160 School House Road, Souderton, PA 18964-9990 USA
Phone 215-723-8181•FAX 215-723-5688
MODEL DC7128A
MODEL DC7128, M1
DUAL DIRECTIONAL COUPLER
1500 WATTS CW
0.8 - 2.8 GHz
The Model DC7128A is a high power dual directional coupler with excellent frequency range and
power handling capability. The wide range assures flexibility in coupling high power amplifiers to
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 Model DC7128A is intended for use with the 500T1G2 and
1000T1G2 and other "T" series microwave TWT amplifiers and other amplifiers operating within the
frequency and power range.
SPECIFICATIONS
Model DC7128A
FREQUENCY RANGE ..............................................................................0.8 - 2.8 GHz
POWER (maximum) ..................................................................................1500 watts CW
3000 watts peak
COUPLING FACTOR ...............................................................................50 dB
±
1.0dB (includes flatness)
COUPLING FLATNESS............................................................................± 0.8dB
DIRECTIVITY
Typical.................................................................................................25dB
Minimum..............................................................................................20dB
INSERTION LOSS ....................................................................................0.2dB maximum
IMPEDANCE (Main Line).........................................................................50 ohms, VSWR 1.2:1 maximum
CONNECTORS.........................................................................................See Model Configuration
WEIGHT...................................................................................................0.57 kg (1.25 lb.)
SIZE (WxHxD)..........................................................................................7.6 x 7.6 x 3.9 cm
3.0 x 3.0 x 1.125 in
Model Configuration
Model Number
DC7128A
DC7128
DC7128M1
Main Line Connector
J1/J2
7-16(M)/7-16(F)
7-16(F)/7-16(F)
SC(F)/SC(F)
Coupled Connector
J3/J4
N(F)/N(F)
N(F)/N(F)
N(F)/N(F)
REV052002
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