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A commercially available axial mode helix antenna has six turns made of 095cm aluminum tubing supported by fiberglass insulators attached to a 38cm aluminum shaft The band of operation is

A commercially available axial mode helix antenna has six turns made of 0:95-cm aluminum tubing supported by fiberglass insulators attached to a 3.8-cm aluminum shaft. The band of operation is 300 to 520 MHz. The mechanical characteristics are as follows: length of helix, 118 cm; diameter of helix (center to center), 23.2 cm; and ground screen diameter, 89 cm.

 

(a) Determine the pitch angle α.

(b) Compute the gain in decibels at edges of the frequency band of operation

Jun 22 2020 View more View Less

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