Method and apparatus for the suppression of far-field interferen

Details Method and apparatus for the suppression of far-field interferen Method and apparatus for the suppression of far-field interferen

1995-07-24

1997-05-20

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

128903, 607 32, A61N 137

Patent

active

056308353

ABSTRACT:
An electronic device for non-invasively communicating with an implanted device, such as, for example, a cardiac pacemaker. The electronic programming device includes a transceiver having an antenna, a transmitter portion and a receiver portion. The antenna portion is arranged to have two coils arranged in series phase opposition to suppress the effects of far-field interference signals on received near-field signals from the implanted device, when the transceiver is receiving data from the implanted device. The electronic device further includes means to isolate the transmit and receive functions thereof to prevent cancellation of the transmitted signal when the transceiver is in the transmit mode.

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