CAJ | 학술논문

采用自适应偏置技术和有源电感实现了一款输出匹配可调的、高线性度宽带功率放大器( PA)。自适应偏置技术抑制了功放管直流工作点的漂移,提高了PA的线性度。有源电感参与输出匹配,实现了输出匹配可调谐,该策略可调整因工艺偏差、封装寄生造成的输出匹配退化。利用软件ADS对电路进行验证,结果表明,在4 GHz频率下,输入1 dB压缩点( P in 1 dB )为-7 dBm,输出1 dB压缩点(Pout 1 dB)为11 dBm,功率附加效率(PAE)为8.7%。在3.1 GHz~4.8 GHz频段内,增益为(20.3±1.1) dB,输入、输出的回波损耗均小于-10 dB。
채용자괄응편치기술화유원전감실현료일관수출필배가조적、고선성도관대공솔방대기( PA)。자괄응편치기술억제료공방관직류공작점적표이,제고료PA적선성도。유원전감삼여수출필배,실현료수출필배가조해,해책략가조정인공예편차、봉장기생조성적수출필배퇴화。이용연건ADS대전로진행험증,결과표명,재4 GHz빈솔하,수입1 dB압축점( P in 1 dB )위-7 dBm,수출1 dB압축점(Pout 1 dB)위11 dBm,공솔부가효솔(PAE)위8.7%。재3.1 GHz~4.8 GHz빈단내,증익위(20.3±1.1) dB,수입、수출적회파손모균소우-10 dB。
A broadband power amplifier( PA) was designed by adopting adaptive bias technique and active inductor. Adaptive bias technique effectively enhanced the power amplifier linearity by inhibiting DC operation point drifting of transistor. Active inductor participated in output matching realized output matching tuneability,this scheme could adjust output matching degradation due to process deviation and packaging parasitics. The PA was verified by simu-lation tool ADS. The results indicated the power amplifier had input 1 dB compression point(Pin1dB)of -7 dBm, output 1 dB compression point(Pout 1 dB)of 11 dBm at 4 GHz,and power added efficiency(PAE)of 8.7%. Over the frequency range of 3.1 GHz~4.8 GHz,the power amplifier showed a gain of 20.3 dB with the gain flatness of 1.1 dB,the input and output return loss are all less than -10 dB.