Wireless Networks Questions 2022

Running head: WIRELESS NETWORKS
Wireless Networks
Name of the Student
Name of the University
Author’s Note:

1
WIRELESS NETWORKS
Table of Contents
Question 1..................................................................................................................................2
Question 2..................................................................................................................................4
Question 3..................................................................................................................................5
Question 4..................................................................................................................................6
Question 5..................................................................................................................................7
Question 6..................................................................................................................................8
Question 7..................................................................................................................................9
Question 8................................................................................................................................10
Question 9................................................................................................................................11
Question 10..............................................................................................................................12
References................................................................................................................................13

2
WIRELESS NETWORKS
Question 1
Yagi, Horn and Cellular Antennas
i) Yagi Antenna: It is a type of directional antenna with numerous parallel
components within one specific line. This particular line is comprised of half-wave dipole
and are made up of metallic rods (Lu, Wang, Niyato, Kim & Han, 2014). It is consisted of a
single-driven component by connecting it to a receiver and transmitter with the help of a
transmission line.
The major advantages of a Yagi antenna include:
a) It is compact in its size as well as light in weight.
b) Yagi can offer wider bandwidth for proper utilization of folded dipole.
c) Unidirectional radiation patterns are also being offered by Yagi.
The main disadvantages of the Yagi antenna include:
a) High gain is not being offered by this antenna and the gain is only until 7 dB.
b) Yagi is highly sensitive to the frequency and this entire designing is obstructive in
nature.
ii) Horn Antenna: Horn consists of a flaring metal-wave guide that is being shaped
such as a horn to effectively direct radio-waves into a beam and these horns are being applied
as an antenna at UHF or microwave frequency, more than 300 MHz.
The major advantages of a Horn antenna include:
a) Horn antenna is simplified in construction and it helps in adequate directivity.
b) This type of antenna can offer bandwidth of approximately 10%.

3
WIRELESS NETWORKS
c) Horn antenna with the parabolic reflector disc could easily deliver the high gain.
The major disadvantages of a Horn antenna include:
a) The first disadvantage is that Horn antenna eventually radiates the energy within
spherical wave front shape.
b) The gain of this antenna is restricted to 20 dB and for incrementing the gain, the
horn length would become excessive.
iii) Cellular Antennas: The cellular antennas are antennas that have cellular enabled
mobile devices, in which the electronic communications equipment and antennas are being
placed effectively (Rangan, Rappaport & Erkip, 2014). A cell is being created within the
cellular networks. The examples of these antennas are LTE, CDMA and GSM.
The major advantages of a cellular antenna include:
a) A cellular antenna can provide data or voice services while roaming.
b) Cellular network is being utilized in areas, in which cables could not be laid out.
c) Maintenance of such network is much easier and thus up gradation becomes easy.
The major disadvantages of a cellular antenna include:
a) This type of network offers lesser rate of data in comparison to the wired networks
like DSL and fibre optics.
b) The total capacity of the network is low and it is dependent on multiple access
techniques and channels.
After analysing the strengths and weaknesses of three antennas, it is being analysed
that Cellular antennas would become the dominant player in the future of both medium as