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INSTRUCTION MANUAL
AL-RE101
LOOP ANTENNA
SECTI ON 6
-
CALIBRATION
1912 1 E l T o ro R d
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Si l vera do, Ca lifo rni a 9 26 76
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(9 49) 459 -96 00
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co m-p o wer. com
Rev101617
6.1.1 Source
Equipment
The following subsections describe the type of equipment that will be
needed in order to perform calibration of the AL-RE101 Loop Antenna.
As current flowing through the transmitting loop antenna is monitored
during the calibration, the type of source equipment has no real
restriction; only that it be able to supply the desired current.
It is desirable from an efficiency standpoint that the output impedance of
the source be as low as possible. The greater the output impedance of
the source, the greater the power required to generate the same current.
Some typical examples of signal sources are given below.
•
Signal (or function) generator with a power amplifier, such as the
Com-Power ARI-300K Audio Power Amplifier.
•
Signal (or function) generator with power amplifier and output
transformer.
•
Signal (or function) generator with transformer
•
Signal (or function) generator with current amplifier
•
Power sweep generator
•
Network analyzer
•
Spectrum Analyzer with tracking generator
6.1.2 Measuring
Instruments
Any properly functioning, calibrated measuring instrument, or
combination of measuring instruments, having the proper input
impedance and operational specifications/capabilities for the
measurement functions for which it will be employed may be used for the
calibration. Typical types of instruments include oscilloscopes, spectrum
analyzers, EMI receivers, true rms volt meters, digital multimeters, etc.
6.1.3
Transmitting Loop Antenna
The Com-Power AL-RS101-TX Loop Antenna is the ideal antenna to use as
the transmitting loop during the calibration. Other transmitting loops may
also be used; however, the calibration-related calculations provided in
section 6.2 apply only to calibrations performed using the AL-RS101-TX
Loop Antenna.
6.1.4
Precision 1-ohm Series Resistor
This is a standard accessory provided with the Com-Power RS-101-TX Loop
Antenna. The resistor must be a precision, 1% tolerance resistor with
sufficient power rating.
6.1.5
RF Current Probe
Any properly functioning, calibrated current probe having appropriate
operational specifications/capabilities for the measurement functions for
which it will be employed may be used for the calibration.
