Importance

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Abstract

The electrical connector assembly includes a female connector portion which is mountable to a first printed circuit board, such as a motherboard, and a male connector portion which is mechanically and electrically connected to a second printed circuit board, such as a daughterboard. The female connector portion includes a plurality of signal contacts arranged in two rows having a ground terminal, or conductive elastomer, positioned between the rows of signal contacts. The male connector portion preferably includes a flexible circuit having a solid groundplane separated by an dielectric insulator from an electrical trace thereon. The distance separating the groundplane from the trace and the width of the trace controls a characteristic impedance of the flexible circuit for matching to specific circuit requirements of the daughterboard and motherboard. Upon mechanical connection of the male connector portion to the female connector portion, the signal contacts electrically engage the trace on the flexible circuit and the groundplane electrically engages the ground terminal. The specific design of the connector assembly provides a controlled impedance, high signal contact density connector having reduced cross-talk and enhanced signal transmission, even at ultra high (UHF) signal transmission speeds.

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First Claim