3.1-10.6 GHz UWB CMOS Low-noise Amplifier

• Main Authors: Chia-Kuo Ma, 馬家國
• Other Authors: Christina F. Jou
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/25585787944863353194

碩士 === 國立交通大學 === 電機學院碩士在職專班電信組 === 96 === This thesis discusses the design and analysis of an ultra wideband low-noise amplifier. Resistive and capacitive loading with shunt-shunt feedback (LS-Cgd) can achieve input wideband matching. In order to obtain the wide-band gain, the shunt-series peaking inductor (Ld2-Lpk) is used to extend the bandwidth. A modified cascode structure is used to achieve the sufficient gain and isolation. In the meantime, the only one inductor (Lg) is used as input matching network, so the noise figure is good. The final stage is source follower for output matching. The UWB LNA measured result are as follows: The bandwidth is 3.1 ~ 10.6 GHz. The average gain is 9.9 dB. The noise figure is 3.9 ~ 4.9 dB. The input return loss is -7.7 ~ -12 dB. The input P1dB(min.) is -15.5dBm. The IIP3(min.) is -4.5dBm. The power consumption is 51.3 mW.