Abstract: Disclosed is a weld pad for an ultrasonic welding system having a sonotrode. For example, a universal weld pad. The weld pad includes a base and a welding component. The base includes an opening to receive an end of the sonotrode. The welding component includes a set of legs and a bridge portion therebetween. The welding component conforms to an outer surface of the weld substrate during a welding operation.

Abstract: A low cost, light weight, high performance phase shifter mounting structure which allows high density packaging of phase control modules for phased array antennas. The mounting structure is a bimetallic sandwich design in the shape of an I-beam having a top flange for mating to radiating elements, a bottom flange for mating to a feed network, and a center web for mounting phase control modules. The I-beam is formed from a single piece of laminated stock comprising an outer layer of aluminum and a core layer of titanium forming an anisotropic thermal expansion composite material. The titanium center web matches the coefficient of thermal expansion of the typical ferrite, MIC, or MMIC phase shifter and driver circuits. The aluminum flange material allows easy machining of microwave transitions at each end of the I-beam and matches the expansion of typical radiating element structure and feed networks.