Mix frequency

I am doing superheterodyne projects. I have 2 frequency, one is AM frequency and another is Image frequency. How can i mix this 2 frequency together. I know that it can use op amp to mix it together but what op amp should use? Can give me a useful link too? Thanks.

An op amp can not be normally used as a mixer (modulator), only as an adder. A mixer requires a multiplier or other non-linear circuit. Google "RF mixer" for more info.