• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. RF Design
  3. How to extract the Resistance and Reactance of a Inductor...

Stats

  • Locked Locked
  • Replies 4
  • Subscribers 64
  • Views 16367
  • 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

How to extract the Resistance and Reactance of a Inductor?

Alex Liao
Alex Liao over 9 years ago

Hi,

Giving the geometry, radius, width, and turns, the rough inductance(Lind) and quality factor(Qind) can be computed. This can be viewed from the property of a modelled Ind device (say, spiral_std_mu_z) in a given technology in the Cadence Schematic tool. By sweeping the geometry parameters, one can have the relationship between Qind and Lind like the attached plot (c).

As it is known that the inductor can be modelled in a parallel LC or Series LC network depending on its schematic.

Plot (a) and (b) also show that the Parallel (Rp) and Series Resistance (Rs) of this Ind are also acquired.

I am wondering are there such parameters, Rs and Rp, which can be viewed directly in Cadence (see different Rs and Rf by varying different geometry values or Lind values), like the Qind?

[i.e., How to get or verify the resistance or reactance of a Inductor in Cadence ?]

 I also did an AC simulation with the test circuit as attached:

I have noticed I can view several resistance via result browser, instance parameter,

rs1_1, rs2_1 rs_3_sub, rx_2_3_sub with r(Ohm) field like,  = 2.015.

Not sure if those are more or less related to what I want Rs or Rp.

Thanks,

Alex

  • Cancel
Parents
  • Alex Liao
    Alex Liao over 9 years ago
    Still nobody shed light on?
    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
Reply
  • Alex Liao
    Alex Liao over 9 years ago
    Still nobody shed light on?
    • 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.

© 2025 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information