This paper presents a millimeter-wave (mm-Wave) power amplifier (PA) topology that avoids the trade-off between bandwidth and load modulation.The proposed topology uses three PA paths and can achieve efficiency enhancement at power back-off without load modulation.With a 100 MHz 5G NR FR2 1-CC 64-QAM signal, this PA achieves PAVG and PAEAVG of 6.45 -12.61 dBm and 5.9 -16.4% from 25 -40 GHz, respectively.With a 200 MHz, signal, PAVG and PAEAVG are 5.58 -11.1 dBm and 4.8 -13.3%, respectively.
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Liu et al. (2024) studied this question.
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