Electrical connector suitable for transmitting a high-frequency signal

An electrical connector for electrically connecting a first connection object and a second connection object through a plurality of contacts held by a housing;

• the contacts including a plurality of pairs of first signal contacts, a plurality of pairs of second signal contacts, a plurality of first ground contacts, and a plurality of second ground contacts;
• each of the first and the second signal contacts and the first and the second ground contacts having a first contacting portion to be contacted with a contact of the first connection object and a second contacting portion to be contacted with a contact of the second connection object;
• the housing comprising a front housing in which the first contacting portions are disposed and which is adapted to receive the first connection object and a rear housing in which the second contacting portions are disposed and which is adapted to receive the second connection object;
• the first contacting portions of the pair of first signal contacts and the first contacting portion of the first ground contact being alternatively arranged in parallel in a first row extending in a widthwise direction perpendicular to an insert/remove direction of the first connection object;
• the first contacting portions of the pair of second signal contacts and the first contacting portion of the second ground contact being alternatively arranged in parallel in a second row extending in the widthwise direction;
• the first contacting portions of the pair of first signal contacts in the first row being faced to the first contacting portion of the second ground contact in the second row in a vertical direction perpendicular to the insert/remove direction of the first connection object and the widthwise direction;
• the first contacting portions of the pair of second signal contacts in the second row being faced to the first contacting portion of the first ground contact in the first row in the vertical direction;
• the second contacting portions of the pair of first signal contacts, the second contacting portion of the first ground contact, the second contacting portions of the pair of second signal contacts, and the second contacting portion of the other first ground contact being arranged in parallel in this order in a third row extending in the widthwise direction;
• the second contacting portions of the second ground contacts being arranged in parallel in a fourth row extending in the widthwise direction, so as to contact to a solid ground conductor layer thickly formed on a surface of the second connection object;
• the second contacting portions of the pair of first signal contacts and the second contacting portions of the pair of second signal contacts in the third row being faced to the second contacting portions of the second ground contacts through the solid ground conductor layer in the fourth row in the vertical direction.