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US 7,407,415 B2Granted
Crosstalk reduction in dual inline memory module (DIMM) connectors
AssigneeInternational Business Machines Corporation
InventorsLei Shan, Jiali Wu
Life of this patent
Estimating the term…
Abstract
A DIMM connector having reduced crosstalk includes ceramic particles having a high dielectric constant and/or composite fibers mixed into materials used for fabricating a connector housing of the DIMM connector.
Claims1
A method for fabricating a DIMM connector, comprising:
- assembling a plurality of pins adapted for coupling to circuit components, wherein the pins provide for communicating input and output signals with the circuit components;
- mixing high dielectric constant ceramic particles comprising a one of a mono-modal distribution of particle sizes, a bi-modal distribution of particle sizes and a multi-modal distribution of particle sizes having a diameter ranging from in the nanometers to in the micrometers and composite fibers within material for jacketing at least a portion of each of the pins in the plurality;
- wherein a quantity of the ceramic particles is adjusted to control a dielectric constant for a housing of the connector, according to a formula
- ɛ
- =
- [
- ɛ
- 1
- 1
- /
- 3
- +
- v
- 2
-
- (
- ɛ
- 2
- 1
- /
- 3
- -
- ɛ
- 1
- 1
- /
- 3
- )
- ]
- 3
- where
- ∈ represents a dielectric constant for the connector housing
- ∈1 represents a dielectric constant of the material,
- ∈2 represents a dielectric constant of the ceramic particles;
- and
- ν2 represents a volume fraction of the ceramic particles in the material;
- and,
- jacketing circuit components and the at least a portion of pins for the DIMM connector with the mix of particles and material to form the connector housing.
35 more elements
Dependencies are inferred from the claim text.