A connector having juxtaposed contact modules ( 6 ). In each contact module, signal contacts ( 16 ), a first ground plate ( 14 ), and a second ground plate ( 15 ) are held by an insulator ( 28 ). The first and second ground plates comprise plate sections ( 14 a , 15 a ) each having a first surface and a second surface on the opposite side of the first surface, and the first surfaces face each other. Pairs of protrusions ( 14 b , 15 b ) are formed at intervals on the second surfaces of the plate sections. The first and second ground plates are molded in the insulator and integrated together. The insulator has recesses ( 29 ) corresponding to the intervals of the protrusions and signal contacts are disposed in the recesses.
1. A connector comprising a plurality of mutually juxtaposed contact modules, each of said contact modules comprising:
an insulator;
signal contacts held by said insulator;
a first ground plate held by said insulator; and
a second ground plate held by said insulator;
said first and second ground plates comprising:
plate portions having first surface facing each other and second surfaces on the opposite sides of said first surfaces; and
pairs of protrusions formed at intervals on said second surfaces of said plate portions;
said first and second ground plates being molded-in with said insulator so as to be integrated together;
said insulator having recesses corresponding to the intervals of said protrusions;
said signal contacts being disposed in said recesses.
2. The connector according to claim 1 , wherein each of said protrusions protrudes from said plate portion so as to form a right angle with said second surface.
3. The connector according to claim 1 , wherein positions of the intervals between said protrusions are staggered between said first and second ground plates.
4. A connector according to a claim 1 , wherein, in each of said first and second ground plates, said paired protrusions and a portion of said plate portion corresponding to said interval cooperatively define a generally U shape in section thereof.
5. The connector according to claim 1 , wherein at least one of said first and second ground plates has at least one contact portion for connection to a ground plate included in a mating connector.
6. A connector comprising contact modules, each of said contact modules comprising:
a plurality of signal contacts;
a first ground plate;
a second ground plate; and
an insulator;
each of said ground plates comprising at least one section-generally-U-shaped portion;
said ground plates and said insulator being molded-in so as to be formed integrally with each other such that said section-generally-U-shaped portions face each other alternately at their backs while face outside at their open portions; and
said signal contacts being assembled into said section-generally-U-shaped portions, thereby constituting each of said contact modules;
said connector being constituted by juxtaposing a plurality of said contact modules in a housing.
7. The connector according to claim 6 , wherein:
said signal contacts are formed into units each of the two signal contacts forming a differential pair and said two signal contacts are arranged symmetrical to a center plane; and
said signal contacts are surrounded by said first ground plate and said second ground plate in a lattice fashion on the basis of said units each of the two signal contacts.
8. The connector according to claim 6 , wherein at least one of said ground plates has at least one contact portion for connection to a ground plate of a mating connector.
9. The connector according to claim 8 , wherein said contact portions are respectively provided at each two diagonal corners formed by said first ground plate and said second ground plate surrounding said units each of the two signal contacts in the lattice fashion.
10. The connector according to claim 8 , wherein said contact portions are respectively provided at each four corners formed by said first ground plate and said second ground plate surrounding said units each of the two signal contacts in the lattice fashion.