Title :
A 24 GHz CMOS power amplifier with successive IM2 feed-forward IMD3 cancellation
Author :
Yi-Hsin Chen ; Kun-Yao Kao ; Chun-Yen Chao ; Kun-You Lin
Author_Institution :
Dept. of Electr. Eng. & Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
This paper demonstrates a successive second-order intermodulation feed-forward cancelling path, which can reduce the third-order intermodulation distortion (IMD3) of a 24 GHz cascode power amplifier (PA) effectively. By adopting this technique, the Psat, OP1dB, and associated PAE are 16.6 dBm, 14.6 dBm, and 12.6%, respectively. The sweet-spot locates at 5 dBm output power with 20 dB IMD3 reduction. The Pout with the IMD3 better than -40 dBc is 7.9 dBm which is 3.7 dB improvement compared with the PA with turn-off auxiliary path.
Keywords :
CMOS analogue integrated circuits; feedforward amplifiers; intermodulation distortion; microwave power amplifiers; CMOS power amplifier; IMD3 reduction; cascode power amplifier; frequency 24 GHz; successive IM2 feed-forward IMD3 cancellation; successive second-order intermodulation feed-forward cancelling path; third-order intermodulation distortion; CMOS integrated circuits; Gain; Impedance matching; Radio frequency; Transistors; IMD; Power amplifiers; feed-forward;
Conference_Titel :
Microwave Symposium (IMS), 2015 IEEE MTT-S International
Conference_Location :
Phoenix, AZ
DOI :
10.1109/MWSYM.2015.7166914