Abstract: The accuracy of an impedance tuner may be improved and the size may be reduced by using linear actuators instead of rotary motors. The linear actuator may be integrated with position sensors to allow very small size, and implemented with a servo system for best accuracy and speed. Spring loaded arms holding the mismatch probes allow the tuner to operate in any orientation to further fit into small spaces. The small size reduces losses by allowing direct connection to wafer probes for on-wafer measurement systems.

Abstract: The accuracy of an impedance tuner may be improved and the size may be reduced by using linear actuators instead of rotary motors. The linear actuator may be integrated with position sensors to allow very small size, and implemented with a servo system for best accuracy and speed. Spring loaded arms holding the mismatch probes allow the tuner to operate in any orientation to further fit into small spaces. The small size reduces losses by allowing direct connection to wafer probes for on-wafer measurement systems.

Abstract: A shielded electrical connector is provided for mounting on a printed circuit board. The connector includes a dielectric housing having a plurality of terminal-receiving cavities and a plurality of board-engaging pads projecting from the bottom of the housing. A plurality of terminals are received in the cavities. Portions of the housing between the terminals are plated with conductive metal material to electrically shield the terminals from each other and to provide a controlled impedance. The plating is continuous onto the pads for connection to appropriate ground circuit means on the printed circuit board. In an alternative embodiment, a shielded electrical connector assembly includes a pair of connectors both of which have plated housings with interengaging plated portions.

Abstract: A shielded electrical connector is provided for mounting on a printed circuit board. The connector includes a dielectric housing having a plurality of terminal-receiving cavities and a plurality of board-engaging pads projecting from the bottom of the housing. A plurality of terminals are received in the cavities. Portions of the housing between the terminals are plated with conductive metal material to electrically shield the terminals from each other and to provide a controlled impedance. The plating is continuous onto the pads for connection to appropriate ground circuit means on the printed circuit board. In an alternative embodiment, a shielded electrical connector assembly includes a pair of connectors both of which have plated housings with interengaging plated portions.

Abstract: A solder-less printed circuit board edge connector (10) translates construction and impedance characteristics associated with a coaxial cable (20) to construction and impedance characteristics associated with a micro-strip transmission line formed on a printed circuit board (22). The solder-less printed circuit board edge connector (10) comprises a first edge connector (16), a second edge connector (16), and a “C-shaped” ground contact (30). The first edge connector (16) receives a first coaxial cable (20) having a first signal potential and a first ground potential, and has a first slot formed therein having the first ground potential. The second edge connector (16) receives a second coaxial cable (20) having a second signal potential and a second ground potential. The second edge connector (16) has a second slot formed therein having the second ground potential.

Abstract: A solder-less printed circuit board edge connector (10) translates construction and impedance characteristics associated with a coaxial cable (20) to construction and impedance characteristics associated with a micro-strip transmission line formed on a printed circuit board (22). The solder-less printed circuit board edge connector (10) comprises a first edge connector (16), a second edge connector (16), and a “C-shaped” ground contact (30). The first edge connector (16) receives a first coaxial cable (20) having a first signal potential and a first ground potential, and has a first slot formed therein having the first ground potential. The second edge connector (16) receives a second coaxial cable (20) having a second signal potential and a second ground potential. The second edge connector (16) has a second slot formed therein having the second ground potential.

Abstract: A plug (P) is present in the bore (B) of a wedge gripping device (W) in a barrel (1) of a grip. The device (W) is formed of tapering segments (4) which are held apart by the plug (P). When a length of wire or strand element (E) is received in the device (W), the plug (P) is diplaced out of the bore (B) so causing the device (W) to grip the element (E).