Rev B
1
1. GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The AR RF/Microwave Instrumentation Model ATH2G18 Horn Antenna is a complete, self-contained unit
that is well-suited for either shielded room or free-space radiated emissions or radiated susceptibility testing
over a frequency range of 2–18GHz. The Model ATH2G18 has a power-handling capability of 50 watts (W)
with a minimum gain of 6dB at 2GHz, increasing linearly to more than 11dB at 18GHz.
This versatile antenna works equally well as a radiator for Radio Frequency (RF) susceptibility testing or as a
receiving antenna for RF emissions testing.
1.2 SPECIFICATIONS
Refer to the AR RF/Microwave Instrumentation Data Sheet at the end of this section for detailed
specifications for the ATH2G18 Horn Antenna.
1.3 INSTALLATION
Before installing the antenna, thoroughly inspect the unit for signs of any physical damage that may have
occurred during shipment. Read the following operating instructions in their entirety, and pay particular
attention to all
Caution
notes.
1.3.1
Connections
Cable losses, especially at the lower and higher frequencies, can be minimized by utilizing low-loss coax
cable. The cable should be terminated with a type SMA (M) connector in order to mate with the SMA (F)
connector provided on the antenna.
1.3.2
Power Amplifier Selection
When used in a shielded room, reflections and room losses will reduce the available microwave (MW) field.
AR recommends a design safety factor of 100% when selecting a MW power amplifier. Optimum
performance will be achieved when the Model ATH2G18 Horn Antenna is used with a broadband T-Series
Microwave Traveling Wave Tube (TWT) amplifiers available from AR/RF Microwave Instrumentation.
Summary of Contents for 10029201
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