A monopole antenna is a type of antenna that is in the form of a rod and is placed on top of a conductive plate and is usually perpendicular to it. The mentioned plane is called the earth plane. So the meaning of ground in this type of antennas is different from conventional ground. The power supply in these types of antennas is placed between the rod and the ground, and one end is connected to the rod and the other end is connected to the ground. This antenna is in front of the dipole antenna, which has two rods, and the power source is placed between those two rods.

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