What is The Difference Between a Loop Antenna and a Folded Dipole Antenna?

A loop antenna consists of a closed loop of wire or conductor. When an RF signal passes through the loop, it induces a current in the conductor. This current, in turn, radiates an electromagnetic wave. Compact size, good efficiency at lower frequencies, and can be easily mounted in various orientations. May have lower gain compared to dipole antennas, especially at higher frequencies. A folded dipole antenna consists of two parallel conductors connected at their ends. One of the conductors is fed, while the other acts as a parasitic element. The parasitic element extends the antenna's effective length and improves its impedance matching to the feedline. Higher input impedance, improved bandwidth, and better efficiency compared to a simple dipole. May be slightly larger and more complex to construct than a loop antenna.