, made from materials like metals or high-modulus plastics, connected to rear and front plates with reduced structural influence, allowing for precise assembly and uniform contact through soldering or welding, and featuring a distribution tree for efficient signal distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a complex multi-layer structure with many openings and distribution trees is used, then the antenna gain and directivity are improved, but the manufacturing precision and mechanical stability deteriorate
Solution Approach 1:
The antenna is divided into three separate plates (first plate with distribution tree, second plate with openings, third plate as diffuser) that can be manufactured independently and then assembled. This segmentation allows each plate to be optimized for its specific function while maintaining manufacturing precision, avoiding the need to manufacture a single complex multi-layer structure with all features integrated.
2Power
If a complex multi-layer structure with many openings and distribution trees is used, then the antenna gain and directivity are improved, but the mechanical stability deteriorates
Solution Approach 1:
By separating the antenna into three stable plates connected by connection elements, the mechanical stability is maintained while still achieving the required antenna gain. The connection elements provide structural support between plates, preventing deformation that would occur in a single complex structure with many openings and fissures.
Solution Approach 2:
The antenna uses composite construction with metal plates and plastic connection elements. This combination allows the plates to maintain mechanical stability and electrical conductivity, while the connection elements provide structural support. The composite structure achieves both high mechanical stability and the required radiation properties.
3Reliability
If the plates are joined by soldering or welding, then the electrical conductivity is improved, but the manufacturing complexity increases
Solution Approach 1:
The plates are provided with pre-formed connection elements (such as soldering pads or welding contacts) during manufacturing, so that the electrical connection can be easily established during assembly. This preliminary preparation simplifies the joining process while ensuring reliable electrical conductivity between plates.
4Adaptability or versatility
If a regular arrangement of openings with chamber-like depressions is used, then the bandwidth is improved, but the device complexity increases
Solution Approach 1:
The complex pattern of openings and chamber-like depressions is distributed across three separate plates rather than being integrated into a single structure. The first plate contains the distribution tree, the second plate contains the regular arrangement of openings for bandwidth enhancement, and the third plate contains the diffuser structure. This segmentation reduces device complexity while maintaining the bandwidth improvements.
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 design achieves improved radiation properties, increased mechanical stability, and simplified manufacturing, enabling a large bandwidth and high antenna gain suitable for the E-band frequencies with reduced alignment time and robustness against external influences.
Implementation Method 1
A second plate (3) arranged in the middle has, in two plane-parallel side faces (5, 6), continuous first openings (7) which connect the two plane-parallel surfaces (5, 6) to one another and are used to conduct and transmit the signal to be radiated to the third plate (4) arranged on the front side
Implementation Method 2
The forwardly disposed third panel has second openings operatively connected to the first openings
Implementation Method 3
The plates are joined together by soldering or welding
Implementation Method 4
The plates are joined together by soldering or welding
Data Source
Figure 1~3
Figure 4~5
Figure 6
AI summary
The invention relates to an array antenna (1), comprising a first plate (2), which has means for distributing an electromagnetic signal to be emitted by the array antenna (1), a second plate (3), which has first openings (7) for conducting the electromagnetic signal to be emitted therethrough, and a third plate (4), which has means (12) used to emit the electromagnetic signal. The second plate (3) is arranged between the first plate and the third plate (2, 4) and is operatively connected to same. The second plate (3) has substantially plane-parallel, smooth lateral surfaces (5, 6), in which the first openings (7) are arranged.