Electrical ground plane apparatus

Details Electrical ground plane apparatus Electrical ground plane apparatus

1993-09-30

1996-10-01

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Discharging or preventing accumulation of electric charge

Specific conduction means or dissipator

361784, 361792, 361816, H05F 300

Patent

active

055615848

ABSTRACT:
An electrical ground plane apparatus for a circuit board having an analog section and a digital section where the analog section of the circuit board has distributed thereon analog circuitry, and the digital section has distributed thereon digital circuitry. The analog section further has a connector which connects the analog circuitry to circuitry external to the circuit board. The circuit board is disposed within a chassis, which is operably connected to earth ground. The electrical ground plane apparatus includes an analog ground, a digital ground and a coupling circuit. The digital ground is operably connected to the analog ground at a location proximate the power supply connection and the analog ground is operably connected to the chassis through a coupling circuit. The coupling circuit is located proximate the connector so as to substantially minimize the flow of RF energy into the connector and, in turn, into the external circuitry.

REFERENCES:
patent: 5231308 (1993-07-01), Fisch
patent: 5287008 (1994-02-01), Pahr

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