This paper presents a dual-nonlinear branch linearizer for reducing the corrected amplitude overshoot of conventional single nonlinear branch linearizer. Theoretical analysis is carried out, the analysis is verified b...This paper presents a dual-nonlinear branch linearizer for reducing the corrected amplitude overshoot of conventional single nonlinear branch linearizer. Theoretical analysis is carried out, the analysis is verified by simulation, and a prototype of Ka band 25.28~26.08 GHz dual nonlinear branch linearizer is achieved. It indicates that the corrected amplitude overshoot is less than 0.5 dB, the C/I3 improvement is more than 10 dB related to a single carrier IBO 9 dB, when it is linked and tested for 50 W spacebrone Travelling Wave Tube Amplifier(TWTA).展开更多
This paper proposes that a radio frequency power amplifier is suitable for a 5G millimeter wave.It adopts a three-stage single-ended structure at 28GHz.An analog predistortion lmearization method is used to improve th...This paper proposes that a radio frequency power amplifier is suitable for a 5G millimeter wave.It adopts a three-stage single-ended structure at 28GHz.An analog predistortion lmearization method is used to improve the linearity of the power amplifier(PA).As a result,there is a significant improvement in power-added efficiency(PAE)and linearity is achieved.The Ka-band PA is implemented in TSMC 65nm CMOS process.At 1.2V supply voltage,the PA proposed in this paper achieves a saturated output power of 15.9dBm and a PAE of 16%.After linearization,the output power at the ldB compression point is increased by 2dBm,with efficient gain compensation performance.展开更多
文摘This paper presents a dual-nonlinear branch linearizer for reducing the corrected amplitude overshoot of conventional single nonlinear branch linearizer. Theoretical analysis is carried out, the analysis is verified by simulation, and a prototype of Ka band 25.28~26.08 GHz dual nonlinear branch linearizer is achieved. It indicates that the corrected amplitude overshoot is less than 0.5 dB, the C/I3 improvement is more than 10 dB related to a single carrier IBO 9 dB, when it is linked and tested for 50 W spacebrone Travelling Wave Tube Amplifier(TWTA).
文摘This paper proposes that a radio frequency power amplifier is suitable for a 5G millimeter wave.It adopts a three-stage single-ended structure at 28GHz.An analog predistortion lmearization method is used to improve the linearity of the power amplifier(PA).As a result,there is a significant improvement in power-added efficiency(PAE)and linearity is achieved.The Ka-band PA is implemented in TSMC 65nm CMOS process.At 1.2V supply voltage,the PA proposed in this paper achieves a saturated output power of 15.9dBm and a PAE of 16%.After linearization,the output power at the ldB compression point is increased by 2dBm,with efficient gain compensation performance.
