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Polarization loss factor in dB when two linear polarized antennas are rotated by an angle 45° is ___

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Polarization loss factor in dB when two linear polarized antennas are rotated by an angle 45° is ___

(a) 3dB

(b) -3dB

(c) 0.5dB

(d) -0.5dB
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The correct choice is (b) -3dB

For explanation: The polarization loss factor due to mismatch if the two linear polarized antennas are rotated by an angle ∅ is given by PLF = cos^2∅.

⇨ PLF = cos^2∅=cos^2 45=0.5=-3dB.
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