Abstract: An apparatus including an inner conductor and an outer conductor. The inner conductor may comprise a cylindrical portion, a tapered end and a plurality of blades. The blades may be arranged around the cylindrical portion and extend along a length of the cylindrical portion with a predetermined shape. The shape may have a probe at a first end and a second end of the shape may meet the cylindrical portion. The tapered end may have an input/output (I/O) transition. The outer conductor may comprise a cavity, a first connector and a plurality of second connectors. The inner conductor may be within the cavity. The first connector may be connected to the I/O transition. Each of the second connectors may be connected to the probe of one of the blades. The shape of each of the blades may be configured to provide a low-loss transition for a microwave signal.

Abstract: An apparatus comprising a first circuit and a circuit. The first circuit may be configured to receive an input signal, split the input signal into component signals and present the component signals to a plurality of amplifiers. The second circuit may be configured to receive amplified component signals from the amplifiers and combine the amplified component signals into an output signal. The circuits may each comprise an outer conductor, an inner conductor, a cavity and a plurality of blades. Each of the blades may be arranged evenly spaced along a surface within the cavity and extend along a length of the surface with a shape. The shape of the blades may have a probe and the shape may gradually meet the surface and may be configured to provide a low-loss transition for propagation of a microwave signal. The output signal may be an amplified version of said input signal.

Abstract: A stencil includes a substrate defining at least one aperture extending therethrough. The at least one aperture provides a template for painting a design on an underlying surface. The stencil is also provided with an adhesive layer at least partially covering one side of the substrate. The adhesive layer is a reversible adhesive configured to temporarily attach the stencil to an underlying surface and leave the underlying surface unmarked after removal. The reversible adhesive retains an adhesion property for a plurality of adhesion cycles.