Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

about THD(total harmonic distortion)

Status
Not open for further replies.
A

abcyin

Full Member level 4
Joined
Apr 15, 2005
Messages
236
Helped
12
Reputation
24
Reaction score
3
Trophy points
1,298
Activity points
2,855
:?:
I have two questions:

the first is : How to simulate the Harmonic Distortion in Spectre?
the second is : Can anybody tell me the formula of THD units in dB and in percentage?

Thx!
 

1. Just run transient and take the FFT.
2. THD=10log(V²h2 + V²h3 + ... / V²f) Basically it is the ratio of the total power in second and higher harmonics to the fundamental. You can find more in Johns&Martin Analog book.

To compute THD just use the function in the calculator.
 

    A

    abcyin

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top