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| Modulation index for ASK modulation - RF Cafe Forums | ||||||
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Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
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Below are all of the forum threads, including all the responses to the original posts. IR Post subject: Modulation index for ASK modulation Posted: Mon Jul 10, 2006 7:44 am Site Admin Joined: Mon Jun 27, 2005 2:02 pm Posts: 373 Location: Germany Hello, Can anyone elaborate about the modulation index for ASK modulation. I tried to look for it in Google but couldn't find out a clear information. Thank you all. _________________ Best regards, - IR Top fred47 Post subject: ASK modulation indexPosted: Mon Jul 10, 2006 11:43 am General Joined: Wed Feb 22, 2006 3:51 pm Posts: 104 The modulation index for AM (and ASK is a subset of AM) is more often called the modulation percentage, but given as a straight number. Some formulas: MI = (Vmax - Vcarrier)/Vcarrier MI = (Vmax - Vmin)/(Vmax + Vmin) So the most common form of ASK, On-Off Keying, has an index of 1. Good Luck! Fred | ||||||
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