Chip capacitor electromagnetic interference filter

Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor

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Details

361303, 3613061, 361309, 333182, H01G 435

Patent

active

059598298

ABSTRACT:
An electromagnetic interference (EMI) filter capacitor assembly is provided for shielding and decoupling a conductive terminal pin or lead of the type used, for example, in an implantable medical device against passage of external interference signals. The EMI filter is constructed of relatively inexpensive ceramic chip capacitors which replace relatively expensive feedthrough capacitors as found in the prior art. The chip capacitors are mounted directly onto a hermetic feedthrough terminal in groups of two or more which vary in physical size, dielectric material and capacitance value so that they self-resonate at different frequencies. This "staggering" of resonant frequencies and direct installation at the hermetic terminal provides the EMI filter with sufficient broadband frequency attenuation. In one preferred form, multiple chip capacitor groupings are mounted onto a common base structure, with each capacitor grouping associated with a respective terminal pin. In another preferred form, a non-conductive substrate is provided with metalized circuit traces to better accommodate the mounting of the chip capacitors. Additionally, novel chip capacitor geometry/termination-metallization is provided which significantly reduces the internal inductance of the capacitor to improve its high frequency performance as an EMI filter.

REFERENCES:
patent: 2756375 (1956-07-01), Peck
patent: 3235939 (1966-02-01), Rodriguez et al.
patent: 3617830 (1971-11-01), Perna, Jr.
patent: 3920888 (1975-11-01), Barr
patent: 4083022 (1978-04-01), Nijman
patent: 4148003 (1979-04-01), Colburn et al.
patent: 4152540 (1979-05-01), Duncan et al.
patent: 4220813 (1980-09-01), Kyle
patent: 4247881 (1981-01-01), Coleman
patent: 4314213 (1982-02-01), Wakino
patent: 4352951 (1982-10-01), Kyle
patent: 4362792 (1982-12-01), Bowsky et al.
patent: 4421947 (1983-12-01), Kyle
patent: 4424551 (1984-01-01), Stevenson
patent: 4456786 (1984-06-01), Kyle
patent: 4500159 (1985-02-01), Briones et al.
patent: 4737601 (1988-04-01), Gartzke
patent: 4741710 (1988-05-01), Hogan et al.
patent: 5032692 (1991-07-01), DeVolder
patent: 5070605 (1991-12-01), Daglow et al.
patent: 5333095 (1994-07-01), Stevenson et al.
patent: 5406444 (1995-04-01), Selfried et al.
patent: 5531003 (1996-07-01), Seifried et al.
patent: 5620476 (1997-04-01), Truex et al.
patent: 5650759 (1997-07-01), Hittman et al.
patent: 5735884 (1998-04-01), Thompson et al.
patent: 5759197 (1998-06-01), Sawchuk et al.
Article entitled "Carts '97"; published Mar. 24, 1997; sponsored by The Components Technology Institute, Inc.; 11 pages.

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