Multi-Polarized Radiating Element Layout for Low-Interference Antennas
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Solution Overview
Problem
Current dipole-type dual-polarized antennas face challenges in optimizing structure and size for stable radiating characteristics and ease of design, while minimizing interference between radiating elements, especially in multi-band antennas with limited space.
Innovation Solution
A multi-polarized radiating element with a reflector, featuring first, second, and fourth radiating arms arranged in a four-way symmetrical manner, with a common feeding and grounding structure using stripline transmission lines to reduce element volume and interference, enhancing overall antenna performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a dipole-type dual-polarized antenna structure is used, then the structure for generating two orthogonal polarized waves is easily implemented and the arrangement of the radiating element is easy, but the structure and size optimization for stable radiating characteristics is difficult and interference between radiating elements occurs
Solution Approach 1:
The radiating element is divided into four separate radiating arms (first, second, third, and fourth arms) arranged in a four-way symmetrical manner on the reflector surface. This segmentation allows each arm to be independently optimized for its specific function while maintaining overall symmetry, thereby improving radiating characteristics stability without compromising ease of implementation.
Solution Approach 2:
While maintaining four-way symmetrical arrangement of the radiating arms, the patent introduces asymmetry in the feeding and grounding configuration. The first feeding line connects the first and fourth arms while the second feeding line connects the second and third arms, creating an asymmetric feeding pattern that optimizes polarized wave generation and reduces interference between elements.
2Adaptability or versatility
If multiple radiating elements are installed on the reflector for multi-band operation, then multi-band functionality is achieved, but the space is limited and interference between elements increases
Solution Approach 1:
The radiating element is designed with four radiating arms that can serve multiple functions across different frequency bands. The same four-arm structure with symmetric arrangement can operate in single-band, dual-band, or multi-band configurations, providing universal applicability while minimizing the number of elements needed and reducing interference.
Solution Approach 2:
The radiating arms are arranged in a four-way symmetrical pattern on the two-dimensional reflector surface, utilizing spatial distribution in multiple directions (horizontal and vertical axes). This dimensional arrangement allows efficient use of limited space while maintaining adequate separation between radiating elements to reduce mutual interference.
3Device complexity
If the radiating element structure is simplified for ease of design, then design complexity is reduced, but structure optimization and size reduction are compromised
Solution Approach 1:
The feeding and grounding functions are merged into an integrated feeding line structure. The first feeding line simultaneously provides feeding signal to the first and fourth radiating arms and provides grounding path, while the second feeding line does the same for the second and third arms. This merging simplifies the overall structure and reduces element volume while maintaining design ease.
Solution Approach 2:
The feeding lines are configured to provide equipotential grounding paths. The first feeding line grounds the second and third arms together, while the second feeding line grounds the first and fourth arms together, creating equipotential regions that simplify the grounding structure and reduce the overall element volume without compromising performance.
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 configuration results in a more optimized antenna structure with improved radiating characteristics, reduced signal interference, and simplified design, particularly effective in multi-band antennas by minimizing the influence between radiating elements and optimizing the antenna's size and electrical characteristics.
Implementation Method 1
a first radiating element of a first band installed on the reflector; and at least one second or third radiating element of a second band or a third band installed on the reflector
Implementation Method 2
a common feeding and grounding structure using stripline transmission lines
Implementation Method 3
A multi-polarized radiating element with a reflector
Data Source
Figure 1A~1B
Figure 1C~2
Figure 3~4A
AI summary
A multi-polarized radiating element of the present disclosure includes first, second, third, and fourth radiating arms arranged in a four-way symmetrical manner on a plane; a first feeding line commonly fed to the fourth radiating arm and the first radiating arm, and commonly grounded to the second radiating arm and the third radiating arm; and a second feeding line commonly fed to the first radiating arm and the second radiating arm, and commonly grounded to the third radiating arm and the fourth radiating arm.