Question

Question No 1 (PLO – 1, CLO – 1) [20+40] Part-I Determine the HPBW and FNBW (in radians) of given normalized radiation intensity: U(?) = cos^2 ? cos^2(2?) ; (0 ? ? ? 90°, 0 ? ? ? 360°) Part-II The normalized radiation intensity radiated by an antenna is given by: U(?, ?) = { sin ? cos^2 ? 0° ? ? ? 180°, 90° ? ? ? 270°; 0 Elsewhere The maximum of the radiation intensity occurs towards ? = 90° and ? = 180°. Find the: (a) Exact maximum directivity (in dB). (b) Maximum directivity (in dB) using Kraus' approximate formula. (c) Maximum directivity (in dB) using Tai and Pereira's approximate formula.

          Question No 1 (PLO – 1, CLO – 1) [20+40]
Part-I
Determine the HPBW and FNBW (in radians) of given normalized radiation intensity:
U(?) = cos^2 ? cos^2(2?) ; (0 ? ? ? 90°, 0 ? ? ? 360°)
Part-II
The normalized radiation intensity radiated by an antenna is given by:
U(?, ?) = { sin ? cos^2 ?  0° ? ? ? 180°, 90° ? ? ? 270°; 0 Elsewhere
The maximum of the radiation intensity occurs towards ? = 90° and ? = 180°. Find the:
(a) Exact maximum directivity (in dB).
(b) Maximum directivity (in dB) using Kraus' approximate formula.
(c) Maximum directivity (in dB) using Tai and Pereira's approximate formula.

Question No 1 (PLO – 1, CLO – 1) [20+40]
Part-I
Determine the HPBW and FNBW (in radians) of given normalized radiation intensity:
U(?) = cos^2 ? cos^2(2?) ; (0 ? ? ? 90°, 0 ? ? ? 360°)
Part-II
The normalized radiation intensity radiated by an antenna is given by:
U(?, ?) = sin ? cos^2 ? 0° ? ? ? 180°, 90° ? ? ? 270°; 0 Elsewhere
The maximum of the radiation intensity occurs towards ? = 90° and ? = 180°. Find the:
(a) Exact maximum directivity (in dB).
(b) Maximum directivity (in dB) using Kraus' approximate formula.
(c) Maximum directivity (in dB) using Tai and Pereira's approximate formula.

Added by Evan M.

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