Abstract: An apparatus includes a coldplate configured to be thermally coupled to a structure to be cooled and to remove thermal energy from the structure. The coldplate includes (i) first and second outer layers having at least one first material and (ii) a third layer embedded in the outer layers and having at least one second material. The first and second materials have different coefficients of thermal expansion (CTEs). The third layer is embedded non-uniformly in the outer layers so that different zones of the coldplate have different local CTEs. The third layer may include openings extending through the second material(s), and projections of the first material(s) from at least one of the first and second outer layers may partially or completely fill the openings. The first and second outer layers may include aluminum or an aluminum alloy, and the third layer may include aluminum silicon carbide or thermal pyrolytic graphite.

Abstract: A mounting collar comprises a collar body comprising an opening for receiving at least a portion of an electronics component (e.g., capacitor) of an electronics assembly, and a radial retention component supported about an inner surface (e.g., annular groove) of the opening of the collar body. The radial retention component (e.g., elastomeric O-ring) is operable to apply a radial force on the electronics component to at least partially support the electronics component. A mounting system comprises a first mounting collar for mounting a first electronics component to a support structure, and a second mounting collar for mounting a second electronics component to the support structure. The first and second mounting collars can be nested together to minimize a distance between the first and second electronics components. The first and second mounting collars can each comprise an elastomeric O-ring to reduce strain between the electronics components and the circuit board.

Abstract: A mounting collar comprises a collar body comprising an opening for receiving at least a portion of an electronics component (e.g., capacitor) of an electronics assembly, and a radial retention component supported about an inner surface (e.g., annular groove) of the opening of the collar body. The radial retention component (e.g., elastomeric O-ring) is operable to apply a radial force on the electronics component to at least partially support the electronics component. A mounting system comprises a first mounting collar for mounting a first electronics component to a support structure, and a second mounting collar for mounting a second electronics component to the support structure. The first and second mounting collars can be nested together to minimize a distance between the first and second electronics components. The first and second mounting collars can each comprise an elastomeric O-ring to reduce strain between the electronics components and the circuit board.

Abstract: A coaxial transmission line structure having a center conductor section having an input contact and an output contact the output contact being larger than the input contact, the center conductor having a plurality of different geometrically shaped, electrically conductive layers having sizes progressively increasing from the input contact to the larger output contact to conductor transition from the input contact to the larger output contact, the electrically conductive layers being electrically interconnected by staggered microvias passing through dielectric layers to the center, and (B) an outer conductor section disposed about, coaxial with, and electrically isolated from, the center conductor by the dielectric layers.

Abstract: A coaxial transmission line structure having a center conductor section having an input contact and an output contact the output contact being larger than the input contact, the center conductor having a plurality of different geometrically shaped, electrically conductive layers having sizes progressively increasing from the input contact to the larger output contact to conductor transition from the input contact to the larger output contact, the electrically conductive layers being electrically interconnected by staggered microvias passing through dielectric layers to the center, and (B) an outer conductor section disposed about, coaxial with, and electrically isolated from, the center conductor by the dielectric layers.

Abstract: A support apparatus for a component is provided and includes a periphery entirely disposable within a footprint of the component on a surface of a substrate, a first portion having a first surface adhesively connectable to the component, a second portion having a second surface disposable to contact the surface of the substrate in discrete sectors and defining an aperture through which leads are extendable from the component and through the substrate, and vents extending between the discrete sectors from the aperture to the periphery, and bosses disposed to protrude from the second surface and into through-holes defined in the substrate.

Abstract: A support apparatus for a component is provided and includes a periphery entirely disposable within a footprint of the component on a surface of a substrate, a first portion having a first surface adhesively connectable to the component, a second portion having a second surface disposable to contact the surface of the substrate in discrete sectors and defining an aperture through which leads are extendable from the component and through the substrate, and vents extending between the discrete sectors from the aperture to the periphery, and bosses disposed to protrude from the second surface and into through-holes defined in the substrate.

Abstract: In one aspect, a busbar connector includes first and second portions. Each portion includes a rigid member forming an exterior portion of the busbar connector, a conduction member forming an interior portion of the busbar connector and a compliant member having a stiffness less than the rigid member and including a first surface attached to the rigid member and a second surface opposite the first surface attached to the conduction member. The busbar connector also includes a fastener structure configured to secure a first busbar and a second busbar between and in contact with the conduction members of the first and second portions to allow current to flow between the first and second busbars.