| 摘要 |
Mini-microstrip and mini-coplanar transmission lines are formed on a ship substrate with two metal layers. Together with a ground plane on the underside of the substrate, the lines are connected to form a Marchand balun. Two baluns, a quarter-wave transmission line and a diode quad are combined on a chip to form an MMIC mixer, and a par of mixers are combined with 90 DEG and 180 DEG splitters to provide circuits with superior rejection of specific spurious signals as well as RF and LO leakage over.
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