Folded Dipole Antenna

Higher input impedance, from 73 ohms to around 300 ohms, compared to conventional half dipole antennas
Draws lower current from source
Matches well with characteristics impedance of transmission lines
Better bandwidth characteristics than a single dipole of the same size
Offers superior signal/noise ratio performance, good signal reception
Receives the desired signal from a band of frequency without losing signal quality



A Folded dipole antenna is a half-wave dipole antenna with an additional parallel wire or rod connecting its two ends and folded to form a cylindrical closed shape. One pole (rod) is continuous with a length of λ/2 and the other is split at the center. During transmission, the antenna is fed at the center terminals of the two rods. Similarly, while receiving, the antenna receives the signal from these two center terminals. Folded dipole antennas usually operate in the frequency range from 3 kHz to 300 GHz and are ideal for use where an optimum power transfer and large input impedance is required.


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