1. A 4-element dipole array has element spacing of 2/2. The elements are excited by sources with the same magnitude but different phases as show in the figure below (y=0°). Assume the phase of element 1 to be zero. Sketch the resulting radiation pattern in the xy-plane using the graphical method. (hint: u= kodsin Osind+ y where 0= 90° in xy plane.) 1 20° Top View 2 3 4 مر23 22 /

Q: Compare the quarter-wavelength monopole and half-wavelength dipole in terms of their radiation…

A: We need to compare the given antenna .

Q: What will be the wavelength of a dipole antenna whose effective length is 8.2 m and radiation…

A: For an dipole antenna  Length=wavelength/2

Q: (b) Consider two half-wave dipole elements placed and oriented parallel to the z-axis. Determine the…

A:

Q: If a parabolic antenna is equipped with a 10 m diameter dish, then what will be the first null…

A: The angular separation between the two nulls on either side of the main lobe of the antenna's…

Q: Compare between short dipole and half wavelength dipole in terms of directivity, gain,  radiation…

A: short dipole The short dipole antenna is a dipole antenna with a wire length shorter than the…

Q: Q1/Explain why there's a difference between the impedance of a folded dipole and a A/2 dipole

A: Antenna arrays are a collection of various antennas. This results in the increase of amount of…

Q: Design a 5 elements Yagi antenna with operating frequency of 800MHz and dipole as driven element.…

A: The objective of the question is to design a 5 elements Yagi antenna with an operating frequency of…

Q: What will be the wavelength of a dipole antenna whose effective length is 8.5 mm and radiation…

A: The radiation resistance of a dipole antenna is given as Rrad=80π2hλ2 Ω--->(1) where h is the…

Antenna Array

An antenna array is a group of antennas joined together and arranged in a regular pattern to form a single antenna capable of producing radiation patterns that individual antennas cannot. As the antennas are constructed as an array, sufficient spacing and phase must be given.