Raytheon Company

John P Pehowich

Gregary B Prince

George Vachula

Gerald C Dorman

Joseph Ranghelli

In one aspect, a method to discover and prevent a communications disruption in a mobile environment includes receiving data at a mobile platform from a geographical database, determining if the mobile platform will be blocked by a blockage event from accessing a network in response to data extracted from the geographical database and avoiding the blockage event if the mobile platform will be blocked from accessing the network.

Discovering and preventing a communications disruption in a mobile environment

A circulator for duplexing microwave signals is shown to consist of a pair of folded magic-T hybrid junctions with a nonreciprocal phase shift section disposed between the parallel ports of such junctions, the nonreciprocal phase shift section being made up of U-shaped ferrites supported between the insides of H-plane walls in a rectangular waveguide and U-shaped permanent magnets adjustably supported on the outsides of the H-plane walls so that the magnetic flux in the U-shaped ferrites may be changed as required.

Growing community of inventors

Sudbury, MA, United States of America

John P Pehowich