CP400P Wireless Communication and Networks
Radiation Patterns
Objectives
- To measure the normal variations in wireless signal.
Equipment
Procedure
Measuring Normal Power Variation
Before you can analyze variations in meter readings to
look for effects, you need to determine a baseline; in
other words, you need to see how much variation is normal, and not
caused by any variations in position, distance, etc.
- Set the meter in a specific location where you can read it
without touching it.
- Record at least 10 consecutive readings on the meter. Try
not to move around, so that changes are not due to anything you
are doing.
- Determine the average, standard deviation, and standard
deviation of the mean for the readings.
- Now try holding the meter in the same place, and again Record
at least 10
consecutive readings on the meter. Try
not to move around, so that changes are not due to anything you
are doing.
- Determine the average, standard deviation, and standard
deviation of the mean for the readings.
Using the standard deviation of the mean of each set of
readings as the uncertainty in the average, did the two averages
agree with each other? In other words, did it matter whether you
were
holding the meter or not? Keep this in mind for future
measurements.
Before you leave the lab, have the lab instructor
sign your lab notebook immediately after your last entry.
