Abstract: There is described a dielectric polariser for a bicone antenna. The polariser can include radiating vanes that are spaced circumferentially around an aperture of the bicone antenna. The vanes are orientated at 45° to the polarised waves propagated from the antenna in order to circularly polarise the linearly polarised waves. The polariser can be configured for manufacture using a 3D printing process. Surfaces of a central hub of the polariser can be metallised to provide the radiating surfaces of the antenna. This removes the need to use separate antenna elements. Alternative arrangements of 3D printed dielectric polariser are disclosed for use with antenna horns.

Abstract: There is described a dielectric polariser for a bicone antenna. The polariser can include radiating vanes that are spaced circumferentially around an aperture of the bicone antenna. The vanes are orientated at 45° to the polarised waves propagated from the antenna in order to circularly polarise the linearly polarised waves. The polariser can be configured for manufacture using a 3D printing process. Surfaces of a central hub of the polariser can be metallised to provide the radiating surfaces of the antenna. This removes the need to use separate antenna elements. Alternative arrangements of 3D printed dielectric polariser are disclosed for use with antenna horns.

Abstract: A system for dispensing a flowable material from a cartridge body includes a housing for receiving the cartridge body. A nozzle, which is attachable to or integral with a dispensing end of the cartridge body, includes an outer surface and an inner surface, which defines a passageway for the flowable material. A flow control block is attachable to the housing and includes an inner surface defining in inlet passage and an outlet passage. The inlet passage is sized to receive at least a portion of the nozzle therein. The inner surface of the flow control block is configured to mate with the outer surface of the nozzle in a sealing relationship when at least a portion of the nozzle is disposed within the inlet passage.