Stats

Locked Locked
Replies 2
Subscribers 64
Views 14022
Members are here 0

This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

RF front-end simulation

Dear collegues,

I am trying to simulate an RF front-end (LNA+VCO+MIXER) in order to get performances such as conversion gain, noise figure, etc.

If I simulate only the LNA+MIXER and use a Vsin to emulate the behavior of the VCO I can perform a PSS+PNOISE+PAC and get all the desired performances.

However, If i use the "real" VCO, which is an autonomous circuit, then the PSS does not work correctly:

- If I simulate the whole front-end and give the fundamental frequency, then it does not get the exact VCO frequency, and I cannot get the performances.

- If I simulate the whole front-end and the PSS is enable for autonomous circuits, then it simulates the entire front-end as an oscillator, and I cannot get the performances.

Can anyone help me with this issue?

Best Regards,
Fabio

Parents

Niraj1717 over 7 years ago

Hello Sir,

I am trying to simulate a double balanced mixer.But I am unable to understand the simulations to be done i.e pss,pac,pnoise etc.

Your support would guide me complete my ME project.
Cancel
Vote Up 0 Vote Down

Cancel
Andrew Beckett over 7 years ago in reply to Niraj1717

A rather open ended question, but I suggest you look at <SPECTREinstDir>/tools/spectre/examples/SpectreRF_workshop/rfworkshop.tar.Z - unpack this (tar xvfz rfworkshop.tar.Z) and then look at the doc directory - there's a PDF on various analyses for Mixers.

Regards,

Andrew.
Cancel
Vote Up 0 Vote Down

Cancel

Reply

Andrew Beckett over 7 years ago in reply to Niraj1717

A rather open ended question, but I suggest you look at <SPECTREinstDir>/tools/spectre/examples/SpectreRF_workshop/rfworkshop.tar.Z - unpack this (tar xvfz rfworkshop.tar.Z) and then look at the doc directory - there's a PDF on various analyses for Mixers.

Regards,

Andrew.
Cancel
Vote Up 0 Vote Down

Cancel

Children

No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.