论文信息 - 1.5–2.7 GHz ultra low noise bypass LNA

1.5–2.7 GHz ultra low noise bypass LNA

Bypass low-noise amplifier (LNA) can be used in the base station receiver to improve the dynamic range. It is difficult to achieve both ultra low noise at LNA mode and maintain good linearity at bypass mode simultaneously. In this work, we present the best performance bypass LNA with 0.5 dB of noise figure (NF), 20 dB of gain at 1.95 GHz and high OIP3 of 35 dBm for both LNA and bypass mode. Fabricated in 0.25um GaAs E/D pHEMT process, the LNA is based on enhancement mode pHEMT cascode topology and the switches are designed with the depletion mode pHEMT.

Jingshi Yao | Xiaopeng Sun | Barry Lin

[1] Edwin van der Heijden,et al. A 1.95GHz sub-1dB NF, +40dBm OIP3 WCDMA LNA with variable attenuation in SiGe:C BiCMOS , 2011, 2011 Proceedings of the ESSCIRC (ESSCIRC).

[2] Yun Wei,et al. Wide bandwidth GSM/WCDMA/LTE base station LNA with ultra-low sub 0.5 dB noise figure , 2012, 2012 IEEE Radio and Wireless Symposium.