Rev B
1
1. GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model ATH200M1G-1 High Gain Horn Antenna is a complete, self-contained unit which is well-suited for
either shielded room or free space testing over the frequency range of 200 to 1000 MHz.
It has a power handling capability to 10,000 watts with a minimum gain of 10dB at 200 MHz, increasing to over
18dB at 1000 MHz.
This versatile antenna works equally well as a radiator for RF susceptibility testing or as a receiving antenna for
emissions testing.
1.2 SPECIFICATIONS
Refer to AR RF/Microwave Instrumentation Data Sheet at the end of this section for detailed specifications.
1.3 PERFORMANCE DATA
Typical Model ATH200M1G-1 Antenna gain and VSWR curves as well as beam width (front and back) curves
are also included.
1.4 INSTALLATION
Before proceeding, thoroughly inspect the antenna for any signs of physical damage which may have incurred
during shipment. Completely read the following operating instructions, paying particular attention to all
CAUTION notes.
1.4.1
RF Connections
Cable losses, especially at the higher frequencies, can be held to a minimum by using low loss coaxial cable, such
as RG225 or RG393. Both of these cables have 7.5dB loss per 100 feet at 1000 MHz. The only difference
between these cables is the material used for the outer jacket. RG225 coaxial cable uses a fiberglass outer jacket
while RG393 has a Teflon outer jacket. Note that the cable selected must be appropriate for the power and
frequency required.
The coaxial cable should be terminated with the appropriate male connector (UG A/u or equivalent) in order to
mate with the female connector provided on the antenna. Refer to the AR Data Sheet for the connector used on
this antenna.
1.4.2
RF Power Amplifier
In shielded room, reflections and room losses will reduce the available field. AR recommends a design safety
factor of 100% in the selection of power amplifiers.
Optimum performance will be achieved with the Model ATH200M1G-1 Antenna when used in conjunction with
one of our broadband RF amplifiers, such as the 4000W1000B.
Summary of Contents for ATH Series
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Page 14: ...Model ATH200M1G 1 ii ...
Page 19: ...Rev B 5 2 TYPICAL CURVES 2 1 VSWR Model ATH200M1G 1 Antenna Typical VSWR ...
Page 20: ...Model ATH200M1G 1 6 Rev B 2 2 TYPICAL GAIN ...
Page 21: ...Model ATH200M1G 1 Rev B 7 2 3 E PLANE PATTERN FREQUENCY 200 MHZ ...
Page 22: ...Model ATH200M1G 1 8 Rev B 2 4 H PLANE PATTERN FREQUENCY 200 MHZ ...
Page 23: ...Model ATH200M1G 1 Rev B 9 2 5 E PLANE PATTERN FREQUENCY 300 MHZ ...
Page 24: ...Model ATH200M1G 1 10 Rev B 2 6 H PLANE PATTERN FREQUENCY 300 MHZ ...
Page 25: ...Model ATH200M1G 1 Rev B 11 2 7 E PLANE PATTERN FREQUENCY 400 MHZ ...
Page 26: ...Model ATH200M1G 1 12 Rev B 2 8 H PLANE PATTERN FREQUENCY 400 MHZ ...
Page 27: ...Model ATH200M1G 1 Rev B 13 2 9 E PLANE PATTERN FREQUENCY 600 MHZ ...
Page 28: ...Model ATH200M1G 1 14 Rev B 2 10 H PLANE PATTERN FREQUENCY 600 MHZ ...
Page 29: ...Model ATH200M1G 1 Rev B 15 2 11 E PLANE PATTERN FREQUENCY 800 MHZ ...
Page 30: ...Model ATH200M1G 1 16 Rev B 2 11 H PLANE PATTERN FREQUENCY 800 MHZ ...
Page 31: ...Model ATH200M1G 1 Rev B 17 2 12 E PLANE PATTERN FREQUENCY 1000 MHZ ...
Page 32: ...Model ATH200M1G 1 18 Rev B 2 13 H PLANE PATTERN FREQUENCY 1000 MHZ ...
Page 33: ...Rev B 19 3 OUTLINE DRAWING ...
Page 34: ...Model ATH200M1G 1 20 Rev B ...
Page 35: ...Rev B 21 4 POLARIZATION OF HORN ANTENNAS ...
Page 36: ...Model ATH200M1G 1 22 Rev B ...
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