Com-Power AC-220 User Manual
Features
Broadband: 30 MHz - 2000 MHz
Minimizes antenna switching
Transmit and receive capabilities
Individual calibration
Three year warranty
Combilog Antenna
AC-220
Description
The AC-220 Combilog antenna is broadband antennas designed to operate in the 30 MHz - 2000 MHz
frequency range for electromagnetic compatibility
testing. The Combilog antenna combines the electrical
properties of a biconical antenna and a log periodic
antenna.
The antenna can be mounted to mast using four 1/4 x20
threads mounting holes on the bottom. During automated EMC testing to minimize vertical displacement
when changing polarity , an optional (A TC-400) fi xture
can be purchased with the antennna. This fi xture can
be mounted to the antenna mast cross boom.
For tripod mounting an optional adapter (ATC-100)
is also available.
All elements are constructed using aluminum with
corrosion resistant conductive coating. The rear
triangle elements can be removed for storage and
transportation.
Application
The Combilog antennas are designed for emissions
and susceptibility testing to verify compliance to
FCC, IEC, CISPR, F AA and MIL-STD specifi cations.
The main advantage of a Combilog antenna is that it
covers the frequency range of the Biconical and Log
Periodic antenna. This eliminates antenna switching
(typically at 300 MHz) and allows continuous sweep
measurement without a frequency band break. The
broadband matching network located in the rear improves antenna response at the lower frequencies.
For susceptibility testing the Combilog antenna can
be used in the in a shielded room for generating
electromagnetic fi elds. It can handle up to 500 Watts
input at its terminals.
Each Combilog antenna is individually calibrated. The
calibration data will be shipped with each antenna.
During radiated emissions measurement, the fi eld
strength (dBV/m) is calculated for frequency selected,
by adding the antenna factor dB/m to the output mea-
surement (dBV) displayed by the EMI meter.
Com-Power Corporation (714) 528 - 8800 www. com-power.com sales@com-power.com
Specifi cations
Frequency Range: 30 MHz - 2000 MHz (AC-220)
Power handling: 500 Watt max.
Gain: 5 dBi min. (200 MHz -2000 MHz)
Impedance: matched to 50 Ohm
Connector: Type N Female
VSWR: 2:1 average
Weight: 8 lbs. 3.6 kg
Dimensions ((L x W x H): 38 x 50 x 25 inches , 96 x 127 x 63 cm
T ypical Antenna Factors
25”
50”
38”
Typical Input Power Requirement in (Watts) at 1 meter antenna spacing to achieve fi eld (V/m)
Freq. 3 V/m 10 V/m
80 0.67 29.7
90 0.70 31.2
100 0.60 26.5
125 0.55 24.5
150 0.16 7.10
175 0.17 7.46
200 0.10 4.24
250 0.09 3.83
300 0.07 2.92
400 0.04 1.90
500 0.03 1.43
Specifi cation subject to change without notice.
All values are typical unless specifi ed.
Com-Power Corporation 114 Olinda Drive, Brea, California 92823 (714) 528 - 8800 www.com-power.com
Freq. 3 V/m 10 V/m
600 0.02 1.08
700 0.02 1.00
800 0.02 0.88
900 0.02 0.76
1000 0.01 0.64
1500 0.01 0.29
2000 0.01 0.25
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