一种基于先验口面相位分布的天线增益外推方法
By improving the extrapolation method and using the prior phase distribution of the aperture to select a suitable model and fitting coefficients, the accuracy and robustness problems of antenna gain measurement in a small anechoic chamber were solved, and high-precision antenna gain measurement was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG UNIV
- Filing Date
- 2023-09-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing antenna gain measurement methods are not effective in small-scale anechoic chambers, and traditional extrapolation methods suffer from low fitting accuracy and redundant polynomials on electrically large antennas.
An improved extrapolation method based on prior aperture phase distribution is adopted. By judging the aperture phase distribution of the antenna under test, a suitable extrapolation model is selected, and the fitting coefficient is obtained by using the least squares method. The gain is calculated by combining the Fries transmission formula.
It improves the accuracy and robustness of antenna gain measurement, is applicable to various antenna models, reduces redundant polynomials, and enhances measurement accuracy under anechoic conditions.
Smart Images
Figure CN117233481B_ABST