Circular Edge-fed Patch

Image of the Circular Edge-fed Patch.

Microstrip antennas, also called patch antennas, are very popular antennas in the microwave frequency range because of their simplicity and compatibility with circuit board technology.

The circular patch has similar traits than the rectangular patch regarding gain, beam position and efficiency. The circular patch differs in the following manner compared to the rectangular patch: Smaller beam width, narrower bandwidth, and smaller physical area.