Boonton PIM 31 User Manual Manual do Utilizador descarregar pdf (Página 79)

A visual example of intermodulation caused by two CW signals. Ideally, test

frequencies f1 and f2 should be at the edge of the transmit guard bands, so that

the IM3 products f

IM3L

and f

IM3H

fall at the edge of the receive band(s), usually

utilized as guard bands. This minimizes interference within the system under test

and also eliminates potential interference in other wireless bands

IM3 serves as an example. With IM3 as a result of PIM, other IM products (IM5,

IM7, IM9, IM11, …) will be present as well, and can impact base station

performance significantly.

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Boonton PIM 31 User Manual Manual do Utilizador Página 79