Input device of two orthogonal polarized-wave waveguide type, and radio wave receiving converter and antenna device using the input device

An input device of a two orthogonal polarized-wave waveguide type, comprising:

• a waveguide to which first and second polarized waves orthogonal to each other are input;
• first and second board holding units for holding first and second circuit boards, respectively;
• and
• first and second probes having tip portions provided to protrude in said waveguide in parallel with said first and second polarized waves, respectively, and having proximal end portions connected to said first and second circuit boards, respectively, wherein
• said waveguide and said first and second board holding units are integrally formed, and
• said first board holding unit is provided on a first side of said waveguide, and said second board holding unit is provided on a second side of said waveguide, said second side of said waveguide being at a side opposing said first side of said waveguide, such that said waveguide is sandwiched between said first board holding unit and said second board holding unit.