Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Question

2 (a) Describe isotropic, directional and omnidirectional antenna patterns.

(b) A cosecant squared receiving antenna has an actual projected area to the received beam of 10 square meters. The main lobe of its directional pattern has a length efficiency of 0.7 in the elevation and 0.5 in the azimuth directions. Determine the effective aperture of the antenna.

(c) The received signal strength in a certain vertically polarized antenna is 15 dB when receiving Left Hand Circularly Polarized (LHCP) electromagnetic wave. Computer the received signal strength using the given table 2.1 when,

I. The incident wave is vertically polarized

II. The incident wave is horizontally polarized

III. The incident wave is right hand circularly polarized (RHCP) IV. The received wave polarization is making an angle of 50 degrees with the vertical

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