ChinaCom2008-Wireless Communications and Networking Symposium

Research Article

A Low Power WiMAX LNA with Noise Cancellation

  • @INPROCEEDINGS{10.1109/CHINACOM.2008.4685022,
        author={Jian-Ming Wu and Neng-Kai Yang and Simon. C. Li},
        title={A Low Power WiMAX LNA with Noise Cancellation},
        proceedings={ChinaCom2008-Wireless Communications and Networking Symposium},
        keywords={Low noise amplifier (LNA) noise cancellation low power WiMAX.},
  • Jian-Ming Wu
    Neng-Kai Yang
    Simon. C. Li
    Year: 2008
    A Low Power WiMAX LNA with Noise Cancellation
    DOI: 10.1109/CHINACOM.2008.4685022
Jian-Ming Wu1,*, Neng-Kai Yang2,*, Simon. C. Li2,*
  • 1: Department of Electronic Engineering, National Kaohsiung Normal University Kaohsiung, Taiwan, R.O.C.
  • 2: Graduate Institute of Communication Engineering, National University of Tainan Tainan, Taiwan, R.O.C.
*Contact email:,,


This paper presents a low noise amplifier (LNA) employing a noise cancellion technique for WiMAX applications. The design of LNA is based on the input impedance matching with noise cancellation in 0.35-µm standard SiGe BiCMOS process. The chip size is equal to 0.84 mm × 0.18 mm. The crucial simulated results include that the noise figure (NF) is below 2.1 dB in the frequency range of 2 GHz to 3 GHz, the gain is equal to 13.3 dB at 2.6 GHz, the input 1 dB compression point (IP1dB) is -11 dBm, and the input-referred third-order intercept point (IIP3) is 2.5 dBm. The power consumption is 13.2 mW from the supply voltage of 1.8 V. The NF is improved by 0.73 dB using a noise cancellation technique.