Wireless medical device with a complementary split ring resonator arrangement for suppression of electromagnetic interference
First Claim
1. A medical device comprising:
- a housing;
a radio frequency (RF) communication module to process RF signals associated with operation of the medical device, the RF signals having a nominal transmission frequency;
an RF antenna associated with the RF communication module, the RF antenna integrally formed with the housing;
a physically distinct microstrip transmission component coupled between the RF communication module and the RF antenna, the microstrip transmission component comprising;
a dielectric substrate having an upper major surface and a lower major surface opposite the upper major surface;
an electrically conductive signal trace formed overlying the upper major surface;
an electrically conductive ground plane formed overlying the lower major surface; and
a complementary split ring resonator (CSRR) arrangement integrally formed in the electrically conductive ground plane, and having a layout and dimensions tuned to cause the CSRR arrangement to resonate at a harmonic frequency of the nominal transmission frequency.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device as described herein includes a communication module to process radio frequency signals associated with operation of the medical device, an antenna associated with the communication module, and a microstrip transmission component coupled between the communication module and the antenna. The transmission component includes a dielectric substrate, an electrically conductive signal trace formed overlying the upper major surface of the substrate, an electrically conductive ground plane formed overlying the lower major surface of the substrate, and a complementary split ring resonator arrangement integrally formed in the ground plane, and having a layout and dimensions tuned to cause the resonator arrangement to resonate at one or more harmonic frequencies of the nominal transmission frequency of the radio frequency signals.
240 Citations
20 Claims
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1. A medical device comprising:
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a housing; a radio frequency (RF) communication module to process RF signals associated with operation of the medical device, the RF signals having a nominal transmission frequency; an RF antenna associated with the RF communication module, the RF antenna integrally formed with the housing; a physically distinct microstrip transmission component coupled between the RF communication module and the RF antenna, the microstrip transmission component comprising; a dielectric substrate having an upper major surface and a lower major surface opposite the upper major surface; an electrically conductive signal trace formed overlying the upper major surface; an electrically conductive ground plane formed overlying the lower major surface; and a complementary split ring resonator (CSRR) arrangement integrally formed in the electrically conductive ground plane, and having a layout and dimensions tuned to cause the CSRR arrangement to resonate at a harmonic frequency of the nominal transmission frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A medical fluid infusion device comprising:
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a housing; a radio frequency (RF) communication module to process RF signals associated with operation of the medical device, the RF signals having a nominal transmission frequency; an RF antenna associated with the RF communication module, the RF antenna integrally formed with the housing; a physically distinct microstrip transmission component coupled between the RF communication module and the RF antenna, the microstrip transmission component comprising; a dielectric substrate having an upper major surface and a lower major surface opposite the upper major surface; an electrically conductive signal trace formed overlying the upper major surface; and an electrically conductive ground plane formed overlying the lower major surface; and a complementary split ring resonator (CSRR) arrangement for the microstrip transmission component, the CSRR arrangement having a layout and dimensions tuned to cause the CSRR arrangement to suppress a harmonic frequency component of the nominal transmission frequency of the RF signals. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A medical device comprising:
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a housing; a radio frequency (RF) communication module to process RF signals associated with operation of the medical device, the RF signals having a nominal transmission frequency; an RF antenna associated with the RF communication module, the RF antenna integrally formed with the housing; a physically distinct microstrip transmission component coupled between the RF communication module and the RF antenna, the microstrip transmission component comprising; a dielectric substrate having an upper major surface and a lower major surface opposite the upper major surface; an electrically conductive signal trace formed on the upper major surface; and a layer of electrically conductive material formed on the lower major surface, the layer of electrically conductive material comprising voids formed therein to define a complementary split ring resonator (CSRR) arrangement having a layout and dimensions tuned to cause the CSRR arrangement to resonate at a harmonic frequency of the nominal transmission frequency. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification