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Embedded Filter for Printed Circuit Boards

IP.com Disclosure Number: IPCOM000110212D
Original Publication Date: 1992-Oct-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 1 page(s) / 47K

Publishing Venue

IBM

Related People

Siverling, MM: AUTHOR

Abstract

Disclosed is a packaging configuration that embodies the following:

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Embedded Filter for Printed Circuit Boards

      Disclosed is a packaging configuration that embodies the
following:

      A small bulk capacitor C1, having good high frequency
characteristics, mounted in the close proximity to the power input
'b' of an electronic module.  One end of the capacitor being
terminated in the "ground" or "power return plane" in the near
vicinity 'g' of the module's power return connection.

      A low impedance connection between the capacitor's remaining
lead 'd' and the module's power lead 'b' such that the module may
draw electrical energy at high frequencies from the capacitor.

      A lead extending from the capacitor connection 'd' to the power
plane of the printed circuit card 'e'.  The impedance in that lead
and the relative placement of the leads being such that the module
will more preferentially draw its high frequency energy from the
capacitor than it would if this relative impedance configuration were
not present (see the figure).

      Disclosed anonymously.