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What kind of work does 5G RF testing usually do?

2021-05-20 18:12:42     From:

5G RF testing involves checking devices to find out whether their wireless performance matches their specifications and also ensure that the devices are not emitting unwanted frequency waves. These devices are put in an isolated and shielded space to cancel interference or prevent their radio frequency waves from tampering with other devices. 5G RF testing usually involves accessing attributes such as TRP and TIS.

What are TRP and TIS?

TRP is the abbreviation for Total Radiated Power. For a device to successfully send data to a cellular network, RF power needs to be driven into the cellular antenna. A TRP is responsible for adding up all the power that the device is transmitting in a specific channel of the transmit band. Please take it as a complete set of measurements that occur in every direction at discrete intervals.


The Antenna gain parameter determines the ability of a device to transmit a signal successfully to a receiver. TRP is the figure of merit when measuring the transmission performance since it represents the overall gain.


TRP is the most preferred way for measuring the transmission signals of devices to base stations located far away. A device with a stronger TRP performs better compared to others further from the base station.


Conversely, TIS is the abbreviation for Total Isotropic Sensitivity. It is the sum of minimum power from all the directions of the cellular antenna.


What is Antenna Test?

An antenna test is carried out to find whether a device is performing efficiently. The two main attributes tested are TRP and TIS. The antenna sends and receives signals wirelessly. Hence it is important to measure how efficient an antenna performs.


Why are TRP and TIS called "Over the Air Performance" tests? 

TRP and TIS are called over-the-air performance because they measure the reception and transmission performance over a wireless network. Testing a device over the air means that there are no cables involved. Tests are executed using the device's radio. For this to be carried out, one must an RF anechoic chamber and specialized equipment.


Why Test TRP and TIS?

Testing TRP and TIS helps to determine whether the device will perform as intended. The following attributes :


Radiation patterns: This attribute determines the strength of radio based on the antenna's radiation patterns. 2D and 3D dimensional renderings make it easy to figure out the direction with the strongest frequency.


Antenna Efficiency: This refers to the ratio of power emitted by the antenna compared to the power delivered. It is measured in decibels (dB). Measuring how the antenna performs is very important before putting it into use.


Antenna Gain: This attribute combines antenna directivity with efficiency to determine the direction in which the antenna receives energy better.


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