TY - GEN
T1 - A 44-GHz high-linearity MMIC medium power amplifier with a low-loss built-in linearizer
AU - Tsai, Jeng Han
AU - Chang, Hong Yeh
AU - Wu, Pei Si
AU - Huang, Tian Wei
AU - Wang, Huei
PY - 2005
Y1 - 2005
N2 - This paper presents a 44-GHz MMIC medium power amplifier with a low-loss built-in linearizer using a 0.15-μm GaAs HEMT process. The proposed cold-mode HEMT linearizer can enhance the linearity of the power amplifier with a low insertion loss, a compact die-size, and zero dc consumption. These advantages make the linearizer more suitable for millimeter-wave applications. The experimental results show that the medium power amplifier output spectrum re-growth can be suppressed by 7-9 dB at 44 GHz. In addition, the EVM of the QPSK and 16-QAM modulated signal can be reduced from 4.5% to 3.7% and 10.8% to 7.4% respectively. To the best of our knowledge, this is the first attempt of using pre-distortion linearization techniques in millimeter-wave bands.
AB - This paper presents a 44-GHz MMIC medium power amplifier with a low-loss built-in linearizer using a 0.15-μm GaAs HEMT process. The proposed cold-mode HEMT linearizer can enhance the linearity of the power amplifier with a low insertion loss, a compact die-size, and zero dc consumption. These advantages make the linearizer more suitable for millimeter-wave applications. The experimental results show that the medium power amplifier output spectrum re-growth can be suppressed by 7-9 dB at 44 GHz. In addition, the EVM of the QPSK and 16-QAM modulated signal can be reduced from 4.5% to 3.7% and 10.8% to 7.4% respectively. To the best of our knowledge, this is the first attempt of using pre-distortion linearization techniques in millimeter-wave bands.
KW - Linearizer
KW - Millimeter-wave (MMW)
KW - Monolithic microwave integrated circuit (MMIC)
KW - Nonlinear
KW - Power amplifier (PA)
UR - http://www.scopus.com/inward/record.url?scp=33749251304&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749251304&partnerID=8YFLogxK
U2 - 10.1109/MWSYM.2005.1517001
DO - 10.1109/MWSYM.2005.1517001
M3 - Conference contribution
AN - SCOPUS:33749251304
SN - 0780388461
SN - 9780780388468
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 1575
EP - 1578
BT - 2005 IEEE MTT-S International Microwave Symposium Digest
T2 - 2005 IEEE MTT-S International Microwave Symposium
Y2 - 12 June 2005 through 17 June 2005
ER -