Measurement Guideline of Fresnel-Field Antenna Measurement Method

ETRI Journal

关键词: Fresnel region;    Fresnel field;    Antenna measurement;   

Others  :  1185855
DOI  :  10.4218/etrij.09.0208.0235

【 摘 要 】

In this letter, a parametric analysis of the Fresnel-field antenna measurement method is performed for a square aperture. As a result, the optimum number of Fresnel fields for one far-field point is guided as M_opt=N_opt=D²/λR+5, where D is the antenna diameter, λ is the wavelength, and R is the distance between the source antenna and the antenna under test. For the aperture size 5≤L_x/λ≤20, the tolerable distances for gain errors of 0.5 dB and 0.2 dB can be guided as R_{0.5 dB}≈ 1.2L_x/λ and R_{0.2 dB}≈ 2.0L_x/λ, where L_x is the lateral length of the square aperture. The tolerable distances for 20≤L_x/λ≤200 are also proposed. This measurement guideline can be fully utilized when performing the Fresnel-field antenna measurement method.antenna measurement method.

   

【 参考文献 】

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