# Is higher insertion loss better?

## Is higher insertion loss better?

Insertion loss is expressed in decibels, or dBs, and should be a positive number as it indicates how much signal was lost by comparing input power to output power. The lower the number, the better the insertion loss performance – an insertion loss of 0.2dB is better than 0.4dB.

## What is the difference between attenuation and insertion loss?

Attenuation, now referred to as Insertion loss, is the amount of loss incurred on a signal in a cable or link. It is measured in decibels (dB) and is dependent on distance and frequency. The attenuation of a cable or link will define the maximum distance a signal can travel and still be picked up at receiver.

## What is differential insertion loss?

Differential and single-ended insertion loss are used to describe the signal loss in a device, depending on the type of signaling used. Insertion loss in a differential interconnect or balanced network is called differential insertion loss.

## Why return loss should be less than 10 dB?

The return loss measures the reflected wave to the incident wave, that is RL = -20 log(Γ). So, a return loss of -10 dB means that the reflected wave is 10 dB lower than the incident wave. This is approximately equal to a reflection coefficient of 0.3, so 30% of the incident wave is wasted.

## Does insertion loss include return loss?

Microwave power is sent down a transmission line from the left and it reaches the component. The ratio of incident power to transmitted power, in dB terminology, is the insertion loss. The ratio of incident power to the reflected power, in dB terminology, is the return loss.

## Is high return loss Good?

Return loss is a measure of how well devices or lines are matched. A match is good if the return loss is high. A high return loss is desirable and results in a lower insertion loss. From a certain perspective ‘Return Loss’ is a misnomer.

## What is insertion loss vs return loss?

The ratio of incident power to transmitted power, in dB terminology, is the insertion loss. The ratio of incident power to the reflected power, in dB terminology, is the return loss.

## Why is return loss important?

Return loss is a measurement parameter that expresses how well a device or line matches. A high return loss is advantageous as it will result in a lower insertion loss.

## What is a good value for return loss?

The return loss scale is normally set up from 0 to 60 dB with 0 being an open or a short and 60 dB would be close to a perfect match.