Feed horn of converter for satellite communication reception, fabrication method of such feed horn, and satellite communication reception converter

A satellite communication reception converter including a converter circuit converting a satellite communication wave into an electric signal, and a feed horn receiving and transmitting a satellite communication wave to said converter circuit, wherein

• said feed horn is configured with a tubular member formed of a resin material having a waveguide plane guiding an input satellite communication wave formed on an inner circumferential plane, and an ornamental plane constituting an outer circumferential plane, and
• said tubular member is divided into an inner side resin member located at an inner circumferential plane side, and an outer side resin member located at an outer circumferential plane side.

A fabrication method of a feed horn of a satellite communication reception converter, configured with a tubular member formed of a resin material, having a waveguide plane guiding an input electric wave formed on an inner circumferential plane, and an ornamental plane constituting an outer circumferential plane, said fabrication method comprising the steps of:

• forming an inner side resin member constituting an inner circumferential plane side of said tubular member by injection molding with a resin material that allows metal plating,
• applying metal plating on a surface of said inner side resin member, and
• forming an outer side resin member constituting an outer circumferential plane side of said tubular member by injection molding so as to cover an outer circumferential plane of the inner side resin member applied with said metal plating.

A fabrication method of a feed horn of a satellite communication reception converter configured with a tubular member formed of a resin material, having a waveguide plane guiding an input wave formed on an inner circumferential plane, and an ornamental plane constituting an outer circumferential plane, said fabrication method comprising the steps of:

• forming an inner side resin member constituting an inner circumferential plane side of said tubular member by injection molding with a resin material that allows metal plating,
• forming an outer side resin member constituting an outer circumferential plane side of said tubular member by injection molding with a resin material that disallows metal plating so as to cover an outer circumferential plane of said inner side resin member, and
• selectively applying metal plating only at an exposed surface of said inner side resin member among said tubular member.