作者cpt (post blue)
看板comm_and_RF
标题Re: Cutoff frequency~
时间Sat Jul 7 10:30:52 2007
※ 引述《bnbnnancy (无尾熊)》之铭言：
: Hi
: I got a question~
: For a 0.18um and 0.8um technology MOSFET, which has a higher cutoff frequency?
: Thanks a lot!!
To characterize high-freq performance of a technology node
we usually use the figure of merit "unity gain freq" instead
of "cutoff freq". And from its definition it shouldn't be
surprising that it improves with shrinking channel length.
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 67.186.15.98
1F：推 obov:in short, cutoff freq=ft=unity gain freq 76.103.52.84 07/07 11:21
2F：→ obov:but i dunno how they measure fmax@@ 76.103.52.84 07/07 11:23
3F：→ cpt:i thought "cutoff freq" is where the gain 67.186.15.98 07/07 11:26
4F：→ cpt:starts to dop, while "ft" is where gain 67.186.15.98 07/07 11:26
5F：→ cpt:drops to zero...but whatever, should track 67.186.15.98 07/07 11:27
6F：→ cpt:each other :P fmax is where power gain=0 67.186.15.98 07/07 11:28