Browse Prior Art Database

HIGH-DENSITY PCB LAYOUT FOR ISOLATION OF ELECTRICALLY SENSITIVE TRACES

IP.com Disclosure Number: IPCOM000008111D
Original Publication Date: 1997-Mar-01
Included in the Prior Art Database: 2002-May-20

Publishing Venue

Motorola

Related People

Authors:
Daniel R. Sommers Bob Uskali

Abstract

Certain types of circuits (e.g. crystal oscillators, antennas, RF receivers, audio amplifiers, etc.) are extremely sensitive to the electrical and electro- mechanical disturbances generated by electrical systems that switch relatively large amounts of power at high frequencies (esp. digital systems). Another characteristic of these types of sensitive circuits is that they are also sensitive to parasitic coupling within their host environment (e.g. capaci- tive coupling to neighboring traces). The ever- increasing levels of system integration is driving more and more mutually hostile circuitry into close proximity. This invention is an easily implemented shielding (aka. isolation) method for sensitive cir- cuitry that has reduced parasitic effects on the circuitry which it shields.