Telefonaktiebolaget Lm Ericsson (publ)

Marconi Communications Gmbh

Tesat-spacecom Gmbh & Co Kg

Robert Boschgmbh

Ericsson Ab

Ulrich Mahr

Uwe Rosenberg

Christian Arnold

Tobias Janocha

Benjamin Falk

Heinz Pfizenmaier

Joerg Schneemann

Michael Franz

Jurgen Ebinger

Andre Berger

Ralf Kröner

Tobias Kässer

A circuit arrangement having two interconnected high-frequency components, namely a first component and a second component, is described. A connection for transferring high-frequency signals is arranged between the first component and the second component. The connection includes at least one inner conductor, which is at least partially enclosed by an outer conductor. The inner conductor is connected to the first component and to the second component in order to transfer high-frequency signals. The second component includes a contact surface on a connecting surface and the inner conductor is pressed using a pressure force onto the contact surface, to establish a high-frequency connection between the first component and the second component.

Circuit arrangement consisting of two interconnected high-frequency components

A high-frequency module can be used in communication satellites. The high-frequency module contains an electronic unit and a housing. The housing at least partially encloses the electronic unit, and the electronic unit is arranged at least partially in an interior space of the housing. An internal connector is arranged on the housing, which is coupled to the electronic unit such that electrical signals can be transmitted between the electronic unit and the internal connector. The internal connector is constructed integrally with at least a part of the housing. This allows a thermo-mechanical stress on the electronic unit to be reduced.

High-frequency module with connection interface

An antenna feed device () having a first waveguide () and a second waveguide () separated from the first waveguide (), each of which is assigned to feed one polarization of a dedicated antenna and each of said waveguides exhibit an overall L-shape form where at least one section of the L-shape of each waveguide is in parallel to the other, both having respectively a first () and a second () antenna end ending in one plane for connection to an ortho-mode transducer associated with the antenna, while the other sections of the two L-shape waveguides extend in opposite directions, having respectively a first () and a second () radio end, each of which ends with a single waveguide port for connection to a radio equipment and the waveguides arrangement yields an overall compact T-shape interconnection of the antenna and the radios dedicated to the orthogonal polarizations.

Antenna feed device

A junction () for connecting two waveguides having an angular offset between longitudinal symmetry axes of their cross-sections and a first linear offset of the center axes of the waveguides. The junction () comprises at least a first and a second transformer sections () both having said first angular offset between longitudinal symmetry axes of their cross-sections and said first linear offset of their center axes, wherein each of said transformer sections () has one protruded ridge () on broad walls, wherein the first ridge () is mainly situated outside the cross section of the second transformer sectionand the second ridge () is mainly situated outside the cross section of the first transformer section ().

Waveguide junction having angular and linear offsets for providing polarization rotation

A junction () for connecting two waveguides () having a first angular offset (&#x3b1;) between longitudinal symmetry axes of their cross-sections, said junction () comprising a first interface and a second interlace for connecting said waveguides (). The junction further comprises at least a first transformer section () and a second transformer section (), both having cross-sections of substantially rectangular shape, and both having said first angular offset (&#x3b1;) between longitudinal symmetry axes of their cross-sections. Each of said transformer sections () has two protruded ridges () on its opposite walls.

Waveguide junction

A junction for connecting two waveguides having substantially a 90-degree angular offset between longitudinal symmetry axes of their cross-sections. The junction has a first interface and a second interface for connecting the waveguides, and at least a first transformer section and a second transformer section, both having cross-sections of substantially rectangular shape, and both having the 90-degree angular offset between longitudinal symmetry axes of their cross-sections. The first and second transformer sections are connected such that a T-shape connection is formed and the first transformer section has a first protruded ridge on its broad wall and the second transformer section has a second protruded ridge on its broad wall. The broad wall with the second ridge is connected to the top narrow wall of the first transformer section and the ridges are located such that they overlap.

T-shape waveguide twist-transformer

A parabolic reflector for an antenna has a plurality of concentric annular sections arranged in series from a first annular section nearest a central axis of the reflector to a last annular section defining an outer perimeter of the reflector. Each section has a parabolic reflecting surface between inner and outer perimeters. The sections are configured such that the focal point associated with at least the last section lies inside an internal volume of the reflector and are arranged with respect to each other along the central axis, such that an overall depth of the reflector is substantially minimized. The inner perimeters of all the sections are preferably arranged to lie substantially on a plane which is perpendicular to the central axis. The outer perimeter of each section except the last section is preferably connected with the inner perimeter of the succeeding section by means of an annular strip. The strips may either each have an angle of inclination to the reflector central axis of between 0&#xb0; and 3&#xb0; or they may lie on respective cones running from the respective inner perimeters of the respective sections to which they are joined, to the furthest located focal point or ring.

Parabolic reflector and antenna incorporating same

A cassegrain-type feed for a parabolic antenna is a dual-band feed and employs a waveguide feeding a dielectric cone feeding a subreflector. The waveguide has an end-portion adjacent a narrow end of the cone. The impedance of an inner wall of the cone is modified by the inclusion of a dielectric sleeve of thickness between &#x2159; and &#xbc; of a wavelength relative to propagation in the sleeve at a mean value of the upper of the two frequency bands concerned. The sleeve helps to provide a rotationally substantially symmetric illumination of the subreflector in the upper frequency band and, when used with a parabolic main reflector, a similarly symmetric illumination of the main reflector also. The sleeve may be replaced by a series of grooves formed in the inner wall of the waveguide end-portion, these grooves being nominally &#xbc; of a mean wavelength deep.

Cassegrain-type feed for an antenna

In a device for directional transmission and/or receiving of electromagnetic waves, including at least one antenna element and a dielectric lens, there is arranged between them a prefocusing dielectric body for avoiding overradiation of the lens. In order to simplify adjustment, the lens has an extended surface, is preferably pot-shaped, and forms, in conjunction with a baseplate, a hermetically sealed housing for unencapsulated ICs.

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Backnang, Germany

Ulrich Mahr