Reduction of Truncation Errors in Planar, Cylindrical, and Partial Spherical Near-Field Antenna Measurements

Table 2

Parameters of the simulated models.

Model	Measurement setup	Sampling spacing	Measurement interval	Aperture size	Phase excitation	Main beam direction	Radiation pattern
I	PNF measurement	Δ𝑥=0.5𝜆	𝑥=−0.9⋯0.9 m	8𝜆×8𝜆	Uniform	𝜃=0∘
		Δ𝑦=0.5𝜆	𝑦=−0.9⋯0.9 m
II	CNF measurement	Δ𝑧=0.5𝜆	𝑧=−1.25⋯1.25 m
		Δ𝜙=2∘	𝜙=0∘⋯359∘
III	SNF measurement with polar truncation	Δ𝜃=2∘; Δϕ = 2°	𝜃=0∘⋯30∘; 𝜙=0∘⋯359∘
IV	SNF measurement with spherical ring truncation	Δ𝜃=2∘; Δ𝜙=2∘	𝜃=20∘⋯50∘; 𝜙=0∘⋯359∘	8𝜆×8𝜆	Progressive	𝜃=35∘; 𝜙=180∘
V	SNF measurement with sectorial truncation	Δ𝜃=2∘; Δ𝜙=2∘	𝜃=20∘⋯50∘; 𝜙=150∘⋯210∘
VI	SNF measurement with azimuthal truncation	Δ𝜃=2∘; Δ𝜙=2∘	𝜃=0∘⋯90∘; 𝜙=130∘⋯230∘	4𝜆×16𝜆	Progressive	𝜃=30∘; 𝜙=180∘