Abstract: A system for the distribution of VTT termination voltage for a GTL bus system includes a plurality of GTL signal lines, a plurality of first termination resistors, and a plurality of second termination resistors. The GTL signal lines have a first end and a second end. The resistors have a signal end and a VTT end. The first end of the signal line is connected to the signal end of the first resistor. The second end of the signal line is connected to the signal end of the first resistor. A plurality of nodes are formed from the VTT ends of the first and second resistors. These nodes may be formed in many different ways, and in many different numbers. The nodes are each driven with a separate VTT supply, and the nodes are interconnected such that a failure in the power supply furnishing power to one node does not affect the other nodes, and does not affect the operation of the system consuming this VTT voltage.

Abstract: A process for the reliable distribution of a shortcut table for layer 3 switching is distributed from a plurality of routers to a plurality of switches includes the transmission by the router of a list of shortcut entries, which includes a list of switches which have acknowledged receipt of this list of shortcut entries. The transmission of these database messages continues until all target switches have acknowledged receipt of the database messages. The interval between transmission of database messages is short until all switches have acknowledged reception of such database messages, and thereafter the interval between transmissions is lengthened, and a hello message is sent until a new switch is added to the network, or a change in router shortcut database occurs, whereafter the transmission of database messages is resumed utilizing the interval between these transmissions is again shortened until all such messages have been acknowledged.

Abstract: New elements mode-converting two-mode grating and mode-filtering two-mode coupler are disclosed and used as elements in a system for communications, add-drop filtering, and strain sensing. Methods of fabrication for these new two-mode gratings and mode-filtering two-mode couplers are also disclosed.

Abstract: A tunable filter comprises either an internal or an external grating proximal to a variable index of refraction material. This variable index of refraction material may vary upon the application of an external electrical potential or the application of a change in temperature of the polymer. Additionally, the grating may comprise a periodic modulation of the index of refraction, this periodic modulation comprising an isoplanar modulation of the index of refraction at an angle to the central axis of the waveguide, thereby causing conversion of fundamental mode waves to second mode waves, and by reciprocity, conversion of second mode waves to fundamental mode waves.

Abstract: A connector having ESD protection is disclosed having a housing, and a first and second set of connector contacts. First set of connector contacts provide discharge of static charge prior to the engagement of second set of connector contacts. Connector may be adapted to provide protection against static charge transfer in applications ranging from an RJ-45 connector realization to a PCB edge connector application.

Abstract: A high power water load for microwave and millimeter wave radio frequency sources has a front wall including an input port for the application of RF power, a cylindrical dissipation cavity lined with a dissipating material having a thickness which varies with depth, and a rear wall including a rotating reflector for the reflection of wave energy inside the cylindrical cavity. The dissipation cavity includes a water jacket for removal of heat generated by the absorptive material coating the dissipation cavity, and this absorptive material has a thickness which is greater near the front wall than near the rear wall. Waves entering the cavity reflect from the rotating reflector, impinging and reflecting multiple times on the absorptive coating of the dissipation cavity, dissipating equal amounts of power on each internal reflection.

Abstract: A plurality of power supplies are connected in parallel, each power supply isolated from the others using a non-linear isolation element such as a barrier diode. Feedback is furnished around the non-linear isolation element such that the voltage drop of the isolation element is reduced to be within the regulation range desired. The non-linear characteristic of the isolation element combined with feedback produces an output impedance which is low for high currents, and exponentially higher for low output currents for current sharing versus output offset voltage improvement.

Abstract: The apparatus and method described herein provides for creating multiple spatial patterns, such as magnetic patterns on credit cards. The invention includes storage of information from which patterns may be created, a pattern creation device for creating the spatial patterns, and control whereby the information which is stored is selectively utilized to cause the pattern creation. This allows multiple desired patterns to be simulated, allowing convenient replacement of a number of separate pattern carrying devices.