Abstract: The present invention relates to the field of microwave transitions between a microstrip and a waveguide. With the intention of obtaining a broadband and trimming-free junction, the junction is comprised of a pad which has an underside and an upper side located on respective sides of a tongue that extends into the waveguide. The underside is in contact with the upper side through the medium of a metal layer applied to the edge of the tongue. The upper side is, in turn, connected to the microstrip line which extends to other electronic equipment. Because the two sides can be adapted for different frequencies, the junction can be given a broader band and will also be trimming-free, since it is insensitive to mechanical tolerances.

Abstract: A waveguide device for transmitting and processing microwave signals includes a plate structure having recesses forming waveguides for the transmitting the microwave signals between microwave components. The plate structure includes a body plate and covering plates for connection to opposite surfaces of the body plate. The body plate and the covering plates form delimiting surfaces for the waveguides, and the microwave components can be positioned in the body plate or the covering plates.

Abstract: The present invention relates to circulators for microwave frequencies and higher frequencies. The circulator (100;200;300) of the invention comprises a waveguide system, the waveguide system being situated in a waveguide house. A hole (111,211,311) is arranged in a first waveguide wall (171;271;371) of the waveguide system. A tubular piston (114;214;314) is arranged so that it can slide in the hole. A package, comprising ferrite material (132,135;235,235;332,335) in the shape of pucks, is arranged between a second waveguide wall (174;274;374) and the tubular piston, the second waveguide wall being opposite to the first waveguide wall. The tubular piston is pressed in the direction of the package. That end (117;217;317) of the tubular piston that faces away from the second waveguide wall is open, and slits (120;220;320) are arranged at this end, the slits stretching mainly in the direction of the tubular piston.

Abstract: The present invention relates to circulators for microwave frequencies and higher frequencies. The circulator (100;200;300) of the invention comprises a waveguide system, the waveguide system being situated in a waveguide house. A hole (111,211,311) is arranged in a first waveguide wall (171;271;371) of the waveguide system. A tubular piston (114;214;314) is arranged so that it can slide in the hole. A package, comprising ferrite material (132,135;235,235;332,335) in the shape of pucks, is arranged between a second waveguide wall (174;274;374) and the tubular piston, the second waveguide wall being opposite to the first waveguide wall. The tubular piston is pressed in the direction of the package. That end (117;217;317) of the tubular piston that faces away from the second waveguide wall is open, and slits (120;220;320) are arranged at this end, the slits stretching mainly in the direction of the tubular piston.