| 摘要 |
This invention concerns suspended stripline having RF and LO inputs, in connection with which is used a novel rat race mixer (30). The rat race mixer is in the form of a ring (31) formed on a substrate (18), with the ring being entirely surrounded by a ground plane (24) located on the same side of the substrate (18) as the ring. Diode means (32 and 34) are utilized on the outer part of the ring (31), connecting the ring to the ground plane (24) at locations of RF and LO maxima. A high impedance lead (36) in the center of the ring (31) defines the location at which the IF is extracted, and in a preferred embodiment, a bellows (42) supported by the centerpost (40) of a coaxial bulkhead connector (46) is in contact with the high impedance lead (36).
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