Atec AD100 User Manual
Features
ValueTronics International, Inc. - www.valuetronics.com - 1.800.552.8258 or 1.847.468.8258
Frequency range - 30 MHz - 1000 MHz
Low balun loss
Appropriate for EMI site calibration
Carrying case
Two year warranty
Tuned Dipole Antenna Set
AD-100
Description
The Tuned Dipole set model AD-100 is a standard
antenna set which operates in the frequency range of
30 MHz to 1000 MHz for E-Field measurements. This
set consists of four baluns and was designed according
to American National Standard for Calibration of
Antennas for Radiated Emissions in Electromagnetic
Interference (EMI) Control C63.5.
The dipoles can be tuned to any frequency by selecting
the balun for that frequency and adjusting the length of
antenna elements to the half wavelength (calculated
by 3x10
achieved by attaching together pairs of fixed and
adjustable elements (lower frequencies) or a pair of
adjustable elements (higher frequencies) to each side
of the antenna balun. The fixed length elements were
designed to minimize drooping, especially at low
frequencies where the tuned dipole elements are long.
The dipoles are shipped with typical calibration data,
which is included in the manual. However, the dipole
set can be individually calibrated upon request. The
antenna set includes a custom carrying case.
8
/frequency in MHz/2). The length can be
Application
Although broadband antennas such as biconical and
log periodic antennas are used for day-to-day EMC
measurement, tuned dipoles antennas are still considered the standard antenna. Dipole antennas are not
considered the antennas of choice for sweep measurements, because it must be tuned at each frequency.
However, dipoles are preferable and in some cases
required for site attenuation measurements. It is also
considered the reference antenna that can be used to
calibrate other antennas operating in the same frequency range.
Standard Configuration:
• Four antenna baluns
• Four fixed length extension rods
• Two low frequency adjustable elements
• Two medium frequency adjustable elements
• Balun 1 base drilled to accept 1/4" x 20 threads
• Typical calibration data in the manual
Optional items:
• Clamp block ( ATC-001) for tripod mounting.
• Individual calibration data & certificate.
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Specifications
ValueTronics International, Inc. - www.valuetronics.com - 1.800.552.8258 or 1.847.468.8258
Antenna Type: Half wave tuned dipole
Frequency Range: Balun 1 (dB1): 30 MHz - 65 MHz
Balun 2 (dB2): 65 MHz - 175 MHz
Balun 3 (dB3): 175 MHz - 400 MHz
Balun 4 (dB4): 400 MHz - 1000 MHz
Impedance: 50 Ohm
Connector Type: BNC female
Element length assembled: min: 6 inches, 15 cm
max: 212 inches, 538 cm
Weight: 8 lbs, 36 kg
Balun 1, 2, 3 (30 MHz - 400 MHz)
Typical Antenna Factor
30
25
20
15
10
5
Factors (dB/m)
0
-5
0 100 200 300 400 500 600 700 800 900 1000
Maximum 212 inches, 538.5 cm
Minimum 12 inches, 30.5 cm
Maximum 11.7 inches, 29.8 cm
Minimum 6 inches, 15.2 cm
Balun 4 (400 MHz - 1000 MHz)
Frequency (MHz)
All values are typical, unless specified.
Specifications are subject to change without notice.
Last update: 1/02
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