Communications: radio wave antennas – Antennas – Including magnetic material
Patent
1998-03-04
2000-04-18
Wong, Don
Communications: radio wave antennas
Antennas
Including magnetic material
343718, 343728, 343895, H01Q 708
Patent
active
060520973
ABSTRACT:
An improved antenna system for a collar-mounted receiver-stimulator unit of an electronic animal training apparatus includes a conductive antenna mounting connector for detachable connection of an external flex antenna to the receiver-stimulator unit, a ferrite core, and a first winding on the ferrite core is coupled to a receiver circuit of the receiver-stimulator unit, and constitutes an internal ferrite antenna thereof. A second winding on the ferrite core is connected to the antenna mounting conductor and coacts with the first winding to function as a matching transformer between a receiver antenna input terminal and an external high flex antenna connected to the antenna mounting connector. The longitudinal axis of the ferrite core is co-planar with a longitudinal axis of the flex antenna.
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Duncan Timothy T.
Kurimsky Paul A.
Napolez Fransisco J.
Nguyen Hoang
Tri-Tronics Inc.
Wong Don
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