Abstract: An electromagnetic waveguide component includes multiple planar layers and one or more layers are shaped to accommodate incoming electromagnetic waves. Each layer includes two more alignment features, and corresponding pins, the two or more alignment features in each of the layers providing precise stacking registration among the plurality of layers, and the planar layers, when assembled into a stack, are configured to provide a desired radio frequency (RF) response.

Abstract: An electromagnetic waveguide component includes multiple planar layers and one or more layers are shaped to accommodate incoming electromagnetic waves. Each layer includes two more alignment features, and corresponding pins, the two or more alignment features in each of the layers providing precise stacking registration among the plurality of layers, and the planar layers, when assembled into a stack, are configured to provide a desired radio frequency (RF) response.

Abstract: A cathode heater assembly for use in a vacuum electronic device comprises a refractive cup having a bottom portion and side walls forming a container; a cathode secured in the container of the refractive cup; and a heater wire coupled to the refractive cup. The cathode heater assembly may be manufactured by providing a refractive cup having a bottom portion and side walls forming a container; inserting a cathode pellet in the container of the refractive cup; impregnating the cathode pellet with electron emissive materials while the cathode pellet is in the container of the refractive cup; and attaching a heater wire to the refractive cup.

Abstract: A radio-frequency (RF) window comprises a first flange assembly including a first flange having a first flange thickness between a first surface and a second surface, and a first waveguide channel; and a first window element having a first window thickness and disposed in the first waveguide channel at a first location; and a second flange assembly stacked against the first flange assembly, the second flange assembly including a second flange having a second flange thickness between a third surface and a fourth surface, and a second waveguide channel; and a second window element having a second window thickness and disposed in the second waveguide channel at a second location, such that when the first flange assembly is stacked against the second flange assembly the second window element has a predetermined distance to the first window element, the predetermined distance selected based on a desired frequency band of operations.

Abstract: A method of manufacturing a radio frequency (RF) or electron beam structure, comprises forming each layer of multiple layers to be assembled and bonded together with positional alignment, the forming each layer including forming a first via segment of a first particular shape and dimension in the layer at a first location in the layer, such that when the first via segments of the multiple layers are assembled with positional alignment the multiple first via segments align to form a first via; and inserting a first analogous pin into the first via, the first analogous pin being formed based on the first particular shape and dimension of each of the first via segments, such that inserting the first analogous pin into the first via assists in causing the multiple layers to be assembled with positional alignment.

Abstract: A cathode heater assembly for use in a vacuum electronic device includes a refractive cup having a bottom portion and side walls forming a container; a cathode secured in the container of the refractive cup; and a heater wire coupled to the refractive cup. The cathode heater assembly may be manufactured by providing a refractive cup having a bottom portion and side walls forming a container; inserting a cathode pellet in the container of the refractive cup; impregnating the cathode pellet with electron emissive materials while the cathode pellet is in the container of the refractive cup; and attaching a heater wire to the refractive cup.

Abstract: A cathode heater assembly for use in a vacuum electronic device comprises a refractive cup having a bottom portion and side walls forming a container; a cathode secured in the container of the refractive cup; and a heater wire coupled to the refractive cup. The cathode heater assembly may be manufactured by providing a refractive cup having a bottom portion and side walls forming a container; inserting a cathode pellet in the container of the refractive cup; impregnating the cathode pellet with electron emissive materials while the cathode pellet is in the container of the refractive cup; and attaching a heater wire to the refractive cup.

Abstract: An electromagnetic waveguide component includes multiple planar layers and one or more layers are shaped to accommodate incoming electromagnetic waves. Each layer includes two more alignment features, and corresponding pins, the two or more alignment features in each of the layers providing precise stacking registration among the plurality of layers, and the planar layers, when assembled into a stack, are configured to provide a desired radio frequency (RF) response.