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This paper describes the design of mm-wave integrated transformers and their application within a power amplifier (PA) in a 28 nm CMOS technology. The PA presents a 2-stage common-source differential topology and employs one transformer at the input and another at the output to perform single-ended to differential conversion, as well as another transformer to perform interstage matching. The baluns...
A fully integrated 5.6-6.4 GHz power amplifier is implemented in a 0.25 mum SiGe-HBT technology using an on-chip transformer combining structure. The novel combiner topology combines the output power of two push pull pairs and leads to a reduced transistor size compared to a conventional combiner while enhancing the efficiency and maintaining the maximum output power. Electromagnetic modeling of the...
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