"Amplifier Research is the world's largest manufacturer of broadband power amplifiers for rf and microwave susceptibility/immunity testing. From 1 watt to 50 kilowatts, from dc to 18 GHz, they operate in cw, sweep, and pulse modes with no tuning required. They can withstand the most severe mismatch conditions without damage or shutdown.
"Accessories include antennas, leveling preamplifiers, TEM cells, field
strength sensors, fiberoptic telemetry systems, and directional couplers.
Like our amplifiers, these accessories are used in highly specialized areas
of rf testing, ranging from the development of new diagnostic methods for
the healthcare industry to destructive testing for military purposes.