Title :
A 2.4GHz highly linear class C power amplifier in 0.18 μ m CMOS technology
Author :
Cao, Shengguo ; Liu, Yang ; Lu, Wenqing ; Cheng, Shiwei ; Zhang, Ke ; Li, Wenhong ; Zhou, Xiaofang
Author_Institution :
Fudan Univ., Shanghai
Abstract :
This paper presents a class C power amplifier (PA) with high efficiency and linearity , implemented in 0.18 mum CMOS technology. The third harmonic is controlled by Biasing while the second harmonic is limited by employing the differential structure. It delivers a power gain of 19.7 dB at the input power of -12 dBm with power added efficiency (PAE) of 43%. The second and third harmonics are -35.1 dBc and -36.0 dBc. In order to drive a single-ended load, an off-chip balanced-unbalanced (balun) circuit is also designed and analyzed in this paper.
Keywords :
CMOS analogue integrated circuits; UHF power amplifiers; baluns; CMOS technology; amplifier biasing; baluns; differential structure; frequency 2.4 GHz; gain 19.7 dB; linear class C power amplifier; off-chip balanced-unbalanced circuit; single-ended load driver; size 0.18 mum; CMOS process; CMOS technology; Circuits; Communication system control; Equations; High power amplifiers; Impedance matching; Linearity; Microelectronics; Threshold voltage;
Conference_Titel :
ASIC, 2007. ASICON '07. 7th International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-1132-0
Electronic_ISBN :
978-1-4244-1132-0
DOI :
10.1109/ICASIC.2007.4415658
