| 摘要 |
A mode coupler for monopulse applications in an antenna feed system which is used for obtaining angle deviations in azimuth and elevation, and which has a main wave guide in which a plurality of electromagnetic wave modes can be propagated. The mode coupler also has a plurality of mode-selective in/out coupling ports which are all formed as simple standard wave guides mounted on the main wave guide, and in which only the H10 mode is propagatable. A separator plate is disposed in the main wave guide to convert the (H11+E11) mode into two phase-opposed wave guide waves and, via a coupling loop, to couple them into a second wave guide mounted laterally on the main wave guide. The front edge of the separator plate forms a reflector for the H01 mode, and the reflected HO1 wave is coupled out of the main wave guide by a pair of wave guides mounted symmetrically on the main wave guide and connected via an H-plane junction to a common output wave guide.
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