Abstract: A microstrip to waveguide transition comprising a waveguide module and a section of printed circuit board (PCB). The waveguide module comprises a waveguide aperture and a repetitive structure, the waveguide aperture being arranged extending through the module for attaching a waveguide to an external side of the module, the repetitive structure comprising a plurality of protruding elements arranged to surround the waveguide aperture on an internal side of the module and to define a passage into the waveguide aperture on the internal side, wherein the repetitive structure is configured to attenuate electromagnetic signal propagation in a frequency band past the repetitive structure while allowing propagation via the passage, the transition further comprising a PCB with a patch antenna connected to a transmission line and arranged to face the passage into the waveguide aperture.

Abstract: A system for simultaneous heat recovery and flue gas cleaning, comprising at least one heat pump (300), at least one combined heat recovery and flue gas cleaning unit (1) comprising a heat exchanger (10), said unit having an inlet (20) directing a flow of flue gas into said unit, an outlet (40) for allowing said flow of flue gas to leave said unit, wherein said heat pump is adapted to deliver a flow of cooling media to the heat exchanger at a temperature in the interval of about ?4 to about +4° C. This system is compact, efficient and easy to operate. The system can easily be expanded thanks to a modular concept, and it is well suited for mobile applications. A method for heat recovery and flue gas cleaning is also disclosed.

Abstract: A packaging apparatus (1) comprises: a housing (11); an actuator (12) configured to move the housing between a first position, in which a package (22) is unconstrained by the housing, and a second position, in which the housing houses the package (22); and a gas blower (13) configured to introduce a flow of gas into the housing via a gas inlet (15), wherein the gas blower comprises a fan.

Abstract: A method and an apparatus for reducing the spread of hit pattern for a rotationally-stabilized ammunition unit such as a projectile, which is discharged in a ballistic trajectory from an artillery piece towards a target which is to be combated including dynamic balancing of the shell (1) to reduce the effect of the air resistance between different shells, and increase hit probability. The inclination between the main axis of inertia of the shell and the geometric axis of the shell case are measured, whereafter these axes are set in parallel in that an adjustment weight (2) is mounted on one side of the point of gravity of the shell seen in its longitudinal direction. The adjustment weight (2) preferably consists of a disk or washer provided with an eccentric recess (4) for suitable weight and mass eccentricity.