Distributed active transformer based millimeter-wave power amplifier circuit

A distributed active transformer based millimeter-wave power amplifier circuit for power amplification of an input frequency signal, which the power amplifier circuit comprises:

• a driver amplifier array circuit unit, which is composed of a plurality of cascode driver amplifiers, for amplification and splitting of the input frequency signal into at least two amplified signals including a first amplified signal and a second amplified signal;
• a transformer array circuit unit for reception and processing of the first amplified signal and the second amplified signal output from the driver amplifier array circuit unit through an electromagnetic induction effect to thereby convert the first amplified signal into a first pair of differential signals including a first positive differential signal and a first negative differential signal, and meanwhile to thereby convert the second amplified signal into a second pair of differential signals including a second positive differential signal and a second negative differential signal;
• a power amplifier array circuit unit, which is composed of the plurality of cascode power amplifiers, for reception and power amplification of the first positive differential signal, the first negative differential signal, the second positive differential signal, and the second negative differential signal output from the transformer array circuit unit to thereby correspondingly produce a first amplified positive differential signal, a first amplified negative differential signal, a second amplified positive differential signal, and a second amplified negative differential signal;
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• a distributed active transformer circuit unit for reception and distributed active power transformation of the first amplified positive differential signal, the first amplified negative differential signal, the second amplified positive differential signal, and the second amplified negative differential signal output from the power amplifier array circuit unit, to thereby produce a transformed signal for use as an output frequency signal.