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Design >> RF Design >> Wideband LNA
https://designers-guide.org/forum/YaBB.pl?num=1140637203

Message started by RF_Guy on Feb 22^nd, 2006, 11:40am

Title: Wideband LNA
Post by RF_Guy on Feb 22^nd, 2006, 11:40am

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

Title: Re: Wideband LNA
Post by gemini42 on Jul 26^th, 2006, 1:51pm

Hi
See the book VLSI for wireless communications by B.Leung.There is good explanation and a design example,which would definitely help you.

Title: Re: Wideband LNA
Post by aaron_do on Jul 26^th, 2006, 7:17pm

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