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Simulators >> RF Simulators >> Quadrature in-Differential out upconversion mixer
https://designers-guide.org/forum/YaBB.pl?num=1181571401

Message started by wccheng on Jun 11^th, 2007, 7:16am

Title: Quadrature in-Differential out upconversion mixer
Post by wccheng on Jun 11^th, 2007, 7:16am

Dear all,

I have a quadrature input - differential output up-conversion mixer. I don't know the simulation setup. Could anyone teach me? From the Cadence manual, it uses a balun at the input port. So, the Port connects to the balun and gives out the differential input of the mixer. Now, my one is quadrature input. How could I do it?

Moreover, my mixer is up-conversion from DC to 1GHz. I could not use DC to do the simulation, Right? Is I use near DC frequency, for example 10MHz, for the simulation?

Thanks

wccheng

Title: Re: Quadrature in-Differential out upconversion mi
Post by ACWWong on Jun 11^th, 2007, 9:27am

You can get quadrature by declaring the relevant phase in the port. For large signal simulation (transient or pss) you can set initial phase for sinusoid. (For small signal analysis you can set ac phase or pac phase, for large signal you can set inital phase.... probably less relevant for you)

You are correct that DC simulation is not going to allow you to do an accurate simulation. You would need to run transient or spectreRF (pss etc.) analysis. I suggest you get some training on the tools.