Com-Power AH-220 - Manual

Features
Frequency Range: 200 MHz to 2 GHz
High Power Handling
Transmit or receive capability
Three year warranty
Application
The AH-220 horn antenna was specifically designed
to make EMC measurements. This antenna is suit-
able for making EMC measurements per EN 61000-
4-3 and MIL-STD 461/462 test specifications.
The distinct advantage of the AH-220 horn antenna
is its high gain. This reduces necessary power re-
quirement for generating high field strengths for
immunity testing. High gain also increases antenna
sensitivity to low level signals during emissions
testing. The gain of this horn antenna is at least 4.6
dBi over the entire frequency range.
For immunity testing, the input power requirement
P in Watts to generate E Electric Field Strength in
V/m at a distance in D meters can be calculated by
using the following formula:
P = E 2 x D 2 / 30 x Numeric Gain
G = 20 log F -29.79- AF
G =10 log (Numeric Gain)
Where
G = gain in dBi
F = Frequency in MHz
AF = antenna factor in dB
Description
The model AH-220 is a linearly polarized broad-
band double ridged horn antenna operating in the
frequency range of 200 MHz - 2000 MHz.
The AH-220 Horn antenna is an alternative to bi-
conicals and log periodic antennas operating in the
same frequency range for emissions and immunity
testing where high gain is needed and the large
size of the antenna is not an important factor. For
immunity measurements the AH-220 can accept
up to 800 Watts input power in a continuous mode.
For easier handling, the AH-220 is a constructed us-
ing light weight aluminum with a corrosion resistant
conductive coating. The mounting bases of Model
AH-220 are located near the antenna’s center of
gravity. Two mounting bases are provided for ver-
tical and horizontal polarizations. Each mounting
base has a 1/4 inch x 20 threaded hole. The antenna
can be purchased with an optional Com-Power an-
tenna tripod (Model AT-220) which has a mounting
head with a matching screw.
Each antenna is individually calibrated before ship-
ment. The test data will be shipped with the antenna.
Horn Antenna
AH-220
Com-Power Corporation 114 Olinda Drive, Brea, California 92823 (714) 528 - 8800 www.com-power.com