ON Semiconductor AND9670/D Quick Start Manual page 9

RFID Reader Antenna in V−Plane
The picture below shows the optimum tag reading area with the vertical mounted whip antenna.
The first blue area the tag is positioned in the horizontal plane that means orthogonal to the vertical mounted whip antenne,
the second reading area in red, the tag is in the vertical position as the mounted whip antenna.
In this setup, the max reading distance of the tag is about 60 cm in x−axis direction.
The blue reading area shows similar shape as in the horizontal mounted whip antenna above while the tag in the vertical
position shows omni−directional shape. The tag position in the y−axis with max 42 cm is better than x−axis direction.
AND9670/D
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Figure 11. Top View of Tag Reading Area in V−Plane Position
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