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Approved for public release by AR RF/Microwave Instrumentation 050114
160 School House Road Souderton, PA 18964-9990 • 215-723-8181 • www.arworld.us
Model DC7351
Dual Directional Coupler
6,000 Watts CW
4GHz–8GHz
The Model DC7351 is a dual directional coupler with excellent frequency range and power handling
capability. The wide range assures flexibility in coupling medium power amplifiers to oscilloscopes, voltmeters,
power meters, spectrum analyzers and other measuring instruments. The dual directional design allows the
user to monitor both forward and reflected power, a much needed characteristic in RF susceptibility testing for
amplifier overdrive protection, field control and load protection. Low insertion loss allows efficient coupling to
the load. The DC7351 is intended for use with the 4000TP4G8, 7400TP4G8, and other T series microwave
TWT amplifiers.
SPECIFICATIONS
FREQUENCY RANGE ............................................ 4–8 GHz
POWER (maximum) .............................................. 6 kW CW
92 kW Peak
COUPLING FACTOR ............................................ 40 dB

2.0 dB (includes flatness)
COUPLING FLATNESS .......................................... ± 1.5 dB
DIRECTIVITY
Typical
........................................................... 35 dB
Minimum ....................................................... 30 dB
INSERTION LOSS ................................................ 0.15 dB maximum
VSWR (Main Line) ................................................. 1.1:1 maximum
CONNECTORS
Main
Line ....................................................... WRD-350
Coupled ........................................................ N(F)
WEIGHT ............................................................... 1.24 kg (2.75 lbs)
SIZE (WxHxD) ....................................................... 4.1 x 6.9 x 45.8 cm (1.61 x 2.72 x 18 in)