Explain half dipole antenna ( Resonant antenna ) with its radiation patteren. 

1 Answer

Half wave dipole antenna

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Explanation: 

1. It is a resonant antenna

2. It is exact half wavelength (λ /2) long & open circuited at one end.

3. The dipole antennas have lengths λ /2 , λ , 3 λ /2 etc. which are all multiple of λ /2.  Hence they are resonant.

4. In half wave dipole antennas the forward waves & reflected waves exist. Hence radiation pattern is bidirectional. 

The radiation pattern of half wave dipole antenna is –

image

The radiation pattern

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