Com-Power AD-100 User Manual

Tuned Dipole Antenna Set

AD-100

Features

Frequency range - 30 MHz - 1000 MHz

Low balun loss

Appropriate for EMI site calibration

Carrying case

Two year warranty

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 3x108/frequency in MHz/2). The length
can be achieved by attaching together pairs of xed
and adjustable elements (lower frequencies) or a pair
of adjustable elements (higher frequencies) to each
side of the antenna balun. The xed 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.

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 Conguration:

• Four antenna baluns

• Four xed 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 & certicate.

Com-Power Corporation (714) 528 - 8800 www. com-power.com [e-mail]

Specications

-5

0

5

10

15

20

25

30

0 100 200 300 400 500 600 700 800 900 1000

dB/m

MHz

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

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)

All values are typical, unless specied.
Specications are subject to change without notice.

Com-Power Corporation 114 Olinda Drive, Brea, CA 92823 (714) 528 - 8800 www.com-power.com