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https://designers-guide.org/forum/YaBB.pl Design >> RF Design >> Noise Figure vs. Frequency https://designers-guide.org/forum/YaBB.pl?num=1306422671 Message started by chris2312 on May 26th, 2011, 8:11am |
Title: Noise Figure vs. Frequency Post by chris2312 on May 26th, 2011, 8:11am I simulated a BJT and I noticed that the NFmin increases with increase of the operating frequency. Can somebody describe this effect ? Whats the reason ? Thanks. |
Title: Re: Noise Figure vs. Frequency Post by rfcooltools.com on May 26th, 2011, 1:43pm Chris2312, I believe you are observing a diminishing current gain at higher frequencies in the presence of a constant (or diminishing at a different rate) output shot noise. http://rfcooltools.com |
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