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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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EVM system design/calculation - RF Cafe Forums

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Pär Åhlund
Post subject: EVM system design/calculation
Unread postPosted: Mon Jun 13, 2005 6:54 am
Offline
Lieutenant

Joined: Mon Jun 13, 2005 6:49 am
Posts: 1
Hi
Do any of you have a recomendation regarding what software to us for making a link budget showing expected EVM (error vector magnitude).

Input: Should be data like drive level, phase/amplitude ripple in filter, compression point of amplifier and frequency error in mixer

Output: EVM

Sincerely/Pär


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Guest
Post subject: EVM
Unread postPosted: Mon Jun 13, 2005 12:59 pm

Most "budgets" have an assumption of linearity hiding in them somewhere.

The essence of EVM is that the greatest portion results from non-linearity. In fact, the EVM of a signal from different amplifiers with the same third-order intercept point can vary significantly.

Good Luck (and I think you'll need it) !


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Guest
Post subject:
Unread postPosted: Mon Jun 13, 2005 1:15 pm

Try systemview from eaglware-elanix


Posted  11/12/2012
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