design an ordinary end fire uniform linear array with only one maximum so that its directivity is 20 dB (above isotropic). The spacing between the elements is lambda/4 and its lenth is much greather than the spacing. Determine the (a) the number of elements (b) overall length of the array (in wavelengths) (c) approximate half-power beamwidth(in degrees) (d)amplitude level (compared to the maximum of the major lobe) of the first minor lobe (in dB) (e) progressive phase shift between the elements (in degrees)

design an ordinary end fire uniform linear array with only one maximum so that its directivity is 20 dB (above isotropic). The spacing between the elements is lambda/4 and its lenth is much greather than the spacing. Determine the (a) the number of elements (b) overall length of the array (in wavelengths) (c) approximate half-power beamwidth(in degrees) (d)amplitude level (compared to the maximum of the major lobe) of the first minor lobe (in dB) (e) progressive phase shift between the elements (in degrees)

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 4.2CYU: Check Your Understanding For the experiment in Example 4.2, at what angle from the center is the...

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