Calculate the impedance of the antenna and its efficiency

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Reference no: EM131008957

Application: >J2 dipole. A half-wavelength antenna is made of copper wire with conductivity a = 5.7 x 10⁷ Sim. The antenna is 3-mm thick and 1.5-m long.

(a) Calculate the impedance of the antenna and its efficiency when radiating in free space.

(h) In an attempt to reduce the impedance and increase efficiency, the antenna is made ofa copper tube, 12-mm in diameter. What is the efficiency of the antenna? Assume current flows entirely within one skin depth, on the surface of the tube.

Reference no: EM131008957

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