US Patent 7914302 High frequency electrical connector

An electrical connector assembly has an elongated insulative housing and a plurality of signal contacts secured in corresponding passageways defined in the housing. Each signal contact has a retention portion retained in the passageway, a contact portion extending from the retention portion and a soldering portion extending from the retention portion. The contact portion defines a first face exposing an exterior of the passageways and a second face opposite to the first face. Wherein each of signal contacts defines a recess on the second face. The signal contacts become thinner so as to prevent signal contacts from crosstalk and improve high frequency performance.