CST – Computer Simulation Technology

Antenna Radiation Efficiency Tool

1 The equation used to calculate the antenna radiation efficiency.

Total antenna efficiency takes into account the reflection, conduction and dielectric losses of an antenna. The dielectric and conduction losses are difficult to compute and in most cases are measured. Even with measurements, they are difficult to separate and are usually lumped together to form the radiation efficiency (ecd). The radiation efficiency is defined as the ratio of the power delivered to the radiation resistance (Rr) to the power delivered to the radiation resistance and the conduction-dielectric resistance (RL), or in equation form as displayed above.


ecd = antenna radiation efficiency

Rr = radiation resistance

RL = resistance representing the combination of the conduction-dielectric losses.

Rate this Article

0 of 5 Stars
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
contact support

Your session has expired. Redirecting you to the login page...

We use cookie to operate this website, improve its usability, personalize your experience, and track visits. By continuing to use this site, you are consenting to use of cookies. You have the possibility to manage the parameters and choose whether to accept certain cookies while on the site. For more information, please read our updated privacy policy

Cookie Management

When you browse our website, cookies are enabled by default and data may be read or stored locally on your device. You can set your preferences below:

Functional cookies

These cookies enable additional functionality like saving preferences, allowing social interactions and analyzing usage for site optimization.

Advertising cookies

These cookies enable us and third parties to serve ads that are relevant to your interests.