弱问个问题，模拟IC和射频IC!

qitianhua

现在射频ic好像就是射频前端收发部分，
lna,vco,mixer,filter,pll,PGA,vgc,等，
主要用到高频电路部分，非线性电路，涉及到频率变换的问题，
模拟ic主要是线性电路，没有怎么涉及到频率变换的问题。

whxd123

FR IC is more advanced than analog IC!

ulsi123

RF has a higher speed than analog? No, that's not true. Analog design could be tens of GHz, and RF might be several MHz. The difference between analog and RF is getting smaller. Let me borrow the slides from UC Berkeley EE240 lecture notes:


“Analog” versus “RF”
• RF = “Analog with inductors”
• RF signal is usually narrowband (i.e., sinusoidal)
• Tuned circuit techniques used for signal
processing.
• RF impedance levels are relatively low
• Can’t make antenna impedance too high

• Analog impedances are high (low) for voltage
(current) gain.
• Voltage/current gain versus power gain.
• “Mixed-signal” analog is often discrete time
(sampled).

yangqinbiao

学习中~~~

wanglimoon

长见识了。。。。。

pop_mos

学习收藏了。

cyl921

膜拜！顺便拿分～

skiptoo

   

RF has a higher speed than analog? No, that's not true. Analog design could be tens of GHz, and RF might be several MHz. The difference between analog and RF is getting smaller. Let me borrow the slid ...
ulsi123 发表于 2009-10-8 23:28

                               
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berkeley的课程真的webcast真的很有价值，虽然还没看ee240,但看了ee140两遍了，都有不少的收获，我看的是Robert W. Brodersen 2004年的，讲的太棒了！

eebismarck

analog是基础，RF是对analog的应用，本质是一样的。

elisha

大家说的都很对啊