Using this method, typical insertion losses are about 1 dB, a 20% power loss.

In this case, the insertion loss is positive and measures how much smaller the signal is after adding the filter.

The isolation improvement is greater than the insertion loss added.

In case of extra loss the insertion loss is defined to be positive.

A high return loss is desirable and results in a lower insertion loss.

In addition to proper frequency selection, insertion loss is critical to testing.

Ripple is the variation of the filter's insertion loss in the passband.

Generally angle-polished connectors have higher insertion loss than good quality straight physical contact ones.

It also uses the fewest parts and has the lowest insertion loss (if passive).

If the resulting number is less than unity, an "insertion loss" is indicated.