hey my friend dapu....other people here have already tried so much to clear things but I want to do my bit.... man you want to go with only specific chapters of analog or any basic circuit designing course...to make a completely new design. first of all this is not possible brother. the things started with maths, then quantum mechanics followed it, which developed a better knowledge of electrons behavior. people used it to invent transistors that changed this whole world of machines. then later invention of vlsi circuits, processors to be more precise, set up this whole industry to the view what it seems today. so all of this is not that easy my friend.
all those engineering branches are result of great researches and hard work. so one can't master all of them. specializing any of them need much more efforts .designing electronics hardware is not a job of cs guy, in general, and if one really wants to design one, one will have to go through all of these details. no short-cut is available here. and the thing that you are not satisfied with what you have learned in college suggests that you should go through those courses again and in more detail, with better books, more practice, more hardware experience, more time, more dedication and so on. the things that you see working today is not just the result of learning few chapters. even a single common mobile phone includes so much of research work behind its design and different companies are having different units for it which is more commonly known as R&D units or research and development units and my friend they all have research scientists, PHDs and so on for that work. so no shortcut my brother. and what engineering universities teach here is clear to all of us and one definitely need his/her own efforts to gain something .
to sum up, first of all make your path clear. either keep going with Comp. science things, specialize them. or enter electronics, which is much more detailed than what it seems to you( you may also have to go later with that quantum mechanics thing, that wave theory, heisenburg principle and so on) but if you really keep going, you'll surely succeed one day.good luck