Anyone knows how to design a wideband LNA? Any good resource?

Hi,

for wideband i think you have the choice of a few different architectures like distributed amp (ultrawide band), common gate, resistive degeneration with shunt feedback, multiband (dual band etc).

For low power CMOS design I think a lot of groups published designs using the resistive degeneration with shunt feedback topology, but there are also a few common gate with stagger tunning which get good results. Common gate is also quite easy to design and I think has better bandwidth than the feedback topology.

see this paper for an idea of the design...

"A Novel CMOS Low-Noise Amplifier Design for 3.1-10.6 GHz Ultra-Wideband Wireless Receivers" Yang Lu, Kiat Seng Yeo, Alper Cabuk, Jianguo Ma, Manh Anh Do, and Zhenghao Lu

Aaron