High frequency, wide band, triple balanced mixer

摘要

A triple balanced mixer includes two miniature diode quad rings (12, 14) positioned on opposite faces of a duroid sheet (16) which is integral with a duroid layer (18) of one of three pairs of parallel baluns (28, 30, 32). An LO balun pair (30) is connected directly to the ring terminals (80, 82, 84, 86) while ribbon connectors (34, 36) are used to interconnect the other balun pairs (28, 32) to the ring terminals (80, 82, 84, 86, 88, 90, 92, 94). The baluns (28, 30, 32) are orthogonally disposed and have a particular curved shape in order to accomodate the miniature rings (12, 14). The rings (12, 14) are suspended from the baluns (28, 30, 32) and positioned within a cavity (38) of a housing (20) which is provided with electromagnetic energy absorbent material and which is selectively dimensioned to minimize signal loss from the pairs of baluns (28, 30, 32), balun connectors (34, 36) and rings (12, 14).