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The most widely used antennas are the ½ wave dipole and ¼ wave monopole, mostly because their impedance is close to 50 Ω. The half wave dipole is a balanced structure with two arms. The monopole is an unbalanced structure with one arm suspended above a ground plane. The key takeaway is that the ground plane becomes part of the antenna.
PTM Published on: 2016-07-27
