Custom Search

Chip Designing for ASIC/ FPGA Design engineers and Students

FULLCHIPDESIGN

Digital-logic Design... Dream for many students… start learning front-end…

Get Noticed:- Submit your own content to be published on fullchipdesign.com

Send it to fullchip@gmail.com

Third order Intermodulation products

Distortions in a system are represented with the help of Taylor series. Each term in Taylor series is represented as below.

F1 and f2 are the frequencies of two different inputs signals to the system.

Variable n can have any integer value

Value n=3 is of most interest because it results in signals that are very close to the desired signals

M is a variable which takes the values 0, 1, 2 and 3

m = 0, Third order distortion product =

m = 1, Third order distortion product =

m = 2, Third order distortion product =

m = 3, Third order distortion product =

STG1 or Stage 1 = Gain value as Gain1 and IP3 value as IP31

STG2 or Stage 2 = Gain2, IP32

STG3 or Stage 3 = Gain3, IP33

STG4 or Stage 4 = Gain4, IP34

Final IP3 = IP3_Total

STG2 or Stage 2 = Gain2, IP32

STG3 or Stage 3 = Gain3, IP33

STG4 or Stage 4 = Gain4, IP34

Final IP3 = IP3_Total