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

fYear

2015

fDate

17-22 May 2015

Firstpage

1

Lastpage

4

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 P_sat, OP_1dB, 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 P_out 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium (IMS), 2015 IEEE MTT-S International

Conference_Location

Phoenix, AZ

Type

conf

DOI

10.1109/MWSYM.2015.7166914

Filename

7166914