Question: 8 . HEMT is often used for high - gain, low - noise amplifiers. Please indicate the features of HEMT's device structure that lead to

8. HEMT is often used for high-gain, low-noise amplifiers. Please indicate the features of HEMT's device structure that lead to such a good performance. (10\%)
9. Why do we like to use SiGe-base HBT's rather than Si MOSFET's for RF amplifier design? Please list as many reasons as you can. (10\%)
8 . HEMT is often used for high - gain, low -

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