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Experiment # 1: Microwave Transmission and Reception

The document describes an experiment on microwave transmission and reception using horn antennas, waveguides, and transmit/receive equipment. It details the procedure, which involved measuring received power at different transmitter-receiver distances both with one antenna moving and both moving. Tables of power measurements and graphs of power vs distance are presented. It was concluded that received power increases as distance between antennas decreases.

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Ayeshá Khán
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50 views5 pages

Experiment # 1: Microwave Transmission and Reception

The document describes an experiment on microwave transmission and reception using horn antennas, waveguides, and transmit/receive equipment. It details the procedure, which involved measuring received power at different transmitter-receiver distances both with one antenna moving and both moving. Tables of power measurements and graphs of power vs distance are presented. It was concluded that received power increases as distance between antennas decreases.

Uploaded by

Ayeshá Khán
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Experiment # 1

Microwave transmission and reception

1.1 Objective
i. To implement the microwave transmission and reception.

1.2 Apparatus
i. Horn Antennas
ii. Rectangular Waveguides
iii. Transmitter and Receiver Arm
iv. Modulated and demodulated trainers
v. Scale
1.3 Procedure
 First connect modulated trainer with antenna for transmission of signal to free space.
 Then connect demodulated trainer with antenna for receiving signal from free space.
 After all connection, measure the distance between two antennas.
 First measure the length of connectors and then note the length from connector to
antenna of both side and add the length of connector in it.
 Note the power of signal that show on demodulated trainer when both antennas are at
their extreme position.
 Then move just transmitter antenna on transmitter arm toward receiving antenna and
keep receiver antenna static at end of receiver arm thus distance between both
antenna reduce.
 Note the distance between two antenna and note the power. Repeat it ten times.
 Then keep transmitter antenna static at end of transmitter arm and move receiver
antenna on receiver arm toward transmitter antenna.
 Note the distance between two antenna and note the power. Repeat it ten times.
 Move both antenna toward each other on their respective arms and note the power at
10 different distances between them.
1.4 Observation
Table 1.1 Power of signal when transmitter antenna is moving

Distance Power
83.3 0.060
82.3 0.064
80.3 0.071
79.3 0.075
78.3 0.079
77.3 0.087
76.3 0.093
74.3 0.103
72.3 0.129
62.3 0.133

Table 1.2 Power of signal when receiver antenna is moving

Distance Power
83.3 0.060
81.3 0.069
79.3 0.080
77.3 0.087
753 0.096
73.3 0.100
69.3 0.104
65.3 0.129
55.3 0.172
48.3 0.212
Table 1.3 Power of signal when both antennas are moving

Distance Power
83.3 0.060
78.3 0.072
74.3 0.089
70.3 0.099
66.3 0.113
62.3 0.119
58.3 0.138
54.3 0.162
44.3 0.204
33.3 0.276

1.5 Graphs

Fig 1.1 Graph of power and distance when transmitter antenna is moving
Fig 1.2 Graph of power and distance when receiver antenna is moving

Fig 1.3 Graph of power and distance when both antennas are moving
1.6 Conclusions
Now we are familiar with microwaves and transmission and receiving of them. We have
concluded that when transmitter antenna was moving on its arm toward receiver antenna then
power of signal started increasing as distance between antennas reducing and similarly when
transmitter antenna was fix and receiver antenna was moving on its arm, power of signal
started increasing when distance between two antenna decreasing. When both antennas were
moving on their respective arm then distance between both antennas reducing fast and power
of signal start increasing with reducing of distance hence when distance between two antennas
less then power of signal is high and when distance between antennas increase then power of
signal is low.
HITEC UNIVERSITY TAXILA CANTT
ELECTRICAL ENGINEERING
WP&A

LAB REPORT 1
Microwave transmission and reception

Section A
Submitted To

Ma’am Mehwish Bibi

Submitted By
Sania Saeed

Fariha Saeed

Wajeeha Sajid

Reg No
17-EE-147

17-EE-088

17-EE-194

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