Aerial systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 1, 1990
Grant Date -
N/A
app pub date -
Nov 27, 1987
filing date -
Feb 6, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an inductive communication system (11) in which transmit (16) and receive (18) aerials are in communication with a transponder (40), one of the aerials, e.g. the receive aerial (18), is arranged in two parts (61,62), one of the parts (61) being closely mutually-inductively coupled to the transmit aerial, and the other part being remote from the transmit aerial, so that the interference signal received by the receive aerial from the transmit aerial is substantially cancelled by the mutually inductive coupling. The two parts (61,62) are preferably parts of a single continuous conductor. Alternatively one of the parts may form a tapped coil with the other aerials. The aerials may be coaxial and/or coplanar.
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