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1- A one-meter long wire antenna is center fed by a source with frequency 30 MHz :

i- find the wavelength and the current distribution along the antenna .
ii- find the radiation resistance.
iii- if the source is now replaced by another with frequency = 150 MHz , find the new current distribution & the radiation resistance
iv- compare between the results for the two sources above and comment.
v- design a non-uniform linear array to have the pattern :

E = [(sin(3Ψ/2))/(sin(Ψ/2))]2

where Ψ=πcosφ , and φ is measured from the array line , namely find the number of elements , the element spacing , and the current amplitudes , also what is the relative side lobe level ? (note this one been answerd but there was a mistake from me in typing the question so i resubmit it here)

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M9856321

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