[SOLVED] transistor for lna at 11Ghz

[eladg]

hello i need to design "THE LNA" at 11GHz. The noise fugure should be less then 0.65 dB at room Temp.
i look at 3 atransistors "mgf4941al" "atf360772a" and "nec 32484a" . are there more transistor that i can "play with" ?
I look at lna that are on my roof for sat. it writen there n.f. =0.2 dB !! is there way to design those kind of lna, or thay Measure it after drinking a Bottle of vodka ?

best regards Elad

 

[tpetar]

See this table, also you have datasheets there:

https://www.rfmw.com/Manufacturers/mitsubishi/FP/Transistors/?type=63&manf=375&NavType=1&sd=true


You have here up to 26GHz

 

[vfone]

hello i need to design "THE LNA" at 11GHz. The noise fugure should be less then 0.65 dB at room Temp.
i look at 3 atransistors "mgf4941al" "atf360772a" and "nec 32484a" . are there more transistor that i can "play with" ?
I look at lna that are on my roof for sat. it writen there n.f. =0.2 dB !! is there way to design those kind of lna, or thay Measure it after drinking a Bottle of vodka ?

best regards Elad

I don't think that exist on the market a stand alone transistor with noise figure lower than 0.3dB at 11GHz.
You are right about noise figure of LNBs for satellite receivers. I've seen a 10 bucks Chinese satellite LNB claiming 0.1dB NF, which I think it's pure marketing strategy. Or better saying, cheating with customers.

 

[tony_lth]

What's the gain required? If gain is high, then NF maybe decreased.
Japan transistor is good for very good yield results.