Antenna device and measurement method
AssigneeAnritsu Corporation
InventorHanako Noda
Life of this patent
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Abstract
Provided is an antenna device used for evaluating a transmission characteristic or a reception characteristic of equipment under test (EUT) having an array antenna that includes a plurality of antenna elements arranged in a plane at predetermined intervals. The antenna device includes an antenna for receiving a modulated signal radiated by the EUT via the array antenna or radiating a modulated signal to the array antenna. The antenna is disposed at a position on a z-axis perpendicular to the plane defined by the plurality of antenna elements such that a group delay distortion of the modulated signal is reduced in a near-field region.
Claims20
An antenna device used for evaluating a transmission characteristic or a reception characteristic of equipment under test (EUT) having an array antenna that comprises a plurality of antenna elements arranged in a plane at predetermined intervals, the antenna device comprising
- an antenna for receiving a modulated signal radiated by the EUT via the array antenna or radiating the modulated signal to the array antenna,
- wherein the antenna is disposed at a position on a z-axis perpendicular to the plane defined by the plurality of antenna elements such that a group delay distortion of the modulated signal is reduced in a near-field region.
A measurement method used for evaluating a transmission characteristic or a reception characteristic of equipment under test (EUT) having an array antenna that comprises a plurality of antenna elements arranged in a plane at predetermined intervals, the measurement method comprising:
- a step in which an antenna receives a modulated signal radiated by the EUT via the array antenna or radiates the modulated signal from the antenna to the array antenna,
- a movement step of moving the antenna in a z-axis direction perpendicular to the plane defined by the plurality of antenna elements, and
- during the movement step, a control step of controlling such that the antenna is moved to a position where a group delay distortion of the modulated signal is reduced in a near-field region.
Dependencies are inferred from the claim text.