Radome Electrical Performance Evaluation Without Digital Models
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Solution Overview
Problem
Current methods for evaluating the electrical performance of a radome are limited by the need for precise digital models of antennas, which are often unavailable or too complex, leading to inaccurate calculations, especially for complex antenna systems.
Innovation Solution
A method and device that obtain electromagnetic parameter information of the antenna and radome, calculate far-field information, and then determine electrical performance parameters without relying on precise digital models, using near-field measurements and split facet information to ensure accurate calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If physical optics algorithm with full-wave simulation is used to calculate near-zone field, then electrical performance can be evaluated, but measurement precision deteriorates when antenna digital model is unavailable or complex
Solution Approach 1:
The patent introduces an intermediary verification process using near-field measurement data to validate the antenna aperture surface electric field information. This intermediary step bridges the gap between unavailable/complex digital models and accurate performance evaluation, allowing the method to work with measured data when models are insufficient while maintaining high precision through cross-validation with far-field measurements.
2Productivity
If antenna digital model is simplified for full-wave simulation, then calculation can be performed, but manufacturing precision deteriorates due to model simplification
Solution Approach 1:
The patent applies partial action by using simplified models only when necessary for initial calculations, while incorporating actual measurement data to compensate for simplification errors. The method selectively uses full-wave simulation results where available and supplements with empirical measurements, achieving both computational efficiency and high precision without requiring complete model fidelity.
3Ease of operation
If approximate modeling is used when antenna digital model is unavailable, then evaluation can proceed, but measurement precision deteriorates
Solution Approach 1:
The patent implements feedback by comparing calculated far-field information from approximate models with actual far-field measurement data. This feedback loop allows the method to identify and correct errors introduced by approximate modeling, significantly improving the precision of electric field information and electrical performance evaluation while maintaining operational availability.
Data Source
AI summary
Method and device for evaluating the electrical performance of an antenna cover. The method for evaluating the electrical performance of the antenna cover comprises: acquiring electromagnetic parameter information of an antenna and parameter information of an antenna cover; calculating far-field information of the antenna and far-field information of an antenna system on the basis of the electromagnetic parameter information of the antenna and of the parameter information of the antenna cover; and calculating electrical performance parameter information of the antenna cover on the basis of the far-field information of the antenna and of the far-field information of the antenna system. By means of the actual measurement of the electromagnetic parameter information of the antenna and of the parameter information of the antenna cover, the calculation of the far-field information of the antenna and of the far-field information of the antenna system, and the electrical performance parameter information of the antenna cover thus produced, without relying on a precise digital model of the antenna or when the antenna system is of increased complexity, calculation precision is ensured, the operability of the evaluation of the electrical performance of the antenna cover is greatly increased, and calculation precision is effectively increased.