Tilted antenna
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United States of America Patent
Stats
-
Dec 28, 1993
Grant Date -
N/A
app pub date -
Jan 8, 1992
filing date -
Jan 9, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A novel antenna system disposed around a conveyor belt for the interrogation of objects passing through the antenna which overcomes centralized dead zone problems is disclosed. A frame antenna is disposed around a conveyor belt and is tilted to form, for example, a 30 deg. angle with the vertical longitudinal plane of the conveyor belt, which is perpendicular to the horizontal plane within which the conveyor belt lies, and a 30 deg. angle with the transverse axis of the conveyor belt. In this way, a 'dead-zone' free read area is formed to facilitate the read of a transponder oriented in any manner as it moves along the conveyor belt.
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