Differential Line design rules from PCB Wiring Card Cloning

When applying the strip line layout for Pcb wiring card cloning, signal will be clamped between the FR-4 materials, in the micro-strip, the copper conductor is exposed in the air. Since the minimum level of dielectric constant of the air is Er=1, so layout the critical signal lines on the top layer by the technique of circuit card duplication is most applicable, such as the time clock signal, or high frequency SERial-DESerial signal.

Micro-line must decouple with the beneath ground layer, and the ground plane can decrease the electro-magnetic interference from absorb part of the electro-magnetic field. In the strip line, all of the electronic magnetic field decoupling to the reference plane on the upside and downside, which can effectively and greatly decrease the electro-magnetic interference.

If it is possible, designer should not use the wide width strap line to layout the PCB. Since this structure can easily to be affected by the differential noise from the reference surface. Besides, the balance of Pcb wiring card manufacturing is another difficult subject to control, all in all, control the line space on the same layer is easier.

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Products range from simple cables and printed circuit card assemblies (through hole and automated SMT) to large scale systems that employ numerous complex units.

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Long Term agreements exist (since 2004) with Sunshine Aerospace for “Black boxes” used on Boeing and Aero spatial aircraft. Some of these products were also designed by Circuit Engineering Co.,Ltd..
Circuit Engineering Co.,Ltd. Systems electronic contract manufacturing is set apart form other firms because of its attention to detail. All efforts are reviewed by engineering. Discrepancies in manufacturing data are found and problems corrected before the product is built. This approach has produced customer commendations and loyalty. Every product is our product whether the customer or our name goes on it.

Working from schematics, or less than complete data, is regarded as challenge and not an impossible task as it is by some.

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