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Good LNA choice - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.

Post subject: Good LNA choice Posted: Thu Nov 27, 2008 10:20 am


Joined: Mon Jul 18, 2005 12:55 pm
Posts: 8
Hi everybody!!

I am looking for a good LNA ( low NF, high IP3...) for VHF and UHF receiver design.Anybody has experience or knows a good one?

Is possible to improve the input return loss of LNA with external component structure?

If you have to choose for a new design double conversion receiver or direct conversion receiver which one you perform?



Post subject: Posted: Mon Dec 01, 2008 7:25 pm


Joined: Tue Jul 08, 2008 7:15 pm
Posts: 11
Location: Boulder Colorado

I have had good luck with Avago MGA-62563. It has .9dB NF, 33dBm OIP3, 22dB gain at 500 MHz. It also has current adjustment (via resistor value) to optimize for desired performance.

Good luck!!

- Mark -


Post subject: Re: Good LNA choicePosted: Thu May 07, 2009 5:57 am


Joined: Thu May 07, 2009 5:47 am
Posts: 1
Try the Amplifier search on
Just enter the specs and click on search. It searches components from over 100 manufacturers.
You can specify the NF and Gain.

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