An isotropic radiator is an idealized theoretical lossless antenna that radiates equal intensity in all directions. It is also known as an omnidirectional antenna. The term "isotropic radiator" is often used in electromagnetic compatibility (EMC) to describe an antenna or source that radiates equally in all directions. How is isotropic radiator different from real antenna? An isotropic radiator is an idealized theoretical antenna that radiates power equally in all directions. A real antenna will never achieve this perfect isotropic radiation pattern, but some antennas come close. For example, a dipole antenna has a fairly isotropic radiation pattern in the far field. This means that it radiates power equally well in all directions perpendicular to the antenna, but not necessarily in the directions parallel to it.

##### What is the gain of an isotropic radiator?

The gain of an isotropic radiator is defined as the ratio of the intensity of the radiation in a given direction to the total intensity emitted by the radiator. An isotropic radiator is a theoretical point source that radiates equally in all directions. The gain of an isotropic radiator is therefore 1 in all directions.

#### What is meant by isotropic source?

In physics, isotropic sources are those that emit radiation equally in all directions. The term is most often used in reference to electromagnetic radiation, such as light or radio waves. Sunlight is an example of an isotropic source, as it emits light equally in all directions. What is isotropic and anisotropic? Isotropic and anisotropic materials are those that have different properties in different directions. Anisotropic materials have properties that vary depending on the direction in which they are measured, while isotropic materials have the same properties in all directions. What is the difference between homogeneous and isotropic? Homogeneous means that the composition of the material is the same throughout. Isotropic means that the material has the same physical properties in all directions.