EVM system design/calculation - RF Cafe Forums
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Post subject: EVM system design/calculation
Unread postPosted: Mon Jun 13, 2005 6:54 am
Joined: Mon Jun 13, 2005 6:49 am
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
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) !
Unread postPosted: Mon Jun 13, 2005 1:15 pm
Try systemview from eaglware-elanix