need help about GPS RF front-end chip design

hey, guys

can you give me some advice about how to design a Zero IF GPS receiver chip?

(1) the system structure consideration

(2) typical schemetic design consideration for overcoming the disadvantages of Zero IF GPS front-end chip

(3)the chip back-end design consideration

(4)process foundry selection consideration

thanks in advance

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better find a textbook

you are right, but how can i find the book? someone can offer the related links or upload the book? thanks

anybody can help me?