downconversion cmos mixer

[maia_ardz]

i'm doing RFID 13.56MHz downconversion mixer, can anybody suggest me the best topology to use. I currently have the single-balanced mixer in mind. does anyone has relevant documents, pls help me. thanks.

 

[GOh]

i have read some information on Gilbert. You can search info on this.

 

[maia_ardz]

thank you for your help. i will search some more on gilbert. but i would really appreciate it if anybody can recommend me some documents on the technical part of the gilbert. most of the time, the documents are so general.