Patent ID: 10302735

Abstract:
A directional characteristic acquisition unit 51 rotates a wireless terminal 1 that is a measurement target using a terminal holding rotation mechanism 30 centering around a standard point O, measures a field intensity Pr of a radio wave received by the measurement antenna 21 at each rotation angle (ϕ, θ) to calculate a virtual directional characteristic of a terminal antenna 1a in the wireless terminal 1. An error information output unit 60 calculates a reception angle error (ϕ′, θ′), a propagation loss error E1, and a gain error E2 that occur in accordance with rotation of the wireless terminal 1, and corrects a virtual directional characteristic using these errors, using a correction unit 70, to calculate a directional characteristic Hc in a case where it is assumed that the terminal antenna 1a of the wireless terminal 1 is rotated at the position of the standard point O.