Find a SPICE Mixer Model for LTSpice Simulation

[f95toli]

Does anyone know of a reasonably good SPICE model of a mixer? Something that I can use in LTSpice?

It doesn't have to be accurate (meaning it doesn't need to be based on intermodulation tables) since all I am doing is trying to learn about feedback systems that contain RF elements. However, I would like it to have all 3 inputs (LO,RF and IF).

I know you can multiply two voltages in SPICE etc to emulate mixing, but that is a bit too basic for what I am doing.

 

[Bob S]

https://www.physicsforums.com/attachments/22095Here is a double-balanced mixer in LTSPICE. It is shown with RF and LO of 500 and 600 Hz inputs, and a 100 Hz IF output.
Bob S

 

[f95toli]

Thanks, that is just what I needed.
The attachment is not working for some reason, but I should be able to reproduce the circuit from the image alone.

 

[kalidasanin]

https://www.physicsforums.com/attachments/22095Here is a double-balanced mixer in LTSPICE. It is shown with RF and LO of 500 and 600 Hz inputs, and a 100 Hz IF output.
Bob S

Hai friend,
I couldn't download your attachment, can u able to repost it..
or could you please send it to my ID "kalidasascreator@gmail.com"

Thanks in Advance

 

[ebeabi]

Thanks, that is just what I needed.
The attachment is not working for some reason, but I should be able to reproduce the circuit from the image alone.

sir please send this attachment.needed for project.thanks in advance

 

[Bob S]

Here is copy of 4-diode double balanced mixer schematic (attached):* C:\Program Files\LTC\LTspiceIV\mixer-double-balanced.asc
L1 N001 0 10m
L2 0 N007 10m
L3 N004 0 10m
L4 Vout N008 10m
L5 N002 Vout 10m
L6 N005 0 10m
D1 N001 N002 BAT54
D2 N007 N008 BAT54
D3 N002 N007 BAT54
D4 N008 N001 BAT54
V1 N003 0 SINE(0 0.5 500 0 0 0 600)
V2 N006 0 SINE(0 .5 600 0 0 0 600)
R1 N006 N005 51
R2 N004 N003 51
.model D D
.lib C:\Program Files\LTC\LTspiceIV\lib\cmp\standard.dio
K1 L1 L2 L3 1
K2 L4 L5 L6 1
.tran 0 0.05 0 0.0001
* Mixer-double-balanced
* 500 Hz x 510 Hz --> 10 Hz
* Bob S\n11/14/09
.backanno
.end