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Four transistor model for rectifier design

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shaikss

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Four transistor cell of Rectifiers

Hi,

Attached is the circuit for rectifier and input,output waveform of the same.
I have given peak-peak of 1.5V to the rectifier as input and the output is measured at the drain's of PMOS as High and drain's of NMOS as low.
When I slowly increased the cap from 1pf to 200pf, I got some errors relating to diagonals at Jacobian point, stopping the spectre to simulate further.
Can you please let me know what should I do in order to eliminate the error?

Moreover, when the input voltage is in the order of few mV like 75mV Pk-Pk, rectified output is almost Nill and when I slowly increase the vol, the output voltage is slowly rising but I find ripples.
Once the input voltage crosses 1V, then I find some mV of rectified output voltage.

This design of this rectifier is used for RFID applications.
Can you please let me know how to proceed further.
 

Attachments

  • rec.png
    rec.png
    71.3 KB · Views: 100
  • 100ns_1000mv.png
    100ns_1000mv.png
    8.5 KB · Views: 95
  • 100ns_1500mv.png
    100ns_1500mv.png
    10 KB · Views: 99
Last edited:

Hi,

Please someone tell me how to proceed further.


Thanks
 
Last edited:

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