Abstract: A conformable waveguide for conveyance of high frequency radio signals including a hollow component having a smooth interior surface and an obround cross section, the obround cross section defined as having parallel opposing sides connected by two rounded opposing ends, where the parallel opposing sides are separated by a first distance, where vertices of the two rounded opposing ends are separated by a second distance, and where the second distance is greater than the first distance.

Abstract: A conformable waveguide for conveyance of high frequency radio signals including a hollow component having a smooth interior surface and an obround cross section, the obround cross section defined as having parallel opposing sides connected by two rounded opposing ends, where the parallel opposing sides are separated by a first distance, where vertices of the two rounded opposing ends are separated by a second distance, and where the second distance is greater than the first distance.

Abstract: A mechanical, M-to-N, reciprocating millimeter waveguide switch is provided, where M and N are integers. A mechanical, one-to-four, reciprocating millimeter waveguide switch is also provided, together with a method for switching millimeter waves from one input to one of four outputs is also provided.

Abstract: A blind mate waveguide flange includes a mating surface for interfacing with a waveguide probe interface. The mating surface includes a choke flange and a first opening to one end of a waveguide transition section. The choke flange includes a choke groove separating a peripheral region of the mating surface from an inner region of the mating surface. The inner region is recessed relative to the peripheral region to provide an air gap upon mating with another mating surface. The first opening has a first shape. The blind mate waveguide flange further includes a waveguide connection interface that includes a second opening at an opposite end of the waveguide transition section for interfacing with a waveguide. The second opening has a second shape such that the waveguide transition section provides a transition from the first shape to the second shape.

Abstract: A mechanical, M-to-N, reciprocating millimeter waveguide switch is provided, where M and N are integers. A mechanical, one-to-four, reciprocating millimeter waveguide switch is also provided, together with a method for switching millimeter waves from one input to one of four outputs is also provided.

Abstract: A blind mate waveguide flange includes a mating surface for interfacing with a waveguide probe interface. The mating surface includes a choke flange and a first opening to one end of a waveguide transition section. The choke flange includes a choke groove separating a peripheral region of the mating surface from an inner region of the mating surface. The inner region is recessed relative to the peripheral region to provide an air gap upon mating with another mating surface. The first opening has a first shape. The blind mate waveguide flange further includes a waveguide connection interface that includes a second opening at an opposite end of the waveguide transition section for interfacing with a waveguide. The second opening has a second shape such that the waveguide transition section provides a transition from the first shape to the second shape.

Abstract: A molding tool for molding a substantially hollow article from a tubular parison comprises molding surfaces defining at least one cavity for forming a hollow portion of a molded article, the hollow portions having walls formed by expansion of the parison within the cavities and defining at least one solid area of the article to be molded attached to a wall of a hollow portion, the solid area comprising waste of the article as molded and the molding surfaces comprising surface undulations effective to improve the rate of heat transfer between the molding surfaces and the molding material comprising the solid areas. A mold assembly for molding hollow articles from tubular parisons comprises a molding tool in accordance with the invention. A blow molding machine comprises a mold assembly in accordance with the invention.