Designing Mixer A 2Ghz : using Dualgate

I want to design a mixer working at about 2 Ghz, I decided to go for active mixer. for avoiding matching problem I read that it is better to use dual gate. I tried to find Dual gate suitable for 2Ghz but I didnt find any. Probably my searching wasnt that good. Does anyone know a suitable transistor ?


and also Why cant we use 2 cascoded transistor instead of using dual gate? is it possible?

P.s.
In my university it is used to use the passive mixer so I wanted to do something different so I chose Active mixer

Is this an analog or digital signal? If it's analog, a current feedback amplifier might be your best bet, as they're designed for radio frequency applications.
For digital signals, a simple AND gate would be be much better, simpler, and cheaper.
If you don't have an AND gate, 2 schottky diodes would also work great.

Why don't you try to implement a Gilbert Cell Mixer by using " Matched Biploar Pairs " at the market ? Because at 2GHz, Double Gate MOSs wouldn't work well..
They are for up to typically 500MHz.

@geneisxie: I am not sure about digital or analog.

@BigBoss: I should design it for a transceiver and I checked Gilbert Cell Mixer and it seems to me that it is not for transceiver but for receiver.
because in that design IF is connected to collector and RF is connected to base. so it is not useful for transceiver.

Some question:
1. Is it possible to use Gilbert Mixer also for transceiver ?
2. In which situation I should go for Passive Mixer and when I should go for Active mixer?
3. I am trying to simulate Noise Analysis My block circuit by ADS. And I don't know whether I should use Harmonic Balance Simulation or AC simulation?

AC simulation has an option for frequency conversion and it is mentioned in Agilent document that AC simulator support frequency conversion so we can use it for mixer.
I tried but I got an error.

I searched more and I found that it is possible to do that with HB simulation. now I am confused what I should do? any idea?

-Gilbert cell mixers are of course appropriate for transceiver systems.Check a proper configuration out again..
-If you need gain and your LO level is not sufficient ,you should use active mixers.Harmonic suppression is better and nonlinearity is comparable..
-AC analysis is small signal analysis and all components are linearized around operating point.It won't give you large signal noise behaviour of the circuit.
-HB simulation is also used to analyse Noise Figure by using nonlinear models of active devices.For more information see examples in ADS..