Profile: Technical Research and Manufacturing, Inc. specializes in design & manufacturing of passive & active control components and integrated assemblies. We are an ISO 9001:2000 certified company. Our operating structure includes capabilities in design, documentation, research & development, PC board fabrication, machining, metal finishing, assembly, electrical and environmental testing. Our beamformers perform vector manipulation of two or more inputs to produce two or more outputs which when fed to or from an antenna array represent coordinates in a three dimensional system. Our couplers are commonly used for sampling a single direction of power which is propagating on a transmission line.