Guiheng Zhang and  Wei Zhang and  Jun Fu and  Yudong Wang,  Design of 900 MHz High Gain SiGe Power Amplifier with Linearity Improved Bias Circuit.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2017, vol. 124(4). 443 - 447
    [viewed 20 October 2019]. Available from: https://publications.waset.org/pdf/10007199.