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designing an LC4/LC5 package for mm-devices using Eagle CAD tools? Answered

Hello every one,
Since i am totally new to PCB designing and all these stuff, I want to know few things about Eagle CAD tools
I will be designing a Frequency up-donwn converter as a University course project. out of many components selected for this project one of them is as follow.


i have gone through designing of the LC4 package, i hope it would be fine, still i would like to know how to creat ground of a package, creating outline boundries of package (is it from wire or from rectangle, polygon??)
and about symbols inside this package, i am confused about drawing them exactly and connecting them to each other (via wire or net or what??), should they be just symbol or e.g i have to draw even what is inside circuit of a mixer or amplifier etc..

I shall be very much thank for your kind help