For onsite interview, they may change the interview schedule three times in one hour and when you get the final schedule you may only have 10min to be there. Questions a little bit weird ex. why you use noise power referenced to signal power in 1Hz BW in stead of 2Hz BW to define phase noise? why it is called IIP3 instead of IIP2 or IIP4? The interview results depend somewhat whether they like you. One engineer told me they did not want people from the company I worked before. However, they hired my friend who worked in same company with me before.