7/29/2019 E1012 Test-01 ECE407 Solution

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ECE307 Antenna Engineering

Section E1012 (Set 01)1. The normalized radiation intensity of an antenna is rotationally symmetric in , and

it is represented by

a. What is the directivity (above isotropic) of the antenna (in dB)?b. What is the directivity (above an infinitesimal dipole) of the antenna (in dB)?

7/29/2019 E1012 Test-01 ECE407 Solution

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7/29/2019 E1012 Test-01 ECE407 Solution

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7/29/2019 E1012 Test-01 ECE407 Solution

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ECE307 Antenna Engineering

Section E1012 (Set 02)

1. The radiation intensity of an antenna is given by U(,) = cos4 sin2for 0 /2 and 0 2 (i.e., in the upper half-space). It is zero in the lower half-space.

Find the

a. exact directivity (dimensionless and in dB)b. elevation plane half-power beamwidth (in degrees)

7/29/2019 E1012 Test-01 ECE407 Solution

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