A radio-frequency assembly is described which can be used in communication satellites, for example. The radio-frequency assembly contains a signal source in the form of a semiconductor amplifier output, an impedance matching filter, and a radio-frequency waveguide. The impedance matching filter is connected to the semiconductor amplifier output on the input side and to the radio-frequency waveguide on the output side. The impedance matching filter has a different impedance value on the input side from that on the output side and is matched to the semiconductor amplifier output on the input side and matched to the radio-frequency waveguide on the output side. Consequently, a separate matching circuit between semiconductor amplifier output and radio-frequency waveguide is no longer necessary.

The invention relates to a transition from a stripline to a waveguide, wherein: the stripline, preferably a microstrip line, is located on a substrate; an upper side of the substrate has a metallised surface and the lower side of the substrate has a metal layer, preferably a high-frequency ground-potential layer; the upper side and the lower side are connected to vias; and at least part of the metallised surface on the upper side of the substrate acts as a waveguide wall.

A waveguide structure includes a first waveguide section mechanically and electrically connected by a fixed connector to a second waveguide section. The waveguide sections include a dielectric material with a ground layer and a conductor structure with a pair of elongate conductors. The fixed connector includes a dielectric material with a pair of contact pads insulated from a ground layer. The fixed connector is attached by its top side to the bottom sides of interface sections of the waveguides sections forming a ground contact. The interface sections each comprise an intermediate conductor from each of the elongate conductors at the top side to the bottom side of the dielectric material. The intermediate conductors are connected via the contact pads.

A waveguide structure includes a first waveguide section mechanically and electrically connected by a fixed connector to a second waveguide section. The waveguide sections include a dielectric material with a ground layer and a conductor structure with a pair of elongate conductors. The fixed connector includes a dielectric material with a pair of contact pads insulated from a ground layer. The fixed connector is attached by its top side to the bottom sides of interface sections of the waveguides sections forming a ground contact. The interface sections each comprise an intermediate conductor from each of the elongate conductors at the top side to the bottom side of the dielectric material. The intermediate conductors are connected via the contact pads.

Waveguide interconnects for semiconductor packages are disclosed. An example semiconductor package includes a first semiconductor die, a second semiconductor die, and a substrate positioned between the first and second dies. The substrate includes a waveguide interconnect to provide a communication channel to carry an electromagnetic signal. The waveguide interconnect is defined by a plurality of through substrate vias (TSVs). The TSVs in a pattern around the at least the portion of the substrate to define a boundary of the communication channel.

Waveguide interconnects for semiconductor packages are disclosed. An example semiconductor package includes a first semiconductor die, a second semiconductor die, and a substrate positioned between the first and second dies. The substrate includes a waveguide interconnect to provide a communication channel to carry an electromagnetic signal. The waveguide interconnect is defined by a plurality of through substrate vias (TSVs). The TSVs in a pattern around the at least the portion of the substrate to define a boundary of the communication channel.

A transition unit providing a radio frequency signal transition between a radio frequency hollow waveguide system and a planar transmission line comprises two or more transition sections of transmission line arranged adjacent to each other at a first surface of the first substrate layer of a substrate layer arrangement. The hollow waveguide system comprises a distribution section. One input waveguide is separated into one dedicated output waveguide for each of the transition sections. For each of the transition sections of the transmission lines a corresponding end section of a respective output waveguide is directed perpendicular to the first surface of the first substrate layer. For each end section an open end of the end section of the waveguide system superposes the corresponding transition section. The two or more end sections are arranged adjacent to each other in order to provide for favorable boundary conditions for electromagnetic wave propagation.

A transition unit providing a radio frequency signal transition between a radio frequency hollow waveguide system and a planar transmission line comprises two or more transition sections of transmission line arranged adjacent to each other at a first surface of the first substrate layer of a substrate layer arrangement. The hollow waveguide system comprises a distribution section. One input waveguide is separated into one dedicated output waveguide for each of the transition sections. For each of the transition sections of the transmission lines a corresponding end section of a respective output waveguide is directed perpendicular to the first surface of the first substrate layer. For each end section an open end of the end section of the waveguide system superposes the corresponding transition section. The two or more end sections are arranged adjacent to each other in order to provide for favorable boundary conditions for electromagnetic wave propagation.

A transition unit of a radio frequency device provides a transition between a planar differential pair transmission line and a hollow radio frequency waveguide. A substrate layer arrangement with a planar differential pair transmission line is arranged on one or more surfaces of at least one substrate layer. An end section of the transmission line is configured as a radio frequency signal emission pattern. The transition unit has an end section of a waveguide for electromagnetic waves that is attached to the substrate layer arrangement and superposes the radio frequency signal emission pattern. The waveguide is directed perpendicular to the substrate layer arrangement. An open end of the end section of the waveguide is attached to a first outer surface or a second outer surface of the substrate layer arrangement. Opposite to the end section a back cavity is attached with an open end towards the substrate layer arrangement.

A transition unit of a radio frequency device provides a transition between a planar differential pair transmission line and a hollow radio frequency waveguide. A substrate layer arrangement with a planar differential pair transmission line is arranged on one or more surfaces of at least one substrate layer. An end section of the transmission line is configured as a radio frequency signal emission pattern. The transition unit has an end section of a waveguide for electromagnetic waves that is attached to the substrate layer arrangement and superposes the radio frequency signal emission pattern. The waveguide is directed perpendicular to the substrate layer arrangement. An open end of the end section of the waveguide is attached to a first outer surface or a second outer surface of the substrate layer arrangement. Opposite to the end section a back cavity is attached with an open end towards the substrate layer arrangement.