For a 90° corner reflector antenna shown on the right, the source feed is a dipole antenna oriented along z axis with center at +x direction, so its approximated e-field pattern is 20 like sin, the feed-to-vertex distance s = (Assume 2 perfectly conducting sheet reflectors of infinite extent.) Please find: (a). Half Power Beam Width (HPBW₁) in the x-z plane (b). HPBW₂ in the x-y plane (c). Determine the directivity in dB based on Kraus Approximation y 0 Plate #1 X=S Plate #2

For a 90° corner reflector antenna shown on the right, the source feed is a dipole antenna oriented along z axis with center at +x direction, so its approximated e-field pattern is 20 like sin, the feed-to-vertex distance s = (Assume 2 perfectly conducting sheet reflectors of infinite extent.) Please find: (a). Half Power Beam Width (HPBW₁) in the x-z plane (b). HPBW₂ in the x-y plane (c). Determine the directivity in dB based on Kraus Approximation y 0 Plate #1 X=S Plate #2

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Antenna Characteristics

The antenna is an important concept in the domain of electronics and communication engineering. An antenna forms an integral part of many commonly used devices such as wireless modems, routers, game controllers, mobile phones, bluetooth devices, and so on. In simple terms, any wireless communication makes use of antennas to serve the purpose. An antenna, also known by the term 'arial', is an electrical device that converts electrical signals into electromagnetic waves or electromagnetic waves into electrical signals. An antenna contains a transmission line usually made up of co-axial cable, it then receives the signals and converts them into electromagnetic waves, which are then transmitted via space into their required destination. A communication system essentially makes use of two antennas, a transmission antenna, which converts electrical signals into electromagnetic waves, and a receiving antenna, which receives the electromagnetic waves and converts them back into electrical signals.

Question

For a 90° corner reflector antenna shown on the right, the
source feed is a dipole antenna oriented along z axis with
center at +x direction, so its approximated e-field pattern is
20
like sin, the feed-to-vertex distance s = (Assume
2
perfectly conducting sheet reflectors of infinite extent.) Please
find:
(a). Half Power Beam Width (HPBW₁ ) in the x-z plane
(b). HPBW₂ in the x-y plane
2
(c). Determine the directivity in dB based on Kraus
Approximation
y
Hint: Total Power Pattern = (Feed E-Field Patten × Array Factor)²
Plate #1
X=S
Plate #2

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Step 1: Calculating HPBW in x-z plane

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Step 2: Calculating HPBW in x-y plane

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Step 3: Calculating the directivity of the corner reflector antenna

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The answer according to the books is 0.49 mV/m