Documents useful when designing SiGe HBT LNA

[J0hn]

Hi,

I was wondering whether is there any good application notes/links/tutorial that is useful for designing SiGe HBT LNA using inductive degenerated cascoded architecture?

I did read some of the papers, the first step they do is to fix the emitter length and determine the optimum collector current density, Jc at the lowest NF. The second step, they scale the emiter length so that the optimum source resistance is close to 50 ohm while maintaining the collect current density from step 1. After that, they will determine the emitter degeneration inductor based on the cutoff frequency biased at Jc. Lastly, the serie base inductor is added to cancel out the input reactance of the base-emitter capacitance. Collector resistor is added for stability and LC network is added at collector for output matching/DC block.

But i was wonder is there any good article/link so that i can read in depth on the designing and follow through because most of the stuff are found are summarised version.

Thanks and appreciated...

 

[khouly]

SiGe LNA

read the book RFIC design by claven pallet , the LNA chapter deals with bipolar design , it is really good book

khouly

 

[J0hn]

Re: SiGe LNA

Hi Khouly,

Thank you for the recommendation, but do you have any link for the book so that i could at least identify the cover for the book, as i can't seem to find it in Amazon or google search.... Is the author/title correct?

Thanks

 

[khouly]

SiGe LNA

check this link


khouly

 

[abbas_0612000]

Re: SiGe LNA

Similarly there is discussion on LNA in
1. Ravender Goyal,s book on high frequency ic desin
2. John Rogers book on Rf......
3; Lee ,s book