Inverted E antenna with capacitance loading for use with an implantable medical device
US9048541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2012 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Dec 15, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/37229
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The device includes radio frequency (RF) communication components installed within a case of the device and an antenna with an inverted E shape mounted within a header of the device. The antenna has three branches extending from a main horizontal arm: a capacitive branch connecting one end of the main arm to the case via a capacitive load; an RF signal feed branch connecting a middle portion of the main arm to the internal RF components of the device via a feedthrough; and an inductive branch connecting the opposing (far) end of the main arm to the case to provide a shunt to ground. The E-shaped configuration and the provision of capacitive loading allows for cancellation of inductance to bring the antenna into resonance and to provide optimal radiation efficiency as well as to provide for impedance with no reactive component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.