Circular Array Antenna for Environmental Immunity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing orbital angular momentum (OAM) mode antennas are susceptible to environmental factors like wind, rainfall, and snowfall due to their 3D structure, which affects their performance in high-speed data transmission systems.
Innovation Solution
A 2D plane structure circular array antenna is designed with a primary feeder at its center, radially connected secondary feeders, patch units generating radial electric fields, and length controllers to ensure consistent electric field directions, making it immune to environmental influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a 3D structure antenna is used to generate OAM mode, then the antenna can be constructed with metallic reflection plates and exciton elements, but it becomes susceptible to wind, rainfall, and snowfall
Solution Approach 1:
The patent transitions from a 3D structure antenna to a 2D planar array antenna configuration. The circular array is arranged in a single plane with multiple radiating elements positioned at different angular positions around a central axis, eliminating the need for three-dimensional metallic reflection plates and exciton elements while maintaining OAM mode generation capability.
Solution Approach 2:
The patent replaces the mechanical 3D metallic reflection plate structure with an electromagnetic field-based planar array system. Instead of using physical metallic surfaces to reflect and shape waves in three dimensions, the invention uses controlled current distributions across planar radiating elements to generate the required orbital angular momentum modes through electromagnetic field interactions.
2Object-affected harmful factors
If a 2D plane structure antenna is designed to eliminate environmental influence, then reliability is improved, but the complexity of achieving consistent electric field directions increases
Solution Approach 1:
The patent employs adjustable impedance elements and variable phase shifters at each radiating element position to dynamically control the amplitude and phase of currents fed to individual elements. This dynamic control capability allows the system to maintain consistent electric field directions and achieve the desired OAM mode patterns while adapting to different operating conditions.
Solution Approach 2:
The patent utilizes adjustable electrical parameters including impedance values, phase shifts, and current amplitudes at each radiating element to control the overall antenna radiation pattern. By varying these parameters, the system achieves consistent electric field directions and generates the required orbital angular momentum modes without requiring complex mechanical adjustments.
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 antenna generates an orbital angular momentum mode radiation pattern that is not affected by wind, rainfall, or snowfall, ensuring reliable high-speed data transmission.
Implementation Method 1
a plurality of patch units connected to the respective secondary feeders to generate an electric field radially
Implementation Method 2
an input/output unit receiving electromagnetic waves from a transmitter and distributing the received electromagnetic waves to the antenna
Data Source
AI summary
Disclosed is a circular array antenna. The circular array antenna includes: an input/output unit receiving electromagnetic waves from a transmitter and distributing the received electromagnetic waves to the antenna; a primary feeder connected with the input/output unit and placed at the center of the circular array antenna; a plurality of secondary feeders radially connected to the primary feeder; a plurality of patch units connected to the respective secondary feeders to generate an electric field radially; and a plurality of length controllers formed at terminals of the respective secondary feeders in a direction to extend the lengths of the respective secondary feeders, of which the lengths are controllable.