| 摘要 |
<p>An adapter (40) for connecting a waveguide (42) to a microwave circuit (20) of coaxial transmission lines (26) which is formed by milling out a channel (24) with rectangular or square cross-section. The channel walls serve as the outer conductor of the coaxial line, whereas a rod (28) of rectangular or square cross-section serves as an inner conductor. An aperture (56) is provided in an outer wall of the coaxial line. A stem (58) connects with the inner conductor and passes through the aperture. The waveguide is positioned with its propagation axis parallel to the stem, the waveguide enclosing the stem and being secured to the outer walls of the coaxial lines. The stem is placed near the inner wall of the waveguide to support a transverse electromagnetic wave. A dipole element (60) of planar shape extends transversely of the waveguide and is secured at an edge thereof to the terminus of the stem. The dipole element launches a propagating mode of wave within the waveguide while receiving its energization from the transverse electromagnetic wave propagating along the coaxial line and along the stem. </p> |
