f********e
发帖数: 195 | 1 Apple RFIC is hiring. I did not get an offer. Here are the interview
questions. Hopefully they are helpful for you.
I'm not sure apple is doing wifi or not. Currently they are using other
companies' chip. But definitely they want to do some work.Maybe for
customized low power
wireless chips
Here's are the questions:
1, How to design an LNA, how to improve linearity? how to reduce NF?
A: high vov, gm3 cancellation ,feedabck etc. high ft, noise cancellation,
higher current etc.
2, MOS transistor noise
A: thermal noise, gate induced noise, flicker noise, shot noise
3, which parameter is related to gate induced noise? how to reduced rg?
A: Cgs, smaller w
4, why blocker increases NF?
A: 1, saturate the font end, reduce gain
2, intermodulation, cross modulation,
3, reciprocal mixing
5, IM2 impact of the Rx. He will ask two tones spacing at 1MHz. Then you may
be asked IM3 or IM2 matters?
6, PA design
A: load line method, load pull etc
Above are the phone screening questions. I will upload the full interview
questions and answers if you are intersted | a**********y
发帖数: 233 | 2 真是非常赞阿，可惜我不是做rf的
不知道你是怎么拿到interview的。是网投么？还是内部推荐
如果是网投的话，你多久收到消息的。
我有几个职位投了大半年了，都没啥消息
,
【在 f********e 的大作中提到】
: Apple RFIC is hiring. I did not get an offer. Here are the interview
: questions. Hopefully they are helpful for you.
: I'm not sure apple is doing wifi or not. Currently they are using other
: companies' chip. But definitely they want to do some work.Maybe for
: customized low power
: wireless chips
: Here's are the questions:
: 1, How to design an LNA, how to improve linearity? how to reduce NF?
: A: high vov, gm3 cancellation ,feedabck etc. high ft, noise cancellation,
: higher current etc.
| b*******r
发帖数: 1130 | 3 very thankful, very interested, please upload more interview questions :)
,
【在 f********e 的大作中提到】
: Apple RFIC is hiring. I did not get an offer. Here are the interview
: questions. Hopefully they are helpful for you.
: I'm not sure apple is doing wifi or not. Currently they are using other
: companies' chip. But definitely they want to do some work.Maybe for
: customized low power
: wireless chips
: Here's are the questions:
: 1, How to design an LNA, how to improve linearity? how to reduce NF?
: A: high vov, gm3 cancellation ,feedabck etc. high ft, noise cancellation,
: higher current etc.
|
|
