Polarization coupler using two-frequency bands in common

Abstract

Abstract PURPOSE:To obtain a simple orthogonal polarization coupler by constituting a titled coupler so that a common waveguide is excited with two orthogonal polarized waves for a frequency band wave 1 and transferring another higher frequency band wave 2 to the common waveguide with another orthogonal polarized waves having polarization in an optional direction without degrading an axial ratio in principle. CONSTITUTION:A round waveguide smaller than the common round waveguide is inserted from one end of the common round waveguide along the axis of this waveguide. A dielectric multilayered filter (d) is provided between the front end part of the inserted waveguide and the common round waveguide. In the constitution shown in a figure, the frequency of a band wave 1 is lower than that of the band wave 2. The dielectric multilayered filter (d) permits the band wave 1 to transmit through but does not permit the band wave 2 to transmit through. The band wave 2 inputted from an input port P2 is radiated to the common waveguide in the front end part of the waveguide which is the center conductor of a coaxial line. At this time, the dielectric multilayered filter (d) does not permit the band wave to transmit through. Consequently, the position and the structure of the dielectric multilayered filter (d) are contrived to transfer the band wave 1 to the common round waveguide without mismatching of impedance.

Inventors

• 👤 Susumu Tamagawa
• 👤 玉川　▲すすむ▼
• 👤 Makoto Ando
• 👤 真 安藤
• 👤 Kenji Ueno
• 👤 健治 上野

Bibliographic Details