1results about How to "Improving Impedance Performance" patented technology

The invention discloses a rectangular coaxial waveguide-based unidirectional broadband spiral slot antenna and a manufacturing method thereof, and relates to the technical field of broadband unidirectional circularly polarized antenna design. The antenna structure is based on a rectangular coaxial waveguide, the broadband performance of the antenna is realized by using the broadband-pass characteristic of the rectangular coaxial waveguide, and meanwhile, the sizes of inner and outer conductors of the coaxial waveguide are reasonably adjusted, so that the characteristic impedance of the waveguide approaches 50 omega. According to the invention, the use of a balun and a matching network is effectively avoided, and the antenna structure is greatly simplified.