Cardiac Pacemakers, Inc.

Thao N Nguyen

Keith R Maile

Benjamin J Haasl

Ron A Balczewski

David Nghiem

Larry D Canady

Peter Musto

Daniel Joseph Landherr

Niharika Varanasi

Jason Lahr

Katherine Hauwiller

Christopher B Berryman

Mary Jo Mcmillin

Maieta Howze

Thomas Y Kwok

An implantable medical device may include each of a conductive canister, a printed circuit board assembly (PCBA), and a header. A feedthrough and ferrule couple the interior of the canister, where the PCBA is, to one or more elements contained in the header such as an antenna and/or a port for coupling to a lead. The ferrule may be directly attached to the conductive canister and the electronic circuit board. The electronic circuit board carries an RF transmitter for telemetry purposes, and has an RF ground plane layer therein. The ferrule is capacitively coupled to the RF ground plane the PCBA, and has a size and/or shape relative to the RF ground plane that provides sufficient capacitance to offer an improved RF ground plane path to the conductive canister at a desired telemetry frequency.

Implantable medical device with feedthrough antenna ground structure

Apparatus and techniques can include a planar antenna that can include a folded conductive strip portion coupled to a driven node of a wireless communication circuit, the folded conductive strip portion comprising at least two segments laterally offset from each other and at least partially laterally overlapping with each other, and a first region oriented along a first axis in a plane of the planar antenna and a second region oriented along a second axis in the plane of the planar antenna, the two axes and the two regions specified to provide polarization diversity of radiation from the planar antenna. The planar antenna can include a stub coupled to the folded conductive strip portion, the stub configured to provide a first specified operating frequency range at or near resonance using a mode corresponding to a total physical path length along the folded conductive strip portion.

Multi-band multi-polarization stub-tuned antenna

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LAKEVILLE, MN, United States of America

Thao N Nguyen