| 摘要 |
<p>A controlled impedance connector assembly includes a receptacle adapted for mounting on a printed circuit board (PCB) and for mating reception of a plug which carries terminal contacts of a plurality of coaxial cable leads. A honeycomb grounding block is mounted in the plug to engageably receive the outer conductor of each coaxial terminal, the inner conductive sleeve of each coaxial terminal being electrically coupled to a signal lead by a first contact member. Signal pin contacts within the receptacle and electrically coupled with the PCB are electrically coupled with each inner conductive sleeve when the plug is inserted into the receptacle. Likewise, ground pin contacts within the receptacle and electrically coupled with the PCB have second and third spaced resilient contact members, respectively, engaging the grounding block at distances farther from and nearer to the PCB than the first contact members. Within each coaxial terminal, air is a primary dielectric between the outer diameter of the signal lead and the inner diameter of the ground lead and the distance between the two is controlled to thereby maintain a substantially uniform impendance in the region of the connector matched to that of the coaxial lead. The signal and ground pin contacts may be pre-assembled in a holding block for shipping enabling ready assembly into the receptacle and, thereafter, connection to the PCB at the time the connector assembly is being installed. The plug is of a sturdy clam shell design, and reusable zipper-type tubing is used as a jacket to protectively enclose the coaxial cable leads in a bundle as they extend away from the plug.</p> |
