| 摘要 |
<p>A crossover (22) for a microwave circuit (20) constructed within a plate (30) includes intersecting square-shaped coaxial transmission lines (25, 26), each of which is formed by machining channels (28) within the plate, with square-shaped central rods (34) disposed along the axes of the channels and insulated from the side walls thereof. At the intersection, reduced weight segments (44, not shown) of the rods pass, respectively, over and under a centrally located septum (36). The crossover segment of the line (26) passes between the septum and a cover (not shown) to provide the structure of a coaxial line between the cover and the septum. Matching structures in the form of a miter at the end of each center conductor reduce reflection at the junction of the segment at the septum with the balance of the transmission line. The forgoing segments are approximately one-quarter wavelength of the microwave frequency. </p> |
